/////////////////////////////////////////////////////////////////////////////
// Name:        grid.h
// Purpose:     interface of wxGrid and related classes
// Author:      wxWidgets team
// RCS-ID:      $Id$
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

/**
    @class wxGridCellRenderer

    This class is responsible for actually drawing the cell in the grid. You
    may pass it to the wxGridCellAttr (below) to change the format of one given
    cell or to wxGrid::SetDefaultRenderer() to change the view of all cells.
    This is an abstract class, and you will normally use one of the predefined
    derived classes or derive your own class from it.

    @library{wxadv}
    @category{grid}

    @see wxGridCellAutoWrapStringRenderer, wxGridCellBoolRenderer,
         wxGridCellDateTimeRenderer, wxGridCellEnumRenderer,
         wxGridCellFloatRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellRenderer
{
public:
    /**
        This function must be implemented in derived classes to return a copy
        of itself.
    */
    virtual wxGridCellRenderer* Clone() const = 0;

    /**
        Draw the given cell on the provided DC inside the given rectangle using
        the style specified by the attribute and the default or selected state
        corresponding to the isSelected value.

        This pure virtual function has a default implementation which will
        prepare the DC using the given attribute: it will draw the rectangle
        with the background colour from attr and set the text colour and font.
    */
    virtual void Draw(wxGrid& grid, wxGridCellAttr& attr, wxDC& dc,
                      const wxRect& rect, int row, int col,
                      bool isSelected) = 0;

    /**
        Get the preferred size of the cell for its contents.
    */
    virtual wxSize GetBestSize(wxGrid& grid, wxGridCellAttr& attr, wxDC& dc,
                               int row, int col) = 0;
};

/**
    @class wxGridCellAutoWrapStringRenderer

    This class may be used to format string data in a cell. The too
    long lines are wrapped to be shown entirely at word boundaries.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellBoolRenderer,
         wxGridCellDateTimeRenderer, wxGridCellEnumRenderer,
         wxGridCellFloatRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/

class wxGridCellAutoWrapStringRenderer : public wxGridCellStringRenderer
{
public:
    /**
        Default constructor.
    */
    wxGridCellAutoWrapStringRenderer();
};


/**
    @class wxGridCellBoolRenderer

    This class may be used to format boolean data in a cell.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellDateTimeRenderer, wxGridCellEnumRenderer,
         wxGridCellFloatRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellBoolRenderer : public wxGridCellRenderer
{
public:
    /**
        Default constructor.
    */
    wxGridCellBoolRenderer();
};

/**
    @class wxGridCellDateTimeRenderer

    This class may be used to format a date/time data in a cell.
    The class wxDateTime is used internally to display the local date/time
    or to parse the string date entered in the cell thanks to the defined format.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellBoolRenderer, wxGridCellEnumRenderer,
         wxGridCellFloatRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellDateTimeRenderer : public wxGridCellStringRenderer
{
public:
    /**
        Date/time renderer constructor.

        @param outformat
            strptime()-like format string used the parse the output date/time.
        @param informat
            strptime()-like format string used to parse the string entered in the cell.
    */
    wxGridCellDateTimeRenderer(const wxString& outformat = wxDefaultDateTimeFormat,
                               const wxString& informat = wxDefaultDateTimeFormat);


    /**
        Sets the strptime()-like format string which will be used to parse
        the date/time.

        @param params
            strptime()-like format string used to parse the date/time.
    */
    virtual void SetParameters(const wxString& params);
};

/**
    @class wxGridCellEnumRenderer

    This class may be used to render in a cell a number as a textual
    equivalent.

    The corresponding text strings are specified as comma-separated items in
    the string passed to this renderer ctor or SetParameters() method. For
    example, if this string is @c "John,Fred,Bob" the cell will be rendered as
    "John", "Fred" or "Bob" if its contents is 0, 1 or 2 respectively.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellBoolRenderer, wxGridCellDateTimeRenderer,
         wxGridCellFloatRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellEnumRenderer : public wxGridCellStringRenderer
{
public:
    /**
        Enum renderer ctor.

        @param choices
            Comma separated string parameters "item1[,item2[...,itemN]]".
    */
    wxGridCellEnumRenderer( const wxString& choices = wxEmptyString );

    /**
        Sets the comma separated string content of the enum.

        @param params
            Comma separated string parameters "item1[,item2[...,itemN]]".
    */
    virtual void SetParameters(const wxString& params);
};

/**
    Specifier used to format the data to string for the numbers handled by
    wxGridCellFloatRenderer and wxGridCellFloatEditor.

    @since 2.9.3
*/
enum wxGridCellFloatFormat
{
    /// Decimal floating point (%f).
    wxGRID_FLOAT_FORMAT_FIXED       = 0x0010,

    /// Scientific notation (mantise/exponent) using e character (%e).
    wxGRID_FLOAT_FORMAT_SCIENTIFIC  = 0x0020,

    /// Use the shorter of %e or %f (%g).
    wxGRID_FLOAT_FORMAT_COMPACT     = 0x0040,

    /// To use in combination with one of the above formats for the upper
    /// case version (%F/%E/%G)
    wxGRID_FLOAT_FORMAT_UPPER       = 0x0080,

    /// The format used by default (wxGRID_FLOAT_FORMAT_FIXED).
    wxGRID_FLOAT_FORMAT_DEFAULT     = wxGRID_FLOAT_FORMAT_FIXED
};

/**
    @class wxGridCellFloatRenderer

    This class may be used to format floating point data in a cell.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellBoolRenderer, wxGridCellDateTimeRenderer,
         wxGridCellEnumRenderer, wxGridCellNumberRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellFloatRenderer : public wxGridCellStringRenderer
{
public:
    /**
        Float cell renderer ctor.

        @param width
            Minimum number of characters to be shown.
        @param precision
            Number of digits after the decimal dot.
        @param format
            The format used to display the string, must be a combination of
            ::wxGridCellFloatFormat enum elements. This parameter is only
            available since wxWidgets 2.9.3.
    */
    wxGridCellFloatRenderer(int width = -1, int precision = -1,
                            int format = wxGRID_FLOAT_FORMAT_DEFAULT);

    /**
        Returns the specifier used to format the data to string.

        The returned value is a combination of ::wxGridCellFloatFormat elements.

        @since 2.9.3
    */
    int GetFormat() const;

    /**
        Returns the precision.
    */
    int GetPrecision() const;

    /**
        Returns the width.
    */
    int GetWidth() const;

    /**
        Set the format to use for display the number.

        @param format
            Must be a combination of ::wxGridCellFloatFormat enum elements.

        @since 2.9.3
    */
    void SetFormat(int format);

    /**
        The parameters string format is "width[,precision[,format]]" where
        @c format should be choosen beween f|e|g|E|G (f is used by default)
    */
    virtual void SetParameters(const wxString& params);

    /**
        Sets the precision.
    */
    void SetPrecision(int precision);

    /**
        Sets the width.
    */
    void SetWidth(int width);
};

/**
    @class wxGridCellNumberRenderer

    This class may be used to format integer data in a cell.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellBoolRenderer, wxGridCellDateTimeRenderer,
         wxGridCellEnumRenderer, wxGridCellFloatRenderer,
         wxGridCellStringRenderer
*/
class wxGridCellNumberRenderer : public wxGridCellStringRenderer
{
public:
    /**
        Default constructor.
    */
    wxGridCellNumberRenderer();
};

/**
    @class wxGridCellStringRenderer

    This class may be used to format string data in a cell; it is the default
    for string cells.

    @library{wxadv}
    @category{grid}

    @see wxGridCellRenderer, wxGridCellAutoWrapStringRenderer,
         wxGridCellBoolRenderer, wxGridCellDateTimeRenderer,
         wxGridCellEnumRenderer, wxGridCellFloatRenderer,
         wxGridCellNumberRenderer
*/
class wxGridCellStringRenderer : public wxGridCellRenderer
{
public:
    /**
        Default constructor.
    */
    wxGridCellStringRenderer();
};


/**
    @class wxGridCellEditor

    This class is responsible for providing and manipulating the in-place edit
    controls for the grid.  Instances of wxGridCellEditor (actually, instances
    of derived classes since it is an abstract class) can be associated with
    the cell attributes for individual cells, rows, columns, or even for the
    entire grid.

    @library{wxadv}
    @category{grid}

    @see wxGridCellAutoWrapStringEditor, wxGridCellBoolEditor,
         wxGridCellChoiceEditor, wxGridCellEnumEditor,
         wxGridCellFloatEditor, wxGridCellNumberEditor,
         wxGridCellTextEditor
*/
class wxGridCellEditor
{
public:
    /**
        Default constructor.
    */
    wxGridCellEditor();

    /**
        Fetch the value from the table and prepare the edit control to begin
        editing.

        This function should save the original value of the grid cell at the
        given @a row and @a col and show the control allowing the user to
        change it.

        @see EndEdit()
    */
    virtual void BeginEdit(int row, int col, wxGrid* grid) = 0;

    /**
        Create a new object which is the copy of this one.
    */
    virtual wxGridCellEditor* Clone() const = 0;

    /**
        Creates the actual edit control.
    */
    virtual void Create(wxWindow* parent, wxWindowID id,
                        wxEvtHandler* evtHandler) = 0;

    /**
        Final cleanup.
    */
    virtual void Destroy();

    /**
        End editing the cell.

        This function must check if the current value of the editing control is
        valid and different from the original value (available as @a oldval in
        its string form and possibly saved internally using its real type by
        BeginEdit()). If it isn't, it just returns @false, otherwise it must do
        the following:
            # Save the new value internally so that ApplyEdit() could apply it.
            # Fill @a newval (which is never @NULL) with the string
            representation of the new value.
            # Return @true

        Notice that it must @em not modify the grid as the change could still
        be vetoed.

        If the user-defined wxEVT_GRID_CELL_CHANGING event handler doesn't veto
        this change, ApplyEdit() will be called next.
    */
    virtual bool EndEdit(int row, int col, const wxGrid* grid,
                         const wxString& oldval, wxString* newval) = 0;

    /**
        Effectively save the changes in the grid.

        This function should save the value of the control in the grid. It is
        called only after EndEdit() returns @true.
     */
    virtual void ApplyEdit(int row, int col, wxGrid* grid) = 0;

    /**
        Some types of controls on some platforms may need some help with the
        Return key.
    */
    virtual void HandleReturn(wxKeyEvent& event);

    /**
        Returns @true if the edit control has been created.
    */
    bool IsCreated();

    /**
        Draws the part of the cell not occupied by the control: the base class
        version just fills it with background colour from the attribute.
    */
    virtual void PaintBackground(const wxRect& rectCell, wxGridCellAttr* attr);

    /**
        Reset the value in the control back to its starting value.
    */
    virtual void Reset() = 0;

    /**
        Size and position the edit control.
    */
    virtual void SetSize(const wxRect& rect);

    /**
        Show or hide the edit control, use the specified attributes to set
        colours/fonts for it.
    */
    virtual void Show(bool show, wxGridCellAttr* attr = NULL);

    /**
        If the editor is enabled by clicking on the cell, this method will be
        called.
    */
    virtual void StartingClick();

    /**
        If the editor is enabled by pressing keys on the grid, this will be
        called to let the editor do something about that first key if desired.
    */
    virtual void StartingKey(wxKeyEvent& event);

protected:

    /**
        The destructor is private because only DecRef() can delete us.
    */
    virtual ~wxGridCellEditor();
};

/**
    @class wxGridCellAutoWrapStringEditor

    Grid cell editor for wrappable string/text data.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellBoolEditor, wxGridCellChoiceEditor,
         wxGridCellEnumEditor, wxGridCellFloatEditor,
         wxGridCellNumberEditor, wxGridCellTextEditor
*/
class wxGridCellAutoWrapStringEditor : public wxGridCellTextEditor
{
public:
    wxGridCellAutoWrapStringEditor();
};

/**
    @class wxGridCellBoolEditor

    Grid cell editor for boolean data.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellChoiceEditor, wxGridCellEnumEditor,
         wxGridCellFloatEditor, wxGridCellNumberEditor,
         wxGridCellTextEditor
*/
class wxGridCellBoolEditor : public wxGridCellEditor
{
public:
    /**
        Default constructor.
    */
    wxGridCellBoolEditor();

    /**
        Returns @true if the given @a value is equal to the string
        representation of the truth value we currently use (see
        UseStringValues()).
    */
    static bool IsTrueValue(const wxString& value);

    /**
        This method allows you to customize the values returned by GetValue()
        for the cell using this editor. By default, the default values of the
        arguments are used, i.e. @c "1" is returned if the cell is checked and
        an empty string otherwise.
    */
    static void UseStringValues(const wxString& valueTrue = "1",
                                const wxString& valueFalse = wxEmptyString);
};

/**
    @class wxGridCellChoiceEditor

    Grid cell editor for string data providing the user a choice from a list of
    strings.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellBoolEditor, wxGridCellEnumEditor,
         wxGridCellFloatEditor, wxGridCellNumberEditor,
         wxGridCellTextEditor
*/
class wxGridCellChoiceEditor : public wxGridCellEditor
{
public:
    /**
        Choice cell renderer ctor.

        @param count
            Number of strings from which the user can choose.
        @param choices
            An array of strings from which the user can choose.
        @param allowOthers
            If allowOthers is @true, the user can type a string not in choices
            array.
    */
    wxGridCellChoiceEditor(size_t count = 0,
                           const wxString choices[] = NULL,
                           bool allowOthers = false);

    /**
        Choice cell renderer ctor.

        @param choices
            An array of strings from which the user can choose.
        @param allowOthers
            If allowOthers is @true, the user can type a string not in choices
            array.
    */
    wxGridCellChoiceEditor(const wxArrayString& choices,
                           bool allowOthers = false);

    /**
        Parameters string format is "item1[,item2[...,itemN]]"
    */
    virtual void SetParameters(const wxString& params);
};

/**
    @class wxGridCellEnumEditor

    Grid cell editor which displays an enum number as a textual equivalent
    (eg. data in cell is 0,1,2 ... n the cell could be displayed as
    "John","Fred"..."Bob" in the combo choice box).

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellBoolEditor, wxGridCellChoiceEditor,
         wxGridCellTextEditor, wxGridCellFloatEditor,
         wxGridCellNumberEditor
*/
class wxGridCellEnumEditor : public wxGridCellChoiceEditor
{
public:
    /**
        Enum cell editor ctor.

        @param choices
            Comma separated choice parameters "item1[,item2[...,itemN]]".
    */
    wxGridCellEnumEditor( const wxString& choices = wxEmptyString );
};

/**
    @class wxGridCellTextEditor

    Grid cell editor for string/text data.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellBoolEditor, wxGridCellChoiceEditor,
         wxGridCellEnumEditor, wxGridCellFloatEditor,
         wxGridCellNumberEditor
*/
class wxGridCellTextEditor : public wxGridCellEditor
{
public:
    /**
        Default constructor.
    */
    wxGridCellTextEditor();

    /**
        The parameters string format is "n" where n is a number representing
        the maximum width.
    */
    virtual void SetParameters(const wxString& params);
};

/**
    @class wxGridCellFloatEditor

    The editor for floating point numbers data.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellBoolEditor, wxGridCellChoiceEditor,
         wxGridCellEnumEditor, wxGridCellNumberEditor,
         wxGridCellTextEditor
*/
class wxGridCellFloatEditor : public wxGridCellTextEditor
{
public:
    /**
        Float cell editor ctor.

        @param width
            Minimum number of characters to be shown.
        @param precision
            Number of digits after the decimal dot.
        @param format
            The format to use for displaying the number, a combination of
            ::wxGridCellFloatFormat enum elements. This parameter is only
            available since wxWidgets 2.9.3.
    */
    wxGridCellFloatEditor(int width = -1, int precision = -1,
                          int format = wxGRID_FLOAT_FORMAT_DEFAULT);

    /**
        The parameters string format is "width[,precision[,format]]" where
        @c format should be choosen beween f|e|g|E|G (f is used by default)
    */
    virtual void SetParameters(const wxString& params);
};

/**
    @class wxGridCellNumberEditor

    Grid cell editor for numeric integer data.

    @library{wxadv}
    @category{grid}

    @see wxGridCellEditor, wxGridCellAutoWrapStringEditor,
         wxGridCellBoolEditor, wxGridCellChoiceEditor,
         wxGridCellEnumEditor, wxGridCellFloatEditor,
         wxGridCellTextEditor
*/
class wxGridCellNumberEditor : public wxGridCellTextEditor
{
public:
    /**
        Allows you to specify the range for acceptable data. Values equal to
        -1 for both @a min and @a max indicate that no range checking should be
        done.
    */
    wxGridCellNumberEditor(int min = -1, int max = -1);


    /**
        Parameters string format is "min,max".
    */
    virtual void SetParameters(const wxString& params);

protected:

    /**
        If the return value is @true, the editor uses a wxSpinCtrl to get user
        input, otherwise it uses a wxTextCtrl.
    */
    bool HasRange() const;

    /**
        String representation of the value.
    */
    wxString GetString() const;
};



/**
    @class wxGridCellAttr

    This class can be used to alter the cells' appearance in the grid by
    changing their attributes from the defaults. An object of this class may be
    returned by wxGridTableBase::GetAttr().

    @library{wxadv}
    @category{grid}
*/
class wxGridCellAttr
{
public:
    /**
        Kind of the attribute to retrieve.

        @see wxGridCellAttrProvider::GetAttr(), wxGridTableBase::GetAttr()
     */
    enum wxAttrKind
    {
        /// Return the combined effective attribute for the cell.
        Any,

        /// Return the attribute explicitly set for this cell.
        Cell,

        /// Return the attribute set for this cells row.
        Row,

        /// Return the attribute set for this cells column.
        Col
    };

    /**
        Default constructor.
    */
    wxGridCellAttr(wxGridCellAttr* attrDefault = NULL);
    /**
        Constructor specifying some of the often used attributes.
    */
    wxGridCellAttr(const wxColour& colText, const wxColour& colBack,
                   const wxFont& font, int hAlign, int vAlign);

    /**
        Creates a new copy of this object.
    */
    wxGridCellAttr* Clone() const;

    /**
        This class is reference counted: it is created with ref count of 1, so
        calling DecRef() once will delete it. Calling IncRef() allows to lock
        it until the matching DecRef() is called.
    */
    void DecRef();

    /**
        Get the alignment to use for the cell with the given attribute.

        If this attribute doesn't specify any alignment, the default attribute
        alignment is used (which can be changed using
        wxGrid::SetDefaultCellAlignment() but is left and top by default).

        Notice that @a hAlign and @a vAlign values are always overwritten by
        this function, use GetNonDefaultAlignment() if this is not desirable.

        @param hAlign
            Horizontal alignment is returned here if this argument is non-@NULL.
            It is one of wxALIGN_LEFT, wxALIGN_CENTRE or wxALIGN_RIGHT.
        @param vAlign
            Vertical alignment is returned here if this argument is non-@NULL.
            It is one of wxALIGN_TOP, wxALIGN_CENTRE or wxALIGN_BOTTOM.
    */
    void GetAlignment(int* hAlign, int* vAlign) const;

    /**
        Returns the background colour.
    */
    const wxColour& GetBackgroundColour() const;

    /**
        Returns the cell editor.
    */
    wxGridCellEditor* GetEditor(const wxGrid* grid, int row, int col) const;

    /**
        Returns the font.
    */
    const wxFont& GetFont() const;

    /**
        Get the alignment defined by this attribute.

        Unlike GetAlignment() this function only modifies @a hAlign and @a
        vAlign if this attribute does define a non-default alignment. This
        means that they must be initialized before calling this function and
        that their values will be preserved unchanged if they are different
        from wxALIGN_INVALID.

        For example, the following fragment can be used to use the cell
        alignment if one is defined but right-align its contents by default
        (instead of left-aligning it by default) while still using the default
        vertical alignment:
        @code
            int hAlign = wxALIGN_RIGHT,
                vAlign = wxALIGN_INVALID;
            attr.GetNonDefaultAlignment(&hAlign, &vAlign);
        @endcode

        @since 2.9.1
     */
    void GetNonDefaultAlignment(int *hAlign, int *vAlign) const;

    /**
        Returns the cell renderer.
    */
    wxGridCellRenderer* GetRenderer(const wxGrid* grid, int row, int col) const;

    /**
        Returns the text colour.
    */
    const wxColour& GetTextColour() const;

    /**
        Returns @true if this attribute has a valid alignment set.
    */
    bool HasAlignment() const;

    /**
        Returns @true if this attribute has a valid background colour set.
    */
    bool HasBackgroundColour() const;

    /**
        Returns @true if this attribute has a valid cell editor set.
    */
    bool HasEditor() const;

    /**
        Returns @true if this attribute has a valid font set.
    */
    bool HasFont() const;

    /**
        Returns @true if this attribute has a valid cell renderer set.
    */
    bool HasRenderer() const;

    /**
        Returns @true if this attribute has a valid text colour set.
    */
    bool HasTextColour() const;

    /**
        This class is reference counted: it is created with ref count of 1, so
        calling DecRef() once will delete it. Calling IncRef() allows to lock
        it until the matching DecRef() is called.
    */
    void IncRef();

    /**
        Returns @true if this cell is set as read-only.
    */
    bool IsReadOnly() const;

    /**
        Sets the alignment. @a hAlign can be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT and @a vAlign can be one of
        @c wxALIGN_TOP, @c wxALIGN_CENTRE or @c wxALIGN_BOTTOM.
    */
    void SetAlignment(int hAlign, int vAlign);

    /**
        Sets the background colour.
    */
    void SetBackgroundColour(const wxColour& colBack);

    /**
        @todo Needs documentation.
    */
    void SetDefAttr(wxGridCellAttr* defAttr);

    /**
        Sets the editor to be used with the cells with this attribute.
    */
    void SetEditor(wxGridCellEditor* editor);

    /**
        Sets the font.
    */
    void SetFont(const wxFont& font);

    /**
        Sets the cell as read-only.
    */
    void SetReadOnly(bool isReadOnly = true);

    /**
        Sets the renderer to be used for cells with this attribute. Takes
        ownership of the pointer.
    */
    void SetRenderer(wxGridCellRenderer* renderer);

    /**
        Sets the text colour.
    */
    void SetTextColour(const wxColour& colText);
};

/**
    Base class for corner window renderer.

    This is the simplest of all header renderers and only has a single
    function.

    @see wxGridCellAttrProvider::GetCornerRenderer()

    @since 2.9.1
 */
class wxGridCornerHeaderRenderer
{
public:
    /**
        Called by the grid to draw the corner window border.

        This method is responsible for drawing the border inside the given @a
        rect and adjusting the rectangle size to correspond to the area inside
        the border, i.e. usually call wxRect::Deflate() to account for the
        border width.

        @param grid
            The grid whose corner window is being drawn.
        @param dc
            The device context to use for drawing.
        @param rect
            Input/output parameter which contains the border rectangle on input
            and should be updated to contain the area inside the border on
            function return.
     */
    virtual void DrawBorder(const wxGrid& grid,
                            wxDC& dc,
                            wxRect& rect) const = 0;
};
/**
    Common base class for row and column headers renderers.

    @see wxGridColumnHeaderRenderer, wxGridRowHeaderRenderer

    @since 2.9.1
 */
class wxGridHeaderLabelsRenderer : public wxGridCornerHeaderRenderer
{
public:
    /**
        Called by the grid to draw the specified label.

        Notice that the base class DrawBorder() method is called before this
        one.

        The default implementation uses wxGrid::GetLabelTextColour() and
        wxGrid::GetLabelFont() to draw the label.
     */
    virtual void DrawLabel(const wxGrid& grid,
                           wxDC& dc,
                           const wxString& value,
                           const wxRect& rect,
                           int horizAlign,
                           int vertAlign,
                           int textOrientation) const;
};

/**
    Base class for row headers renderer.

    This is the same as wxGridHeaderLabelsRenderer currently but we still use a
    separate class for it to distinguish it from wxGridColumnHeaderRenderer.

    @see wxGridRowHeaderRendererDefault

    @see wxGridCellAttrProvider::GetRowHeaderRenderer()

    @since 2.9.1
 */
class wxGridRowHeaderRenderer : public wxGridHeaderLabelsRenderer
{
};

/**
    Base class for column headers renderer.

    This is the same as wxGridHeaderLabelsRenderer currently but we still use a
    separate class for it to distinguish it from wxGridRowHeaderRenderer.

    @see wxGridColumnHeaderRendererDefault

    @see wxGridCellAttrProvider::GetColumnHeaderRenderer()

    @since 2.9.1
 */
class wxGridColumnHeaderRenderer : public wxGridHeaderLabelsRenderer
{
};

/**
    Default row header renderer.

    You may derive from this class if you need to only override one of its
    methods (i.e. either DrawLabel() or DrawBorder()) but continue to use the
    default implementation for the other one.

    @see wxGridColumnHeaderRendererDefault

    @since 2.9.1
 */
class wxGridRowHeaderRendererDefault : public wxGridRowHeaderRenderer
{
public:
    /// Implement border drawing for the row labels.
    virtual void DrawBorder(const wxGrid& grid,
                            wxDC& dc,
                            wxRect& rect) const;
};

/**
    Default column header renderer.

    @see wxGridRowHeaderRendererDefault

    @since 2.9.1
 */
class wxGridColumnHeaderRendererDefault : public wxGridColumnHeaderRenderer
{
public:
    /// Implement border drawing for the column labels.
    virtual void DrawBorder(const wxGrid& grid,
                            wxDC& dc,
                            wxRect& rect) const;
};

/**
    Default corner window renderer.

    @see wxGridColumnHeaderRendererDefault, wxGridRowHeaderRendererDefault

    @since 2.9.1
 */
class wxGridCornerHeaderRendererDefault : public wxGridCornerHeaderRenderer
{
public:
    /// Implement border drawing for the corner window.
    virtual void DrawBorder(const wxGrid& grid,
                            wxDC& dc,
                            wxRect& rect) const;
};

/**
    Class providing attributes to be used for the grid cells.

    This class both defines an interface which grid cell attributes providers
    should implement -- and which can be implemented differently in derived
    classes -- and a default implementation of this interface which is often
    good enough to be used without modification, especially with not very large
    grids for which the efficiency of attributes storage hardly matters (see
    the discussion below).

    An object of this class can be associated with a wxGrid using
    wxGridTableBase::SetAttrProvider() but it's not necessary to call it if you
    intend to use the default provider as it is used by wxGridTableBase by
    default anyhow.

    Notice that while attributes provided by this class can be set for
    individual cells using SetAttr() or the entire rows or columns using
    SetRowAttr() and SetColAttr() they are always retrieved using GetAttr()
    function.


    The default implementation of this class stores the attributes passed to
    its SetAttr(), SetRowAttr() and SetColAttr() in a straightforward way. A
    derived class may use its knowledge about how the attributes are used in
    your program to implement it much more efficiently: for example, using a
    special background colour for all even-numbered rows can be implemented by
    simply returning the same attribute from GetAttr() if the row number is
    even instead of having to store N/2 row attributes where N is the total
    number of rows in the grid.

    Notice that objects of this class can't be copied.
 */
class wxGridCellAttrProvider : public wxClientDataContainer
{
public:
    /// Trivial default constructor.
    wxGridCellAttrProvider();

    /// Destructor releases any attributes held by this class.
    virtual ~wxGridCellAttrProvider();

    /**
        Get the attribute to use for the specified cell.

        If wxGridCellAttr::Any is used as @a kind value, this function combines
        the attributes set for this cell using SetAttr() and those for its row
        or column (set with SetRowAttr() or SetColAttr() respectively), with
        the cell attribute having the highest precedence.

        Notice that the caller must call DecRef() on the returned pointer if it
        is non-@NULL.

        @param row
            The row of the cell.
        @param col
            The column of the cell.
        @param kind
            The kind of the attribute to return.
        @return
            The attribute to use which should be DecRef()'d by caller or @NULL
            if no attributes are defined for this cell.
     */
    virtual wxGridCellAttr *GetAttr(int row, int col,
                                    wxGridCellAttr::wxAttrKind kind) const;

    /**
        Setting attributes.

        All these functions take ownership of the attribute passed to them,
        i.e. will call DecRef() on it themselves later and so it should not be
        destroyed by the caller. And the attribute can be @NULL to reset a
        previously set value.
     */
    //@{

    /// Set attribute for the specified cell.
    virtual void SetAttr(wxGridCellAttr *attr, int row, int col);

    /// Set attribute for the specified row.
    virtual void SetRowAttr(wxGridCellAttr *attr, int row);

    /// Set attribute for the specified column.
    virtual void SetColAttr(wxGridCellAttr *attr, int col);

    //@}

    /**
        Getting header renderers.

        These functions return the renderers for the given row or column header
        label and the corner window. Unlike cell attributes, these objects are
        not reference counted and are never @NULL so they are returned by
        reference and not pointer and DecRef() shouldn't (and can't) be called
        for them.

        All these functions were added in wxWidgets 2.9.1.
     */
    //@{

    /**
        Return the renderer used for drawing column headers.

        By default wxGridColumnHeaderRendererDefault is returned.

        @see wxGrid::SetUseNativeColLabels(), wxGrid::UseNativeColHeader()

        @since 2.9.1
     */
    virtual const wxGridColumnHeaderRenderer& GetColumnHeaderRenderer(int col);

    /**
        Return the renderer used for drawing row headers.

        By default wxGridRowHeaderRendererDefault is returned.

        @since 2.9.1
     */
    virtual const wxGridRowHeaderRenderer& GetRowHeaderRenderer(int row);

    /**
        Return the renderer used for drawing the corner window.

        By default wxGridCornerHeaderRendererDefault is returned.

        @since 2.9.1
     */
    virtual const wxGridCornerHeaderRenderer& GetCornerRenderer();

    //@}
};


/**
    @class wxGridTableBase

    The almost abstract base class for grid tables.

    A grid table is responsible for storing the grid data and, indirectly, grid
    cell attributes. The data can be stored in the way most convenient for the
    application but has to be provided in string form to wxGrid. It is also
    possible to provide cells values in other formats if appropriate, e.g. as
    numbers.

    This base class is not quite abstract as it implements a trivial strategy
    for storing the attributes by forwarding it to wxGridCellAttrProvider and
    also provides stubs for some other functions. However it does have a number
    of pure virtual methods which must be implemented in the derived classes.

    @see wxGridStringTable

    @library{wxadv}
    @category{grid}
*/
class wxGridTableBase : public wxObject
{
public:
    /**
        Default constructor.
     */
    wxGridTableBase();

    /**
        Destructor frees the attribute provider if it was created.
     */
    virtual ~wxGridTableBase();

    /**
        Must be overridden to return the number of rows in the table.

        For backwards compatibility reasons, this method is not const.
        Use GetRowsCount() instead of it in const methods of derived table
        classes.
     */
    virtual int GetNumberRows() = 0;

    /**
        Must be overridden to return the number of columns in the table.

        For backwards compatibility reasons, this method is not const.
        Use GetColsCount() instead of it in const methods of derived table
        classes,
     */
    virtual int GetNumberCols() = 0;

    /**
        Return the number of rows in the table.

        This method is not virtual and is only provided as a convenience for
        the derived classes which can't call GetNumberRows() without a
        @c const_cast from their const methods.
     */
    int GetRowsCount() const;

    /**
        Return the number of columns in the table.

        This method is not virtual and is only provided as a convenience for
        the derived classes which can't call GetNumberCols() without a
        @c const_cast from their const methods.
     */
    int GetColsCount() const;


    /**
        @name Table Cell Accessors
     */
    //@{

    /**
        May be overridden to implement testing for empty cells.

        This method is used by the grid to test if the given cell is not used
        and so whether a neighbouring cell may overflow into it. By default it
        only returns true if the value of the given cell, as returned by
        GetValue(), is empty.
     */
    virtual bool IsEmptyCell(int row, int col);

    /**
        Same as IsEmptyCell() but taking wxGridCellCoords.

        Notice that this method is not virtual, only IsEmptyCell() should be
        overridden.
     */
    bool IsEmpty(const wxGridCellCoords& coords);

    /**
        Must be overridden to implement accessing the table values as text.
     */
    virtual wxString GetValue(int row, int col) = 0;

    /**
        Must be overridden to implement setting the table values as text.
     */
    virtual void SetValue(int row, int col, const wxString& value) = 0;

    /**
        Returns the type of the value in the given cell.

        By default all cells are strings and this method returns
        @c wxGRID_VALUE_STRING.
     */
    virtual wxString GetTypeName(int row, int col);

    /**
        Returns true if the value of the given cell can be accessed as if it
        were of the specified type.

        By default the cells can only be accessed as strings. Note that a cell
        could be accessible in different ways, e.g. a numeric cell may return
        @true for @c wxGRID_VALUE_NUMBER but also for @c wxGRID_VALUE_STRING
        indicating that the value can be coerced to a string form.
     */
    virtual bool CanGetValueAs(int row, int col, const wxString& typeName);

    /**
        Returns true if the value of the given cell can be set as if it were of
        the specified type.

        @see CanGetValueAs()
     */
    virtual bool CanSetValueAs(int row, int col, const wxString& typeName);

    /**
        Returns the value of the given cell as a long.

        This should only be called if CanGetValueAs() returns @true when called
        with @c wxGRID_VALUE_NUMBER argument. Default implementation always
        return 0.
     */
    virtual long GetValueAsLong(int row, int col);

    /**
        Returns the value of the given cell as a double.

        This should only be called if CanGetValueAs() returns @true when called
        with @c wxGRID_VALUE_FLOAT argument. Default implementation always
        return 0.0.
     */
    virtual double GetValueAsDouble(int row, int col);

    /**
        Returns the value of the given cell as a boolean.

        This should only be called if CanGetValueAs() returns @true when called
        with @c wxGRID_VALUE_BOOL argument. Default implementation always
        return false.
     */
    virtual bool GetValueAsBool(int row, int col);

    /**
        Returns the value of the given cell as a user-defined type.

        This should only be called if CanGetValueAs() returns @true when called
        with @a typeName. Default implementation always return @NULL.
     */
    virtual void *GetValueAsCustom(int row, int col, const wxString& typeName);

    /**
        Sets the value of the given cell as a long.

        This should only be called if CanSetValueAs() returns @true when called
        with @c wxGRID_VALUE_NUMBER argument. Default implementation doesn't do
        anything.
     */
    virtual void SetValueAsLong(int row, int col, long value);

    /**
        Sets the value of the given cell as a double.

        This should only be called if CanSetValueAs() returns @true when called
        with @c wxGRID_VALUE_FLOAT argument. Default implementation doesn't do
        anything.
     */
    virtual void SetValueAsDouble(int row, int col, double value);

    /**
        Sets the value of the given cell as a boolean.

        This should only be called if CanSetValueAs() returns @true when called
        with @c wxGRID_VALUE_BOOL argument. Default implementation doesn't do
        anything.
     */
    virtual void SetValueAsBool( int row, int col, bool value );

    /**
        Sets the value of the given cell as a user-defined type.

        This should only be called if CanSetValueAs() returns @true when called
        with @a typeName. Default implementation doesn't do anything.
     */
    virtual void SetValueAsCustom(int row, int col, const wxString& typeName,
                                  void *value);

    //@}


    /**
        Called by the grid when the table is associated with it.

        The default implementation stores the pointer and returns it from its
        GetView() and so only makes sense if the table cannot be associated
        with more than one grid at a time.
     */
    virtual void SetView(wxGrid *grid);

    /**
        Returns the last grid passed to SetView().
     */
    virtual wxGrid *GetView() const;


    /**
        @name Table Structure Modifiers

        Notice that none of these functions are pure virtual as they don't have
        to be implemented if the table structure is never modified after
        creation, i.e. neither rows nor columns are never added or deleted but
        that you do need to implement them if they are called, i.e. if your
        code either calls them directly or uses the matching wxGrid methods, as
        by default they simply do nothing which is definitely inappropriate.
     */
    //@{

    /**
        Clear the table contents.

        This method is used by wxGrid::ClearGrid().
     */
    virtual void Clear();

    /**
        Insert additional rows into the table.

        @param pos
            The position of the first new row.
        @param numRows
            The number of rows to insert.
     */
    virtual bool InsertRows(size_t pos = 0, size_t numRows = 1);

    /**
        Append additional rows at the end of the table.

        This method is provided in addition to InsertRows() as some data models
        may only support appending rows to them but not inserting them at
        arbitrary locations. In such case you may implement this method only
        and leave InsertRows() unimplemented.

        @param numRows
            The number of rows to add.
     */
    virtual bool AppendRows(size_t numRows = 1);

    /**
        Delete rows from the table.

        @param pos
            The first row to delete.
        @param numRows
            The number of rows to delete.
     */
    virtual bool DeleteRows(size_t pos = 0, size_t numRows = 1);

    /**
        Exactly the same as InsertRows() but for columns.
     */
    virtual bool InsertCols(size_t pos = 0, size_t numCols = 1);

    /**
        Exactly the same as AppendRows() but for columns.
     */
    virtual bool AppendCols(size_t numCols = 1);

    /**
        Exactly the same as DeleteRows() but for columns.
     */
    virtual bool DeleteCols(size_t pos = 0, size_t numCols = 1);

    //@}

    /**
        @name Table Row and Column Labels

        By default the numbers are used for labeling rows and Latin letters for
        labeling columns. If the table has more than 26 columns, the pairs of
        letters are used starting from the 27-th one and so on, i.e. the
        sequence of labels is A, B, ..., Z, AA, AB, ..., AZ, BA, ..., ..., ZZ,
        AAA, ...
     */
    //@{

    /**
        Return the label of the specified row.
     */
    virtual wxString GetRowLabelValue(int row);

    /**
        Return the label of the specified column.
     */
    virtual wxString GetColLabelValue(int col);

    /**
        Set the given label for the specified row.

        The default version does nothing, i.e. the label is not stored. You
        must override this method in your derived class if you wish
        wxGrid::SetRowLabelValue() to work.
     */
    virtual void SetRowLabelValue(int row, const wxString& label);

    /**
        Exactly the same as SetRowLabelValue() but for columns.
     */
    virtual void SetColLabelValue(int col, const wxString& label);

    //@}


    /**
        @name Attributes Management

        By default the attributes management is delegated to
        wxGridCellAttrProvider class. You may override the methods in this
        section to handle the attributes directly if, for example, they can be
        computed from the cell values.
     */
    //@{

    /**
        Associate this attributes provider with the table.

        The table takes ownership of @a attrProvider pointer and will delete it
        when it doesn't need it any more. The pointer can be @NULL, however
        this won't disable attributes management in the table but will just
        result in a default attributes being recreated the next time any of the
        other functions in this section is called. To completely disable the
        attributes support, should this be needed, you need to override
        CanHaveAttributes() to return @false.
     */
    void SetAttrProvider(wxGridCellAttrProvider *attrProvider);

    /**
        Returns the attribute provider currently being used.

        This function may return @NULL if the attribute provider hasn't been
        neither associated with this table by SetAttrProvider() nor created on
        demand by any other methods.
     */
    wxGridCellAttrProvider *GetAttrProvider() const;

    /**
        Return the attribute for the given cell.

        By default this function is simply forwarded to
        wxGridCellAttrProvider::GetAttr() but it may be overridden to handle
        attributes directly in the table.
     */
    virtual wxGridCellAttr *GetAttr(int row, int col,
                                    wxGridCellAttr::wxAttrKind kind);

    /**
        Set attribute of the specified cell.

        By default this function is simply forwarded to
        wxGridCellAttrProvider::SetAttr().

        The table takes ownership of @a attr, i.e. will call DecRef() on it.
     */
    virtual void SetAttr(wxGridCellAttr* attr, int row, int col);

    /**
        Set attribute of the specified row.

        By default this function is simply forwarded to
        wxGridCellAttrProvider::SetRowAttr().

        The table takes ownership of @a attr, i.e. will call DecRef() on it.
     */
    virtual void SetRowAttr(wxGridCellAttr *attr, int row);

    /**
        Set attribute of the specified column.

        By default this function is simply forwarded to
        wxGridCellAttrProvider::SetColAttr().

        The table takes ownership of @a attr, i.e. will call DecRef() on it.
     */
    virtual void SetColAttr(wxGridCellAttr *attr, int col);

    //@}

    /**
        Returns true if this table supports attributes or false otherwise.

        By default, the table automatically creates a wxGridCellAttrProvider
        when this function is called if it had no attribute provider before and
        returns @true.
     */
    virtual bool CanHaveAttributes();
};

/**
    @class wxGridSizesInfo

    wxGridSizesInfo stores information about sizes of all wxGrid rows or
    columns.

    It assumes that most of the rows or columns (which are both called elements
    here as the difference between them doesn't matter at this class level)
    have the default size and so stores it separately. And it uses a wxHashMap
    to store the sizes of all elements which have the non-default size.

    This structure is particularly useful for serializing the sizes of all
    wxGrid elements at once.

    @library{wxadv}
    @category{grid}
 */
struct wxGridSizesInfo
{
    /**
        Default constructor.

        m_sizeDefault and m_customSizes must be initialized later.
     */
    wxGridSizesInfo();

    /**
        Constructor.

        This constructor is used by wxGrid::GetRowSizes() and GetColSizes()
        methods. User code will usually use the default constructor instead.

        @param defSize
            The default element size.
        @param allSizes
            Array containing the sizes of @em all elements, including those
            which have the default size.
     */
    wxGridSizesInfo(int defSize, const wxArrayInt& allSizes);

    /**
        Get the element size.

        @param pos
            The index of the element.
        @return
            The size for this element, using m_customSizes if @a pos is in it
            or m_sizeDefault otherwise.
     */
    int GetSize(unsigned pos) const;


    /// Default size
    int m_sizeDefault;

    /**
        Map with element indices as keys and their sizes as values.

        This map only contains the elements with non-default size.
     */
    wxUnsignedToIntHashMap m_customSizes;
};


/**
    @class wxGrid

    wxGrid and its related classes are used for displaying and editing tabular
    data. They provide a rich set of features for display, editing, and
    interacting with a variety of data sources. For simple applications, and to
    help you get started, wxGrid is the only class you need to refer to
    directly. It will set up default instances of the other classes and manage
    them for you. For more complex applications you can derive your own classes
    for custom grid views, grid data tables, cell editors and renderers. The
    @ref overview_grid has examples of simple and more complex applications,
    explains the relationship between the various grid classes and has a
    summary of the keyboard shortcuts and mouse functions provided by wxGrid.

    A wxGridTableBase class holds the actual data to be displayed by a wxGrid
    class. One or more wxGrid classes may act as a view for one table class.
    The default table class is called wxGridStringTable and holds an array of
    strings. An instance of such a class is created by CreateGrid().

    wxGridCellRenderer is the abstract base class for rendering contents in a
    cell. The following renderers are predefined:

    - wxGridCellBoolRenderer
    - wxGridCellFloatRenderer
    - wxGridCellNumberRenderer
    - wxGridCellStringRenderer

    The look of a cell can be further defined using wxGridCellAttr. An object
    of this type may be returned by wxGridTableBase::GetAttr().

    wxGridCellEditor is the abstract base class for editing the value of a
    cell. The following editors are predefined:

    - wxGridCellBoolEditor
    - wxGridCellChoiceEditor
    - wxGridCellFloatEditor
    - wxGridCellNumberEditor
    - wxGridCellTextEditor

    Please see wxGridEvent, wxGridSizeEvent, wxGridRangeSelectEvent, and
    wxGridEditorCreatedEvent for the documentation of all event types you can
    use with wxGrid.

    @library{wxadv}
    @category{grid}

    @see @ref overview_grid, wxGridUpdateLocker
*/
class wxGrid : public wxScrolledWindow
{
public:

    /**
        Different selection modes supported by the grid.
     */
    enum wxGridSelectionModes
    {
        /**
            The default selection mode allowing selection of the individual
            cells as well as of the entire rows and columns.
         */
        wxGridSelectCells,

        /**
            The selection mode allowing the selection of the entire rows only.

            The user won't be able to select any cells or columns in this mode.
         */
        wxGridSelectRows,

        /**
            The selection mode allowing the selection of the entire columns only.

            The user won't be able to select any cells or rows in this mode.
         */
        wxGridSelectColumns,

        /**
            The selection mode allowing the user to select either the entire
            columns or the entire rows but not individual cells nor blocks.

            Notice that while this constant is defined as @code
            wxGridSelectColumns | wxGridSelectRows @endcode this doesn't mean
            that all the other combinations are valid -- at least currently
            they are not.

            @since 2.9.1
         */
        wxGridSelectRowsOrColumns
    };

    /**
        Return values for GetCellSize().

        @since 2.9.1
     */
    enum CellSpan
    {
        /// This cell is inside a span covered by another cell.
        CellSpan_Inside = -1,

        /// This is a normal, non-spanning cell.
        CellSpan_None = 0,

        /// This cell spans several physical wxGrid cells.
        CellSpan_Main
    };

    /**
        @name Constructors and Initialization
     */
    //@{

    /**
        Default constructor.

        You must call Create() to really create the grid window and also call
        CreateGrid() or SetTable() to initialize the grid contents.
     */
    wxGrid();
    /**
        Constructor creating the grid window.

        You must call either CreateGrid() or SetTable() to initialize the grid
        contents before using it.
    */
    wxGrid(wxWindow* parent, wxWindowID id,
           const wxPoint& pos = wxDefaultPosition,
           const wxSize& size = wxDefaultSize,
           long style = wxWANTS_CHARS,
           const wxString& name = wxGridNameStr);

    /**
        Destructor.

        This will also destroy the associated grid table unless you passed a
        table object to the grid and specified that the grid should not take
        ownership of the table (see SetTable()).
    */
    virtual ~wxGrid();

    /**
        Creates the grid window for an object initialized using the default
        constructor.

        You must call either CreateGrid() or SetTable() to initialize the grid
        contents before using it.
     */
    bool Create(wxWindow* parent, wxWindowID id,
                const wxPoint& pos = wxDefaultPosition,
                const wxSize& size = wxDefaultSize,
                long style = wxWANTS_CHARS,
                const wxString& name = wxGridNameStr);

    /**
        Creates a grid with the specified initial number of rows and columns.

        Call this directly after the grid constructor. When you use this
        function wxGrid will create and manage a simple table of string values
        for you. All of the grid data will be stored in memory.

        For applications with more complex data types or relationships, or for
        dealing with very large datasets, you should derive your own grid table
        class and pass a table object to the grid with SetTable().
    */
    bool CreateGrid(int numRows, int numCols,
                    wxGridSelectionModes selmode = wxGridSelectCells);

    /**
        Passes a pointer to a custom grid table to be used by the grid.

        This should be called after the grid constructor and before using the
        grid object. If @a takeOwnership is set to @true then the table will be
        deleted by the wxGrid destructor.

        Use this function instead of CreateGrid() when your application
        involves complex or non-string data or data sets that are too large to
        fit wholly in memory.
    */
    bool SetTable(wxGridTableBase* table, bool takeOwnership = false,
                  wxGridSelectionModes selmode = wxGridSelectCells);

    //@}


    /**
        @name Grid Line Formatting
     */
    //@{

    /**
        Turns the drawing of grid lines on or off.
    */
    void EnableGridLines(bool enable = true);

    /**
        Returns the pen used for vertical grid lines.

        This virtual function may be overridden in derived classes in order to
        change the appearance of individual grid lines for the given column
        @a col.

        See GetRowGridLinePen() for an example.
    */
    virtual wxPen GetColGridLinePen(int col);

    /**
        Returns the pen used for grid lines.

        This virtual function may be overridden in derived classes in order to
        change the appearance of grid lines. Note that currently the pen width
        must be 1.

        @see GetColGridLinePen(), GetRowGridLinePen()
    */
    virtual wxPen GetDefaultGridLinePen();

    /**
        Returns the colour used for grid lines.

        @see GetDefaultGridLinePen()
    */
    wxColour GetGridLineColour() const;

    /**
        Returns the pen used for horizontal grid lines.

        This virtual function may be overridden in derived classes in order to
        change the appearance of individual grid line for the given @a row.

        Example:
        @code
        // in a grid displaying music notation, use a solid black pen between
        // octaves (C0=row 127, C1=row 115 etc.)
        wxPen MidiGrid::GetRowGridLinePen(int row)
        {
            if ( row % 12 == 7 )
                return wxPen(*wxBLACK, 1, wxSOLID);
            else
                return GetDefaultGridLinePen();
        }
        @endcode
    */
    virtual wxPen GetRowGridLinePen(int row);

    /**
        Returns @true if drawing of grid lines is turned on, @false otherwise.
    */
    bool GridLinesEnabled() const;

    /**
        Sets the colour used to draw grid lines.
    */
    void SetGridLineColour(const wxColour& colour);

    //@}


    /**
        @name Label Values and Formatting
     */
    //@{

    /**
        Sets the arguments to the current column label alignment values.

        Horizontal alignment will be one of @c wxALIGN_LEFT, @c wxALIGN_CENTRE
        or @c wxALIGN_RIGHT.

        Vertical alignment will be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE or
        @c wxALIGN_BOTTOM.
    */
    void GetColLabelAlignment(int* horiz, int* vert) const;

    /**
        Returns the orientation of the column labels (either @c wxHORIZONTAL or
        @c wxVERTICAL).
    */
    int GetColLabelTextOrientation() const;

    /**
        Returns the specified column label.

        The default grid table class provides column labels of the form
        A,B...Z,AA,AB...ZZ,AAA... If you are using a custom grid table you can
        override wxGridTableBase::GetColLabelValue() to provide your own
        labels.
    */
    wxString GetColLabelValue(int col) const;

    /**
        Returns the colour used for the background of row and column labels.
    */
    wxColour GetLabelBackgroundColour() const;

    /**
        Returns the font used for row and column labels.
    */
    wxFont GetLabelFont() const;

    /**
        Returns the colour used for row and column label text.
    */
    wxColour GetLabelTextColour() const;

    /**
        Returns the alignment used for row labels.

        Horizontal alignment will be one of @c wxALIGN_LEFT, @c wxALIGN_CENTRE
        or @c wxALIGN_RIGHT.

        Vertical alignment will be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE or
        @c wxALIGN_BOTTOM.
    */
    void GetRowLabelAlignment(int* horiz, int* vert) const;

    /**
        Returns the specified row label.

        The default grid table class provides numeric row labels. If you are
        using a custom grid table you can override
        wxGridTableBase::GetRowLabelValue() to provide your own labels.
    */
    wxString GetRowLabelValue(int row) const;

    /**
        Hides the column labels by calling SetColLabelSize() with a size of 0.
        Show labels again by calling that method with a width greater than 0.
    */
    void HideColLabels();

    /**
        Hides the row labels by calling SetRowLabelSize() with a size of 0.

        The labels can be shown again by calling SetRowLabelSize() with a width
        greater than 0.
    */
    void HideRowLabels();

    /**
        Sets the horizontal and vertical alignment of column label text.

        Horizontal alignment should be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT. Vertical alignment should be one
        of @c wxALIGN_TOP, @c wxALIGN_CENTRE or @c wxALIGN_BOTTOM.
    */
    void SetColLabelAlignment(int horiz, int vert);

    /**
        Sets the orientation of the column labels (either @c wxHORIZONTAL or
        @c wxVERTICAL).
    */
    void SetColLabelTextOrientation(int textOrientation);

    /**
        Set the value for the given column label.

        If you are using a custom grid table you must override
        wxGridTableBase::SetColLabelValue() for this to have any effect.
    */
    void SetColLabelValue(int col, const wxString& value);

    /**
        Sets the background colour for row and column labels.
    */
    void SetLabelBackgroundColour(const wxColour& colour);

    /**
        Sets the font for row and column labels.
    */
    void SetLabelFont(const wxFont& font);

    /**
        Sets the colour for row and column label text.
    */
    void SetLabelTextColour(const wxColour& colour);

    /**
        Sets the horizontal and vertical alignment of row label text.

        Horizontal alignment should be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT. Vertical alignment should be one
        of @c wxALIGN_TOP, @c wxALIGN_CENTRE or @c wxALIGN_BOTTOM.
    */
    void SetRowLabelAlignment(int horiz, int vert);

    /**
        Sets the value for the given row label.

        If you are using a derived grid table you must override
        wxGridTableBase::SetRowLabelValue() for this to have any effect.
    */
    void SetRowLabelValue(int row, const wxString& value);

    /**
        Call this in order to make the column labels use a native look by using
        wxRendererNative::DrawHeaderButton() internally.

        There is no equivalent method for drawing row columns as there is not
        native look for that. This option is useful when using wxGrid for
        displaying tables and not as a spread-sheet.

        @see UseNativeColHeader()
    */
    void SetUseNativeColLabels(bool native = true);

    /**
        Enable the use of native header window for column labels.

        If this function is called with @true argument, a wxHeaderCtrl is used
        instead to display the column labels instead of drawing them in wxGrid
        code itself. This has the advantage of making the grid look and feel
        perfectly the same as native applications (using SetUseNativeColLabels()
        the grid can be made to look more natively but it still doesn't feel
        natively, notably the column resizing and dragging still works slightly
        differently as it is implemented in wxWidgets itself) but results in
        different behaviour for column and row headers, for which there is no
        equivalent function, and, most importantly, is unsuitable for grids
        with huge numbers of columns as wxHeaderCtrl doesn't support virtual
        mode. Because of this, by default the grid does not use the native
        header control but you should call this function to enable it if you
        are using the grid to display tabular data and don't have thousands of
        columns in it.

        Another difference between the default behaviour and the native header
        behaviour is that the latter provides the user with a context menu
        (which appears on right clicking the header) allowing to rearrange the
        grid columns if CanDragColMove() returns @true. If you want to prevent
        this from happening for some reason, you need to define a handler for
        @c wxEVT_GRID_LABEL_RIGHT_CLICK event which simply does nothing (in
        particular doesn't skip the event) as this will prevent the default
        right click handling from working.

        Also note that currently @c wxEVT_GRID_LABEL_RIGHT_DCLICK event is not
        generated for the column labels if the native columns header is used
        (but this limitation could possibly be lifted in the future).
     */
    void UseNativeColHeader(bool native = true);

    //@}


    /**
        @name Cell Formatting

        Note that wxGridCellAttr can be used alternatively to most of these
        methods. See the "Attributes Management" of wxGridTableBase.
     */
    //@{

    /**
        Sets the arguments to the horizontal and vertical text alignment values
        for the grid cell at the specified location.

        Horizontal alignment will be one of @c wxALIGN_LEFT, @c wxALIGN_CENTRE
        or @c wxALIGN_RIGHT.

        Vertical alignment will be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE or
        @c wxALIGN_BOTTOM.
    */
    void GetCellAlignment(int row, int col, int* horiz, int* vert) const;

    /**
        Returns the background colour of the cell at the specified location.
    */
    wxColour GetCellBackgroundColour(int row, int col) const;

    /**
        Returns the font for text in the grid cell at the specified location.
    */
    wxFont GetCellFont(int row, int col) const;

    /**
        Returns the text colour for the grid cell at the specified location.
    */
    wxColour GetCellTextColour(int row, int col) const;

    /**
        Returns the default cell alignment.

        Horizontal alignment will be one of @c wxALIGN_LEFT, @c wxALIGN_CENTRE
        or @c wxALIGN_RIGHT.

        Vertical alignment will be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE or
        @c wxALIGN_BOTTOM.

        @see SetDefaultCellAlignment()
    */
    void GetDefaultCellAlignment(int* horiz, int* vert) const;

    /**
        Returns the current default background colour for grid cells.
    */
    wxColour GetDefaultCellBackgroundColour() const;

    /**
        Returns the current default font for grid cell text.
    */
    wxFont GetDefaultCellFont() const;

    /**
        Returns the current default colour for grid cell text.
    */
    wxColour GetDefaultCellTextColour() const;

    /**
        Sets the horizontal and vertical alignment for grid cell text at the
        specified location.

        Horizontal alignment should be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT.

        Vertical alignment should be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE
        or @c wxALIGN_BOTTOM.
    */
    void SetCellAlignment(int row, int col, int horiz, int vert);
    /**
        Sets the horizontal and vertical alignment for grid cell text at the
        specified location.

        Horizontal alignment should be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT.

        Vertical alignment should be one of @c wxALIGN_TOP, @c wxALIGN_CENTRE
        or @c wxALIGN_BOTTOM.
    */
    void SetCellAlignment(int align, int row, int col);

    /**
        Set the background colour for the given cell or all cells by default.
    */
    void SetCellBackgroundColour(int row, int col, const wxColour& colour);

    /**
        Sets the font for text in the grid cell at the specified location.
    */
    void SetCellFont(int row, int col, const wxFont& font);

    /**
        Sets the text colour for the given cell.
    */
    void SetCellTextColour(int row, int col, const wxColour& colour);
    /**
        Sets the text colour for the given cell.
    */
    void SetCellTextColour(const wxColour& val, int row, int col);
    /**
        Sets the text colour for all cells by default.
    */
    void SetCellTextColour(const wxColour& colour);

    /**
        Sets the default horizontal and vertical alignment for grid cell text.

        Horizontal alignment should be one of @c wxALIGN_LEFT,
        @c wxALIGN_CENTRE or @c wxALIGN_RIGHT. Vertical alignment should be one
        of @c wxALIGN_TOP, @c wxALIGN_CENTRE or @c wxALIGN_BOTTOM.
    */
    void SetDefaultCellAlignment(int horiz, int vert);

    /**
        Sets the default background colour for grid cells.
    */
    void SetDefaultCellBackgroundColour(const wxColour& colour);

    /**
        Sets the default font to be used for grid cell text.
    */
    void SetDefaultCellFont(const wxFont& font);

    /**
        Sets the current default colour for grid cell text.
    */
    void SetDefaultCellTextColour(const wxColour& colour);

    //@}


    /**
        @name Cell Values, Editors, and Renderers

        Note that wxGridCellAttr can be used alternatively to most of these
        methods. See the "Attributes Management" of wxGridTableBase.
     */
    //@{

    /**
        Returns @true if the in-place edit control for the current grid cell
        can be used and @false otherwise.

        This function always returns @false for the read-only cells.
    */
    bool CanEnableCellControl() const;

    /**
        Disables in-place editing of grid cells.

        Equivalent to calling EnableCellEditControl(@false).
    */
    void DisableCellEditControl();

    /**
        Enables or disables in-place editing of grid cell data.

        The grid will issue either a @c wxEVT_GRID_EDITOR_SHOWN or
        @c wxEVT_GRID_EDITOR_HIDDEN event.
    */
    void EnableCellEditControl(bool enable = true);

    /**
        Makes the grid globally editable or read-only.

        If the edit argument is @false this function sets the whole grid as
        read-only. If the argument is @true the grid is set to the default
        state where cells may be editable. In the default state you can set
        single grid cells and whole rows and columns to be editable or
        read-only via wxGridCellAttr::SetReadOnly(). For single cells you
        can also use the shortcut function SetReadOnly().

        For more information about controlling grid cell attributes see the
        wxGridCellAttr class and the @ref overview_grid.
    */
    void EnableEditing(bool edit);

    /**
        Returns a pointer to the editor for the cell at the specified location.

        See wxGridCellEditor and the @ref overview_grid for more information
        about cell editors and renderers.

        The caller must call DecRef() on the returned pointer.
    */
    wxGridCellEditor* GetCellEditor(int row, int col) const;

    /**
        Returns a pointer to the renderer for the grid cell at the specified
        location.

        See wxGridCellRenderer and the @ref overview_grid for more information
        about cell editors and renderers.

        The caller must call DecRef() on the returned pointer.
    */
    wxGridCellRenderer* GetCellRenderer(int row, int col) const;

    /**
        Returns the string contained in the cell at the specified location.

        For simple applications where a grid object automatically uses a
        default grid table of string values you use this function together with
        SetCellValue() to access cell values. For more complex applications
        where you have derived your own grid table class that contains various
        data types (e.g. numeric, boolean or user-defined custom types) then
        you only use this function for those cells that contain string values.

        See wxGridTableBase::CanGetValueAs() and the @ref overview_grid for
        more information.
    */
    wxString GetCellValue(int row, int col) const;
    /**
        Returns the string contained in the cell at the specified location.

        For simple applications where a grid object automatically uses a
        default grid table of string values you use this function together with
        SetCellValue() to access cell values. For more complex applications
        where you have derived your own grid table class that contains various
        data types (e.g. numeric, boolean or user-defined custom types) then
        you only use this function for those cells that contain string values.

        See wxGridTableBase::CanGetValueAs() and the @ref overview_grid for
        more information.
    */
    wxString GetCellValue(const wxGridCellCoords& coords) const;

    /**
        Returns a pointer to the current default grid cell editor.

        See wxGridCellEditor and the @ref overview_grid for more information
        about cell editors and renderers.
    */
    wxGridCellEditor* GetDefaultEditor() const;

    /**
        Returns the default editor for the specified cell.

        The base class version returns the editor appropriate for the current
        cell type but this method may be overridden in the derived classes to
        use custom editors for some cells by default.

        Notice that the same may be achieved in a usually simpler way by
        associating a custom editor with the given cell or cells.

        The caller must call DecRef() on the returned pointer.
    */
    virtual wxGridCellEditor* GetDefaultEditorForCell(int row, int col) const;
    /**
        Returns the default editor for the specified cell.

        The base class version returns the editor appropriate for the current
        cell type but this method may be overridden in the derived classes to
        use custom editors for some cells by default.

        Notice that the same may be achieved in a usually simpler way by
        associating a custom editor with the given cell or cells.

        The caller must call DecRef() on the returned pointer.
    */
    wxGridCellEditor* GetDefaultEditorForCell(const wxGridCellCoords& c) const;

    /**
        Returns the default editor for the cells containing values of the given
        type.

        The base class version returns the editor which was associated with the
        specified @a typeName when it was registered RegisterDataType() but
        this function may be overridden to return something different. This
        allows to override an editor used for one of the standard types.

        The caller must call DecRef() on the returned pointer.
    */
    virtual wxGridCellEditor* GetDefaultEditorForType(const wxString& typeName) const;

    /**
        Returns a pointer to the current default grid cell renderer.

        See wxGridCellRenderer and the @ref overview_grid for more information
        about cell editors and renderers.

        The caller must call DecRef() on the returned pointer.
    */
    wxGridCellRenderer* GetDefaultRenderer() const;

    /**
        Returns the default renderer for the given cell.

        The base class version returns the renderer appropriate for the current
        cell type but this method may be overridden in the derived classes to
        use custom renderers for some cells by default.

        The caller must call DecRef() on the returned pointer.
    */
    virtual wxGridCellRenderer* GetDefaultRendererForCell(int row, int col) const;

    /**
        Returns the default renderer for the cell containing values of the
        given type.

        @see GetDefaultEditorForType()
    */
    virtual wxGridCellRenderer* GetDefaultRendererForType(const wxString& typeName) const;

    /**
        Hides the in-place cell edit control.
    */
    void HideCellEditControl();

    /**
        Returns @true if the in-place edit control is currently enabled.
    */
    bool IsCellEditControlEnabled() const;

    /**
        Returns @true if the current cell is read-only.

        @see SetReadOnly(), IsReadOnly()
    */
    bool IsCurrentCellReadOnly() const;

    /**
        Returns @false if the whole grid has been set as read-only or @true
        otherwise.

        See EnableEditing() for more information about controlling the editing
        status of grid cells.
    */
    bool IsEditable() const;

    /**
        Returns @true if the cell at the specified location can't be edited.

        @see SetReadOnly(), IsCurrentCellReadOnly()
    */
    bool IsReadOnly(int row, int col) const;

    /**
        Register a new data type.

        The data types allow to naturally associate specific renderers and
        editors to the cells containing values of the given type. For example,
        the grid automatically registers a data type with the name
        @c wxGRID_VALUE_STRING which uses wxGridCellStringRenderer and
        wxGridCellTextEditor as its renderer and editor respectively -- this is
        the data type used by all the cells of the default wxGridStringTable,
        so this renderer and editor are used by default for all grid cells.

        However if a custom table returns @c wxGRID_VALUE_BOOL from its
        wxGridTableBase::GetTypeName() method, then wxGridCellBoolRenderer and
        wxGridCellBoolEditor are used for it because the grid also registers a
        boolean data type with this name.

        And as this mechanism is completely generic, you may register your own
        data types using your own custom renderers and editors. Just remember
        that the table must identify a cell as being of the given type for them
        to be used for this cell.

        @param typeName
            Name of the new type. May be any string, but if the type name is
            the same as the name of an already registered type, including one
            of the standard ones (which are @c wxGRID_VALUE_STRING, @c
            wxGRID_VALUE_BOOL, @c wxGRID_VALUE_NUMBER, @c wxGRID_VALUE_FLOAT
            and @c wxGRID_VALUE_CHOICE), then the new registration information
            replaces the previously used renderer and editor.
        @param renderer
            The renderer to use for the cells of this type. Its ownership is
            taken by the grid, i.e. it will call DecRef() on this pointer when
            it doesn't need it any longer.
        @param editor
            The editor to use for the cells of this type. Its ownership is also
            taken by the grid.
    */
    void RegisterDataType(const wxString& typeName,
                          wxGridCellRenderer* renderer,
                          wxGridCellEditor* editor);

    /**
        Sets the value of the current grid cell to the current in-place edit
        control value.

        This is called automatically when the grid cursor moves from the
        current cell to a new cell. It is also a good idea to call this
        function when closing a grid since any edits to the final cell location
        will not be saved otherwise.
    */
    void SaveEditControlValue();

    /**
        Sets the editor for the grid cell at the specified location.

        The grid will take ownership of the pointer.

        See wxGridCellEditor and the @ref overview_grid for more information
        about cell editors and renderers.
    */
    void SetCellEditor(int row, int col, wxGridCellEditor* editor);

    /**
        Sets the renderer for the grid cell at the specified location.

        The grid will take ownership of the pointer.

        See wxGridCellRenderer and the @ref overview_grid for more information
        about cell editors and renderers.
    */
    void SetCellRenderer(int row, int col, wxGridCellRenderer* renderer);

    /**
        Sets the string value for the cell at the specified location.

        For simple applications where a grid object automatically uses a
        default grid table of string values you use this function together with
        GetCellValue() to access cell values. For more complex applications
        where you have derived your own grid table class that contains various
        data types (e.g. numeric, boolean or user-defined custom types) then
        you only use this function for those cells that contain string values.

        See wxGridTableBase::CanSetValueAs() and the @ref overview_grid for
        more information.
    */
    void SetCellValue(int row, int col, const wxString& s);
    /**
        Sets the string value for the cell at the specified location.

        For simple applications where a grid object automatically uses a
        default grid table of string values you use this function together with
        GetCellValue() to access cell values. For more complex applications
        where you have derived your own grid table class that contains various
        data types (e.g. numeric, boolean or user-defined custom types) then
        you only use this function for those cells that contain string values.

        See wxGridTableBase::CanSetValueAs() and the @ref overview_grid for
        more information.
    */
    void SetCellValue(const wxGridCellCoords& coords, const wxString& s);
    /**
        @deprecated Please use SetCellValue(int,int,const wxString&) or
                    SetCellValue(const wxGridCellCoords&,const wxString&)
                    instead.

        Sets the string value for the cell at the specified location.

        For simple applications where a grid object automatically uses a
        default grid table of string values you use this function together with
        GetCellValue() to access cell values. For more complex applications
        where you have derived your own grid table class that contains various
        data types (e.g. numeric, boolean or user-defined custom types) then
        you only use this function for those cells that contain string values.

        See wxGridTableBase::CanSetValueAs() and the @ref overview_grid for
        more information.
    */
    void SetCellValue(const wxString& val, int row, int col);

    /**
        Sets the specified column to display boolean values.

        @see SetColFormatCustom()
    */
    void SetColFormatBool(int col);

    /**
        Sets the specified column to display data in a custom format.

        This method provides an alternative to defining a custom grid table
        which would return @a typeName from its GetTypeName() method for the
        cells in this column: while it doesn't really change the type of the
        cells in this column, it does associate the renderer and editor used
        for the cells of the specified type with them.

        See the @ref overview_grid for more information on working with custom
        data types.
    */
    void SetColFormatCustom(int col, const wxString& typeName);

    /**
        Sets the specified column to display floating point values with the
        given width and precision.

        @see SetColFormatCustom()
    */
    void SetColFormatFloat(int col, int width = -1, int precision = -1);

    /**
        Sets the specified column to display integer values.

        @see SetColFormatCustom()
    */
    void SetColFormatNumber(int col);

    /**
        Sets the default editor for grid cells.

        The grid will take ownership of the pointer.

        See wxGridCellEditor and the @ref overview_grid for more information
        about cell editors and renderers.
    */
    void SetDefaultEditor(wxGridCellEditor* editor);

    /**
        Sets the default renderer for grid cells.

        The grid will take ownership of the pointer.

        See wxGridCellRenderer and the @ref overview_grid for more information
        about cell editors and renderers.
    */
    void SetDefaultRenderer(wxGridCellRenderer* renderer);

    /**
        Makes the cell at the specified location read-only or editable.

        @see IsReadOnly()
    */
    void SetReadOnly(int row, int col, bool isReadOnly = true);

    /**
        Displays the in-place cell edit control for the current cell.
    */
    void ShowCellEditControl();

    //@}


    /**
        @name Column and Row Sizes

        @see @ref overview_grid_resizing
     */
    //@{

    /**
        Automatically sets the height and width of all rows and columns to fit
        their contents.
    */
    void AutoSize();

    /**
        Automatically adjusts width of the column to fit its label.
    */
    void AutoSizeColLabelSize(int col);

    /**
        Automatically sizes the column to fit its contents. If @a setAsMin is
        @true the calculated width will also be set as the minimal width for
        the column.
    */
    void AutoSizeColumn(int col, bool setAsMin = true);

    /**
        Automatically sizes all columns to fit their contents. If @a setAsMin
        is @true the calculated widths will also be set as the minimal widths
        for the columns.
    */
    void AutoSizeColumns(bool setAsMin = true);

    /**
        Automatically sizes the row to fit its contents. If @a setAsMin is
        @true the calculated height will also be set as the minimal height for
        the row.
    */
    void AutoSizeRow(int row, bool setAsMin = true);

    /**
        Automatically adjusts height of the row to fit its label.
    */
    void AutoSizeRowLabelSize(int col);

    /**
        Automatically sizes all rows to fit their contents. If @a setAsMin is
        @true the calculated heights will also be set as the minimal heights
        for the rows.
    */
    void AutoSizeRows(bool setAsMin = true);

    /**
        Returns the current height of the column labels.
    */
    int GetColLabelSize() const;

    /**
        Returns the minimal width to which a column may be resized.

        Use SetColMinimalAcceptableWidth() to change this value globally or
        SetColMinimalWidth() to do it for individual columns.

        @see GetRowMinimalAcceptableHeight()
    */
    int GetColMinimalAcceptableWidth() const;

    /**
        Returns the width of the specified column.
    */
    int GetColSize(int col) const;

    /**
        Returns @true if the specified column is not currently hidden.
     */
    bool IsColShown(int col) const;

    /**
        Returns the default height for column labels.
    */
    int GetDefaultColLabelSize() const;

    /**
        Returns the current default width for grid columns.
    */
    int GetDefaultColSize() const;

    /**
        Returns the default width for the row labels.
    */
    int GetDefaultRowLabelSize() const;

    /**
        Returns the current default height for grid rows.
    */
    int GetDefaultRowSize() const;

    /**
        Returns the minimal size to which rows can be resized.

        Use SetRowMinimalAcceptableHeight() to change this value globally or
        SetRowMinimalHeight() to do it for individual cells.

        @see GetColMinimalAcceptableWidth()
    */
    int GetRowMinimalAcceptableHeight() const;

    /**
        Returns the current width of the row labels.
    */
    int GetRowLabelSize() const;

    /**
        Returns the height of the specified row.
    */
    int GetRowSize(int row) const;

    /**
        Returns @true if the specified row is not currently hidden.
     */
    bool IsRowShown(int row) const;

    /**
        Sets the height of the column labels.

        If @a height equals to @c wxGRID_AUTOSIZE then height is calculated
        automatically so that no label is truncated. Note that this could be
        slow for a large table.
    */
    void SetColLabelSize(int height);

    /**
        Sets the minimal @a width to which the user can resize columns.

        @see GetColMinimalAcceptableWidth()
    */
    void SetColMinimalAcceptableWidth(int width);

    /**
        Sets the minimal @a width for the specified column @a col.

        It is usually best to call this method during grid creation as calling
        it later will not resize the column to the given minimal width even if
        it is currently narrower than it.

        @a width must be greater than the minimal acceptable column width as
        returned by GetColMinimalAcceptableWidth().
    */
    void SetColMinimalWidth(int col, int width);

    /**
        Sets the width of the specified column.

        @param col
            The column index.
        @param width
            The new column width in pixels, 0 to hide the column or -1 to fit
            the column width to its label width.
    */
    void SetColSize(int col, int width);

    /**
        Hides the specified column.

        To show the column later you need to call SetColSize() with non-0
        width or ShowCol().

        @param col
            The column index.
     */
    void HideCol(int col);

    /**
        Shows the previously hidden column by resizing it to non-0 size.

        @see HideCol(), SetColSize()
     */
    void ShowCol(int col);


    /**
        Sets the default width for columns in the grid.

        This will only affect columns subsequently added to the grid unless
        @a resizeExistingCols is @true.

        If @a width is less than GetColMinimalAcceptableWidth(), then the
        minimal acceptable width is used instead of it.
    */
    void SetDefaultColSize(int width, bool resizeExistingCols = false);

    /**
        Sets the default height for rows in the grid.

        This will only affect rows subsequently added to the grid unless
        @a resizeExistingRows is @true.

        If @a height is less than GetRowMinimalAcceptableHeight(), then the
        minimal acceptable height is used instead of it.
    */
    void SetDefaultRowSize(int height, bool resizeExistingRows = false);

    /**
        Sets the width of the row labels.

        If @a width equals @c wxGRID_AUTOSIZE then width is calculated
        automatically so that no label is truncated. Note that this could be
        slow for a large table.
    */
    void SetRowLabelSize(int width);

    /**
        Sets the minimal row @a height used by default.

        See SetColMinimalAcceptableWidth() for more information.
    */
    void SetRowMinimalAcceptableHeight(int height);

    /**
        Sets the minimal @a height for the specified @a row.

        See SetColMinimalWidth() for more information.
    */
    void SetRowMinimalHeight(int row, int height);

    /**
        Sets the height of the specified row.

        See SetColSize() for more information.
    */
    void SetRowSize(int row, int height);

    /**
        Hides the specified row.

        To show the row later you need to call SetRowSize() with non-0
        width or ShowRow().

        @param col
            The row index.
     */
    void HideRow(int col);

    /**
        Shows the previously hidden row by resizing it to non-0 size.

        @see HideRow(), SetRowSize()
     */
    void ShowRow(int col);

    /**
        Get size information for all columns at once.

        This method is useful when the information about all column widths
        needs to be saved. The widths can be later restored using
        SetColSizes().

        @sa wxGridSizesInfo, GetRowSizes()
     */
    wxGridSizesInfo GetColSizes() const;

    /**
        Get size information for all row at once.

        @sa wxGridSizesInfo, GetColSizes()
     */
    wxGridSizesInfo GetRowSizes() const;

    /**
        Restore all columns sizes.

        This is usually called with wxGridSizesInfo object previously returned
        by GetColSizes().

        @sa SetRowSizes()
     */
    void SetColSizes(const wxGridSizesInfo& sizeInfo);

    /**
        Restore all rows sizes.

        @sa SetColSizes()
     */
    void SetRowSizes(const wxGridSizesInfo& sizeInfo);

    /**
        Set the size of the cell.

        Specifying a value of more than 1 in @a num_rows or @a num_cols will
        make the cell at (@a row, @a col) span the block of the specified size,
        covering the other cells which would be normally shown in it. Passing 1
        for both arguments resets the cell to normal appearance.

        @see GetCellSize()

        @param row
            The row of the cell.
        @param col
            The column of the cell.
        @param num_rows
            Number of rows to be occupied by this cell, must be >= 1.
        @param num_cols
            Number of columns to be occupied by this cell, must be >= 1.
     */
    void SetCellSize(int row, int col, int num_rows, int num_cols);

    /**
        Get the size of the cell in number of cells covered by it.

        For normal cells, the function fills both @a num_rows and @a num_cols
        with 1 and returns CellSpan_None. For cells which span multiple cells, i.e.
        for which SetCellSize() had been called, the returned values are the
        same ones as were passed to SetCellSize() call and the function return
        value is CellSpan_Main.

        More unexpectedly, perhaps, the returned values may be @em negative for
        the cells which are inside a span covered by a cell occupying multiple
        rows or columns. They correspond to the offset of the main cell of the
        span from the cell passed to this functions and the function returns
        CellSpan_Inside value to indicate this.

        As an example, consider a 3*3 grid with the cell (1, 1) (the one in the
        middle) having a span of 2 rows and 2 columns, i.e. the grid looks like
        @code
            +----+----+----+
            |    |    |    |
            +----+----+----+
            |    |         |
            +----+         |
            |    |         |
            +----+----+----+
        @endcode
        Then the function returns 2 and 2 in @a num_rows and @a num_cols for
        the cell (1, 1) itself and -1 and -1 for the cell (2, 2) as well as -1
        and 0 for the cell (2, 1).

        @param row
            The row of the cell.
        @param col
            The column of the cell.
        @param num_rows
            Pointer to variable receiving the number of rows, must not be @NULL.
        @param num_cols
            Pointer to variable receiving the number of columns, must not be
            @NULL.
        @return
            The kind of this cell span (the return value is new in wxWidgets
            2.9.1, this function was void in previous wxWidgets versions).
     */
    CellSpan GetCellSize( int row, int col, int *num_rows, int *num_cols ) const;

    /**
        Get the number of rows and columns allocated for this cell.

        This overload doesn't return a CellSpan value but the values returned
        may still be negative, see GetCellSize(int, int, int *, int *) for
        details.
     */
    wxSize GetCellSize(const wxGridCellCoords& coords);

    //@}


    /**
        @name User-Resizing and Dragging

        Functions controlling various interactive mouse operations.

        By default, columns and rows can be resized by dragging the edges of
        their labels (this can be disabled using DisableDragColSize() and
        DisableDragRowSize() methods). And if grid line dragging is enabled with
        EnableDragGridSize() they can also be resized by dragging the right or
        bottom edge of the grid cells.

        Columns can also be moved to interactively change their order but this
        needs to be explicitly enabled with EnableDragColMove().
     */
    //@{

    /**
        Return @true if the dragging of cells is enabled or @false otherwise.
    */
    bool CanDragCell() const;

    /**
        Returns @true if columns can be moved by dragging with the mouse.

        Columns can be moved by dragging on their labels.
    */
    bool CanDragColMove() const;

    /**
        Returns @true if the given column can be resized by dragging with the
        mouse.

        This function returns @true if resizing the columns interactively is
        globally enabled, i.e. if DisableDragColSize() hadn't been called, and
        if this column wasn't explicitly marked as non-resizable with
        DisableColResize().
    */
    bool CanDragColSize(int col) const;

    /**
        Return @true if the dragging of grid lines to resize rows and columns
        is enabled or @false otherwise.
    */
    bool CanDragGridSize() const;

    /**
        Returns @true if the given row can be resized by dragging with the
        mouse.

        This is the same as CanDragColSize() but for rows.
    */
    bool CanDragRowSize(int row) const;

    /**
        Disable interactive resizing of the specified column.

        This method allows to disable resizing of an individual column in a
        grid where the columns are otherwise resizable (which is the case by
        default).

        Notice that currently there is no way to make some columns resizable in
        a grid where columns can't be resized by default as there doesn't seem
        to be any need for this in practice. There is also no way to make the
        column marked as fixed using this method resizable again because it is
        supposed that fixed columns are used for static parts of the grid and
        so should remain fixed during the entire grid lifetime.

        Also notice that disabling interactive column resizing will not prevent
        the program from changing the column size.

        @see EnableDragColSize()
     */
    void DisableColResize(int col);

    /**
        Disable interactive resizing of the specified row.

        This is the same as DisableColResize() but for rows.

        @see EnableDragRowSize()
     */
    void DisableRowResize(int row);

    /**
        Disables column moving by dragging with the mouse.

        Equivalent to passing @false to EnableDragColMove().
    */
    void DisableDragColMove();

    /**
        Disables column sizing by dragging with the mouse.

        Equivalent to passing @false to EnableDragColSize().
    */
    void DisableDragColSize();

    /**
        Disable mouse dragging of grid lines to resize rows and columns.

        Equivalent to passing @false to EnableDragGridSize()
    */
    void DisableDragGridSize();

    /**
        Disables row sizing by dragging with the mouse.

        Equivalent to passing @false to EnableDragRowSize().
    */
    void DisableDragRowSize();

    /**
        Enables or disables cell dragging with the mouse.
    */
    void EnableDragCell(bool enable = true);

    /**
        Enables or disables column moving by dragging with the mouse.
    */
    void EnableDragColMove(bool enable = true);

    /**
        Enables or disables column sizing by dragging with the mouse.

        @see DisableColResize()
    */
    void EnableDragColSize(bool enable = true);

    /**
        Enables or disables row and column resizing by dragging gridlines with
        the mouse.
    */
    void EnableDragGridSize(bool enable = true);

    /**
        Enables or disables row sizing by dragging with the mouse.

        @see DisableRowResize()
    */
    void EnableDragRowSize(bool enable = true);

    /**
        Returns the column ID of the specified column position.
    */
    int GetColAt(int colPos) const;

    /**
        Returns the position of the specified column.
    */
    int GetColPos(int colID) const;

    /**
        Sets the position of the specified column.
    */
    void SetColPos(int colID, int newPos);

    /**
        Sets the positions of all columns at once.

        This method takes an array containing the indices of the columns in
        their display order, i.e. uses the same convention as
        wxHeaderCtrl::SetColumnsOrder().
    */
    void SetColumnsOrder(const wxArrayInt& order);

    /**
        Resets the position of the columns to the default.
    */
    void ResetColPos();

    //@}


    /**
        @name Cursor Movement
    */
    //@{

    /**
        Returns the current grid cell column position.
    */
    int GetGridCursorCol() const;

    /**
        Returns the current grid cell row position.
    */
    int GetGridCursorRow() const;

    /**
        Make the given cell current and ensure it is visible.

        This method is equivalent to calling MakeCellVisible() and
        SetGridCursor() and so, as with the latter, a @c wxEVT_GRID_SELECT_CELL
        event is generated by it and the selected cell doesn't change if the
        event is vetoed.
     */
    void GoToCell(int row, int col);
    /**
        Make the given cell current and ensure it is visible.

        This method is equivalent to calling MakeCellVisible() and
        SetGridCursor() and so, as with the latter, a @c wxEVT_GRID_SELECT_CELL
        event is generated by it and the selected cell doesn't change if the
        event is vetoed.
     */
    void GoToCell(const wxGridCellCoords& coords);

    /**
        Moves the grid cursor down by one row.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorDown(bool expandSelection);

    /**
        Moves the grid cursor down in the current column such that it skips to
        the beginning or end of a block of non-empty cells.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorDownBlock(bool expandSelection);

    /**
        Moves the grid cursor left by one column.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorLeft(bool expandSelection);

    /**
        Moves the grid cursor left in the current row such that it skips to the
        beginning or end of a block of non-empty cells.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorLeftBlock(bool expandSelection);

    /**
        Moves the grid cursor right by one column.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorRight(bool expandSelection);

    /**
        Moves the grid cursor right in the current row such that it skips to
        the beginning or end of a block of non-empty cells.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorRightBlock(bool expandSelection);

    /**
        Moves the grid cursor up by one row.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorUp(bool expandSelection);

    /**
        Moves the grid cursor up in the current column such that it skips to
        the beginning or end of a block of non-empty cells.

        If a block of cells was previously selected it will expand if the
        argument is @true or be cleared if the argument is @false.
    */
    bool MoveCursorUpBlock(bool expandSelection);

    /**
        Moves the grid cursor down by some number of rows so that the previous
        bottom visible row becomes the top visible row.
    */
    bool MovePageDown();

    /**
        Moves the grid cursor up by some number of rows so that the previous
        top visible row becomes the bottom visible row.
    */
    bool MovePageUp();

    /**
        Set the grid cursor to the specified cell.

        The grid cursor indicates the current cell and can be moved by the user
        using the arrow keys or the mouse.

        Calling this function generates a @c wxEVT_GRID_SELECT_CELL event and
        if the event handler vetoes this event, the cursor is not moved.

        This function doesn't make the target call visible, use GoToCell() to
        do this.
    */
    void SetGridCursor(int row, int col);
    /**
        Set the grid cursor to the specified cell.

        The grid cursor indicates the current cell and can be moved by the user
        using the arrow keys or the mouse.

        Calling this function generates a @c wxEVT_GRID_SELECT_CELL event and
        if the event handler vetoes this event, the cursor is not moved.

        This function doesn't make the target call visible, use GoToCell() to
        do this.
    */
    void SetGridCursor(const wxGridCellCoords& coords);

    //@}


    /**
        @name User Selection
     */
    //@{

    /**
        Deselects all cells that are currently selected.
    */
    void ClearSelection();

    /**
        Returns an array of individually selected cells.

        Notice that this array does @em not contain all the selected cells in
        general as it doesn't include the cells selected as part of column, row
        or block selection. You must use this method, GetSelectedCols(),
        GetSelectedRows() and GetSelectionBlockTopLeft() and
        GetSelectionBlockBottomRight() methods to obtain the entire selection
        in general.

        Please notice this behaviour is by design and is needed in order to
        support grids of arbitrary size (when an entire column is selected in
        a grid with a million of columns, we don't want to create an array with
        a million of entries in this function, instead it returns an empty
        array and GetSelectedCols() returns an array containing one element).
    */
    wxGridCellCoordsArray GetSelectedCells() const;

    /**
        Returns an array of selected columns.

        Please notice that this method alone is not sufficient to find all the
        selected columns as it contains only the columns which were
        individually selected but not those being part of the block selection
        or being selected in virtue of all of their cells being selected
        individually, please see GetSelectedCells() for more details.
    */
    wxArrayInt GetSelectedCols() const;

    /**
        Returns an array of selected rows.

        Please notice that this method alone is not sufficient to find all the
        selected rows as it contains only the rows which were individually
        selected but not those being part of the block selection or being
        selected in virtue of all of their cells being selected individually,
        please see GetSelectedCells() for more details.
    */
    wxArrayInt GetSelectedRows() const;

    /**
        Returns the colour used for drawing the selection background.
    */
    wxColour GetSelectionBackground() const;

    /**
        Returns an array of the bottom right corners of blocks of selected
        cells.

        Please see GetSelectedCells() for more information about the selection
        representation in wxGrid.

        @see GetSelectionBlockTopLeft()
    */
    wxGridCellCoordsArray GetSelectionBlockBottomRight() const;

    /**
        Returns an array of the top left corners of blocks of selected cells.

        Please see GetSelectedCells() for more information about the selection
        representation in wxGrid.

        @see GetSelectionBlockBottomRight()
    */
    wxGridCellCoordsArray GetSelectionBlockTopLeft() const;

    /**
        Returns the colour used for drawing the selection foreground.
    */
    wxColour GetSelectionForeground() const;

    /**
        Returns the current selection mode.

        @see SetSelectionMode().
    */
    wxGridSelectionModes GetSelectionMode() const;

    /**
        Returns @true if the given cell is selected.
    */
    bool IsInSelection(int row, int col) const;
    /**
        Returns @true if the given cell is selected.
    */
    bool IsInSelection(const wxGridCellCoords& coords) const;

    /**
        Returns @true if there are currently any selected cells, rows, columns
        or blocks.
    */
    bool IsSelection() const;

    /**
        Selects all cells in the grid.
    */
    void SelectAll();

    /**
        Selects a rectangular block of cells.

        If @a addToSelected is @false then any existing selection will be
        deselected; if @true the column will be added to the existing
        selection.
    */
    void SelectBlock(int topRow, int leftCol, int bottomRow, int rightCol,
                     bool addToSelected = false);
    /**
        Selects a rectangular block of cells.

        If @a addToSelected is @false then any existing selection will be
        deselected; if @true the column will be added to the existing
        selection.
    */
    void SelectBlock(const wxGridCellCoords& topLeft,
                     const wxGridCellCoords& bottomRight,
                     bool addToSelected = false);

    /**
        Selects the specified column.

        If @a addToSelected is @false then any existing selection will be
        deselected; if @true the column will be added to the existing
        selection.

        This method won't select anything if the current selection mode is
        wxGridSelectRows.
    */
    void SelectCol(int col, bool addToSelected = false);

    /**
        Selects the specified row.

        If @a addToSelected is @false then any existing selection will be
        deselected; if @true the row will be added to the existing selection.

        This method won't select anything if the current selection mode is
        wxGridSelectColumns.
    */
    void SelectRow(int row, bool addToSelected = false);

    /**
        Set the colour to be used for drawing the selection background.
    */
    void SetSelectionBackground(const wxColour& c);

    /**
        Set the colour to be used for drawing the selection foreground.
    */
    void SetSelectionForeground(const wxColour& c);

    /**
        Set the selection behaviour of the grid.

        The existing selection is converted to conform to the new mode if
        possible and discarded otherwise (e.g. any individual selected cells
        are deselected if the new mode allows only the selection of the entire
        rows or columns).
    */
    void SetSelectionMode(wxGridSelectionModes selmode);

    //@}


    /**
        @name Scrolling
     */
    //@{

    /**
        Returns the number of pixels per horizontal scroll increment.

        The default is 15.

        @see GetScrollLineY(), SetScrollLineX(), SetScrollLineY()
    */
    int GetScrollLineX() const;

    /**
        Returns the number of pixels per vertical scroll increment.

        The default is 15.

        @see GetScrollLineX(), SetScrollLineX(), SetScrollLineY()
    */
    int GetScrollLineY() const;

    /**
        Returns @true if a cell is either entirely or at least partially
        visible in the grid window.

        By default, the cell must be entirely visible for this function to
        return @true but if @a wholeCellVisible is @false, the function returns
        @true even if the cell is only partially visible.
    */
    bool IsVisible(int row, int col, bool wholeCellVisible = true) const;
    /**
        Returns @true if a cell is either entirely or at least partially
        visible in the grid window.

        By default, the cell must be entirely visible for this function to
        return @true but if @a wholeCellVisible is @false, the function returns
        @true even if the cell is only partially visible.
    */
    bool IsVisible(const wxGridCellCoords& coords,
                   bool wholeCellVisible = true) const;

    /**
        Brings the specified cell into the visible grid cell area with minimal
        scrolling.

        Does nothing if the cell is already visible.
    */
    void MakeCellVisible(int row, int col);
    /**
        Brings the specified cell into the visible grid cell area with minimal
        scrolling.

        Does nothing if the cell is already visible.
    */
    void MakeCellVisible(const wxGridCellCoords& coords);

    /**
        Sets the number of pixels per horizontal scroll increment.

        The default is 15.

        @see GetScrollLineX(), GetScrollLineY(), SetScrollLineY()
    */
    void SetScrollLineX(int x);

    /**
        Sets the number of pixels per vertical scroll increment.

        The default is 15.

        @see GetScrollLineX(), GetScrollLineY(), SetScrollLineX()
    */
    void SetScrollLineY(int y);

    //@}


    /**
        @name Cell and Device Coordinate Translation
     */
    //@{

    /**
        Convert grid cell coordinates to grid window pixel coordinates.

        This function returns the rectangle that encloses the block of cells
        limited by @a topLeft and @a bottomRight cell in device coords and
        clipped to the client size of the grid window.

        @see CellToRect()
    */
    wxRect BlockToDeviceRect(const wxGridCellCoords& topLeft,
                             const wxGridCellCoords& bottomRight) const;

    /**
        Return the rectangle corresponding to the grid cell's size and position
        in logical coordinates.

        @see BlockToDeviceRect()
    */
    wxRect CellToRect(int row, int col) const;
    /**
        Return the rectangle corresponding to the grid cell's size and position
        in logical coordinates.

        @see BlockToDeviceRect()
    */
    wxRect CellToRect(const wxGridCellCoords& coords) const;

    /**
        Returns the column at the given pixel position.

        @param x
            The x position to evaluate.
        @param clipToMinMax
            If @true, rather than returning @c wxNOT_FOUND, it returns either
            the first or last column depending on whether @a x is too far to
            the left or right respectively.
        @return
            The column index or @c wxNOT_FOUND.
    */
    int XToCol(int x, bool clipToMinMax = false) const;

    /**
        Returns the column whose right hand edge is close to the given logical
        @a x position.

        If no column edge is near to this position @c wxNOT_FOUND is returned.
    */
    int XToEdgeOfCol(int x) const;

    /**
        Translates logical pixel coordinates to the grid cell coordinates.

        Notice that this function expects logical coordinates on input so if
        you use this function in a mouse event handler you need to translate
        the mouse position, which is expressed in device coordinates, to
        logical ones.

        @see XToCol(), YToRow()
     */
    wxGridCellCoords XYToCell(int x, int y) const;
    /**
        Translates logical pixel coordinates to the grid cell coordinates.

        Notice that this function expects logical coordinates on input so if
        you use this function in a mouse event handler you need to translate
        the mouse position, which is expressed in device coordinates, to
        logical ones.

        @see XToCol(), YToRow()
     */
    wxGridCellCoords XYToCell(const wxPoint& pos) const;
    // XYToCell(int, int, wxGridCellCoords&) overload is intentionally
    // undocumented, using it is ugly and non-const reference parameters are
    // not used in wxWidgets API

    /**
        Returns the row whose bottom edge is close to the given logical @a y
        position.

        If no row edge is near to this position @c wxNOT_FOUND is returned.
    */
    int YToEdgeOfRow(int y) const;

    /**
        Returns the grid row that corresponds to the logical @a y coordinate.

        Returns @c wxNOT_FOUND if there is no row at the @a y position.
    */
    int YToRow(int y, bool clipToMinMax = false) const;

    //@}


    /**
        @name Miscellaneous Functions
     */
    //@{

    /**
        Appends one or more new columns to the right of the grid.

        The @a updateLabels argument is not used at present. If you are using a
        derived grid table class you will need to override
        wxGridTableBase::AppendCols(). See InsertCols() for further
        information.

        @return @true on success or @false if appending columns failed.
    */
    bool AppendCols(int numCols = 1, bool updateLabels = true);

    /**
        Appends one or more new rows to the bottom of the grid.

        The @a updateLabels argument is not used at present. If you are using a
        derived grid table class you will need to override
        wxGridTableBase::AppendRows(). See InsertRows() for further
        information.

        @return @true on success or @false if appending rows failed.
    */
    bool AppendRows(int numRows = 1, bool updateLabels = true);

    /**
        Return @true if the horizontal grid lines stop at the last column
        boundary or @false if they continue to the end of the window.

        The default is to clip grid lines.

        @see ClipHorzGridLines(), AreVertGridLinesClipped()
     */
    bool AreHorzGridLinesClipped() const;

    /**
        Return @true if the vertical grid lines stop at the last row
        boundary or @false if they continue to the end of the window.

        The default is to clip grid lines.

        @see ClipVertGridLines(), AreHorzGridLinesClipped()
     */
    bool AreVertGridLinesClipped() const;

    /**
        Increments the grid's batch count.

        When the count is greater than zero repainting of the grid is
        suppressed. Each call to BeginBatch must be matched by a later call to
        EndBatch(). Code that does a lot of grid modification can be enclosed
        between BeginBatch() and EndBatch() calls to avoid screen flicker. The
        final EndBatch() call will cause the grid to be repainted.

        Notice that you should use wxGridUpdateLocker which ensures that there
        is always a matching EndBatch() call for this BeginBatch() if possible
        instead of calling this method directly.
    */
    void BeginBatch();

    /**
        Clears all data in the underlying grid table and repaints the grid.

        The table is not deleted by this function. If you are using a derived
        table class then you need to override wxGridTableBase::Clear() for this
        function to have any effect.
    */
    void ClearGrid();

    /**
        Change whether the horizontal grid lines are clipped by the end of the
        last column.

        By default the grid lines are not drawn beyond the end of the last
        column but after calling this function with @a clip set to @false they
        will be drawn across the entire grid window.

        @see AreHorzGridLinesClipped(), ClipVertGridLines()
     */
    void ClipHorzGridLines(bool clip);

    /**
        Change whether the vertical grid lines are clipped by the end of the
        last row.

        By default the grid lines are not drawn beyond the end of the last
        row but after calling this function with @a clip set to @false they
        will be drawn across the entire grid window.

        @see AreVertGridLinesClipped(), ClipHorzGridLines()
     */
    void ClipVertGridLines(bool clip);

    /**
        Deletes one or more columns from a grid starting at the specified
        position.

        The @a updateLabels argument is not used at present. If you are using a
        derived grid table class you will need to override
        wxGridTableBase::DeleteCols(). See InsertCols() for further
        information.

        @return @true on success or @false if deleting columns failed.
    */
    bool DeleteCols(int pos = 0, int numCols = 1, bool updateLabels = true);

    /**
        Deletes one or more rows from a grid starting at the specified
        position.

        The @a updateLabels argument is not used at present. If you are using a
        derived grid table class you will need to override
        wxGridTableBase::DeleteRows(). See InsertRows() for further
        information.

        @return @true on success or @false if appending rows failed.
    */
    bool DeleteRows(int pos = 0, int numRows = 1, bool updateLabels = true);

    /**
        Decrements the grid's batch count.

        When the count is greater than zero repainting of the grid is
        suppressed. Each previous call to BeginBatch() must be matched by a
        later call to EndBatch(). Code that does a lot of grid modification can
        be enclosed between BeginBatch() and EndBatch() calls to avoid screen
        flicker. The final EndBatch() will cause the grid to be repainted.

        @see wxGridUpdateLocker
    */
    void EndBatch();

    /**
        Overridden wxWindow method.
    */
    virtual void Fit();

    /**
        Causes immediate repainting of the grid.

        Use this instead of the usual wxWindow::Refresh().
    */
    void ForceRefresh();

    /**
        Returns the number of times that BeginBatch() has been called without
        (yet) matching calls to EndBatch(). While the grid's batch count is
        greater than zero the display will not be updated.
    */
    int GetBatchCount();

    /**
        Returns the total number of grid columns.

        This is the same as the number of columns in the underlying grid table.
    */
    int GetNumberCols() const;

    /**
        Returns the total number of grid rows.

        This is the same as the number of rows in the underlying grid table.
    */
    int GetNumberRows() const;

    /**
        Returns the attribute for the given cell creating one if necessary.

        If the cell already has an attribute, it is returned. Otherwise a new
        attribute is created, associated with the cell and returned. In any
        case the caller must call DecRef() on the returned pointer.

        This function may only be called if CanHaveAttributes() returns @true.
    */
    wxGridCellAttr *GetOrCreateCellAttr(int row, int col) const;

    /**
        Returns a base pointer to the current table object.

        The returned pointer is still owned by the grid.
    */
    wxGridTableBase *GetTable() const;

    /**
        Inserts one or more new columns into a grid with the first new column
        at the specified position.

        Notice that inserting the columns in the grid requires grid table
        cooperation: when this method is called, grid object begins by
        requesting the underlying grid table to insert new columns. If this is
        successful the table notifies the grid and the grid updates the
        display. For a default grid (one where you have called CreateGrid())
        this process is automatic. If you are using a custom grid table
        (specified with SetTable()) then you must override
        wxGridTableBase::InsertCols() in your derived table class.

        @param pos
            The position which the first newly inserted column will have.
        @param numCols
            The number of columns to insert.
        @param updateLabels
            Currently not used.
        @return
            @true if the columns were successfully inserted, @false if an error
            occurred (most likely the table couldn't be updated).
    */
    bool InsertCols(int pos = 0, int numCols = 1, bool updateLabels = true);

    /**
        Inserts one or more new rows into a grid with the first new row at the
        specified position.

        Notice that you must implement wxGridTableBase::InsertRows() if you use
        a grid with a custom table, please see InsertCols() for more
        information.

        @param pos
            The position which the first newly inserted row will have.
        @param numRows
            The number of rows to insert.
        @param updateLabels
            Currently not used.
        @return
            @true if the rows were successfully inserted, @false if an error
            occurred (most likely the table couldn't be updated).
    */
    bool InsertRows(int pos = 0, int numRows = 1, bool updateLabels = true);

    /**
        Invalidates the cached attribute for the given cell.

        For efficiency reasons, wxGrid may cache the recently used attributes
        (currently it caches only the single most recently used one, in fact)
        which can result in the cell appearance not being refreshed even when
        the attribute returned by your custom wxGridCellAttrProvider-derived
        class has changed. To force the grid to refresh the cell attribute,
        this function may be used. Notice that calling it will not result in
        actually redrawing the cell, you still need to call
        wxWindow::RefreshRect() to invalidate the area occupied by the cell in
        the window to do this. Also note that you don't need to call this
        function if you store the attributes in wxGrid itself, i.e. use its
        SetAttr() and similar methods, it is only useful when using a separate
        custom attributes provider.

        @param row
            The row of the cell whose attribute needs to be queried again.
        @param col
            The column of the cell whose attribute needs to be queried again.

        @since 2.9.2
     */
    void RefreshAttr(int row, int col);

    /**
        Sets the cell attributes for all cells in the specified column.

        For more information about controlling grid cell attributes see the
        wxGridCellAttr cell attribute class and the @ref overview_grid.
    */
    void SetColAttr(int col, wxGridCellAttr* attr);

    /**
        Sets the extra margins used around the grid area.

        A grid may occupy more space than needed for its data display and
        this function allows to set how big this extra space is
    */
    void SetMargins(int extraWidth, int extraHeight);

    /**
        Sets the cell attributes for all cells in the specified row.

        The grid takes ownership of the attribute pointer.

        See the wxGridCellAttr class for more information about controlling
        cell attributes.
    */
    void SetRowAttr(int row, wxGridCellAttr* attr);

    //@}


    /**
        @name Sorting support.

        wxGrid doesn't provide any support for sorting the data but it does
        generate events allowing the user code to sort it and supports
        displaying the sort indicator in the column used for sorting.

        To use wxGrid sorting support you need to handle wxEVT_GRID_COL_SORT
        event (and not veto it) and resort the data displayed in the grid. The
        grid will automatically update the sorting indicator on the column
        which was clicked.

        You can also call the functions in this section directly to update the
        sorting indicator. Once again, they don't do anything with the grid
        data, it remains your responsibility to actually sort it appropriately.
     */
    //@{

    /**
        Return the column in which the sorting indicator is currently
        displayed.

        Returns @c wxNOT_FOUND if sorting indicator is not currently displayed
        at all.

        @see SetSortingColumn()
     */
    int GetSortingColumn() const;

    /**
        Return @true if this column is currently used for sorting.

        @see GetSortingColumn()
     */
    bool IsSortingBy(int col) const;

    /**
        Return @true if the current sorting order is ascending or @false if it
        is descending.

        It only makes sense to call this function if GetSortingColumn() returns
        a valid column index and not @c wxNOT_FOUND.

        @see SetSortingColumn()
     */
    bool IsSortOrderAscending() const;

    /**
        Set the column to display the sorting indicator in and its direction.

        @param col
            The column to display the sorting indicator in or @c wxNOT_FOUND to
            remove any currently displayed sorting indicator.
        @param ascending
            If @true, display the ascending sort indicator, otherwise display
            the descending sort indicator.

        @see GetSortingColumn(), IsSortOrderAscending()
     */
    void SetSortingColumn(int col, bool ascending = true);

    /**
        Remove any currently shown sorting indicator.

        This is equivalent to calling SetSortingColumn() with @c wxNOT_FOUND
        first argument.
     */
    void UnsetSortingColumn();
    //@}


    /**
        @name Accessors for component windows.

        Return the various child windows of wxGrid.

        wxGrid is an empty parent window for 4 children representing the column
        labels window (top), the row labels window (left), the corner window
        (top left) and the main grid window. It may be necessary to use these
        individual windows and not the wxGrid window itself if you need to
        handle events for them (this can be done using wxEvtHandler::Connect()
        or wxWindow::PushEventHandler()) or do something else requiring the use
        of the correct window pointer. Notice that you should not, however,
        change these windows (e.g. reposition them or draw over them) because
        they are managed by wxGrid itself.
     */
    //@{

    /**
        Return the main grid window containing the grid cells.

        This window is always shown.
     */
    wxWindow *GetGridWindow() const;

    /**
        Return the row labels window.

        This window is not shown if the row labels were hidden using
        HideRowLabels().
     */
    wxWindow *GetGridRowLabelWindow() const;

    /**
        Return the column labels window.

        This window is not shown if the columns labels were hidden using
        HideColLabels().

        Depending on whether UseNativeColHeader() was called or not this can be
        either a wxHeaderCtrl or a plain wxWindow.  This function returns a valid
        window pointer in either case but in the former case you can also use
        GetGridColHeader() to access it if you need wxHeaderCtrl-specific
        functionality.
     */
    wxWindow *GetGridColLabelWindow() const;

    /**
        Return the window in the top left grid corner.

        This window is shown only of both columns and row labels are shown and
        normally doesn't contain anything. Clicking on it is handled by wxGrid
        however and can be used to select the entire grid.
     */
    wxWindow *GetGridCornerLabelWindow() const;

    /**
        Return the header control used for column labels display.

        This function can only be called if UseNativeColHeader() had been
        called.
     */
    wxHeaderCtrl *GetGridColHeader() const;

    //@}

protected:
    /**
        Returns @true if this grid has support for cell attributes.

        The grid supports attributes if it has the associated table which, in
        turn, has attributes support, i.e. wxGridTableBase::CanHaveAttributes()
        returns @true.
    */
    bool CanHaveAttributes() const;

    /**
        Get the minimal width of the given column/row.

        The value returned by this function may be different than that returned
        by GetColMinimalAcceptableWidth() if SetColMinimalWidth() had been
        called for this column.
    */
    int GetColMinimalWidth(int col) const;

    /**
        Returns the coordinate of the right border specified column.
    */
    int GetColRight(int col) const;

    /**
        Returns the coordinate of the left border specified column.
    */
    int GetColLeft(int col) const;

    /**
        Returns the minimal size for the given column.

        The value returned by this function may be different than that returned
        by GetRowMinimalAcceptableHeight() if SetRowMinimalHeight() had been
        called for this row.
    */
    int GetRowMinimalHeight(int col) const;
};



/**
    @class wxGridUpdateLocker

    This small class can be used to prevent wxGrid from redrawing during its
    lifetime by calling wxGrid::BeginBatch() in its constructor and
    wxGrid::EndBatch() in its destructor. It is typically used in a function
    performing several operations with a grid which would otherwise result in
    flicker. For example:

    @code
    void MyFrame::Foo()
    {
        m_grid = new wxGrid(this, ...);

        wxGridUpdateLocker noUpdates(m_grid);
        m_grid-AppendColumn();
        // ... many other operations with m_grid ...
        m_grid-AppendRow();

        // destructor called, grid refreshed
    }
    @endcode

    Using this class is easier and safer than calling wxGrid::BeginBatch() and
    wxGrid::EndBatch() because you don't risk missing the call the latter (due
    to an exception for example).

    @library{wxadv}
    @category{grid}
*/
class wxGridUpdateLocker
{
public:
    /**
        Creates an object preventing the updates of the specified @a grid. The
        parameter could be @NULL in which case nothing is done. If @a grid is
        non-@NULL then the grid must exist for longer than this
        wxGridUpdateLocker object itself.

        The default constructor could be followed by a call to Create() to set
        the grid object later.
    */
    wxGridUpdateLocker(wxGrid* grid = NULL);

    /**
        Destructor reenables updates for the grid this object is associated
        with.
    */
    ~wxGridUpdateLocker();

    /**
        This method can be called if the object had been constructed using the
        default constructor. It must not be called more than once.
    */
    void Create(wxGrid* grid);
};



/**
    @class wxGridEvent

    This event class contains information about various grid events.

    Notice that all grid event table macros are available in two versions:
    @c EVT_GRID_XXX and @c EVT_GRID_CMD_XXX. The only difference between the
    two is that the former doesn't allow to specify the grid window identifier
    and so takes a single parameter, the event handler, but is not suitable if
    there is more than one grid control in the window where the event table is
    used (as it would catch the events from all the grids). The version with @c
    CMD takes the id as first argument and the event handler as the second one
    and so can be used with multiple grids as well. Otherwise there are no
    difference between the two and only the versions without the id are
    documented below for brevity.

    @beginEventTable{wxGridEvent}
    @event{EVT_GRID_CELL_CHANGING(func)}
        The user is about to change the data in a cell. The new cell value as
        string is available from GetString() event object method. This event
        can be vetoed if the change is not allowed.
        Processes a @c wxEVT_GRID_CELL_CHANGING event type.
    @event{EVT_GRID_CELL_CHANGED(func)}
        The user changed the data in a cell. The old cell value as string is
        available from GetString() event object method. Notice that vetoing
        this event still works for backwards compatibility reasons but any new
        code should only veto EVT_GRID_CELL_CHANGING event and not this one.
        Processes a @c wxEVT_GRID_CELL_CHANGED event type.
    @event{EVT_GRID_CELL_LEFT_CLICK(func)}
        The user clicked a cell with the left mouse button. Processes a
        @c wxEVT_GRID_CELL_LEFT_CLICK event type.
    @event{EVT_GRID_CELL_LEFT_DCLICK(func)}
        The user double-clicked a cell with the left mouse button. Processes a
        @c wxEVT_GRID_CELL_LEFT_DCLICK event type.
    @event{EVT_GRID_CELL_RIGHT_CLICK(func)}
        The user clicked a cell with the right mouse button. Processes a
        @c wxEVT_GRID_CELL_RIGHT_CLICK event type.
    @event{EVT_GRID_CELL_RIGHT_DCLICK(func)}
        The user double-clicked a cell with the right mouse button. Processes a
        @c wxEVT_GRID_CELL_RIGHT_DCLICK event type.
    @event{EVT_GRID_EDITOR_HIDDEN(func)}
        The editor for a cell was hidden. Processes a
        @c wxEVT_GRID_EDITOR_HIDDEN event type.
    @event{EVT_GRID_EDITOR_SHOWN(func)}
        The editor for a cell was shown. Processes a
        @c wxEVT_GRID_EDITOR_SHOWN event type.
    @event{EVT_GRID_LABEL_LEFT_CLICK(func)}
        The user clicked a label with the left mouse button. Processes a
        @c wxEVT_GRID_LABEL_LEFT_CLICK event type.
    @event{EVT_GRID_LABEL_LEFT_DCLICK(func)}
        The user double-clicked a label with the left mouse button. Processes a
        @c wxEVT_GRID_LABEL_LEFT_DCLICK event type.
    @event{EVT_GRID_LABEL_RIGHT_CLICK(func)}
        The user clicked a label with the right mouse button. Processes a
        @c wxEVT_GRID_LABEL_RIGHT_CLICK event type.
    @event{EVT_GRID_LABEL_RIGHT_DCLICK(func)}
        The user double-clicked a label with the right mouse button. Processes
        a @c wxEVT_GRID_LABEL_RIGHT_DCLICK event type.
    @event{EVT_GRID_SELECT_CELL(func)}
        The given cell was made current, either by user or by the program via a
        call to SetGridCursor() or GoToCell(). Processes a
        @c wxEVT_GRID_SELECT_CELL event type.
    @event{EVT_GRID_COL_MOVE(func)}
        The user tries to change the order of the columns in the grid by
        dragging the column specified by GetCol(). This event can be vetoed to
        either prevent the user from reordering the column change completely
        (but notice that if you don't want to allow it at all, you simply
        shouldn't call wxGrid::EnableDragColMove() in the first place), vetoed
        but handled in some way in the handler, e.g. by really moving the
        column to the new position at the associated table level, or allowed to
        proceed in which case wxGrid::SetColPos() is used to reorder the
        columns display order without affecting the use of the column indices
        otherwise.
        This event macro corresponds to @c wxEVT_GRID_COL_MOVE event type.
    @event{EVT_GRID_COL_SORT(func)}
        This event is generated when a column is clicked by the user and its
        name is explained by the fact that the custom reaction to a click on a
        column is to sort the grid contents by this column. However the grid
        itself has no special support for sorting and it's up to the handler of
        this event to update the associated table. But if the event is handled
        (and not vetoed) the grid supposes that the table was indeed resorted
        and updates the column to indicate the new sort order and refreshes
        itself.
        This event macro corresponds to @c wxEVT_GRID_COL_SORT event type.
    @endEventTable

    @library{wxadv}
    @category{grid,events}
*/
class wxGridEvent : public wxNotifyEvent
{
public:
    /**
        Default constructor.
    */
    wxGridEvent();
    /**
        Constructor for initializing all event attributes.
    */
    wxGridEvent(int id, wxEventType type, wxObject* obj,
                int row = -1, int col = -1, int x = -1, int y = -1,
                bool sel = true, const wxKeyboardState& kbd = wxKeyboardState());

    /**
        Returns @true if the Alt key was down at the time of the event.
    */
    bool AltDown() const;

    /**
        Returns @true if the Control key was down at the time of the event.
    */
    bool ControlDown() const;

    /**
        Column at which the event occurred.

        Notice that for a @c wxEVT_GRID_SELECT_CELL event this column is the
        column of the newly selected cell while the previously selected cell
        can be retrieved using wxGrid::GetGridCursorCol().
    */
    virtual int GetCol();

    /**
        Position in pixels at which the event occurred.
    */
    wxPoint GetPosition();

    /**
        Row at which the event occurred.

        Notice that for a @c wxEVT_GRID_SELECT_CELL event this row is the row
        of the newly selected cell while the previously selected cell can be
        retrieved using wxGrid::GetGridCursorRow().
    */
    virtual int GetRow();

    /**
        Returns @true if the Meta key was down at the time of the event.
    */
    bool MetaDown() const;

    /**
        Returns @true if the user is selecting grid cells, or @false if
        deselecting.
    */
    bool Selecting();

    /**
        Returns @true if the Shift key was down at the time of the event.
    */
    bool ShiftDown() const;
};



/**
    @class wxGridSizeEvent

    This event class contains information about a row/column resize event.

    @beginEventTable{wxGridSizeEvent}
    @event{EVT_GRID_CMD_COL_SIZE(id, func)}
        The user resized a column, corresponds to @c wxEVT_GRID_COL_SIZE event
        type.
    @event{EVT_GRID_CMD_ROW_SIZE(id, func)}
        The user resized a row, corresponds to @c wxEVT_GRID_ROW_SIZE event
        type.
    @event{EVT_GRID_COL_SIZE(func)}
        Same as EVT_GRID_CMD_COL_SIZE() but uses `wxID_ANY` id.
    @event{EVT_GRID_ROW_SIZE(func)}
        Same as EVT_GRID_CMD_ROW_SIZE() but uses `wxID_ANY` id.
    @endEventTable

    @library{wxadv}
    @category{grid,events}
*/
class wxGridSizeEvent : public wxNotifyEvent
{
public:
    /**
        Default constructor.
    */
    wxGridSizeEvent();
    /**
        Constructor for initializing all event attributes.
    */
    wxGridSizeEvent(int id, wxEventType type, wxObject* obj,
                    int rowOrCol = -1, int x = -1, int y = -1,
                    const wxKeyboardState& kbd = wxKeyboardState());

    /**
        Returns @true if the Alt key was down at the time of the event.
    */
    bool AltDown() const;

    /**
        Returns @true if the Control key was down at the time of the event.
    */
    bool ControlDown() const;

    /**
        Position in pixels at which the event occurred.
    */
    wxPoint GetPosition();

    /**
        Row or column at that was resized.
    */
    int GetRowOrCol();

    /**
        Returns @true if the Meta key was down at the time of the event.
    */
    bool MetaDown() const;

    /**
        Returns @true if the Shift key was down at the time of the event.
    */
    bool ShiftDown() const;
};



/**
    @class wxGridRangeSelectEvent

    @beginEventTable{wxGridRangeSelectEvent}
    @event{EVT_GRID_RANGE_SELECT(func)}
        The user selected a group of contiguous cells. Processes a
        @c wxEVT_GRID_RANGE_SELECT event type.
    @event{EVT_GRID_CMD_RANGE_SELECT(id, func)}
        The user selected a group of contiguous cells; variant taking a window
        identifier. Processes a @c wxEVT_GRID_RANGE_SELECT event type.
    @endEventTable

    @library{wxadv}
    @category{grid,events}
*/
class wxGridRangeSelectEvent : public wxNotifyEvent
{
public:
    /**
        Default constructor.
    */
    wxGridRangeSelectEvent();
    /**
        Constructor for initializing all event attributes.
    */
    wxGridRangeSelectEvent(int id, wxEventType type,
                           wxObject* obj,
                           const wxGridCellCoords& topLeft,
                           const wxGridCellCoords& bottomRight,
                           bool sel = true, const wxKeyboardState& kbd = wxKeyboardState());

    /**
        Returns @true if the Alt key was down at the time of the event.
    */
    bool AltDown() const;

    /**
        Returns @true if the Control key was down at the time of the event.
    */
    bool ControlDown() const;

    /**
        Top left corner of the rectangular area that was (de)selected.
    */
    wxGridCellCoords GetBottomRightCoords();

    /**
        Bottom row of the rectangular area that was (de)selected.
    */
    int GetBottomRow();

    /**
        Left column of the rectangular area that was (de)selected.
    */
    int GetLeftCol();

    /**
        Right column of the rectangular area that was (de)selected.
    */
    int GetRightCol();

    /**
        Top left corner of the rectangular area that was (de)selected.
    */
    wxGridCellCoords GetTopLeftCoords();

    /**
        Top row of the rectangular area that was (de)selected.
    */
    int GetTopRow();

    /**
        Returns @true if the Meta key was down at the time of the event.
    */
    bool MetaDown() const;

    /**
        Returns @true if the area was selected, @false otherwise.
    */
    bool Selecting();

    /**
        Returns @true if the Shift key was down at the time of the event.
    */
    bool ShiftDown() const;
};



/**
    @class wxGridEditorCreatedEvent

    @beginEventTable{wxGridEditorCreatedEvent}
    @event{EVT_GRID_EDITOR_CREATED(func)}
        The editor for a cell was created. Processes a
        @c wxEVT_GRID_EDITOR_CREATED event type.
    @event{EVT_GRID_CMD_EDITOR_CREATED(id, func)}
        The editor for a cell was created; variant taking a window identifier.
        Processes a @c wxEVT_GRID_EDITOR_CREATED event type.
    @endEventTable

    @library{wxadv}
    @category{grid,events}
*/
class wxGridEditorCreatedEvent : public wxCommandEvent
{
public:
    /**
        Default constructor.
    */
    wxGridEditorCreatedEvent();
    /**
        Constructor for initializing all event attributes.
    */
    wxGridEditorCreatedEvent(int id, wxEventType type, wxObject* obj,
                             int row, int col, wxControl* ctrl);

    /**
        Returns the column at which the event occurred.
    */
    int GetCol();

    /**
        Returns the edit control.
    */
    wxControl* GetControl();

    /**
        Returns the row at which the event occurred.
    */
    int GetRow();

    /**
        Sets the column at which the event occurred.
    */
    void SetCol(int col);

    /**
        Sets the edit control.
    */
    void SetControl(wxControl* ctrl);

    /**
        Sets the row at which the event occurred.
    */
    void SetRow(int row);
};

