Responding to changes
| Chapter 12. The DropDown Widget |

## Responding to changes

You might need to react to every change of selection in the `DropDown`, for instance to update other widgets. To do so, you should connect to `property_selected().signal_changed()`. For instance:

    m_DropDown.property_selected().signal_changed().connect(
      sigc::mem_fun(*this, &ExampleWindow::on_dropdown_changed));

The selected item |  | Simple String Example