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Indicates whether the drop-down list has been displayed.
Source position: stdctrls.pp line 419
public property TCustomComboBox.DroppedDown : Boolean |
DroppedDown is a Boolean property which indicates whether the drop-down list for the control has been displayed.
Reading the value for the property causes the widgetset class to be queried when a handle has been allocated for the control. Otherwise, the stored value for the property is used.
Setting a new value for the property causes the widgetset class to be notified of the changed property value. No actions are performed if a handle has not been allocated for the control, or during LCL component streaming. Setting this property opens or closes the drop-down list.
The value in DroppedDown is maintained when the Style for the control is altered, when CBN_DROPDOWN or CBN_CLOSEUP control messages are handled, and when key down events are handled which change the visibility of the drop-down list.
| Remark: | For the macOS Carbon widgetset, setting DroppedDown to True does not cause the drop-down list to be displayed when Style is set to csDropDownList. |
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Controls the appearance and behavior for the combo-box. |
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Filters keys used to traverse the list. |
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The display style available for combo-box controls. |
| Version 3.2 | Generated 2024-02-25 | Home |