[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'StdCtrls' (#lcl)

TCustomComboBox.DropDown

Signals the OnDropDown event handler.

Declaration

Source position: stdctrls.pp line 359

protected procedure TCustomComboBox.DropDown; virtual;

Description

DropDown is a procedure called whenever the drop-down list is displayed. DropDown is called when a CN_Command message with a CBN_DROPDOWN notification code is handled for the control. DropDown signals the OnDropDown event handler (when assigned).

Use DroppedDown to determine if the drop-down list has been displayed.

See also

TCustomComboBox.CloseUp

  

Called when the drop-down list is closed.

TCustomComboBox.DroppedDown

  

Indicates whether the drop-down list has been displayed.

TCustomComboBox.OnDropDown

  

Handler invoked when the list has dropped down.


Version 3.2 Generated 2024-02-25 Home