Vcl.StdCtrls.TCustomCombo.OnDropDown
Delphi
property OnDropDown: TNotifyEvent read FOnDropDown write FOnDropDown;
C++
__property System::Classes::TNotifyEvent OnDropDown = {read=FOnDropDown, write=FOnDropDown};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | protected | Vcl.StdCtrls.pas Vcl.StdCtrls.hpp |
Vcl.StdCtrls | TCustomCombo |
Contents
Description
Occurs when the user opens the drop-down list.
Write an OnDropDown event handler to implement special processing that needs to occur only when the drop-down list is activated.