Vcl.DBLookup.TDBLookupCombo.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 | published | Vcl.DbLookup.pas Vcl.DBLookup.hpp |
Vcl.DBLookup | TDBLookupCombo |
Description
Occurs immediately before the lookup combo list is opened.
Write an OnDropDown event handler to take specific action before the lookup combo list is displayed to the user. The list can be opened by the user or by calling the DropDown method.
procedure TForm1.DBLookupCombo1DropDown(Sender: TObject);
begin
Label1.Caption := 'Some text';
end;