Vcl.Controls.TControl.DoStartDrag
Delphi
procedure DoStartDrag(var DragObject: TDragObject); dynamic;
C++
DYNAMIC void __fastcall DoStartDrag(TDragObject* &DragObject);
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
procedure function |
protected | Vcl.Controls.pas Vcl.Controls.hpp |
Vcl.Controls | TControl |
Description
Is an OnStartDrag event dispatcher.
DoStartDrag calls any event handler attached to the OnStartDrag event. When creating a component that descends from TControl, override DoStartDrag to provide other responses in addition to the inherited event-handler call when the user starts a drag-and-drop operation.