Vcl.ActnMan.TCustomActionControl.DoStartDrag
Delphi
procedure DoStartDrag(var DragObject: TDragObject); override;
C++
DYNAMIC void __fastcall DoStartDrag(Vcl::Controls::TDragObject* &DragObject);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
procedure function |
protected | Vcl.ActnMan.pas Vcl.ActnMan.hpp |
Vcl.ActnMan | TCustomActionControl |
Description
Is an OnStartDrag event dispatcher.
Vcl.ActnMan.TCustomActionControl.DoStartDrag inherits from Vcl.Controls.TControl.DoStartDrag. All content below this line refers to Vcl.Controls.TControl.DoStartDrag.
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.