RAD Studio VCL Reference
TControl.DefaultDockImage Method

Handles the painting and erasing of a dock image.

procedure DefaultDockImage(DragDockObject: TDragDockObject; Erase: Boolean); dynamic;
__fastcall DefaultDockImage(TDragDockObject DragDockObject, Boolean Erase);

The DrawDragDockImage and EraseDragDockImage methods call DefaultDockImage to paint or erase the drag image of a control while the user drags it in a drag-and-dock operation. 

DragDockObject contains the drag-and-dock information for the control. 

Erase specifies whether to draw or erase the image. 


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