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Reference for unit 'Controls' (#lcl)

TDragManager.DragStart

Starts dragging.

Declaration

Source position: controls.pp line 484

public procedure TDragManager.DragStart(

AControl: TControl;

AImmediate: Boolean;

AThreshold: Integer

); virtual; abstract;

A DragObject must be created, depending on the Control.DragKind. The mouse has to be captured, and visual feedback must be initialized.