Unit 'Controls' Package
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Schedules a repaint request.


Source position: controls.pp line 2349

public procedure TWinControl.Invalidate; override;


Invalidate is an overridden method in TWinControl. It re-implements the inherited method to call the Invalidate method in the widgetset class instance when its Handle has been allocated. It does not call the inherited method.

The control is redrawn when there are no pending window messages in the message queue.

See also



Causes a delayed Repaint of the control by marking its visible area of the control as invalid.

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