[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'InterfaceBase' (#lcl)

TWidgetSet.InvalidateRgn

Marks a display area for repaint.

Declaration

Source position: winapih.inc line 175

public function TWidgetSet.InvalidateRgn(

  Handle: HWND;

  Rgn: HRGN;

  Erase: Boolean

):Boolean; virtual;

Arguments

Handle

  

The window handle.

Rgn

  

The region to repaint.

Erase

  

True forces a repaint of the background, before further painting.

Function result

False on failure.

See also

TWidgetSet.InvalidateRect

  

Marks a display area for repaint.
Version 4.0 Generated 2025-05-03 Home