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TWinControl.Invalidate procedure

Member of TWinControlpublicIn unit Controls

Schedules a repaint request.

Declaration

pascal
procedure Invalidate; override

Description

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

An experiment, built from Lazarus main 2dfa93c66e of 10-22-2026. Not the official Lazarus documentation.