TTMSFNCWidgetArrowBeforeDrawBkgEvent Event Type

Fires before the background is drawn, allowing the handler to suppress or replace the default background rendering.

API unit family: TMSFNCWidgetArrow

Parameters

Name	Description
Sender	Control that raises the event.
AGraphics	Graphics surface used for drawing.
ARect	Bounds of the control to draw within.
AAllow	Set to False to skip both the default background and the matching after-draw notification.
ADefaultDraw	Set to False to suppress the built-in background drawing while still raising the after-draw notification.