CMFCToolBarButton::GetInvalidateRect
Retrieves the region of the client area of the button that must be redrawn.
virtual const CRect GetInvalidateRect() const;
Return Value
A CRect object that specifies the region that must be redrawn.
Remarks
The default implementation of this method returns the whole client area. Override this method if you want a different area to be redrawn.
Requirements
Header: afxtoolbarbutton.h