My Borland docs for InvalidateRect say:
lpRect: LPRECT type. Points to a RECT data structure that contains the rectangle (in client coordinates) to be added to the update region. If the lpRect parameter is NULL, the entire client area is added to the region.
(Sorry about this Blitz people, bear with us while we ex-C people chunner on.)
lpRect: LPRECT type. Points to a RECT data structure that contains the rectangle (in client coordinates) to be added to the update region. If the lpRect parameter is NULL, the entire client area is added to the region.
(Sorry about this Blitz people, bear with us while we ex-C people chunner on.)