C
void InvalidateRectangle( WORD left, WORD top, WORD right, WORD bottom );
Overview
Invalidates the specified rectangular area. This increments the number of invalidated areas and if the number of invalidated areas exceed the GFX_MAX_INVALIDATE_AREAS, the whole frame buffer is invalidated.
Input Parameters
|
Input Parameters |
Description |
|
WORD left |
left position |
|
WORD top |
top position |
|
WORD right |
right position |
|
WORD bottom |
bottom position |
Returns
None
Preconditions
None
Side Effects
Copies back the invalidated areas only to the draw buffer after the exchange of draw and frame buffers.