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RectWinToScr |
Function (ROM Call 0x2A) |
Converts relative to absolute coordinates then clips them to a window.
RectWinToScr first converts coordinates in the structure rect (which are assumed to be relative
to the topleft corner of the structure win_area) to the absolute screen coordinates.
Converted rectangular area is then clipped at the boundaries of the rectangular area
win_area, and coordinates of resulting rectangular area are stored to the structure
pointed to by result_area. RectWinToScr returns result_area. If converted
rectangular area does not overlap with win_area, result_area will be
undefined, and RectWinToScr returns NULL.
Used by: WinFill, Dialog