The SubtractRect function obtains the coordinates of a rectangle determined by subtracting one rectangle from another.
BOOL SubtractRect(
LPRECT lprcDst, |
// pointer to destination rectangle |
CONST RECT *lprcSrc1, |
// pointer to rectangle to subtract from |
CONST RECT *lprcSrc2 |
// pointer to rectangle to subtract |
); |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The function only subtracts the rectangle specified by lprcSrc2 from the rectangle specified by lprcSrc1 when the rectangles intersect completely in either the x- or y-direction. For example, if *lprcSrc1 has the coordinates (10,10,100,100) and *lprcSrc2 has the coordinates (50,50,150,150), the function sets the coordinates of the rectangle pointed to by lprcDst to (10,10,100,100). If *lprcSrc1 has the coordinates (10,10,100,100) and *lprcSrc2 has the coordinates (50,10,150,150), however, the function sets the coordinates of the rectangle pointed to by lprcDst to (10,10,50,100).
IntersectRect, RECT, UnionRect
file: /Techref/os/win/api/win32/func/src/f87_10.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/12/13 03:33,
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