This function obtains the coordinates of a rectangle determined by subtracting one rectangle from another.
At a Glance
| Header file: | Winuser.h |
| Windows CE versions: | 1.0 and later |
Syntax
BOOL SubtractRect(LPRECT lprcDst, const RECT *lprcSrc1,
const RECT *lprcSrc2);
Parameters
lprcDst
Long pointer to a RECT structure that receives the coordinates of the rectangle determined by subtracting the rectangle pointed to by lprcSrc2 from the rectangle pointed to by lprcSrc1.
lprcSrc1
Long pointer to a RECT structure from which the function subtracts the rectangle pointed to by lprcSrc2.
lprcSrc2
Long pointer to a RECT structure that the function subtracts from the rectangle pointed to by lprcSrc1.
Return Values
Nonzero indicates success. Zero indicates failure.
To get extended error information, call GetLastError.
Remarks
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).
See Also