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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| user32.lib
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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UnionRect
The UnionRect function creates the union of two rectangles. The union is the smallest
rectangle that contains both source rectangles.
BOOL UnionRect(
LPRECT lprcDst,
| // address of structure for union
| CONST RECT *lprcSrc1,
| // address of structure with first rectangle
| CONST RECT *lprcSrc2
| // address of structure with second rectangle
| );
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Parameters
lprcDst
Points to the RECT structure that will receive a rectangle containing the rectangles pointed to
by the lprcSrc1 and lprcSrc2 parameters.
lprcSrc1
Points to the RECT structure that contains the first source rectangle.
lprcSrc2
Points to the RECT structure that contains the second source rectangle.
Return Values
If the specified structure contains a nonempty rectangle, the return value is
nonzero.
If the specified structure does not contain a nonempty rectangle, the return
value is zero. To get extended error information, call GetLastError.
Remarks
Windows ignores the dimensions of an empty rectangle  that is, a rectangle in which all coordinates are set to zero, so that it has
no height or no width.
See Also
InflateRect, IntersectRect, OffsetRect, RECT
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