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 |
|
); |
|
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