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#define INCL_WINRECTANGLES
 
BOOL WinUnionRect(hab, prclDst, prclSrc1, prclSrc2)
HAB hab;            /* handle of the anchor block                     */
PRECTL prclDst;     /* address of the destination rectangle structure */
PRECTL prclSrc1;    /* address of the first rectangle structure       */
PRECTL prclSrc2;    /* address of the second rectangle structure      */
 
The WinUnionRect function calculates a rectangle that bounds the two source
rectangles.
 
Parameter  Description
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hab        Identifies an anchor block.
 
prclDst    Points to a RECTL structure that will receive a rectangle
           bounding the rectangles pointed to by the prclSrc1 and prclSrc2
           parameters.
 
prclSrc1   Points to a RECTL structure that contains the first source
           rectangle.
 
prclSrc2   Points to a RECTL structure that contains the second source
           rectangle.
 
Return Value
 
The return value is TRUE if prclDst is a nonempty rectangle. Otherwise, it
is FALSE, indicating that an error occurred or that the prclDst rectangle is
empty. If one of the source rectangles is NULL, the other is returned.
 
See Also
 
WinIntersectRect, WinSubtractRect, RECTL
 
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