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X11R7.4 - man page for xunionrectwithregion (x11r4 section 3)

XIntersectRegion(3)			  XLIB FUNCTIONS		      XIntersectRegion(3)

NAME
       XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffse-
       tRegion, XShrinkRegion - region arithmetic

SYNTAX
       int XIntersectRegion(Region sra, Region srb, Region dr_return);

       int XUnionRegion(Region sra, Region srb, Region dr_return);

       int XUnionRectWithRegion(XRectangle *rectangle, Region src_region, Region
	      dest_region_return);

       int XSubtractRegion(Region sra, Region srb, Region dr_return);

       int XXorRegion(Region sra, Region srb, Region dr_return);

       int XOffsetRegion(Region r, int dx, int dy);

       int XShrinkRegion(Region r, int dx, int dy);

ARGUMENTS
       dest_region_return
		 Returns the destination region.

       dr_return Returns the result of the computation.  ds Dy move or shrink

       dx
       dy	 Specify the x and y coordinates, which define the amount you want to  the speci-
		 fied region.

       r	 Specifies the region.

       rectangle Specifies the rectangle.

       sra
       srb	 Specify the two regions with which you want to perform the computation.

       src_region
		 Specifies the source region to be used.

DESCRIPTION
       The XIntersectRegion function computes the intersection of two regions.

       The XUnionRegion function computes the union of two regions.

       The XUnionRectWithRegion function updates the destination region from a union of the spec-
       ified rectangle and the specified source region.

       The XSubtractRegion function subtracts srb from sra and stores the results in dr_return.

       The XXorRegion function calculates the difference between the union and intersection of
       two regions.

       The XOffsetRegion function moves the specified region by a specified amount.

       The XShrinkRegion function reduces the specified region by a specified amount.  Positive
       values shrink the size of the region, and negative values expand the region.

SEE ALSO
       XCreateRegion(3X11), XDrawRectangle(3X11), XEmptyRegion(3X11)
       Xlib - C Language X Interface

X Version 11				   libX11 1.2.1 		      XIntersectRegion(3)


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