redhat man page for xoffsetregion

XIntersectRegion(3X11)						  XLIB FUNCTIONS					    XIntersectRegion(3X11)

NAME
       XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion - region arithmetic

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

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

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

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

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

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

       XShrinkRegion(r, dx, dy)
	     Region r;
	     int dx, 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 specified 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 specified 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							    Release 6.6 					    XIntersectRegion(3X11)