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XSubtractRegion()					     XSubtractRegion()

Name
  XSubtractRegion – subtract one region from another.

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

Arguments
  sra	    Specify the two regions in which you want to perform the com‐
  srb	    putation.

  dr_return Returns the result of the computation.

Description
  XSubtractRegion() calculates the difference  between	the  two  regions
  specified (sra - srb) and puts the result in dr_return.

  This function returns a region which contains all parts of sra that are
  not also in srb.

  For more information on regions, see Volume  One,  Chapter  6,  Drawing
  Graphics and Text.

Structures
  Region is a pointer to an opaque structure type.

See Also
  XClipBox(),  XCreateRegion(), XDestroyRegion(), XEmptyRegion(), XEqual‐
  Region(), XIntersectRegion(), XOffsetRegion(), XPointInRegion(), XPoly‐
  gonRegion(),	XRectInRegion(),  XSetRegion(),	 XShrinkRegion(), XUnion‐
  RectWithRegion(), XUnionRegion(), XXorRegion().

Xlib - Regions						     XSubtractRegion()

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