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XRectInRegion()						       XRectInRegion()

Name
  XRectInRegion – determine if a rectangle resides in a region.

Synopsis
  int XRectInRegion(r, x, y, width, height)
	Region r;
	int x, y;
	unsigned int width, height;

Arguments
  r	    Specifies the region.

  x	    Specify  the  x and y coordinates of the upper-left corner of
  y	    the rectangle, relative to the region's origin.

  width	    Specify the width and height in pixels of the rectangle.
  height

Returns
  RectangleIn, RectangleOut, or RectanglePart.

Description
  XRectInRegion() returns RectangleIn if the rectangle is completely con‐
  tained  in  the region r, RectangleOut if it is completely outside, and
  RectanglePart if it is partially inside.

  Regions are located using an offset from a point  (the  region  origin)
  which	 is common to all regions.  It is up to the application to inter‐
  pret the location of the region relative to a drawable.  If the  region
  is  to  be  used as a clip_mask by calling XSetRegion(), the upper-left
  corner of region relative to the drawable used in the graphics  request
  will	be  at	(xoffset + clip_x_origin, yoffset + clip_y_origin), where
  xoffset and yoffset are the offset of the region and clip_x_origin  and
  clip_y_origin are the clip origin in the GC used.

  For  this  function,	the x and y arguments are interpreted relative to
  the region origin; no drawable is involved.

Structures
  Region is a pointer to an opaque structure type.

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

Xlib - Regions						       XRectInRegion()

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