XEmptyRegion(3X11)  X Version 11 (Release 4)   XEmptyRegion(3X11)



  NAME
       XEmptyRegion, XEqualRegion, XPointInRegion, XRectInRegion -
       determine if regions are empty or equal

  SYNTAX
       Bool XEmptyRegion(r)
             Region r;

       Bool XEqualRegion(r1, r2)
             Region r1, r2;

       Bool XPointInRegion(r, x, y)
             Region r;
             int x, y;

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

  ARGUMENTS
       r         Specifies the region.

       r1
       r2        Specify the two regions.

       width
       height    Specify the width and height, which define the
                 rectangle.

       x
       y         Specify the x and y coordinates, which define the
                 point or the coordinates of the upper-left corner
                 of the rectangle.

  DESCRIPTION
       The XEmptyRegion function returns True if the region is
       empty.




  Page 1                                          (printed 8/30/91)

  XEmptyRegion(3X11)  X Version 11 (Release 4)   XEmptyRegion(3X11)



       The XEqualRegion function returns True if the two regions
       have the same offset, size, and shape.

       The XPointInRegion function returns True if the point (x, y)
       is contained in the region r.

       The XRectInRegion function returns RectangleIn if the
       rectangle is entirely in the specified region, RectangleOut
       if the rectangle is entirely out of the specified region,
       and RectanglePart if the rectangle is partially in the
       specified region.

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



























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