XEmptyRegion(3X11)            X11 SDE 5.4R3.00            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.

       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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