XEmptyRegion(3) - NetBSD Manual Pages

XEmptyRegion(3)                                                XEmptyRegion(3)




NAME

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


SYNTAX

       Bool XEmptyRegion(Region r);

       Bool XEqualRegion(Region r1, Region r2);

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

       int XRectInRegion(Region r, int x, int y, unsigned int width,  unsigned
              int 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 con-
       tained 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  rectan-
       gle is partially in the specified region.


SEE ALSO

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



XLIB FUNCTIONS                   X Version 11                  XEmptyRegion(3)