XEmptyRegion
Section: XLIB FUNCTIONS (3)
Updated: libX11 1.3
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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 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(3),
XIntersectRegion(3)
Xlib - C Language X Interface