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XEmptyRegion

Section: XLIB FUNCTIONS (3)
Updated: libX11 1.6.4
Index Return to Main Contents
 

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


 

Index

NAME
SYNTAX
ARGUMENTS
DESCRIPTION
SEE ALSO


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