XtAddExposureToRegioX(Version 11 (ReleaXtAddExposureToRegion(3Xt)
NAME
XtAddExposureToRegion - merge exposure events into a region
SYNTAX
void XtAddExposureToRegion(event, region)
XEvent *event;
Region region;
ARGUMENTS
event Specifies a pointer to the Expose or
GraphicsExpose event.
region Specifies the region object (as defined in
<X11/Xutil.h>).
DESCRIPTION
The XtAddExposureToRegion function computes the union of the
rectangle defined by the exposure event and the specified
region. Then, it stores the results back in region. If the
event argument is not an Expose or GraphicsExpose event,
XtAddExposureToRegion returns without an error and without
modifying region.
This function is used by the exposure compression mechanism
(see Section 7.9.3).
SEE ALSO
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
Page 1 (printed 7/20/06)
