XtAddExposureToRegion(3Xt) XT FUNCTIONSXtAddExposureToRegion(3Xt)NAMEXtAddExposureToRegion - merge exposure events into a
region
SYNTAX
void XtAddExposureToRegion(event, region)
XEvent *event;
Region region;
ARGUMENTS
event Specifies a pointer to the Expose or GraphicsEx-
pose 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 speci-
fied 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 mecha-
nism (see Section 7.9.3).
SEE ALSO
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 Release 6.4 1