XtAddExposureToRegion(3Xt)XT FUNCTIONS XtAddExposureToRegion(3Xt)
XtAddExposureToRegion - merge exposure events into a region
void XtAddExposureToRegion(XEvent *event, Region region);
event Specifies a pointer to the Expose or GraphicsEx-
pose event.
region Specifies the region object (as defined in
<X11/Xutil.h>).
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).
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
XFree86 Version 4.5.0 1
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