XtAddExposureToRegion(3)	  XT FUNCTIONS		XtAddExposureToRegion(3)

NAME
     XtAddExposureToRegion - merge exposure events into a region

SYNTAX
     #include <X11/Intrinsic.h>

     void XtAddExposureToRegion(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 de-
     fined 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 Graphic-
     sExpose  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

X Version 11			   libXt 1.3.1		XtAddExposureToRegion(3)