xorg-x11-server/p_xnest-ignore-getimage-errors.diff

Index: build-GucBkyZ/xorg-server-1.6.3.901/hw/xnest/GCOps.c
================================================================================
--- BUILD/xorg-server-1.7.99/hw/xnest/GCOps.c
+++ BUILD/xorg-server-1.7.99/hw/xnest/GCOps.c
@@ -94,6 +94,13 @@
   }
 }
 
+static int
+xnestIgnoreErrorHandler (Display     *display,
+		      XErrorEvent *event)
+{
+  return False; /* return value is ignored */
+}
+
 void
 xnestGetImage(DrawablePtr pDrawable, int x, int y, int w, int h,
 	      unsigned int format, unsigned long planeMask,
@@ -101,9 +108,13 @@
 {
   XImage *ximage;
   int length;
+  int (*old_handler)(Display*, XErrorEvent*);
 
+  /* we may get BadMatch error when xnest window is minimized */
+  old_handler = XSetErrorHandler (xnestIgnoreErrorHandler);
   ximage = XGetImage(xnestDisplay, xnestDrawable(pDrawable),
                      x, y, w, h, planeMask, format);
+  XSetErrorHandler (old_handler);
 
   if (ximage) {
       length = ximage->bytes_per_line * ximage->height;