Added -windowDidChangeScreen: delegate to handle condition where moving host window to a different screen would cause pick errors to be output.  The delegate just causes the stage to be redrawn which re-creates the pick buffer.


Patch is here:
https://github.com/spatulasnout/clutter/commit/7466e2e17a4ff2326769c1f1cbf1c6c651098c7c


commit 7466e2e17a4ff2326769c1f1cbf1c6c651098c7c
Author: Kirk A. Baker <kbaker@camerabits.com>
Date:   Mon Jul 25 15:02:46 2011 -0700

    Added -windowDidChangeScreen: delegate to handle condition where moving host window to a different screen would cause pick error

diff --git a/clutter/osx/clutter-stage-osx.c b/clutter/osx/clutter-stage-osx.c
index cc80e02..999520c 100644
--- a/clutter/osx/clutter-stage-osx.c
+++ b/clutter/osx/clutter-stage-osx.c
@@ -132,6 +132,11 @@ clutter_stage_osx_get_wrapper (ClutterStageWindow *stage_window);
   else
     return [self frame].size;
 }
+
+- (void)windowDidChangeScreen:(NSNotification *)notification
+{
+  clutter_redraw(CLUTTER_STAGE(self->stage_osx->wrapper));
+}
 @end

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