From 38c36f01580c293dc77d246f376176d186402ca4 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 6 Aug 2009 10:57:42 +0000
Subject: [PATCH] Added a viewer.frame() call prior to the useCursor(false)
 calls to avoid a threading crash under X11

---
 applications/present3D/present3D.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/applications/present3D/present3D.cpp b/applications/present3D/present3D.cpp
index db606c30b..60be9cc97 100644
--- a/applications/present3D/present3D.cpp
+++ b/applications/present3D/present3D.cpp
@@ -591,9 +591,14 @@ int main( int argc, char **argv )
 
         viewerInitialized = true;
     }
-    
+
     if (!cursorFileName.empty())
     {
+        // have to add a frame in here to avoid problems with X11 threading issue on switching off the cursor
+        // not yet sure why it makes a difference, but it at least fixes the crash that would otherwise occur
+        // under X11.
+        viewer.frame();
+
         // switch off the cursor
         osgViewer::Viewer::Windows windows;
         viewer.getWindows(windows);