diff --git a/examples/OpenGLWindow/X11OpenGLWindow.cpp b/examples/OpenGLWindow/X11OpenGLWindow.cpp
index e6d0f666d..f2a077145 100644
--- a/examples/OpenGLWindow/X11OpenGLWindow.cpp
+++ b/examples/OpenGLWindow/X11OpenGLWindow.cpp
@@ -1076,6 +1076,20 @@ b3KeyboardCallback      X11OpenGLWindow::getKeyboardCallback()
 	return m_data->m_keyboardCallback;
 }
 
+int   X11OpenGLWindow::getWidth() const
+{
+    if (m_data)
+        return m_data->m_glWidth;
+    return 0;
+}
+int   X11OpenGLWindow::getHeight() const
+{
+    if (m_data)
+        return m_data->m_glHeight;
+    return 0;
+}
+
+
 #include <stdio.h>
 
 int X11OpenGLWindow::fileOpenDialog(char* filename, int maxNameLength)
diff --git a/examples/OpenGLWindow/X11OpenGLWindow.h b/examples/OpenGLWindow/X11OpenGLWindow.h
index cc28aae1a..fd88689bc 100644
--- a/examples/OpenGLWindow/X11OpenGLWindow.h
+++ b/examples/OpenGLWindow/X11OpenGLWindow.h
@@ -54,7 +54,7 @@ public:
         virtual void setResizeCallback(b3ResizeCallback resizeCallback);
         virtual void setWheelCallback(b3WheelCallback wheelCallback);
         virtual void setKeyboardCallback( b3KeyboardCallback    keyboardCallback);
-        
+
 		virtual b3MouseMoveCallback getMouseMoveCallback();
 		virtual b3MouseButtonCallback getMouseButtonCallback();
 		virtual b3ResizeCallback getResizeCallback();
@@ -65,9 +65,14 @@ public:
 
         virtual void setWindowTitle(const char* title);
 
+        virtual int   getWidth() const;
+
+        virtual int   getHeight() const;
+
 	int fileOpenDialog(char* filename, int maxNameLength);
 };
 
 
+
 #endif