Index: trunk/src/gl/gl_window.cc
===================================================================
--- trunk/src/gl/gl_window.cc	(revision 245)
+++ trunk/src/gl/gl_window.cc	(revision 246)
@@ -129,4 +129,6 @@
 	mevent.mmove.x       = static_cast< uint16 >( mm.x );
 	mevent.mmove.y       = static_cast< uint16 >( mm.y );
+	mevent.mmove.rx      = static_cast< sint16 >( mm.xrel );
+	mevent.mmove.ry      = static_cast< sint16 >( mm.yrel );
 	return true;
 }