--- a/event.c	Sat Oct 14 18:21:39 2006 +0200
+++ b/event.c	Mon Oct 16 16:50:03 2006 +0200
@@ -18,6 +18,7 @@
 KEYS
 
 #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+#define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
 
 static void
 movemouse(Client *c) {