add OLOCK
diff --git a/include/draw.h b/include/draw.h
index 9e1a5d5..4898e31 100644
--- a/include/draw.h
+++ b/include/draw.h
@@ -536,6 +536,8 @@
 int	_drawmsgwrite(Display*, void*, int);
 int	_latin1(Rune*, int);
 
+int	mousescrollsize(int);
+
 #if defined(__cplusplus)
 }
 #endif