--- im.h.orig	Tue Mar  3 21:08:33 1998
+++ im.h	Fri Mar 19 14:10:22 1999
@@ -148,6 +148,10 @@
     XIMStyle input_style ;
     Window client ;			/* client window */
     Window focus ;			/* focus window */
+#ifndef	ORIGINAL
+#define ATTR_MASK_FILTER_EVENTS	(1<<3)
+    unsigned long filter_events;	/* Event mask that IM need */
+#endif
 } IMCommonAttributes;
 
 typedef struct {