--- X11/include/X11/Xlib.h-orig	2005-09-02 15:57:19.000000000 +0900
+++ X11/include/X11/Xlib.h	2005-09-03 07:40:51.000000000 +0900
@@ -1091,11 +1091,33 @@
     char **font_name_list;
 } XOMFontInfo;
 
-typedef void (*XIMProc)();
-
 typedef struct _XIM *XIM;
 typedef struct _XIC *XIC;
 
+typedef void (*XIMProc)(
+#if NeedFunctionPrototypes
+    XIM,
+    XPointer,
+    XPointer
+#endif
+);
+
+typedef Bool (*XICProc)(
+#if NeedFunctionPrototypes
+    XIC,
+    XPointer,
+    XPointer
+#endif
+);
+
+typedef void (*XIDProc)(
+#if NeedFunctionPrototypes
+    Display*,
+    XPointer,
+    XPointer
+#endif
+);
+
 typedef unsigned long XIMStyle;
 
 typedef struct {