1 files changed, 3 insertions, 0 deletions
diff --git a/gtypes.h b/gtypes.h
index 5f7d4937f..c43d322a7 100644
--- a/gtypes.h
+++ b/gtypes.h
@@ -69,6 +69,9 @@ typedef const void *gconstpointer;
 
 typedef gint            (*GCompareFunc)         (gconstpointer  a,
                                                  gconstpointer  b);
+typedef gint            (*GCompareFuncData)     (gconstpointer  a,
+                                                 gconstpointer  b,
+						 gpointer       user_data);
 typedef gboolean        (*GEqualFunc)           (gconstpointer  a,
                                                  gconstpointer  b);
 typedef void            (*GDestroyNotify)       (gpointer       data);