X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=vector%2Fitemkeyfun.h;h=7bbe62579d4313045aa1591ee44a27b692834010;hb=74eec6f62db4459232f95b5d39069b9b4ceeb830;hp=1089a163fbb3876f5cbd3945c0c9a07abd418d1c;hpb=47f0e2bd1cc8942f5c92ffa2f37db416d98d9e9e;p=rrq%2Frrqmisc.git

diff --git a/vector/itemkeyfun.h b/vector/itemkeyfun.h
index 1089a16..7bbe625 100644
--- a/vector/itemkeyfun.h
+++ b/vector/itemkeyfun.h
@@ -1,6 +1,8 @@
 #ifndef itemkeyfun_H
 #define itemkeyfun_H
 
+#include <stdio.h>
+
 /**
  * \struct itemkeyfun
  *
@@ -48,6 +50,12 @@ typedef struct {
      */
     void (*releasekey)(SELF,void *key);
 
+    /**
+     * This callback function writes a representation of an item into
+     * a character buffer.
+     */
+    int (*tostring)(SELF,void *item,char *buffer,int limit);
+
 #undef SELF
 } itemkeyfun;