diff -r eeb50c534497 -r c1a75454b444 ui/motif/button.c
--- a/ui/motif/button.c	Fri Mar 21 13:20:53 2014 +0100
+++ b/ui/motif/button.c	Sat Mar 22 10:37:12 2014 +0100
@@ -58,3 +58,12 @@
     e.intval = tb->set;
     event->callback(&e, event->user_data); 
 }
+
+void ui_push_button_callback(Widget widget, UiEventData *event, XtPointer d) {
+    UiEvent e;
+    e.obj = event->obj;
+    e.window = event->obj->window;
+    e.document = event->obj->document;
+    e.intval = 0;
+    event->callback(&e, event->user_data);
+}