diff -r 5099a34747c4 -r a8faf8757450 ui/gtk/graphics.c
--- a/ui/gtk/graphics.c	Sun Apr 07 11:26:38 2024 +0200
+++ b/ui/gtk/graphics.c	Sun Apr 07 12:36:07 2024 +0200
@@ -104,6 +104,8 @@
         event->obj = obj;
         event->callback = f;
         event->userdata = u;
+        event->customdata = NULL;
+        event->value = 0;
         
         g_signal_connect(G_OBJECT(widget),
                 "button-press-event",