--- a/ui/gtk/range.c	Sun Jul 13 11:02:45 2025 +0200
+++ b/ui/gtk/range.c	Sun Jul 13 11:38:27 2025 +0200
@@ -62,6 +62,7 @@
         event->callback = f;
         event->value = 0;
         event->customdata = NULL;
+        event->customint = 0;
         
         g_signal_connect(
                 G_OBJECT(scrollbar),
@@ -95,6 +96,7 @@
     e.window = event->obj->window;
     e.document = event->obj->ctx->document;
     e.eventdata = NULL;
+    e.eventdatatype = 0;
     e.intval = event->value;
     event->callback(&e, event->userdata); 
     return TRUE;