stuffff

core/src/layout/widget/handle.rs

@@ -164,12 +164,12 @@ impl WidgetId {
         WidgetRef::new(self)
     }
 
-    pub(crate) fn map_event_managers(&self, f: impl Fn(&mut dyn EventManager)) {
+    pub(crate) fn map_event_managers(&self, f: impl Fn(Handle<dyn EventManager>)) {
         let Some(data) = self.weak().data() else {
             return;
         };
-        for mut m in data.event_managers() {
-            f(&mut *m)
+        for m in data.event_managers() {
+            f(m)
         }
     }
 }