diff --git a/5.15.2/qtbase/src/widgets/widgets/qwidgettextcontrol.cpp b/5.15.2/qtbase/src/widgets/widgets/qwidgettextcontrol.cpp
index 40b8af6..e2a07c0 100644
--- a/5.15.2/qtbase/src/widgets/widgets/qwidgettextcontrol.cpp
+++ b/5.15.2/qtbase/src/widgets/widgets/qwidgettextcontrol.cpp
@@ -1942,10 +1942,14 @@ void QWidgetTextControlPrivate::contextMenuEvent(const QPoint &screenPos, const
     if (!menu)
         return;
     menu->setAttribute(Qt::WA_DeleteOnClose);
-    if (auto *window = static_cast<QWidget *>(parent)->window()->windowHandle()) {
-        QMenuPrivate::get(menu)->topData()->initialScreenIndex =
+
+    if (auto *widget = qobject_cast<QWidget *>(parent)) {
+        if (auto *window = widget->window()->windowHandle()) {
+            QMenuPrivate::get(menu)->topData()->initialScreenIndex =
                 QGuiApplication::screens().indexOf(window->screen());
+        }
     }
+
     menu->popup(screenPos);
 #endif
 }