Fix mac multiple window crash

SineStriker

2024-01-05 f916057f79f045a975d29929b9f21448541d79b2

 src/quick/quickwindowagent_win.cpp

@@ -1,3 +1,7 @@
// Copyright (C) 2023-2024 Stdware Collections (https://www.github.com/stdware)
// Copyright (C) 2021-2023 wangwenx190 (Yuhang Zhao)
// SPDX-License-Identifier: Apache-2.0

#include "quickwindowagent_p.h"

#include <QtQuick/QQuickPaintedItem>
@@ -101,6 +105,7 @@
    bool BorderItem::nativeEventFilter(const QByteArray &eventType, void *message,
                                       QT_NATIVE_EVENT_RESULT_TYPE *result) {
        Q_UNUSED(eventType)

        const auto msg = static_cast<const MSG *>(message);
        switch (msg->message) {
            case WM_THEMECHANGED:
@@ -125,6 +130,7 @@

    bool BorderItem::sharedEventFilter(QObject *obj, QEvent *event) {
        Q_UNUSED(obj)
        
        switch (event->type()) {
            case QEvent::WindowStateChange: {
                updateGeometry();