qt 6.5.1 original

tests/auto/widgets/kernel/qapplication/modal/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## modal Binary:
+#####################################################################
+
+qt_internal_add_executable(modal_helper
+    SOURCES
+        base.cpp base.h
+        main.cpp
+    OUTPUT_DIRECTORY
+        ${CMAKE_CURRENT_BINARY_DIR}/..
+    LIBRARIES
+        Qt::Gui
+        Qt::Widgets
+)
+
+## Scopes:
+#####################################################################

tests/auto/widgets/kernel/qapplication/modal/base.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "base.h"
+
+base::base(QWidget *parent) :
+    QWidget(parent)
+{
+    m_timer = new QTimer(this);
+    m_timer->setSingleShot(false);
+    connect(m_timer, &QTimer::timeout, this, &base::periodicTimer);
+    m_timer->start(5000);
+}
+
+void base::periodicTimer()
+{
+    if(m_modalStarted)
+        exit(0);
+    m_modalDialog = new QDialog(this);
+    m_modalDialog->setWindowTitle(QLatin1String("modal"));
+    m_modalDialog->setModal(true);
+    m_modalDialog->show();
+    m_modalStarted = true;
+}

tests/auto/widgets/kernel/qapplication/modal/base.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef BASE_H
+#define BASE_H
+
+#include <QWidget>
+#include <QTimer>
+#include <QDialog>
+
+class base : public QWidget
+{
+Q_OBJECT
+    QTimer *m_timer;
+    bool m_modalStarted = false;
+    QDialog *m_modalDialog = nullptr;
+public:
+    explicit base(QWidget *parent = nullptr);
+
+public slots:
+    void periodicTimer();
+};
+
+#endif // BASE_H

tests/auto/widgets/kernel/qapplication/modal/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QApplication>
+#include "base.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    QApplication::setAttribute(Qt::AA_NativeWindows); //QTBUG-15774
+    base b;
+    return app.exec();
+}