4 files changed, 24 insertions, 0 deletions
diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 37e8edb6f7..15955e2287 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -3641,6 +3641,14 @@ bool QGuiApplicationPrivate::shouldQuitInternal(const QWindowList &processedWind
     return true;
 }
 
+void QGuiApplicationPrivate::quit()
+{
+    if (auto *platformIntegration = QGuiApplicationPrivate::platformIntegration())
+        platformIntegration->quit();
+    else
+        QCoreApplicationPrivate::quit();
+}
+
 void QGuiApplicationPrivate::processApplicationTermination(QWindowSystemInterfacePrivate::WindowSystemEvent *windowSystemEvent)
 {
     QEvent event(QEvent::Quit);
diff --git a/src/gui/kernel/qguiapplication_p.h b/src/gui/kernel/qguiapplication_p.h
index 2bbb5ae9a6..7e3c2931f3 100644
--- a/src/gui/kernel/qguiapplication_p.h
+++ b/src/gui/kernel/qguiapplication_p.h
@@ -105,6 +105,7 @@ public:
     void addQtOptions(QList<QCommandLineOption> *options) override;
 #endif
     virtual bool shouldQuit() override;
+    void quit() override;
 
     bool shouldQuitInternal(const QWindowList &processedWindows);
 
diff --git a/src/gui/kernel/qplatformintegration.cpp b/src/gui/kernel/qplatformintegration.cpp
index 1127ab43d2..634a04b791 100644
--- a/src/gui/kernel/qplatformintegration.cpp
+++ b/src/gui/kernel/qplatformintegration.cpp
@@ -529,6 +529,20 @@ void QPlatformIntegration::beep() const
 {
 }
 
+/*!
+   \since 6.0
+
+   Asks the platform to terminate the application.
+
+   Overrides should ensure there's a callback into the QWSI
+   function handleApplicationTermination so that the quit can
+   be propagated to QtGui and the application.
+*/
+void QPlatformIntegration::quit() const
+{
+    QWindowSystemInterface::handleApplicationTermination<QWindowSystemInterface::SynchronousDelivery>();
+}
+
 #ifndef QT_NO_OPENGL
 /*!
   Platform integration function for querying the OpenGL implementation type.
diff --git a/src/gui/kernel/qplatformintegration.h b/src/gui/kernel/qplatformintegration.h
index 638d373c3c..5083542e12 100644
--- a/src/gui/kernel/qplatformintegration.h
+++ b/src/gui/kernel/qplatformintegration.h
@@ -220,6 +220,7 @@ public:
     virtual void setApplicationIcon(const QIcon &icon) const;
 
     virtual void beep() const;
+    virtual void quit() const;
 
 #if QT_CONFIG(vulkan) || defined(Q_CLANG_QDOC)
     virtual QPlatformVulkanInstance *createPlatformVulkanInstance(QVulkanInstance *instance) const;