Windows: Add a default setting for hasBorderInFullScreen

The hasBorderInFullScreen only has an effect when set before
the window is shown or switched to fullscreen. This is currently
not possible in the QML case since the window is only accessible
after all properties (including visibility) have been set.
Add a function to set a default value.

[ChangeLog][QtPlatformHeaders][QWindowsWindowFunctions] Add a default
setting for hasBorderInFullScreen

Task-number: QTBUG-47247
Task-number: QTBUG-71855
Change-Id: I3952e3f34bc4eb134cf1c5265b4489fc74112688
Reviewed-by: Andre de la Rocha <andre.rocha@qt.io>
Reviewed-by: Andy Shaw <andy.shaw@qt.io>

3 files changed, 11 insertions, 1 deletions

diff --git a/src/plugins/platforms/windows/qwindowsnativeinterface.cpp b/src/plugins/platforms/windows/qwindowsnativeinterface.cpp
index de11356fd4..a1ff6f1141 100644
--- a/src/plugins/platforms/windows/qwindowsnativeinterface.cpp
+++ b/src/plugins/platforms/windows/qwindowsnativeinterface.cpp
@@ -277,6 +277,8 @@ QFunctionPointer QWindowsNativeInterface::platformFunction(const QByteArray &fun
         return QFunctionPointer(QWindowsWindow::setTouchWindowTouchTypeStatic);
     if (function == QWindowsWindowFunctions::setHasBorderInFullScreenIdentifier())
         return QFunctionPointer(QWindowsWindow::setHasBorderInFullScreenStatic);
+    if (function == QWindowsWindowFunctions::setHasBorderInFullScreenDefaultIdentifier())
+        return QFunctionPointer(QWindowsWindow::setHasBorderInFullScreenDefault);
     if (function == QWindowsWindowFunctions::setWindowActivationBehaviorIdentifier())
         return QFunctionPointer(QWindowsNativeInterface::setWindowActivationBehavior);
     if (function == QWindowsWindowFunctions::isTabletModeIdentifier())
diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index f340f16679..6201da7b72 100644
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -1190,6 +1190,7 @@ QWindowCreationContext::QWindowCreationContext(const QWindow *w,
 
 const char *QWindowsWindow::embeddedNativeParentHandleProperty = "_q_embedded_native_parent_handle";
 const char *QWindowsWindow::hasBorderInFullScreenProperty = "_q_has_border_in_fullscreen";
+bool QWindowsWindow::m_borderInFullScreenDefault = false;
 
 QWindowsWindow::QWindowsWindow(QWindow *aWindow, const QWindowsWindowData &data) :
     QWindowsBaseWindow(aWindow),
@@ -1227,7 +1228,7 @@ QWindowsWindow::QWindowsWindow(QWindow *aWindow, const QWindowsWindowData &data)
 
     if (aWindow->isTopLevel())
         setWindowIcon(aWindow->icon());
-    if (aWindow->property(hasBorderInFullScreenProperty).toBool())
+    if (m_borderInFullScreenDefault || aWindow->property(hasBorderInFullScreenProperty).toBool())
         setFlag(HasBorderInFullScreen);
     clearFlag(WithinCreate);
 }
@@ -2804,6 +2805,11 @@ void QWindowsWindow::setHasBorderInFullScreenStatic(QWindow *window, bool border
         window->setProperty(hasBorderInFullScreenProperty, QVariant(border));
 }
 
+void QWindowsWindow::setHasBorderInFullScreenDefault(bool border)
+{
+    m_borderInFullScreenDefault = border;
+}
+
 void QWindowsWindow::setHasBorderInFullScreen(bool border)
 {
     if (testFlag(HasBorderInFullScreen) == border)
diff --git a/src/plugins/platforms/windows/qwindowswindow.h b/src/plugins/platforms/windows/qwindowswindow.h
index e8c30bd44b..4d136151fe 100644
--- a/src/plugins/platforms/windows/qwindowswindow.h
+++ b/src/plugins/platforms/windows/qwindowswindow.h
@@ -338,6 +338,7 @@ public:
     static void setTouchWindowTouchTypeStatic(QWindow *window, QWindowsWindowFunctions::TouchWindowTouchTypes touchTypes);
     void registerTouchWindow(QWindowsWindowFunctions::TouchWindowTouchTypes touchTypes = QWindowsWindowFunctions::NormalTouch);
     static void setHasBorderInFullScreenStatic(QWindow *window, bool border);
+    static void setHasBorderInFullScreenDefault(bool border);
     void setHasBorderInFullScreen(bool border);
     static QString formatWindowTitle(const QString &title);
 
@@ -381,6 +382,7 @@ private:
     // note: intentionally not using void * in order to avoid breaking x86
     VkSurfaceKHR m_vkSurface = 0;
 #endif
+    static bool m_borderInFullScreenDefault;
 };
 
 #ifndef QT_NO_DEBUG_STREAM