2 files changed, 18 insertions, 0 deletions
diff --git a/src/widgets/styles/qwindowsstyle.cpp b/src/widgets/styles/qwindowsstyle.cpp
index 8496a2c223..497afd17e1 100644
--- a/src/widgets/styles/qwindowsstyle.cpp
+++ b/src/widgets/styles/qwindowsstyle.cpp
@@ -84,6 +84,7 @@
 #include <qpa/qplatformscreen.h>
 #include <private/qguiapplication_p.h>
 #include <private/qhighdpiscaling_p.h>
+#include <qpa/qplatformnativeinterface.h>
 #include <private/qwidget_p.h>
 
 #include <private/qstylehelper_p.h>
@@ -127,6 +128,22 @@ qreal QWindowsStylePrivate::appDevicePixelRatio()
     return qApp->devicePixelRatio();
 }
 
+bool QWindowsStylePrivate::isDarkMode()
+{
+    bool result = false;
+#ifdef Q_OS_WIN
+    // Windows only: Return whether dark mode style support is desired and
+    // dark mode is in effect.
+    if (auto ni = QGuiApplication::platformNativeInterface()) {
+        const QVariant darkModeStyleP = ni->property("darkModeStyle");
+        result = darkModeStyleP.type() == QVariant::Bool
+                 && darkModeStyleP.value<bool>()
+                 && ni->property("darkMode").value<bool>();
+    }
+#endif
+    return result;
+}
+
 // Returns \c true if the toplevel parent of \a widget has seen the Alt-key
 bool QWindowsStylePrivate::hasSeenAlt(const QWidget *widget) const
 {
diff --git a/src/widgets/styles/qwindowsstyle_p_p.h b/src/widgets/styles/qwindowsstyle_p_p.h
index 4f6ffcefc2..a25f5c4166 100644
--- a/src/widgets/styles/qwindowsstyle_p_p.h
+++ b/src/widgets/styles/qwindowsstyle_p_p.h
@@ -74,6 +74,7 @@ public:
     static qreal devicePixelRatio(const QWidget *widget = nullptr)
         { return widget ? widget->devicePixelRatioF() : QWindowsStylePrivate::appDevicePixelRatio(); }
     static qreal nativeMetricScaleFactor(const QWidget *widget = nullptr);
+    static bool isDarkMode();
 
     bool hasSeenAlt(const QWidget *widget) const;
     bool altDown() const { return alt_down; }