diff --git a/src/widgets/dplatformwindowhandle.cpp b/src/widgets/dplatformwindowhandle.cpp
index 987cba0dc..9df301ee9 100644
--- a/src/widgets/dplatformwindowhandle.cpp
+++ b/src/widgets/dplatformwindowhandle.cpp
@@ -377,6 +377,11 @@ bool DPlatformWindowHandle::autoInputMaskByClipPath() const
     return m_window->property(_autoInputMaskByClipPath).toBool();
 }
 
+WId DPlatformWindowHandle::realWindowId() const
+{
+    return qvariant_cast<WId>(m_window->property("_d_real_content_window"));
+}
+
 void DPlatformWindowHandle::setWindowRadius(int windowRadius)
 {
     setWindowProperty(m_window, _windowRadius, windowRadius);
diff --git a/src/widgets/dplatformwindowhandle.h b/src/widgets/dplatformwindowhandle.h
index f921e69cc..05342d2d6 100644
--- a/src/widgets/dplatformwindowhandle.h
+++ b/src/widgets/dplatformwindowhandle.h
@@ -52,6 +52,7 @@ class DPlatformWindowHandle : public QObject
     Q_PROPERTY(bool enableSystemMove READ enableSystemMove WRITE setEnableSystemMove NOTIFY enableSystemMoveChanged)
     Q_PROPERTY(bool enableBlurWindow READ enableBlurWindow WRITE setEnableBlurWindow NOTIFY enableBlurWindowChanged)
     Q_PROPERTY(bool autoInputMaskByClipPath READ autoInputMaskByClipPath WRITE setAutoInputMaskByClipPath NOTIFY autoInputMaskByClipPathChanged)
+    Q_PROPERTY(WId realWindowId READ realWindowId CONSTANT)
 
 public:
     explicit DPlatformWindowHandle(QWindow *window, QObject *parent = 0);
@@ -100,6 +101,8 @@ class DPlatformWindowHandle : public QObject
     bool enableBlurWindow() const;
     bool autoInputMaskByClipPath() const;
 
+    WId realWindowId() const;
+
 public Q_SLOTS:
     void setWindowRadius(int windowRadius);