diff --git a/include/FramelessHelper/Quick/framelessquickutils.h b/include/FramelessHelper/Quick/framelessquickutils.h
index 45c51049..a2851ff0 100644
--- a/include/FramelessHelper/Quick/framelessquickutils.h
+++ b/include/FramelessHelper/Quick/framelessquickutils.h
@@ -56,6 +56,7 @@ class FRAMELESSHELPER_QUICK_API FramelessQuickUtils : public QObject, public QQm
     Q_PROPERTY(QSizeF defaultSystemButtonIconSize READ defaultSystemButtonIconSize CONSTANT FINAL)
     Q_PROPERTY(QColor defaultSystemButtonBackgroundColor READ defaultSystemButtonBackgroundColor CONSTANT FINAL)
     Q_PROPERTY(QColor defaultSystemCloseButtonBackgroundColor READ defaultSystemCloseButtonBackgroundColor CONSTANT FINAL)
+    Q_PROPERTY(bool blurBehindWindowSupported READ blurBehindWindowSupported CONSTANT FINAL)
 
 public:
     explicit FramelessQuickUtils(QObject *parent = nullptr);
@@ -74,6 +75,7 @@ class FRAMELESSHELPER_QUICK_API FramelessQuickUtils : public QObject, public QQm
     Q_NODISCARD QSizeF defaultSystemButtonIconSize() const;
     Q_NODISCARD QColor defaultSystemButtonBackgroundColor() const;
     Q_NODISCARD QColor defaultSystemCloseButtonBackgroundColor() const;
+    Q_NODISCARD bool blurBehindWindowSupported() const;
 
     Q_NODISCARD Q_SLOT QColor getSystemButtonBackgroundColor(
         const QuickGlobal::SystemButtonType button, const QuickGlobal::ButtonState state);
diff --git a/src/core/framelessmanager.cpp b/src/core/framelessmanager.cpp
index 64bd9fad..53df4e8e 100644
--- a/src/core/framelessmanager.cpp
+++ b/src/core/framelessmanager.cpp
@@ -142,22 +142,12 @@ bool InternalEventFilter::eventFilter(QObject *object, QEvent *event)
     if (!data || !data->frameless || !data->callbacks) {
         return false;
     }
-    switch (event->type()) {
-    case QEvent::WinIdChange: {
+    if (event->type() == QEvent::WinIdChange) {
         const WId windowId = data->callbacks->getWindowId();
         Q_ASSERT(windowId);
         if (windowId) {
             FramelessManagerPrivate::updateWindowId(m_window, windowId);
         }
-    } break;
-    case QEvent::Close: {
-        const auto ce = static_cast<const QCloseEvent *>(event);
-        if (ce->isAccepted()) {
-            std::ignore = FramelessManager::instance()->removeWindow(m_window);
-        }
-    } break;
-    default:
-        break;
     }
     return false;
 }
diff --git a/src/quick/framelessquickutils.cpp b/src/quick/framelessquickutils.cpp
index 06ba473a..432e04da 100644
--- a/src/quick/framelessquickutils.cpp
+++ b/src/quick/framelessquickutils.cpp
@@ -131,6 +131,11 @@ QColor FramelessQuickUtils::defaultSystemCloseButtonBackgroundColor() const
     return kDefaultSystemCloseButtonBackgroundColor;
 }
 
+bool FramelessQuickUtils::blurBehindWindowSupported() const
+{
+    return Utils::isBlurBehindWindowSupported();
+}
+
 QColor FramelessQuickUtils::getSystemButtonBackgroundColor(const QuickGlobal::SystemButtonType button,
                                                            const QuickGlobal::ButtonState state)
 {