diff --git a/include/FramelessHelper/Core/private/framelesshelpercore_global_p.h b/include/FramelessHelper/Core/private/framelesshelpercore_global_p.h
index f20b97a..0eaf6b3 100644
--- a/include/FramelessHelper/Core/private/framelesshelpercore_global_p.h
+++ b/include/FramelessHelper/Core/private/framelesshelpercore_global_p.h
@@ -134,14 +134,14 @@ struct FRAMELESSHELPER_CORE_API FramelessData
 {
     QObject *window = nullptr;
     WId windowId = 0;
-    QObject *winIdUpdater = nullptr;
+    QObject *eventFilter = nullptr;
     bool frameless = false;
     FramelessCallbacksPtr callbacks = nullptr;
     FramelessExtraDataHash extraData = {};
 
     FramelessData();
     virtual ~FramelessData();
-    
+
     using PtrType = std::shared_ptr<FramelessData>;
     [[nodiscard]] static PtrType create();
 
diff --git a/include/FramelessHelper/Core/utils.h b/include/FramelessHelper/Core/utils.h
index 40b7e04..f736340 100644
--- a/include/FramelessHelper/Core/utils.h
+++ b/include/FramelessHelper/Core/utils.h
@@ -125,7 +125,6 @@ namespace Utils
 [[nodiscard]] FRAMELESSHELPER_CORE_API bool bringWindowToFront(const WId windowId);
 [[nodiscard]] FRAMELESSHELPER_CORE_API QPoint getWindowPlacementOffset(const WId windowId);
 [[nodiscard]] FRAMELESSHELPER_CORE_API QRect getWindowRestoreGeometry(const WId windowId);
-[[nodiscard]] FRAMELESSHELPER_CORE_API bool removeMicaWindow(const WId windowId);
 [[nodiscard]] FRAMELESSHELPER_CORE_API quint64 getKeyState();
 [[nodiscard]] FRAMELESSHELPER_CORE_API bool isValidWindow(const WId windowId, const bool checkVisible, const bool checkTopLevel);
 [[nodiscard]] FRAMELESSHELPER_CORE_API bool updateFramebufferTransparency(const WId windowId);
diff --git a/src/core/framelessmanager.cpp b/src/core/framelessmanager.cpp
index 9419e7e..21d2ebb 100644
--- a/src/core/framelessmanager.cpp
+++ b/src/core/framelessmanager.cpp
@@ -45,6 +45,7 @@
 #include <QtCore/qloggingcategory.h>
 #include <QtGui/qfontdatabase.h>
 #include <QtGui/qwindow.h>
+#include <QtGui/qevent.h>
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
 #  include <QtGui/qguiapplication.h>
 #  include <QtGui/qstylehints.h>
@@ -105,63 +106,55 @@ Q_GLOBAL_STATIC(InternalData, g_internalData)
 }
 #endif
 
-class WinIdUpdater : public QObject
+class InternalEventFilter : public QObject
 {
     Q_OBJECT
-    Q_DISABLE_COPY_MOVE(WinIdUpdater)
-    Q_PROPERTY(QObject* window READ window WRITE setWindow NOTIFY windowChanged FINAL)
+    Q_DISABLE_COPY_MOVE(InternalEventFilter)
 
 public:
-    explicit WinIdUpdater(QObject *parent = nullptr);
-    ~WinIdUpdater() override;
-
-    Q_NODISCARD QObject *window() const;
-    void setWindow(QObject *window);
-
-Q_SIGNALS:
-    void windowChanged();
+    explicit InternalEventFilter(const QObject *window, QObject *parent = nullptr);
+    ~InternalEventFilter() override;
 
 protected:
     Q_NODISCARD bool eventFilter(QObject *object, QEvent *event) override;
 
 private:
-    QObject *m_window = nullptr;
+    const QObject *m_window = nullptr;
 };
 
-WinIdUpdater::WinIdUpdater(QObject *parent) : QObject(parent)
+InternalEventFilter::InternalEventFilter(const QObject *window, QObject *parent) : QObject(parent), m_window(window)
 {
+    Q_ASSERT(m_window);
+    Q_ASSERT(m_window->isWidgetType() || m_window->isWindowType());
 }
 
-WinIdUpdater::~WinIdUpdater() = default;
+InternalEventFilter::~InternalEventFilter() = default;
 
-QObject *WinIdUpdater::window() const
+bool InternalEventFilter::eventFilter(QObject *object, QEvent *event)
 {
-    return m_window;
-}
-
-void WinIdUpdater::setWindow(QObject *window)
-{
-    Q_ASSERT(window);
-    Q_ASSERT(window->isWidgetType() || window->isWindowType());
-    if (!window || !(window->isWidgetType() || window->isWindowType()) || (m_window == window)) {
-        return;
+    if (!object || !m_window || (object != m_window)) {
+        return false;
     }
-    m_window = window;
-    Q_EMIT windowChanged();
-}
-
-bool WinIdUpdater::eventFilter(QObject *object, QEvent *event)
-{
-    if (m_window && object && (object == m_window) && (event->type() == QEvent::WinIdChange)) {
-        if (const FramelessDataPtr data = FramelessManagerPrivate::getData(m_window)) {
-            if (data->frameless && data->callbacks) {
-                const WId windowId = data->callbacks->getWindowId();
-                Q_ASSERT(windowId);
-                if (windowId) {
-                    FramelessManagerPrivate::updateWindowId(m_window, windowId);
-                }
-            }
+    const FramelessDataPtr data = FramelessManagerPrivate::getData(m_window);
+    if (!data || !data->frameless || !data->callbacks) {
+        return false;
+    }
+    switch (event->type()) {
+    case 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<QCloseEvent *>(event);
+        if (ce->isAccepted()) {
+            std::ignore = FramelessManager::instance()->removeWindow(m_window);
+        }
+    } break;
+    default:
+        break;
     }
     return false;
 }
@@ -324,10 +317,8 @@ FramelessDataPtr FramelessManagerPrivate::createData(const QObject *window, cons
         FramelessDataPtr data = FramelessData::create();
         data->window = win;
         data->windowId = windowId;
-        const auto winIdUpdater = new WinIdUpdater(data->window);
-        winIdUpdater->setWindow(data->window);
-        data->window->installEventFilter(winIdUpdater);
-        data->winIdUpdater = winIdUpdater;
+        data->eventFilter = new InternalEventFilter(data->window, data->window);
+        data->window->installEventFilter(data->eventFilter);
         it = g_internalData()->dataMap.insert(win, data);
         g_internalData()->windowMap.insert(windowId, win);
     }
@@ -508,11 +499,9 @@ bool FramelessManager::addWindow(const QObject *window, const WId windowId)
         g_internalData()->dataMap.insert(data->window, data);
         g_internalData()->windowMap.insert(windowId, data->window);
     }
-    if (!data->winIdUpdater) {
-        const auto winIdUpdater = new WinIdUpdater(data->window);
-        winIdUpdater->setWindow(data->window);
-        data->window->installEventFilter(winIdUpdater);
-        data->winIdUpdater = winIdUpdater;
+    if (!data->eventFilter) {
+        data->eventFilter = new InternalEventFilter(data->window, data->window);
+        data->window->installEventFilter(data->eventFilter);
     }
 #if FRAMELESSHELPER_CONFIG(native_impl)
 #  ifdef Q_OS_WINDOWS
@@ -525,7 +514,6 @@ bool FramelessManager::addWindow(const QObject *window, const WId windowId)
 #else
     FramelessHelperQt::addWindow(window);
 #endif
-    connect(window, &QObject::destroyed, FramelessManager::instance(), [this, window](){ std::ignore = removeWindow(window); });
     return true;
 }
 
@@ -546,16 +534,15 @@ bool FramelessManager::removeWindow(const QObject *window)
     if (!data || !data->window || !data->windowId) {
         return false;
     }
-    if (data->winIdUpdater) {
-        data->window->removeEventFilter(data->winIdUpdater);
-        data->winIdUpdater->deleteLater();
-        data->winIdUpdater = nullptr;
+    if (data->eventFilter) {
+        data->window->removeEventFilter(data->eventFilter);
+        delete data->eventFilter;
+        data->eventFilter = nullptr;
     }
 #if FRAMELESSHELPER_CONFIG(native_impl)
 #  ifdef Q_OS_WINDOWS
     FramelessHelperWin::removeWindow(window);
     std::ignore = Utils::uninstallWindowProcHook(data->windowId);
-    std::ignore = Utils::removeMicaWindow(data->windowId);
 #  elif (defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID))
 #  elif defined(Q_OS_MACOS)
 #  else
diff --git a/src/core/utils.cpp b/src/core/utils.cpp
index 92d267d..3cf8500 100644
--- a/src/core/utils.cpp
+++ b/src/core/utils.cpp
@@ -218,12 +218,10 @@ bool Utils::moveWindowToDesktopCenter(const WId windowId, const bool considerTas
         return false;
     }
     const QObject *window = FramelessManagerPrivate::getWindow(windowId);
-    Q_ASSERT(window);
     if (!window) {
         return false;
     }
     const FramelessDataPtr data = FramelessManagerPrivate::getData(window);
-    Q_ASSERT(data);
     if (!data || !data->callbacks) {
         return false;
     }
@@ -587,7 +585,7 @@ quint32 Utils::defaultScreenDpi()
 QColor Utils::getAccentColor()
 {
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 6, 0))
-    return QGuiApplication::palette().color(QPalette::AccentColor);
+    return QGuiApplication::palette().color(QPalette::Accent);
 #else // (QT_VERSION < QT_VERSION_CHECK(6, 6, 0))
 #  ifdef Q_OS_WINDOWS
     return getAccentColor_windows();
diff --git a/src/core/utils_win.cpp b/src/core/utils_win.cpp
index 2e58a08..014d551 100644
--- a/src/core/utils_win.cpp
+++ b/src/core/utils_win.cpp
@@ -3049,29 +3049,6 @@ QRect Utils::getWindowRestoreGeometry(const WId windowId)
     return rect2qrect(wp.rcNormalPosition).translated(getWindowPlacementOffset(windowId));
 }
 
-bool Utils::removeMicaWindow(const WId windowId)
-{
-    Q_ASSERT(windowId);
-    if (!windowId) {
-        return false;
-    }
-    const QObject *window = FramelessManagerPrivate::getWindow(windowId);
-    if (!window) {
-        return false;
-    }
-    const FramelessDataPtr data = FramelessManagerPrivate::getData(window);
-    if (!data) {
-        return false;
-    }
-    const UtilsWinExtraDataPtr extraData = tryGetExtraData(data, false);
-    Q_ASSERT(extraData);
-    if (!extraData || !extraData->mica) {
-        return false;
-    }
-    extraData->mica = false;
-    return true;
-}
-
 quint64 Utils::getKeyState()
 {
     quint64 result = 0;