diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56e1a1a..63fbb6a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,6 +38,7 @@ option(FRAMELESSHELPER_BUILD_EXAMPLES "Build FramelessHelper demo applications."
 option(FRAMELESSHELPER_EXAMPLES_DEPLOYQT "Deploy the Qt framework after building the demo projects." ON)
 option(FRAMELESSHELPER_NO_DEBUG_OUTPUT "Suppress the debug messages from FramelessHelper." OFF)
 option(FRAMELESSHELPER_NO_BUNDLE_RESOURCE "Do not bundle any resources within FramelessHelper." OFF)
+option(FRAMELESSHELPER_NO_PRIVATE "Do not use any private functionalities from Qt." OFF)
 
 include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
@@ -109,6 +110,18 @@ endif()
 set(PROJECT_COMPILE_DATETIME "UNKNOWN")
 string(TIMESTAMP PROJECT_COMPILE_DATETIME UTC)
 
+if(MSVC)
+    string(REGEX REPLACE "[-|/]GR-? " " " CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+    string(REGEX REPLACE "[-|/]EHs-?c-? " " " CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+    string(APPEND CMAKE_CXX_FLAGS " /GR ")
+    string(APPEND CMAKE_CXX_FLAGS " /EHsc ")
+    set(CMAKE_RC_FLAGS "/c65001 /DWIN32 /nologo")
+    if(MSVC_VERSION GREATER_EQUAL 1920) # Visual Studio 2019 version 16.0
+        string(REGEX REPLACE "[-|/]Ob[0|1|2|3] " " " CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
+        string(APPEND CMAKE_CXX_FLAGS_RELEASE " /Ob3 ")
+    endif()
+endif()
+
 find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Core Gui)
 find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Core Gui)
 
@@ -177,4 +190,5 @@ message("Build the FramelessHelper demo applications: ${FRAMELESSHELPER_BUILD_EX
 message("Deploy Qt libraries after compilation: ${FRAMELESSHELPER_EXAMPLES_DEPLOYQT}")
 message("Suppress debug messages from FramelessHelper: ${FRAMELESSHELPER_NO_DEBUG_OUTPUT}")
 message("Do not bundle any resources within FramelessHelper: ${FRAMELESSHELPER_NO_BUNDLE_RESOURCE}")
+message("Do not use any private functionalities from Qt: ${FRAMELESSHELPER_NO_PRIVATE}")
 message("#######################################")
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index e2bc683..3777976 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -29,6 +29,6 @@ if(FRAMELESSHELPER_BUILD_WIDGETS AND TARGET Qt${QT_VERSION_MAJOR}::Widgets)
     add_subdirectory(dialog)
 endif()
 
-if(FRAMELESSHELPER_BUILD_QUICK AND TARGET Qt${QT_VERSION_MAJOR}::Quick AND ${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+if(FRAMELESSHELPER_BUILD_QUICK AND TARGET Qt${QT_VERSION_MAJOR}::Quick AND (${QT_VERSION_MAJOR} GREATER_EQUAL 6) AND (NOT FRAMELESSHELPER_NO_PRIVATE))
     add_subdirectory(quick)
 endif()
diff --git a/include/FramelessHelper/Core/framelesshelpercore_global.h b/include/FramelessHelper/Core/framelesshelpercore_global.h
index 7acdef2..4160457 100644
--- a/include/FramelessHelper/Core/framelesshelpercore_global.h
+++ b/include/FramelessHelper/Core/framelesshelpercore_global.h
@@ -374,10 +374,10 @@ Q_ENUM_NS(RegistryRootKey)
 
 enum class WindowEdge : quint32
 {
-    Left   = 0x00000000,
-    Top    = 0x00000001,
-    Right  = 0x00000002,
-    Bottom = 0x00000004
+    Left   = 0x00000001,
+    Top    = 0x00000002,
+    Right  = 0x00000004,
+    Bottom = 0x00000010
 };
 Q_ENUM_NS(WindowEdge)
 Q_DECLARE_FLAGS(WindowEdges, WindowEdge)
diff --git a/include/FramelessHelper/Core/private/registrykey_p.h b/include/FramelessHelper/Core/private/registrykey_p.h
index 9ced2c2..38f9d1e 100644
--- a/include/FramelessHelper/Core/private/registrykey_p.h
+++ b/include/FramelessHelper/Core/private/registrykey_p.h
@@ -32,11 +32,11 @@
 #endif // REGISTRYKEY_FORCE_QSETTINGS
 
 #ifndef REGISTRYKEY_IMPL
-#  if ((QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)) && !(REGISTRYKEY_FORCE_QSETTINGS))
+#  if ((QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)) && !(REGISTRYKEY_FORCE_QSETTINGS) && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
 #    define REGISTRYKEY_IMPL (1)
-#  else // ((QT_VERSION < QT_VERSION_CHECK(5, 14, 0)) || REGISTRYKEY_FORCE_QSETTINGS)
+#  else // ((QT_VERSION < QT_VERSION_CHECK(5, 14, 0)) || REGISTRYKEY_FORCE_QSETTINGS || defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
 #    define REGISTRYKEY_IMPL (2)
-#  endif // ((QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)) && !REGISTRYKEY_FORCE_QSETTINGS)
+#  endif // ((QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)) && !REGISTRYKEY_FORCE_QSETTINGS && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
 #endif // REGISTRYKEY_IMPL
 
 #ifndef REGISTRYKEY_QWINREGISTRYKEY
diff --git a/include/FramelessHelper/Core/utils.h b/include/FramelessHelper/Core/utils.h
index eff6ba2..d14663e 100644
--- a/include/FramelessHelper/Core/utils.h
+++ b/include/FramelessHelper/Core/utils.h
@@ -69,6 +69,14 @@ FRAMELESSHELPER_CORE_API void moveWindowToDesktopCenter(
 FRAMELESSHELPER_CORE_API void registerThemeChangeNotification();
 [[nodiscard]] FRAMELESSHELPER_CORE_API QColor getFrameBorderColor(const bool active);
 [[nodiscard]] FRAMELESSHELPER_CORE_API qreal roundScaleFactor(const qreal factor);
+[[nodiscard]] FRAMELESSHELPER_CORE_API int toNativePixels(const QWindow *window, const int value);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QPoint toNativePixels(const QWindow *window, const QPoint &point);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QSize toNativePixels(const QWindow *window, const QSize &size);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QRect toNativePixels(const QWindow *window, const QRect &rect);
+[[nodiscard]] FRAMELESSHELPER_CORE_API int fromNativePixels(const QWindow *window, const int value);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QPoint fromNativePixels(const QWindow *window, const QPoint &point);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QSize fromNativePixels(const QWindow *window, const QSize &size);
+[[nodiscard]] FRAMELESSHELPER_CORE_API QRect fromNativePixels(const QWindow *window, const QRect &rect);
 
 #ifdef Q_OS_WINDOWS
 [[nodiscard]] FRAMELESSHELPER_CORE_API bool isWindowsVersionOrGreater(const Global::WindowsVersion version);
@@ -109,7 +117,7 @@ FRAMELESSHELPER_CORE_API void installSystemMenuHook(
     const WId windowId,
     const Global::IsWindowFixedSizeCallback &isWindowFixedSize,
     const Global::IsInsideTitleBarDraggableAreaCallback &isInTitleBarArea,
-    const Global::GetWindowDevicePixelRatioCallback &getDevicePixelRatio);
+    const Global::GetWindowHandleCallback &getWindowHandle);
 FRAMELESSHELPER_CORE_API void uninstallSystemMenuHook(const WId windowId);
 FRAMELESSHELPER_CORE_API void setAeroSnappingEnabled(const WId windowId, const bool enable);
 FRAMELESSHELPER_CORE_API void tryToEnableHighestDpiAwarenessLevel();
diff --git a/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p.h b/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p.h
index dcd750c..7826fb2 100644
--- a/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p.h
+++ b/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #include <QtQuickTemplates2/private/qquickapplicationwindow_p.h>
 
@@ -82,3 +84,5 @@ FRAMELESSHELPER_END_NAMESPACE
 
 Q_DECLARE_METATYPE2(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickApplicationWindow))
 QML_DECLARE_TYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickApplicationWindow))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p_p.h b/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p_p.h
index c787eb7..5d57a27 100644
--- a/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p_p.h
+++ b/include/FramelessHelper/Quick/private/framelessquickapplicationwindow_p_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #include "framelessquickapplicationwindow_p.h"
 
@@ -68,3 +70,5 @@ private:
 FRAMELESSHELPER_END_NAMESPACE
 
 Q_DECLARE_METATYPE2(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickApplicationWindowPrivate))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/include/FramelessHelper/Quick/private/framelessquickwindow_p.h b/include/FramelessHelper/Quick/private/framelessquickwindow_p.h
index 2db03fd..13a469d 100644
--- a/include/FramelessHelper/Quick/private/framelessquickwindow_p.h
+++ b/include/FramelessHelper/Quick/private/framelessquickwindow_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #include <QtQuick/private/qquickwindowmodule_p.h>
 
@@ -82,3 +84,5 @@ FRAMELESSHELPER_END_NAMESPACE
 
 Q_DECLARE_METATYPE2(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickWindow))
 QML_DECLARE_TYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickWindow))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/include/FramelessHelper/Quick/private/framelessquickwindow_p_p.h b/include/FramelessHelper/Quick/private/framelessquickwindow_p_p.h
index 9ea621c..83847a4 100644
--- a/include/FramelessHelper/Quick/private/framelessquickwindow_p_p.h
+++ b/include/FramelessHelper/Quick/private/framelessquickwindow_p_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #include "framelessquickwindow_p.h"
 
@@ -68,3 +70,5 @@ private:
 FRAMELESSHELPER_END_NAMESPACE
 
 Q_DECLARE_METATYPE2(FRAMELESSHELPER_PREPEND_NAMESPACE(FramelessQuickWindowPrivate))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/include/FramelessHelper/Quick/private/quickstandardsystembutton_p.h b/include/FramelessHelper/Quick/private/quickstandardsystembutton_p.h
index c5bbe59..a8764d6 100644
--- a/include/FramelessHelper/Quick/private/quickstandardsystembutton_p.h
+++ b/include/FramelessHelper/Quick/private/quickstandardsystembutton_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include <QtQuickTemplates2/private/qquickbutton_p.h>
@@ -110,3 +112,5 @@ FRAMELESSHELPER_END_NAMESPACE
 Q_DECLARE_METATYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(QuickStandardSystemButton))
 QML_DECLARE_TYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(QuickStandardSystemButton))
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/include/FramelessHelper/Quick/private/quickstandardtitlebar_p.h b/include/FramelessHelper/Quick/private/quickstandardtitlebar_p.h
index 33cf7b7..f66ce34 100644
--- a/include/FramelessHelper/Quick/private/quickstandardtitlebar_p.h
+++ b/include/FramelessHelper/Quick/private/quickstandardtitlebar_p.h
@@ -24,6 +24,8 @@
 
 #pragma once
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelesshelperquick_global.h"
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include "quickchromepalette.h"
@@ -142,3 +144,5 @@ FRAMELESSHELPER_END_NAMESPACE
 Q_DECLARE_METATYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(QuickStandardTitleBar))
 QML_DECLARE_TYPE(FRAMELESSHELPER_PREPEND_NAMESPACE(QuickStandardTitleBar))
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 96d95ed..ce606f7 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -158,6 +158,12 @@ if(FRAMELESSHELPER_NO_BUNDLE_RESOURCE)
     )
 endif()
 
+if(FRAMELESSHELPER_NO_PRIVATE)
+    target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
+        FRAMELESSHELPER_CORE_NO_PRIVATE
+    )
+endif()
+
 target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
     QT_NO_KEYWORDS
     FRAMELESSHELPER_CORE_LIBRARY
@@ -182,10 +188,17 @@ elseif(UNIX)
     )
 endif()
 
-target_link_libraries(${SUB_PROJ_NAME} PRIVATE
-    Qt${QT_VERSION_MAJOR}::CorePrivate
-    Qt${QT_VERSION_MAJOR}::GuiPrivate
-)
+if(FRAMELESSHELPER_NO_PRIVATE)
+    target_link_libraries(${SUB_PROJ_NAME} PRIVATE
+        Qt${QT_VERSION_MAJOR}::Core
+        Qt${QT_VERSION_MAJOR}::Gui
+    )
+else()
+    target_link_libraries(${SUB_PROJ_NAME} PRIVATE
+        Qt${QT_VERSION_MAJOR}::CorePrivate
+        Qt${QT_VERSION_MAJOR}::GuiPrivate
+    )
+endif()
 
 target_include_directories(${SUB_PROJ_NAME} PUBLIC
     "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/${INCLUDE_PREFIX}>"
diff --git a/src/core/cmakehelper.cmake b/src/core/cmakehelper.cmake
index 9635390..fb4f540 100644
--- a/src/core/cmakehelper.cmake
+++ b/src/core/cmakehelper.cmake
@@ -59,19 +59,88 @@ function(setup_compile_params arg_target)
             WIN32_LEAN_AND_MEAN WINRT_LEAN_AND_MEAN
         )
         target_compile_options(${arg_target} PRIVATE
-            /options:strict # Don't allow unknown parameters.
-            /permissive- # Make sure we always write standard code.
-            /utf-8
-            /Zc:__cplusplus # Make sure we use the correct C++ standard.
-            /W3 # Can't use /W4 here, Qt's own headers are not warning-clean, especially QtQuick headers. /W4 will trigger too many warnings.
-            /WX # Make sure we don't ignore any warnings.
-            $<$<CONFIG:Debug>:/JMC>
-            $<$<NOT:$<CONFIG:Debug>>:/guard:cf /Gw /Gy /QIntel-jcc-erratum /Zc:inline> # /guard:ehcont? /Qspectre-load?
+            /bigobj /utf-8 $<$<NOT:$<CONFIG:Debug>>:/fp:fast /GT /Gw /Gy /guard:cf /Zc:inline> # /GA for executables.
+            /sdl /Zc:auto /Zc:forScope /Zc:implicitNoexcept /Zc:noexceptTypes /Zc:referenceBinding
+            /Zc:rvalueCast /Zc:sizedDealloc /Zc:strictStrings /Zc:throwingNew /Zc:trigraphs
+            /Zc:wchar_t
         )
         target_link_options(${arg_target} PRIVATE
-            /WX # Don't allow unknown parameters.
-            $<$<NOT:$<CONFIG:Debug>>:/CETCOMPAT /GUARD:CF /OPT:REF /OPT:ICF> # /GUARD:EHCONT?
+            $<$<NOT:$<CONFIG:Debug>>:/OPT:REF /OPT:ICF /OPT:LBR /GUARD:CF>
+            /DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /WX # /TSAWARE for executables.
         )
+        if(CMAKE_SIZEOF_VOID_P EQUAL 4)
+            target_link_options(${arg_target} PRIVATE /SAFESEH)
+        endif()
+        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+            target_link_options(${arg_target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:/HIGHENTROPYVA>)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1900) # Visual Studio 2015
+            target_compile_options(${arg_target} PRIVATE /Zc:threadSafeInit)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1910) # Visual Studio 2017 version 15.0
+            target_compile_options(${arg_target} PRIVATE /permissive- /Zc:ternary)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1912) # Visual Studio 2017 version 15.5
+            target_compile_options(${arg_target} PRIVATE /Zc:alignedNew)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1913) # Visual Studio 2017 version 15.6
+            target_compile_options(${arg_target} PRIVATE /Zc:externConstexpr)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1914) # Visual Studio 2017 version 15.7
+            target_compile_options(${arg_target} PRIVATE /Zc:__cplusplus)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1915) # Visual Studio 2017 version 15.8
+            target_compile_options(${arg_target} PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:/JMC>)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1920) # Visual Studio 2019 version 16.0
+            target_link_options(${arg_target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:/CETCOMPAT>)
+            if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+                target_compile_options(${arg_target} PRIVATE /d2FH4)
+            endif()
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1921) # Visual Studio 2019 version 16.1
+            target_compile_options(${arg_target} PRIVATE /Zc:char8_t)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1923) # Visual Studio 2019 version 16.3
+            target_compile_options(${arg_target} PRIVATE /Zc:externC)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1924) # Visual Studio 2019 version 16.4
+            target_compile_options(${arg_target} PRIVATE /Zc:hiddenFriend)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1925) # Visual Studio 2019 version 16.5
+            target_compile_options(${arg_target} PRIVATE
+                /Zc:preprocessor /Zc:tlsGuards $<$<NOT:$<CONFIG:Debug>>:/QIntel-jcc-erratum> # /Qspectre-load ?
+            )
+        #elseif(MSVC_VERSION GREATER_EQUAL 1912) # Visual Studio 2017 version 15.5
+        #    target_compile_options(${arg_target} PRIVATE /Qspectre)
+        endif()
+        #[[if((MSVC_VERSION GREATER_EQUAL 1927) AND (CMAKE_SIZEOF_VOID_P EQUAL 8)) # Visual Studio 2019 version 16.7
+            target_compile_options(${arg_target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:/guard:ehcont>)
+            target_link_options(${arg_target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:/guard:ehcont>)
+        endif()]]
+        if(MSVC_VERSION GREATER_EQUAL 1928) # Visual Studio 2019 version 16.8 & 16.9
+            target_compile_options(${arg_target} PRIVATE /Zc:lambda /Zc:zeroSizeArrayNew)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1929) # Visual Studio 2019 version 16.10
+            target_compile_options(${arg_target} PRIVATE /await:strict)
+        elseif(MSVC_VERSION GREATER_EQUAL 1900) # Visual Studio 2015
+            target_compile_options(${arg_target} PRIVATE /await)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1930) # Visual Studio 2022 version 17.0
+            target_compile_options(${arg_target} PRIVATE /options:strict)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1931) # Visual Studio 2022 version 17.1
+            target_compile_options(${arg_target} PRIVATE /Zc:static_assert)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1932) # Visual Studio 2022 version 17.2
+            target_compile_options(${arg_target} PRIVATE /Zc:__STDC__)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1934) # Visual Studio 2022 version 17.4
+            target_compile_options(${arg_target} PRIVATE /Zc:enumTypes /Zc:gotoScope /Zc:nrvo)
+        endif()
+        if(MSVC_VERSION GREATER_EQUAL 1935) # Visual Studio 2022 version 17.5
+            target_compile_options(${arg_target} PRIVATE /Zc:templateScope)
+        endif()
     else()
         target_compile_options(${arg_target} PRIVATE
             -Wall -Wextra -Werror
@@ -86,18 +155,6 @@ function(setup_compile_params arg_target)
                 $<$<NOT:$<CONFIG:Debug>>:-Wl,--gc-sections>
             )
         endif()
-        #[[if(CLANG)
-            target_compile_options(${arg_target} PRIVATE
-                $<$<NOT:$<CONFIG:Debug>>:-Xclang -cfguard -mretpoline>
-            )
-            target_link_options(${arg_target} PRIVATE
-                $<$<NOT:$<CONFIG:Debug>>:-Wl,-Xlink,-guard:cf -z retpolineplt -z now>
-            )
-        else() # GCC
-            target_compile_options(${arg_target} PRIVATE
-                $<$<NOT:$<CONFIG:Debug>>:-mindirect-branch=thunk -mfunction-return=thunk -mindirect-branch-register -mindirect-branch-cs-prefix>
-            )
-        endif()]]
     endif()
 endfunction()
 
diff --git a/src/core/framelesshelper_win.cpp b/src/core/framelesshelper_win.cpp
index 38c6ffe..9e9c1af 100644
--- a/src/core/framelesshelper_win.cpp
+++ b/src/core/framelesshelper_win.cpp
@@ -200,8 +200,8 @@ Q_GLOBAL_STATIC(Win32Helper, g_win32Helper)
             WARNING << Utils::getSystemErrorMessage(kScreenToClient);
             break;
         }
-        const qreal devicePixelRatio = data.params.getWindowDevicePixelRatio();
-        const QPoint qtScenePos = QPointF(QPointF(qreal(nativeLocalPos.x), qreal(nativeLocalPos.y)) / devicePixelRatio).toPoint();
+        const QPoint qtScenePos = Utils::fromNativePixels(data.params.getWindowHandle(),
+            QPoint(nativeLocalPos.x, nativeLocalPos.y));
         SystemButtonType buttonType = SystemButtonType::Unknown;
         if (data.params.isInsideSystemButtons(qtScenePos, &buttonType)) {
             switch (buttonType) {
@@ -989,8 +989,8 @@ bool FramelessHelperWin::nativeEventFilter(const QByteArray &eventType, void *me
             WARNING << Utils::getSystemErrorMessage(kScreenToClient);
             break;
         }
-        const qreal dpr = data.params.getWindowDevicePixelRatio();
-        const QPoint qtScenePos = QPointF(QPointF(qreal(nativeLocalPos.x), qreal(nativeLocalPos.y)) / dpr).toPoint();
+        const QPoint qtScenePos = Utils::fromNativePixels(data.params.getWindowHandle(),
+             QPoint(nativeLocalPos.x, nativeLocalPos.y));
         const bool max = IsMaximized(hWnd);
         const bool full = Utils::isFullScreen(windowId);
         const int frameSizeY = Utils::getResizeBorderThickness(windowId, false, true);
@@ -1125,11 +1125,11 @@ bool FramelessHelperWin::nativeEventFilter(const QByteArray &eventType, void *me
         windowPos->flags |= SWP_NOCOPYBITS;
     } break;
 #endif
-#if ((QT_VERSION <= QT_VERSION_CHECK(6, 2, 6)) || ((QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)) && (QT_VERSION <= QT_VERSION_CHECK(6, 4, 1))))
+#if ((QT_VERSION <= QT_VERSION_CHECK(6, 2, 7)) || ((QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)) && (QT_VERSION <= QT_VERSION_CHECK(6, 4, 2))))
     case WM_GETDPISCALEDSIZE: {
         // QtBase commit 2cfca7fd1911cc82a22763152c04c65bc05bc19a introduced a bug
         // which caused the custom margins is ignored during the handling of the
-        // WM_GETDPISCALEDSIZE message, it was shipped with Qt 6.2.1 ~ 6.2.6 & 6.3 ~ 6.4.1.
+        // WM_GETDPISCALEDSIZE message, it was shipped with Qt 6.2.1 ~ 6.2.7 & 6.3 ~ 6.4.2.
         // We workaround it by overriding the wrong handling directly.
         RECT clientRect = {};
         if (GetClientRect(hWnd, &clientRect) == FALSE) {
@@ -1162,14 +1162,14 @@ bool FramelessHelperWin::nativeEventFilter(const QByteArray &eventType, void *me
         *result = TRUE; // We have set our preferred window size, don't use the default linear DPI scaling.
         return true; // Jump over Qt's wrong handling logic.
     }
-#endif
+#endif // ((QT_VERSION <= QT_VERSION_CHECK(6, 2, 7)) || ((QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)) && (QT_VERSION <= QT_VERSION_CHECK(6, 4, 2))))
     case WM_DPICHANGED: {
         const Dpi dpi = {UINT(LOWORD(wParam)), UINT(HIWORD(wParam))};
         DEBUG.noquote() << "New DPI for window" << hwnd2str(hWnd) << "is" << dpi;
         g_win32Helper()->mutex.lock();
         g_win32Helper()->data[windowId].dpi = dpi;
         g_win32Helper()->mutex.unlock();
-#if (QT_VERSION <= QT_VERSION_CHECK(6, 4, 1))
+#if (QT_VERSION <= QT_VERSION_CHECK(6, 4, 2))
         // We need to wait until Qt has handled this message, otherwise everything
         // we have done here will always be overwritten.
         QTimer::singleShot(0, qApp, [data](){ // Copy the variables intentionally, otherwise they'll go out of scope when Qt finally use them.
@@ -1177,7 +1177,7 @@ bool FramelessHelperWin::nativeEventFilter(const QByteArray &eventType, void *me
             // we will get wrong window sizes after the DPI change.
             Utils::updateInternalWindowFrameMargins(data.params.getWindowHandle(), true);
         });
-#endif // (QT_VERSION <= QT_VERSION_CHECK(6, 4, 1))
+#endif // (QT_VERSION <= QT_VERSION_CHECK(6, 4, 2))
     } break;
     case WM_DWMCOMPOSITIONCHANGED: {
         // Re-apply the custom window frame if recovered from the basic theme.
diff --git a/src/core/framelessmanager.cpp b/src/core/framelessmanager.cpp
index d2ddfe9..64a55ef 100644
--- a/src/core/framelessmanager.cpp
+++ b/src/core/framelessmanager.cpp
@@ -220,7 +220,7 @@ void FramelessManagerPrivate::addWindow(const SystemParameters &params)
         FramelessHelperWin::addWindow(params);
     }
     Utils::installSystemMenuHook(windowId, params.isWindowFixedSize,
-        params.isInsideTitleBarDraggableArea, params.getWindowDevicePixelRatio);
+        params.isInsideTitleBarDraggableArea, params.getWindowHandle);
 #endif
 }
 
diff --git a/src/core/micamaterial.cpp b/src/core/micamaterial.cpp
index aa5475b..9a0a174 100644
--- a/src/core/micamaterial.cpp
+++ b/src/core/micamaterial.cpp
@@ -34,8 +34,10 @@
 #include <QtGui/qpainter.h>
 #include <QtGui/qscreen.h>
 #include <QtGui/qguiapplication.h>
-#include <QtGui/private/qguiapplication_p.h>
-#include <QtGui/private/qmemrotate_p.h>
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  include <QtGui/private/qguiapplication_p.h>
+#  include <QtGui/private/qmemrotate_p.h>
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 
 #ifndef FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
 // The "Q_INIT_RESOURCE()" macro can't be used within a namespace,
@@ -66,11 +68,11 @@ Q_LOGGING_CATEGORY(lcMicaMaterial, "wangwenx190.framelesshelper.core.micamateria
 
 using namespace Global;
 
-static constexpr const qreal kDefaultTintOpacity = 0.7;
-static constexpr const qreal kDefaultNoiseOpacity = 0.04;
-static constexpr const qreal kDefaultBlurRadius = 128.0;
+[[maybe_unused]] static constexpr const qreal kDefaultTintOpacity = 0.7;
+[[maybe_unused]] static constexpr const qreal kDefaultNoiseOpacity = 0.04;
+[[maybe_unused]] static constexpr const qreal kDefaultBlurRadius = 128.0;
 
-static Q_CONSTEXPR2 const QColor kDefaultSystemLightColor2 = {243, 243, 243}; // #F3F3F3
+[[maybe_unused]] static Q_CONSTEXPR2 const QColor kDefaultSystemLightColor2 = {243, 243, 243}; // #F3F3F3
 
 #ifndef FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
 FRAMELESSHELPER_STRING_CONSTANT2(NoiseImageFilePath, ":/org.wangwenx190.FramelessHelper/resources/images/noise.png")
@@ -85,6 +87,14 @@ struct MicaMaterialData
 
 Q_GLOBAL_STATIC(MicaMaterialData, g_micaMaterialData)
 
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+[[nodiscard]] static inline Qt::Alignment visualAlignment
+    (const Qt::LayoutDirection direction, const Qt::Alignment alignment)
+{
+    Q_UNUSED(direction);
+    return alignment;
+}
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
 template<const int shift>
 [[nodiscard]] static inline int qt_static_shift(const int value)
 {
@@ -437,6 +447,7 @@ static inline void expblur(QImage &img, qreal radius, const bool improvedQuality
 {
     return QGuiApplicationPrivate::visualAlignment(direction, alignment);
 }
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 
 /*!
     Returns a new rectangle of the specified \a size that is aligned to the given
@@ -554,11 +565,11 @@ void MicaMaterialPrivate::maybeGenerateBlurredWallpaper(const bool force)
     QPainter painter(&g_micaMaterialData()->blurredWallpaper);
     painter.setRenderHints(QPainter::Antialiasing |
         QPainter::TextAntialiasing | QPainter::SmoothPixmapTransform);
-#if 1
-    qt_blurImage(&painter, buffer, kDefaultBlurRadius, true, false);
-#else
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
     painter.drawImage(desktopOriginPoint, buffer);
-#endif
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    qt_blurImage(&painter, buffer, kDefaultBlurRadius, true, false);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
     g_micaMaterialData()->mutex.unlock();
     Q_Q(MicaMaterial);
     Q_EMIT q->shouldRedraw();
@@ -569,6 +580,7 @@ void MicaMaterialPrivate::updateMaterialBrush()
 #ifndef FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
     initResource();
     static const QImage noiseTexture = QImage(kNoiseImageFilePath);
+#endif // FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
     QImage micaTexture = QImage(QSize(64, 64), QImage::Format_ARGB32_Premultiplied);
     QColor fillColor = (Utils::shouldAppsUseDarkMode() ? kDefaultSystemDarkColor : kDefaultSystemLightColor2);
     fillColor.setAlphaF(0.9f);
@@ -580,13 +592,14 @@ void MicaMaterialPrivate::updateMaterialBrush()
     const QRect rect = {QPoint(0, 0), micaTexture.size()};
     painter.fillRect(rect, tintColor);
     painter.setOpacity(noiseOpacity);
+#ifndef FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
     painter.fillRect(rect, QBrush(noiseTexture));
+#endif // FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
     micaBrush = QBrush(micaTexture);
     if (initialized) {
         Q_Q(MicaMaterial);
         Q_EMIT q->shouldRedraw();
     }
-#endif // FRAMELESSHELPER_CORE_NO_BUNDLE_RESOURCE
 }
 
 void MicaMaterialPrivate::paint(QPainter *painter, const QSize &size, const QPoint &pos)
diff --git a/src/core/sysapiloader.cpp b/src/core/sysapiloader.cpp
index 11f7a55..5991785 100644
--- a/src/core/sysapiloader.cpp
+++ b/src/core/sysapiloader.cpp
@@ -23,13 +23,35 @@
  */
 
 #include "sysapiloader_p.h"
+
+#ifndef SYSAPILOADER_FORCE_QLIBRARY
+#  define SYSAPILOADER_FORCE_QLIBRARY (0)
+#endif // SYSAPILOADER_FORCE_QLIBRARY
+
+#ifndef SYSAPILOADER_IMPL
+#  if (defined(Q_OS_WINDOWS) && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
+#    define SYSAPILOADER_IMPL (1)
+#  else // (!Q_OS_WINDOWS || FRAMELESSHELPER_CORE_NO_PRIVATE)
+#    define SYSAPILOADER_IMPL (2)
+#  endif // (defined(Q_OS_WINDOWS) && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
+#endif // SYSAPILOADER_IMPL
+
+#ifndef SYSAPILOADER_QSYSTEMLIBRARY
+#  define SYSAPILOADER_QSYSTEMLIBRARY ((SYSAPILOADER_IMPL) == 1)
+#endif // SYSAPILOADER_QSYSTEMLIBRARY
+
+#ifndef SYSAPILOADER_QLIBRARY
+#  define SYSAPILOADER_QLIBRARY ((SYSAPILOADER_IMPL) == 2)
+#endif // SYSAPILOADER_QLIBRARY
+
 #include <QtCore/qhash.h>
 #include <QtCore/qmutex.h>
-#ifdef Q_OS_WINDOWS
+#if SYSAPILOADER_QSYSTEMLIBRARY
 #  include <QtCore/private/qsystemlibrary_p.h>
-#else
+#endif // SYSAPILOADER_QSYSTEMLIBRARY
+#if SYSAPILOADER_QLIBRARY
 #  include <QtCore/qlibrary.h>
-#endif
+#endif // SYSAPILOADER_QLIBRARY
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
@@ -75,11 +97,12 @@ QFunctionPointer SysApiLoader::resolve(const QString &library, const char *funct
     if (library.isEmpty() || !function) {
         return nullptr;
     }
-#ifdef Q_OS_WINDOWS
+#if SYSAPILOADER_QSYSTEMLIBRARY
     return QSystemLibrary::resolve(library, function);
-#else
+#endif // SYSAPILOADER_QSYSTEMLIBRARY
+#if SYSAPILOADER_QLIBRARY
     return QLibrary::resolve(library, function);
-#endif
+#endif // SYSAPILOADER_QLIBRARY
 }
 
 QFunctionPointer SysApiLoader::resolve(const QString &library, const QByteArray &function)
diff --git a/src/core/utils.cpp b/src/core/utils.cpp
index 84dcd31..ffecfef 100644
--- a/src/core/utils.cpp
+++ b/src/core/utils.cpp
@@ -25,16 +25,19 @@
 #include "utils.h"
 #ifdef Q_OS_WINDOWS
 #  include "winverhelper_p.h"
-#endif
+#endif // Q_OS_WINDOWS
 #include <QtGui/qwindow.h>
 #include <QtGui/qscreen.h>
 #include <QtGui/qguiapplication.h>
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  include <QtGui/private/qhighdpiscaling_p.h>
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
 #  include <QtGui/qstylehints.h>
-#elif (QT_VERSION >= QT_VERSION_CHECK(6, 2, 1))
+#elif ((QT_VERSION >= QT_VERSION_CHECK(6, 2, 1)) && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
 #  include <QtGui/qpa/qplatformtheme.h>
 #  include <QtGui/private/qguiapplication_p.h>
-#endif
+#endif // (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
@@ -209,8 +212,8 @@ void Utils::moveWindowToDesktopCenter(const GetWindowScreenCallback &getWindowSc
     if (!screen) {
         return;
     }
-    const QSize screenSize = (considerTaskBar ? screen->availableSize() : screen->size());
-    const QPoint offset = (considerTaskBar ? screen->availableGeometry().topLeft() : QPoint(0, 0));
+    const QSize screenSize = (considerTaskBar ? screen->availableVirtualSize() : screen->virtualSize());
+    const QPoint offset = (considerTaskBar ? screen->availableVirtualGeometry().topLeft() : QPoint(0, 0));
     const int newX = qRound(qreal(screenSize.width() - windowSize.width()) / 2.0);
     const int newY = qRound(qreal(screenSize.height() - windowSize.height()) / 2.0);
     setWindowPosition(QPoint(newX + offset.x(), newY + offset.y()));
@@ -282,12 +285,12 @@ bool Utils::shouldAppsUseDarkMode()
 {
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
     return (QGuiApplication::styleHints()->appearance() == Qt::Appearance::Dark);
-#elif (QT_VERSION >= QT_VERSION_CHECK(6, 2, 1))
+#elif ((QT_VERSION >= QT_VERSION_CHECK(6, 2, 1)) && !defined(FRAMELESSHELPER_CORE_NO_PRIVATE))
     if (const QPlatformTheme * const theme = QGuiApplicationPrivate::platformTheme()) {
         return (theme->appearance() == QPlatformTheme::Appearance::Dark);
     }
     return false;
-#else
+#else // ((QT_VERSION < QT_VERSION_CHECK(6, 2, 1)) || FRAMELESSHELPER_CORE_NO_PRIVATE)
 #  ifdef Q_OS_WINDOWS
     return shouldAppsUseDarkMode_windows();
 #  elif defined(Q_OS_LINUX)
@@ -306,15 +309,16 @@ qreal Utils::roundScaleFactor(const qreal factor)
     if (factor <= 0) {
         return 1;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
     static const auto policy = QGuiApplication::highDpiScaleFactorRoundingPolicy();
     switch (policy) {
     case Qt::HighDpiScaleFactorRoundingPolicy::Unset:
-#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
         return factor;
-#  else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#    else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
         return qRound(factor);
-#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     case Qt::HighDpiScaleFactorRoundingPolicy::Round:
         return qRound(factor);
     case Qt::HighDpiScaleFactorRoundingPolicy::Ceil:
@@ -327,9 +331,116 @@ qreal Utils::roundScaleFactor(const qreal factor)
         return factor;
     }
     return 1;
-#else // (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
+#  else // (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
     return qRound(factor);
-#endif // (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpiScaling::roundScaleFactor(factor);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+int Utils::toNativePixels(const QWindow *window, const int value)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return 0;
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return qRound(qreal(value) * window->devicePixelRatio());
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::toNativePixels(value, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QPoint Utils::toNativePixels(const QWindow *window, const QPoint &point)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QPointF(QPointF(point) * window->devicePixelRatio()).toPoint();
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::toNativePixels(point, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QSize Utils::toNativePixels(const QWindow *window, const QSize &size)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QSizeF(QSizeF(size) * window->devicePixelRatio()).toSize();
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::toNativePixels(size, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QRect Utils::toNativePixels(const QWindow *window, const QRect &rect)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QRect(toNativePixels(window, rect.topLeft()), toNativePixels(window, rect.size()));
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::toNativePixels(rect, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+int Utils::fromNativePixels(const QWindow *window, const int value)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return 0;
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return qRound(qreal(value) / window->devicePixelRatio());
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::fromNativePixels(value, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QPoint Utils::fromNativePixels(const QWindow *window, const QPoint &point)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QPointF(QPointF(point) / window->devicePixelRatio()).toPoint();
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::fromNativePixels(point, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QSize Utils::fromNativePixels(const QWindow *window, const QSize &size)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QSizeF(QSizeF(size) / window->devicePixelRatio()).toSize();
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::fromNativePixels(size, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
+}
+
+QRect Utils::fromNativePixels(const QWindow *window, const QRect &rect)
+{
+    Q_ASSERT(window);
+    if (!window) {
+        return {};
+    }
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QRect(fromNativePixels(window, rect.topLeft()), fromNativePixels(window, rect.size()));
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+    return QHighDpi::fromNativePixels(rect, window);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 FRAMELESSHELPER_END_NAMESPACE
diff --git a/src/core/utils_linux.cpp b/src/core/utils_linux.cpp
index e1529d4..dd51387 100644
--- a/src/core/utils_linux.cpp
+++ b/src/core/utils_linux.cpp
@@ -29,14 +29,16 @@
 #include <QtGui/qwindow.h>
 #include <QtGui/qscreen.h>
 #include <QtGui/qguiapplication.h>
-#include <QtGui/qpa/qplatformnativeinterface.h>
-#include <QtGui/qpa/qplatformwindow.h>
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-#  include <QtGui/qpa/qplatformscreen_p.h>
-#  include <QtGui/qpa/qplatformscreen.h>
-#else
-#  include <QtPlatformHeaders/qxcbscreenfunctions.h>
-#endif
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  include <QtGui/qpa/qplatformnativeinterface.h>
+#  include <QtGui/qpa/qplatformwindow.h>
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/qpa/qplatformscreen_p.h>
+#    include <QtGui/qpa/qplatformscreen.h>
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#    include <QtPlatformHeaders/qxcbscreenfunctions.h>
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 #include <gtk/gtk.h>
 #include <xcb/xcb.h>
 
@@ -155,6 +157,10 @@ template<typename T>
 [[maybe_unused]] [[nodiscard]] static inline
     QScreen *x11_findScreenForVirtualDesktop(const int virtualDesktopNumber)
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    Q_UNUSED(virtualDesktopNumber);
+    return QGuiApplication::primaryScreen();
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (virtualDesktopNumber == -1) {
         return QGuiApplication::primaryScreen();
     }
@@ -163,28 +169,33 @@ template<typename T>
         return nullptr;
     }
     for (auto &&screen : qAsConst(screens)) {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
         const auto qxcbScreen = dynamic_cast<QNativeInterface::Private::QXcbScreen *>(screen->handle());
         if (qxcbScreen && (qxcbScreen->virtualDesktopNumber() == virtualDesktopNumber)) {
             return screen;
         }
-#else
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
         if (QXcbScreenFunctions::virtualDesktopNumber(screen) == virtualDesktopNumber) {
             return screen;
         }
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     }
     return nullptr;
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 #if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
 [[maybe_unused]] [[nodiscard]] static inline
     unsigned long x11_appRootWindow(const int screen)
-#else
+#else // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 [[maybe_unused]] [[nodiscard]] static inline
     quint32 x11_appRootWindow(const int screen)
-#endif
+#endif // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    Q_UNUSED(screen);
+    return 0;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return 0;
     }
@@ -197,10 +208,14 @@ template<typename T>
         return 0;
     }
     return static_cast<xcb_window_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen(krootwindow, scr)));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline int x11_appScreen()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return 0;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return 0;
     }
@@ -209,10 +224,14 @@ template<typename T>
         return 0;
     }
     return reinterpret_cast<qintptr>(native->nativeResourceForIntegration(kx11screen));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline quint32 x11_appTime()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return 0;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return 0;
     }
@@ -225,10 +244,14 @@ template<typename T>
         return 0;
     }
     return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen(kapptime, screen)));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline quint32 x11_appUserTime()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return 0;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return 0;
     }
@@ -241,10 +264,14 @@ template<typename T>
         return 0;
     }
     return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen(kappusertime, screen)));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline quint32 x11_getTimestamp()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return 0;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return 0;
     }
@@ -257,10 +284,14 @@ template<typename T>
         return 0;
     }
     return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen(kgettimestamp, screen)));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline QByteArray x11_nextStartupId()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return {};
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return {};
     }
@@ -269,48 +300,57 @@ template<typename T>
         return {};
     }
     return static_cast<char *>(native->nativeResourceForIntegration(kstartupid));
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline Display *x11_display()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return nullptr;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return nullptr;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
-    using namespace QNativeInterface;
-    const auto native = qApp->nativeInterface<QX11Application>();
-#else
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+    using App = QNativeInterface::QX11Application;
+    const auto native = qApp->nativeInterface<App>();
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 2, 0))
     const auto native = qApp->platformNativeInterface();
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
     if (!native) {
         return nullptr;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
     return native->display();
-#else
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 2, 0))
     return reinterpret_cast<Display *>(native->nativeResourceForIntegration(kdisplay));
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[maybe_unused]] [[nodiscard]] static inline xcb_connection_t *x11_connection()
 {
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    return nullptr;
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     if (!qApp) {
         return nullptr;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
-    using namespace QNativeInterface;
-    const auto native = qApp->nativeInterface<QX11Application>();
-#else
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+    using App = QNativeInterface::QX11Application;
+    const auto native = qApp->nativeInterface<App>();
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 2, 0))
     const auto native = qApp->platformNativeInterface();
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
     if (!native) {
         return nullptr;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
     return native->connection();
-#else
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 2, 0))
     return reinterpret_cast<xcb_connection_t *>(native->nativeResourceForIntegration(kconnection));
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 2, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 static inline void
@@ -387,11 +427,10 @@ static inline void
     if (!window) {
         return;
     }
-    const qreal dpr = window->devicePixelRatio();
-    const QPoint deviceGlobalPos = QPointF(QPointF(globalPos) * dpr).toPoint();
+    const QPoint nativeGlobalPos = Utils::toNativePixels(window, globalPos);
     const QPoint logicalLocalPos = window->mapFromGlobal(globalPos);
-    const QPoint deviceLocalPos = QPointF(QPointF(logicalLocalPos) * dpr).toPoint();
-    emulateMouseButtonRelease(window->winId(), deviceGlobalPos, deviceLocalPos);
+    const QPoint nativeLocalPos = Utils::toNativePixels(window, logicalLocalPos);
+    emulateMouseButtonRelease(window->winId(), nativeGlobalPos, nativeLocalPos);
 }
 
 SystemTheme Utils::getSystemTheme()
@@ -415,8 +454,8 @@ void Utils::startSystemMove(QWindow *window, const QPoint &globalPos)
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
     window->startSystemMove();
 #else
-    const QPoint deviceGlobalPos = QPointF(QPointF(globalPos) * window->devicePixelRatio()).toPoint();
-    doStartSystemMoveResize(window->winId(), deviceGlobalPos, _NET_WM_MOVERESIZE_MOVE);
+    const QPoint nativeGlobalPos = Utils::toNativePixels(window, globalPos);
+    doStartSystemMoveResize(window->winId(), nativeGlobalPos, _NET_WM_MOVERESIZE_MOVE);
 #endif
 }
 
@@ -442,8 +481,8 @@ void Utils::startSystemResize(QWindow *window, const Qt::Edges edges, const QPoi
     if (section < 0) {
         return;
     }
-    const QPoint deviceGlobalPos = QPointF(QPointF(globalPos) * window->devicePixelRatio()).toPoint();
-    doStartSystemMoveResize(window->winId(), deviceGlobalPos, section);
+    const QPoint nativeGlobalPos = Utils::toNativePixels(window, globalPos);
+    doStartSystemMoveResize(window->winId(), nativeGlobalPos, section);
 #endif
 }
 
diff --git a/src/core/utils_win.cpp b/src/core/utils_win.cpp
index 7ee93ed..66efac1 100644
--- a/src/core/utils_win.cpp
+++ b/src/core/utils_win.cpp
@@ -25,17 +25,20 @@
 #include "utils.h"
 #include <QtCore/qmutex.h>
 #include <QtCore/qhash.h>
-#include <QtCore/private/qsystemerror_p.h>
+#include <QtGui/qwindow.h>
 #include <QtGui/qguiapplication.h>
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-#  include <QtGui/private/qguiapplication_p.h>
-#endif
-#include <QtGui/qpa/qplatformwindow.h>
-#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
-#  include <QtGui/qpa/qplatformnativeinterface.h>
-#else
-#  include <QtGui/qpa/qplatformwindow_p.h>
-#endif
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  include <QtCore/private/qsystemerror_p.h>
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/private/qguiapplication_p.h>
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#  include <QtGui/qpa/qplatformwindow.h>
+#  if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/qpa/qplatformnativeinterface.h>
+#  else // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/qpa/qplatformwindow_p.h>
+#  endif // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 #include "framelessmanager.h"
 #include "framelesshelper_windows.h"
 #include "framelessconfig_p.h"
@@ -810,7 +813,7 @@ struct Win32UtilsHelperData
     WNDPROC originalWindowProc = nullptr;
     IsWindowFixedSizeCallback isWindowFixedSize = nullptr;
     IsInsideTitleBarDraggableAreaCallback isInTitleBarArea = nullptr;
-    GetWindowDevicePixelRatioCallback getDevicePixelRatio = nullptr;
+    GetWindowHandleCallback getWindowHandle = nullptr;
 };
 
 struct Win32UtilsHelper
@@ -925,21 +928,20 @@ struct SYSTEM_METRIC
     if (code == ERROR_SUCCESS) {
         return kSuccessMessageText;
     }
-    static constexpr const bool flag = false;
-    if (flag) {
-        // The following code works well, we commented it out just because we want to use as many Qt functionalities as possible.
-        LPWSTR buf = nullptr;
-        if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-                           nullptr, code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), reinterpret_cast<LPWSTR>(&buf), 0, nullptr) == 0) {
-            return kEmptyMessageText;
-        }
-        const QString errorText = QString::fromWCharArray(buf).trimmed();
-        LocalFree(buf);
-        buf = nullptr;
-        return kErrorMessageTemplate.arg(function, QString::number(code), errorText);
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    LPWSTR buf = nullptr;
+    if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+                       nullptr, code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), reinterpret_cast<LPWSTR>(&buf), 0, nullptr) == 0) {
+        return kEmptyMessageText;
     }
+    const QString errorText = QString::fromWCharArray(buf).trimmed();
+    LocalFree(buf);
+    buf = nullptr;
+    return kErrorMessageTemplate.arg(function, QString::number(code), errorText);
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
     const QString errorText = QSystemError::windowsString(code);
     return kErrorMessageTemplate.arg(function, QString::number(code), errorText);
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 [[nodiscard]] static inline QString __getSystemErrorMessage(const QString &function, const HRESULT hr)
@@ -1004,12 +1006,12 @@ static inline void moveWindowToMonitor(const HWND hwnd, const MONITORINFOEXW &ac
         WARNING << Utils::getSystemErrorMessage(kGetWindowRect);
         return;
     }
-    const int currentWindowWidth = currentWindowRect.right - currentWindowRect.left;
-    const int currentWindowHeight = currentWindowRect.bottom - currentWindowRect.top;
+    const int currentWindowWidth = (currentWindowRect.right - currentWindowRect.left);
+    const int currentWindowHeight = (currentWindowRect.bottom - currentWindowRect.top);
     const int currentWindowOffsetX = (currentWindowRect.left - currentMonitorRect.left);
     const int currentWindowOffsetY = (currentWindowRect.top - currentMonitorRect.top);
-    const int newWindowX = activeMonitorRect.left + currentWindowOffsetX;
-    const int newWindowY = activeMonitorRect.top + currentWindowOffsetY;
+    const int newWindowX = (activeMonitorRect.left + currentWindowOffsetX);
+    const int newWindowY = (activeMonitorRect.top + currentWindowOffsetY);
     static constexpr const UINT flags =
         (SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOOWNERZORDER);
     if (SetWindowPos(hwnd, nullptr, newWindowX, newWindowY,
@@ -1134,8 +1136,7 @@ static inline void moveWindowToMonitor(const HWND hwnd, const MONITORINFOEXW &ac
     switch (uMsg) {
     case WM_RBUTTONUP: {
         const QPoint nativeLocalPos = getNativePosFromMouse();
-        const qreal dpr = data.getDevicePixelRatio();
-        const QPoint qtScenePos = QPointF(QPointF(nativeLocalPos) / dpr).toPoint();
+        const QPoint qtScenePos = Utils::fromNativePixels(data.getWindowHandle(), nativeLocalPos);
         if (data.isInTitleBarArea(qtScenePos)) {
             POINT pos = {nativeLocalPos.x(), nativeLocalPos.y()};
             if (ClientToScreen(hWnd, &pos) == FALSE) {
@@ -1299,7 +1300,8 @@ void Utils::updateInternalWindowFrameMargins(QWindow *window, const bool enable)
     }();
     const QVariant marginsVar = QVariant::fromValue(margins);
     window->setProperty("_q_windowsCustomMargins", marginsVar);
-#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
     if (QPlatformWindow *platformWindow = window->handle()) {
         if (const auto ni = QGuiApplication::platformNativeInterface()) {
             ni->setWindowProperty(platformWindow, kWindowsCustomMargins, marginsVar);
@@ -1311,14 +1313,15 @@ void Utils::updateInternalWindowFrameMargins(QWindow *window, const bool enable)
         WARNING << "Failed to retrieve the platform window.";
         return;
     }
-#else
+#  else // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     if (const auto platformWindow = dynamic_cast<QNativeInterface::Private::QWindowsWindow *>(window->handle())) {
         platformWindow->setCustomMargins(margins);
     } else {
         WARNING << "Failed to retrieve the platform window.";
         return;
     }
-#endif
+#  endif // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
     triggerFrameChange(windowId);
 }
 
@@ -2004,7 +2007,7 @@ bool Utils::isFrameBorderColorized()
 void Utils::installSystemMenuHook(const WId windowId,
                                   const IsWindowFixedSizeCallback &isWindowFixedSize,
                                   const IsInsideTitleBarDraggableAreaCallback &isInTitleBarArea,
-                                  const GetWindowDevicePixelRatioCallback &getDevicePixelRatio)
+                                  const GetWindowHandleCallback &getWindowHandle)
 {
     Q_ASSERT(windowId);
     Q_ASSERT(isWindowFixedSize);
@@ -2033,7 +2036,7 @@ void Utils::installSystemMenuHook(const WId windowId,
     data.originalWindowProc = originalWindowProc;
     data.isWindowFixedSize = isWindowFixedSize;
     data.isInTitleBarArea = isInTitleBarArea;
-    data.getDevicePixelRatio = getDevicePixelRatio;
+    data.getWindowHandle = getWindowHandle;
     g_utilsHelper()->data.insert(windowId, data);
 }
 
@@ -2237,22 +2240,24 @@ bool Utils::shouldAppsUseDarkMode_windows()
     if (!WindowsVersionHelper::isWin10RS1OrGreater()) {
         return false;
     }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     if (const auto app = qApp->nativeInterface<QNativeInterface::Private::QWindowsApplication>()) {
         return app->isDarkMode();
     } else {
         WARNING << "QWindowsApplication is not available.";
     }
-#elif (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
+#  elif (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
     if (const auto ni = QGuiApplication::platformNativeInterface()) {
         return ni->property("darkMode").toBool();
     } else {
         WARNING << "Failed to retrieve the platform native interface.";
     }
-#else
+#  else // (QT_VERSION < QT_VERSION_CHECK(5, 15, 0))
     // Qt gained the ability to detect the system dark mode setting only since 5.15.
     // We should detect it ourself on versions below that.
-#endif
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
     // Starting from Windows 10 1903, "ShouldAppsUseDarkMode()" (exported by UXTHEME.DLL,
     // ordinal number 132) always return "TRUE" (actually, a random non-zero number at
     // runtime), so we can't use it due to this unreliability. In this case, we just simply
@@ -2604,7 +2609,10 @@ void Utils::hideOriginalTitleBarElements(const WId windowId, const bool disable)
 
 void Utils::setQtDarkModeAwareEnabled(const bool enable)
 {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#ifdef FRAMELESSHELPER_CORE_NO_PRIVATE
+    Q_UNUSED(enable);
+#else // !FRAMELESSHELPER_CORE_NO_PRIVATE
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
     // We'll call QPA functions, so we have to ensure that the QGuiApplication
     // instance has already been created and initialized, because the platform
     // integration infrastructure is created and maintained by QGuiApplication.
@@ -2617,7 +2625,7 @@ void Utils::setQtDarkModeAwareEnabled(const bool enable)
             if (!enable) {
                 return {}; // Clear the flags.
             }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
+#    if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
             // Enabling the DarkModeWindowFrames flag will save us the call of the
             // DwmSetWindowAttribute function. Qt will adjust the non-client area
             // (title bar & frame border) automatically.
@@ -2627,19 +2635,20 @@ void Utils::setQtDarkModeAwareEnabled(const bool enable)
             // There's no global dark theme for Qt Quick applications, so setting this
             // flag has no effect for pure Qt Quick applications.
             return {App::DarkModeWindowFrames | App::DarkModeStyle};
-#else // (QT_VERSION < QT_VERSION_CHECK(6, 5, 0))
+#    else // (QT_VERSION < QT_VERSION_CHECK(6, 5, 0))
             // Don't try to use the broken dark theme for Qt Widgets applications.
             // For Qt Quick applications this is also enough. There's no global dark
             // theme for them anyway.
             return {App::DarkModeWindowFrames};
-#endif // (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
+#    endif // (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
         }());
     } else {
         WARNING << "QWindowsApplication is not available.";
     }
-#else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
     Q_UNUSED(enable);
-#endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_CORE_NO_PRIVATE
 }
 
 void Utils::registerThemeChangeNotification()
diff --git a/src/quick/CMakeLists.txt b/src/quick/CMakeLists.txt
index 4096eee..9fba4c6 100644
--- a/src/quick/CMakeLists.txt
+++ b/src/quick/CMakeLists.txt
@@ -168,15 +168,27 @@ if(FRAMELESSHELPER_NO_BUNDLE_RESOURCE)
     )
 endif()
 
+if(FRAMELESSHELPER_NO_PRIVATE)
+    target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
+        FRAMELESSHELPER_QUICK_NO_PRIVATE
+    )
+endif()
+
 target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
     FRAMELESSHELPER_QUICK_LIBRARY
 )
 
-target_link_libraries(${SUB_PROJ_NAME} PRIVATE
-    Qt${QT_VERSION_MAJOR}::QuickPrivate
-    Qt${QT_VERSION_MAJOR}::QuickTemplates2Private
-    Qt${QT_VERSION_MAJOR}::QuickControls2Private
-)
+if(FRAMELESSHELPER_NO_PRIVATE)
+    target_link_libraries(${SUB_PROJ_NAME} PRIVATE
+        Qt${QT_VERSION_MAJOR}::Quick
+    )
+else()
+    target_link_libraries(${SUB_PROJ_NAME} PRIVATE
+        Qt${QT_VERSION_MAJOR}::QuickPrivate
+        Qt${QT_VERSION_MAJOR}::QuickTemplates2Private
+        Qt${QT_VERSION_MAJOR}::QuickControls2Private
+    )
+endif()
 
 target_link_libraries(${SUB_PROJ_NAME} PUBLIC
     ${PROJECT_NAME}::Core
diff --git a/src/quick/framelesshelperquick_global.cpp b/src/quick/framelesshelperquick_global.cpp
index d70fa17..4bac0db 100644
--- a/src/quick/framelesshelperquick_global.cpp
+++ b/src/quick/framelesshelperquick_global.cpp
@@ -28,18 +28,20 @@
 #  include "framelessquickhelper_p.h"
 #  include "framelessquickutils.h"
 #  include "quickchromepalette.h"
-#  include "quickstandardsystembutton_p.h"
-#  include "quickstandardtitlebar_p.h"
-#  include "framelessquickwindow_p.h"
-#  include "framelessquickwindow_p_p.h"
-#  include "framelessquickapplicationwindow_p.h"
-#  include "framelessquickapplicationwindow_p_p.h"
 #  include "quickmicamaterial.h"
 #  include "quickmicamaterial_p.h"
 #  include "quickimageitem.h"
 #  include "quickimageitem_p.h"
 #  include "quickwindowborder.h"
 #  include "quickwindowborder_p.h"
+#  ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+#    include "quickstandardsystembutton_p.h"
+#    include "quickstandardtitlebar_p.h"
+#    include "framelessquickwindow_p.h"
+#    include "framelessquickwindow_p_p.h"
+#    include "framelessquickapplicationwindow_p.h"
+#    include "framelessquickapplicationwindow_p_p.h"
+#  endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
@@ -100,6 +102,16 @@ void initialize()
     qRegisterMetaType<FramelessQuickUtils *>();
     qRegisterMetaType<QuickChromePalette>();
     qRegisterMetaType<QuickChromePalette *>();
+    qRegisterMetaType<QuickMicaMaterial>();
+    qRegisterMetaType<QuickMicaMaterial *>();
+    qRegisterMetaType<QuickMicaMaterialPrivate>();
+    qRegisterMetaType<QuickImageItem>();
+    qRegisterMetaType<QuickImageItem *>();
+    qRegisterMetaType<QuickImageItemPrivate>();
+    qRegisterMetaType<QuickWindowBorder>();
+    qRegisterMetaType<QuickWindowBorder *>();
+    qRegisterMetaType<QuickWindowBorderPrivate>();
+#  ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
     qRegisterMetaType<QuickStandardSystemButton>();
     qRegisterMetaType<QuickStandardSystemButton *>();
     qRegisterMetaType<QuickStandardTitleBar>();
@@ -110,15 +122,7 @@ void initialize()
     qRegisterMetaType<FramelessQuickApplicationWindow>();
     qRegisterMetaType<FramelessQuickApplicationWindow *>();
     qRegisterMetaType<FramelessQuickApplicationWindowPrivate>();
-    qRegisterMetaType<QuickMicaMaterial>();
-    qRegisterMetaType<QuickMicaMaterial *>();
-    qRegisterMetaType<QuickMicaMaterialPrivate>();
-    qRegisterMetaType<QuickImageItem>();
-    qRegisterMetaType<QuickImageItem *>();
-    qRegisterMetaType<QuickImageItemPrivate>();
-    qRegisterMetaType<QuickWindowBorder>();
-    qRegisterMetaType<QuickWindowBorder *>();
-    qRegisterMetaType<QuickWindowBorderPrivate>();
+#  endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 }
 
diff --git a/src/quick/framelessquickapplicationwindow.cpp b/src/quick/framelessquickapplicationwindow.cpp
index 92d088c..1bf32d2 100644
--- a/src/quick/framelessquickapplicationwindow.cpp
+++ b/src/quick/framelessquickapplicationwindow.cpp
@@ -22,6 +22,8 @@
  * SOFTWARE.
  */
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelessquickapplicationwindow_p.h"
 #include "framelessquickapplicationwindow_p_p.h"
 #include "framelessquickhelper.h"
@@ -239,3 +241,5 @@ void FramelessQuickApplicationWindow::componentComplete()
 }
 
 FRAMELESSHELPER_END_NAMESPACE
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/src/quick/framelessquickhelper.cpp b/src/quick/framelessquickhelper.cpp
index 17d939e..7edda01 100644
--- a/src/quick/framelessquickhelper.cpp
+++ b/src/quick/framelessquickhelper.cpp
@@ -28,14 +28,16 @@
 #include "quickwindowborder.h"
 #include <QtCore/qmutex.h>
 #include <QtCore/qtimer.h>
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-#  include <QtGui/qpa/qplatformwindow.h> // For QWINDOWSIZE_MAX
-#else
-#  include <QtGui/private/qwindow_p.h> // For QWINDOWSIZE_MAX
-#endif
-#include <QtQuick/private/qquickitem_p.h>
-#include <QtQuickTemplates2/private/qquickabstractbutton_p.h>
-#include <QtQuickTemplates2/private/qquickabstractbutton_p_p.h>
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/qpa/qplatformwindow.h> // For QWINDOWSIZE_MAX
+#  else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#    include <QtGui/private/qwindow_p.h> // For QWINDOWSIZE_MAX
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#  include <QtQuick/private/qquickitem_p.h>
+#  include <QtQuickTemplates2/private/qquickabstractbutton_p.h>
+#  include <QtQuickTemplates2/private/qquickabstractbutton_p_p.h>
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 #include <framelessmanager.h>
 #include <framelessconfig_p.h>
 #include <utils.h>
@@ -43,6 +45,10 @@
 #  include <winverhelper_p.h>
 #endif // Q_OS_WINDOWS
 
+#ifndef QWINDOWSIZE_MAX
+#  define QWINDOWSIZE_MAX ((1 << 24) - 1)
+#endif // QWINDOWSIZE_MAX
+
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcFramelessQuickHelper, "wangwenx190.framelesshelper.quick.framelessquickhelper")
@@ -356,7 +362,7 @@ void FramelessQuickHelperPrivate::showSystemMenu(const QPoint &pos)
         return;
     }
     const QPoint globalPos = window->mapToGlobal(pos);
-    const QPoint nativePos = QPointF(QPointF(globalPos) * window->effectiveDevicePixelRatio()).toPoint();
+    const QPoint nativePos = Utils::toNativePixels(window, globalPos);
     Utils::showSystemMenu(window->winId(), nativePos, false, [this]() -> bool { return isWindowFixedSize(); });
 #else
     Q_UNUSED(pos);
@@ -578,7 +584,9 @@ QuickMicaMaterial *FramelessQuickHelperPrivate::findOrCreateMicaMaterial() const
     item->setParent(rootItem);
     item->setParentItem(rootItem);
     item->setZ(-999); // Make sure it always stays on the bottom.
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
     QQuickItemPrivate::get(item)->anchors()->setFill(rootItem);
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
     return item;
 }
 
@@ -600,7 +608,9 @@ QuickWindowBorder *FramelessQuickHelperPrivate::findOrCreateWindowBorder() const
     item->setParent(rootItem);
     item->setParentItem(rootItem);
     item->setZ(999); // Make sure it always stays on the top.
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
     QQuickItemPrivate::get(item)->anchors()->setFill(rootItem);
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
     return item;
 }
 
@@ -804,6 +814,10 @@ bool FramelessQuickHelperPrivate::shouldIgnoreMouseEvents(const QPoint &pos) con
 void FramelessQuickHelperPrivate::setSystemButtonState(const QuickGlobal::SystemButtonType button,
                                                        const QuickGlobal::ButtonState state)
 {
+#ifdef FRAMELESSHELPER_QUICK_NO_PRIVATE
+    Q_UNUSED(button);
+    Q_UNUSED(state);
+#else // !FRAMELESSHELPER_QUICK_NO_PRIVATE
     Q_ASSERT(button != QuickGlobal::SystemButtonType::Unknown);
     if (button == QuickGlobal::SystemButtonType::Unknown) {
         return;
@@ -880,6 +894,7 @@ void FramelessQuickHelperPrivate::setSystemButtonState(const QuickGlobal::System
         };
         updateButtonState(quickButton);
     }
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 }
 
 QuickHelperData FramelessQuickHelperPrivate::getWindowData() const
diff --git a/src/quick/framelessquickmodule.cpp b/src/quick/framelessquickmodule.cpp
index 72ea704..1c597cd 100644
--- a/src/quick/framelessquickmodule.cpp
+++ b/src/quick/framelessquickmodule.cpp
@@ -29,12 +29,14 @@
 #include "quickmicamaterial.h"
 #include "quickimageitem.h"
 #include "quickwindowborder.h"
-#include "framelessquickwindow_p.h"
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-#  include "framelessquickapplicationwindow_p.h"
-#  include "quickstandardsystembutton_p.h"
-#  include "quickstandardtitlebar_p.h"
-#endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+#  include "framelessquickwindow_p.h"
+#  if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#    include "framelessquickapplicationwindow_p.h"
+#    include "quickstandardsystembutton_p.h"
+#    include "quickstandardtitlebar_p.h"
+#  endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 
 #ifndef QUICK_URI_SHORT
 #  define QUICK_URI_SHORT FRAMELESSHELPER_QUICK_URI, 1
@@ -90,22 +92,28 @@ void FramelessHelper::Quick::registerTypes(QQmlEngine *engine)
     qmlRegisterAnonymousType<QuickChromePalette>(QUICK_URI_SHORT);
 
     qmlRegisterType<FramelessQuickHelper>(QUICK_URI_EXPAND("FramelessHelper"));
-    qmlRegisterType<FramelessQuickWindow>(QUICK_URI_EXPAND("FramelessWindow"));
     qmlRegisterType<QuickMicaMaterial>(QUICK_URI_EXPAND("MicaMaterial"));
     qmlRegisterType<QuickImageItem>(QUICK_URI_EXPAND("ImageItem"));
     qmlRegisterType<QuickWindowBorder>(QUICK_URI_EXPAND("WindowBorder"));
 
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+#ifdef FRAMELESSHELPER_QUICK_NO_PRIVATE
+    qmlRegisterTypeNotAvailable(QUICK_URI_EXPAND("FramelessWindow"),
+        FRAMELESSHELPER_STRING_LITERAL("FramelessWindow is not available."));
+#else // !FRAMELESSHELPER_QUICK_NO_PRIVATE
+    qmlRegisterType<FramelessQuickWindow>(QUICK_URI_EXPAND("FramelessWindow"));
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
+
+#if ((QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)) && !defined(FRAMELESSHELPER_QUICK_NO_PRIVATE))
     qmlRegisterType<FramelessQuickApplicationWindow>(QUICK_URI_EXPAND("FramelessApplicationWindow"));
     qmlRegisterType<QuickStandardSystemButton>(QUICK_URI_EXPAND("StandardSystemButton"));
     qmlRegisterType<QuickStandardTitleBar>(QUICK_URI_EXPAND("StandardTitleBar"));
-#else // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+#else // ((QT_VERSION < QT_VERSION_CHECK(6, 0, 0)) || FRAMELESSHELPER_QUICK_NO_PRIVATE)
     qmlRegisterTypeNotAvailable(QUICK_URI_EXPAND("FramelessApplicationWindow"),
-        FRAMELESSHELPER_STRING_LITERAL("FramelessApplicationWindow is not available until Qt6."));
+        FRAMELESSHELPER_STRING_LITERAL("FramelessApplicationWindow is not available."));
     qmlRegisterTypeNotAvailable(QUICK_URI_EXPAND("StandardSystemButton"),
-        FRAMELESSHELPER_STRING_LITERAL("StandardSystemButton is not available until Qt6."));
+        FRAMELESSHELPER_STRING_LITERAL("StandardSystemButton is not available."));
     qmlRegisterTypeNotAvailable(QUICK_URI_EXPAND("StandardTitleBar"),
-        FRAMELESSHELPER_STRING_LITERAL("StandardTitleBar is not available until Qt6."));
+        FRAMELESSHELPER_STRING_LITERAL("StandardTitleBar is not available."));
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 
     qmlRegisterModule(QUICK_URI_FULL);
diff --git a/src/quick/framelessquickwindow.cpp b/src/quick/framelessquickwindow.cpp
index 7a12e44..f32ea33 100644
--- a/src/quick/framelessquickwindow.cpp
+++ b/src/quick/framelessquickwindow.cpp
@@ -22,6 +22,8 @@
  * SOFTWARE.
  */
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "framelessquickwindow_p.h"
 #include "framelessquickwindow_p_p.h"
 #include "framelessquickhelper.h"
@@ -239,3 +241,5 @@ void FramelessQuickWindow::componentComplete()
 }
 
 FRAMELESSHELPER_END_NAMESPACE
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/src/quick/quickmicamaterial.cpp b/src/quick/quickmicamaterial.cpp
index c88b6fe..509da24 100644
--- a/src/quick/quickmicamaterial.cpp
+++ b/src/quick/quickmicamaterial.cpp
@@ -29,9 +29,11 @@
 #include <QtGui/qscreen.h>
 #include <QtGui/qpainter.h>
 #include <QtGui/qguiapplication.h>
-#include <QtQuick/private/qquickitem_p.h>
 #include <QtQuick/qquickwindow.h>
 #include <QtQuick/qsgsimpletexturenode.h>
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+#  include <QtQuick/private/qquickitem_p.h>
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
@@ -197,7 +199,9 @@ void QuickMicaMaterialPrivate::rebindWindow()
     QQuickItem * const rootItem = window->contentItem();
     q->setParent(rootItem);
     q->setParentItem(rootItem);
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
     QQuickItemPrivate::get(q)->anchors()->setFill(rootItem);
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
     q->setZ(-999); // Make sure we always stays on the bottom most place.
     if (m_rootWindowXChangedConnection) {
         disconnect(m_rootWindowXChangedConnection);
diff --git a/src/quick/quickstandardsystembutton.cpp b/src/quick/quickstandardsystembutton.cpp
index a9d1fe1..20f39a4 100644
--- a/src/quick/quickstandardsystembutton.cpp
+++ b/src/quick/quickstandardsystembutton.cpp
@@ -22,6 +22,8 @@
  * SOFTWARE.
  */
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "quickstandardsystembutton_p.h"
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include <framelessmanager_p.h>
@@ -300,3 +302,5 @@ void QuickStandardSystemButton::componentComplete()
 
 FRAMELESSHELPER_END_NAMESPACE
 #endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/src/quick/quickstandardtitlebar.cpp b/src/quick/quickstandardtitlebar.cpp
index e3c4f9a..13ae909 100644
--- a/src/quick/quickstandardtitlebar.cpp
+++ b/src/quick/quickstandardtitlebar.cpp
@@ -22,6 +22,8 @@
  * SOFTWARE.
  */
 
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+
 #include "quickstandardtitlebar_p.h"
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include "quickimageitem.h"
@@ -589,4 +591,6 @@ void QuickStandardTitleBar::componentComplete()
 }
 
 FRAMELESSHELPER_END_NAMESPACE
-#endif
+#endif // (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
diff --git a/src/quick/quickwindowborder.cpp b/src/quick/quickwindowborder.cpp
index c6ccf11..45d8441 100644
--- a/src/quick/quickwindowborder.cpp
+++ b/src/quick/quickwindowborder.cpp
@@ -25,8 +25,10 @@
 #include "quickwindowborder.h"
 #include "quickwindowborder_p.h"
 #include <windowborderpainter.h>
-#include <QtQuick/private/qquickitem_p.h>
 #include <QtQuick/qquickwindow.h>
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
+#  include <QtQuick/private/qquickitem_p.h>
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
@@ -171,7 +173,9 @@ void QuickWindowBorderPrivate::rebindWindow()
     QQuickItem * const rootItem = window->contentItem();
     q->setParent(rootItem);
     q->setParentItem(rootItem);
+#ifndef FRAMELESSHELPER_QUICK_NO_PRIVATE
     QQuickItemPrivate::get(q)->anchors()->setFill(rootItem);
+#endif // FRAMELESSHELPER_QUICK_NO_PRIVATE
     q->setZ(999); // Make sure we always stays on the top most place.
     if (m_activeChangeConnection) {
         disconnect(m_activeChangeConnection);
diff --git a/src/widgets/CMakeLists.txt b/src/widgets/CMakeLists.txt
index 9274949..2e29f89 100644
--- a/src/widgets/CMakeLists.txt
+++ b/src/widgets/CMakeLists.txt
@@ -107,13 +107,19 @@ if(FRAMELESSHELPER_NO_BUNDLE_RESOURCE)
     )
 endif()
 
+if(FRAMELESSHELPER_NO_PRIVATE)
+    target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
+        FRAMELESSHELPER_WIDGETS_NO_PRIVATE
+    )
+endif()
+
 target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
     QT_NO_KEYWORDS
     FRAMELESSHELPER_WIDGETS_LIBRARY
 )
 
 target_link_libraries(${SUB_PROJ_NAME} PRIVATE
-    Qt${QT_VERSION_MAJOR}::WidgetsPrivate
+    Qt${QT_VERSION_MAJOR}::Widgets
 )
 
 target_link_libraries(${SUB_PROJ_NAME} PUBLIC
diff --git a/src/widgets/framelesswidgetshelper.cpp b/src/widgets/framelesswidgetshelper.cpp
index 80b98bd..e0066ec 100644
--- a/src/widgets/framelesswidgetshelper.cpp
+++ b/src/widgets/framelesswidgetshelper.cpp
@@ -41,6 +41,10 @@
 #include <framelessconfig_p.h>
 #include <utils.h>
 
+#ifndef QWIDGETSIZE_MAX
+#  define QWIDGETSIZE_MAX ((1 << 24) - 1)
+#endif // QWIDGETSIZE_MAX
+
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcFramelessWidgetsHelper, "wangwenx190.framelesshelper.widgets.framelesswidgetshelper")
@@ -815,7 +819,7 @@ void FramelessWidgetsHelperPrivate::showSystemMenu(const QPoint &pos)
         return;
     }
     const QPoint globalPos = m_window->mapToGlobal(pos);
-    const QPoint nativePos = QPointF(QPointF(globalPos) * m_window->devicePixelRatioF()).toPoint();
+    const QPoint nativePos = Utils::toNativePixels(m_window->windowHandle(), globalPos);
     Utils::showSystemMenu(m_window->winId(), nativePos, false, [this]() -> bool { return isWindowFixedSize(); });
 #else
     // ### TODO