diff --git a/doc/how_to_build_win.md b/doc/how_to_build_win.md
index 843f9e5..0fa1717 100644
--- a/doc/how_to_build_win.md
+++ b/doc/how_to_build_win.md
@@ -1,41 +1,38 @@
 
 # Building on Windows
 
-This software can be built using Visual Studio 2015 or above and Qt 5.9 (later Qt versions still not working correctly.)
+This software can be built using Visual Studio 2019 and Qt 5.x
 
 ## Required Software
 
-### Visual Studio Express 2015 or higher for Windows Desktop
-- https://www.visualstudio.com/vs/older-downloads/
-- Make sure the target platform is "for Windows Desktop", not "for Windows".
-- Community and Professional versions of Visual Studio for Windows Desktop also work.
+### Visual Studio Community 2019
+- https://www.visualstudio.microsoft.com
 - During the installation, make sure to select all the Visual C++ packages.
 
 ### CMake
 - https://cmake.org/download/
-- This will be used to create the `MSVC 2015` project file.
+- This will be used to create the `MSVC 2019` project file.
 
 ### Qt
 - https://www.qt.io/download-open-source/
 - Qt is a cross-platform GUI framework.
-- Install Qt 5.9 or higher (64-bit version, tested up to 5.9.9) with the [Qt Online Installer for Windows](http://download.qt.io/official_releases/online_installers/qt-unified-windows-x86-online.exe).
+- Install Qt 5.9 or higher (64-bit version, tested up to 5.15.2) with the [Qt Online Installer for Windows](http://download.qt.io/official_releases/online_installers/qt-unified-windows-x86-online.exe).
+
+#### Customized Qt v5.15.2 with WinTab support
+- Qt have started to support Windows Ink from 5.12. Unlike WinTab API used in Qt 5.9 the tablet behaviors are different and are (at least, for OT) problematic.
+- The customized Qt5.15.2 are made with cherry-picking the WinTab feature to be officially introduced from 6.0.
+- You can build OT with WinTab support by using the prebuilt package of the customized version of Qt for MSVC2019-x64 provided [here](https://github.com/shun-iwasawa/qt5/releases/tag/v5.15.2_wintab) and checking the `WITH_WINTAB` checkbox in CMake to build.
 
 ### boost
-- Boost 1.55.0 or later is required (tested up to 1.61.0).
-- http://www.boost.org/users/history/version_1_61_0.html
+- Boost 1.55.0 or later is required (tested up to 1.73.0).
+- http://www.boost.org/users/history/version_1_73_0.html
 - Download boost_1_73_0.zip from the above link. Extract all contents to the - '$opentoonz/thirdparty/boost' directory.
-- Install the following patch (Make the changes listed in the patch file), if you use Boost 1.55.0 with Visual Studio 2013.
-- https://svn.boost.org/trac/boost/attachment/ticket/9369/vc12_fix_has_member_function_callable_with.patch
 
 ### OpenCV
 - v4.1.0 and later
 - https://opencv.org/
 - On configuring with CMake or in the environmental variables, specify `OpenCV_DIR` to the `build` folder in the install folder of OpenCV (like `C:/opencv/build`).
 
-### libjpeg-turbo
-- https://www.libjpeg-turbo.org/
-- Copy the lib and include folders from libjpeg-turbo64 into `$opentoonz/thirdparty/libjpeg-turbo64`.
-
 ## Acquiring the Source Code
 - Note: You can also perform these next commands with Github for Desktop client.
 - Clone the base repository.
@@ -58,7 +55,7 @@ This software can be built using Visual Studio 2015 or above and Qt 5.9 (later Q
 - If the build directory is in the git repository, be sure to add the directory to .gitignore
 - If the build directory is different from the one above, be sure to change to the specified directory where appropriate below.
 -Click on Configure and select the version of Visual Studio you are using.
--If Qt was installed to a directory other than the default, and the error Specify QT_PATH properly appears, navigate to the `QT_DIR` install folder and specify the path to `msvc2015_64`. Rerun Configure.
+-If Qt was installed to a directory other than the default, and the error Specify QT_PATH properly appears, navigate to the `QT_DIR` install folder and specify the path to `msvc2019_64`. Rerun Configure.
 -If red lines appear in the bottom box, you can safely ignore them.
 -Click Generate
 -Should the CMakeLists.txt file change, such as during automatic build cleanup, there is no need to rerun CMake.
@@ -149,7 +146,7 @@ OpenToonz utilizes the QuickTime SDK's `mov` and associated file formats.  Since
 
 ### Qt
 - https://www.qt.io/download-open-source/
-- Install Qt 5.9 (32-bit version) by the  by [Qt Online Installer for Windows](http://download.qt.io/official_releases/online_installers/qt-unified-windows-x86-online.exe).
+- Install Qt 5.x (32-bit version) by the  by [Qt Online Installer for Windows](http://download.qt.io/official_releases/online_installers/qt-unified-windows-x86-online.exe).
 
 ### QuickTime SDK
 1. Sign in using your Apple developer ID and download `QuickTime 7.3 SDK for Windows.zip` from the following url.
@@ -159,7 +156,7 @@ OpenToonz utilizes the QuickTime SDK's `mov` and associated file formats.  Since
 ### Using CMake to Create a Visual Studio 32-bit Project
 - Follow the same instructions as for the 64-bit version, but change the following:
   - `$opentoonz/toonz/build` to `$opentoonz/toonz/build32`
-  - `Visual Studio 14 2015 Win64` to `Visual Studio 14 2015`
+  - `Visual Studio 16 2019 x64` to `Visual Studio 16 2019 Win32`
 - Change `QT_PATH` to the path of your 32-bit version of Qt
 
 ### Building the 32-bit Version
@@ -170,10 +167,13 @@ OpenToonz utilizes the QuickTime SDK's `mov` and associated file formats.  Since
   - From `$opentoonz/toonz/build32/Release`
     - t32bitsrv.exe
     - image.dll
+    - tnzbase.dll
     - tnzcore.dll
+    - tnzext.dll
+    - toonzlib.dll
   - From the 32-bit version of Qt
-    - Qt5Core.dll
-    - Qt5Network.dll
+    - run `windeployqt` to obtain required libraries
+    - additionally, Qt5Gui.dll
   - `$opentoonz/thirdparty/glut/3.7.6/lib/glut32.dll`
 
 ## Creating Translation Files
diff --git a/doc/how_to_build_win_ja.md b/doc/how_to_build_win_ja.md
index 7558571..695639c 100644
--- a/doc/how_to_build_win_ja.md
+++ b/doc/how_to_build_win_ja.md
@@ -1,13 +1,12 @@
 # ビルド手順（Windows）
 
-Visual Studio 2015 と Qt 5.9 でビルドできることを確認しています。
+Visual Studio 2019 (2015以降) と Qt 5.15 (5.9以降) でビルドできることを確認しています。
 
 ## 必要なソフトウェアの導入
 
-### Visual Studio Express 2015 for Windows Desktop
-- https://www.visualstudio.com/ja-jp/products/visual-studio-express-vs.aspx
-- Express 版はターゲットプラットフォームごとにバージョンが分かれています。 `for Windows` ではなく `for Windows Desktop` を使用します
-- Community 版や Professional 版などでも構いません
+### Visual Studio Community 2019
+- https://www.visualstudio.microsoft.com
+- C++ によるデスクトップ開発の環境をインストールします。
 
 ### CMake
 - https://cmake.org/download/
@@ -29,12 +28,22 @@ Visual Studio 2015 と Qt 5.9 でビルドできることを確認していま�
 ### Qt
 - https://www.qt.io/download-open-source/
 - クロスプラットフォームの GUI フレームワークです
-- 上記の URL から以下のファイルをダウンロードして Qt 5.9 (64 ビット版) を適当なフォルダにインストールします
+- 上記の URL から以下のファイルをダウンロードして Qt 5.15 (64 ビット版) を適当なフォルダにインストールします
   - [Qt Online Installer for Windows](http://download.qt.io/official_releases/online_installers/qt-unified-windows-x86-online.exe)
 
+#### WinTabサポート付きカスタマイズ版 Qt5.15.2
+- Qtは5.12以降Windows Ink APIをネイティブで使用しています。5.9まで使用されていたWinTab APIとはタブレットの挙動が異なり、それによる不具合が報告されています。
+- そこで、公式には6.0から導入されるWinTab APIへの切り替え機能をcherry-pickしたカスタマイズ版の5.15.2を頒布しています。
+- MSVC2019-x64向けのビルド済みパッケージは [こちら](https://github.com/shun-iwasawa/qt5/releases/tag/v5.15.2_wintab) から入手できます。さらにCMakeで`WITH_WINTAB`オプションを有効にすることで、WinTabAPIへの切り替えが可能になります。
+
+### OpenCV
+- v4.1.0 以降
+- https://opencv.org/
+- CMake上、または環境変数で`OpenCV_DIR` の値をOpenCVのインストールフォルダ内の`build`フォルダの場所に設定します。（例： `C:/opencv/build`）
+
 ### boost
-- http://www.boost.org/users/history/version_1_61_0.html
-- 上記の URL から boost_1_61_0.zip をダウンロードして解凍し、 boost_1_61_0 を `$opentoonz/thirdparty/boost` にコピーします
+- http://www.boost.org/users/history/version_1_73_0.html
+- 上記の URL から boost_1_73_0.zip をダウンロードして解凍し、 boost_1_61_0 を `$opentoonz/thirdparty/boost` にコピーします
 
 ## ビルド
 
@@ -45,7 +54,7 @@ Visual Studio 2015 と Qt 5.9 でビルドできることを確認していま�
   - 他の場所でも構いません
   - チェックアウトしたフォルダ内に作成する場合は、buildから開始するフォルダ名にするとgitから無視されます
   - ビルド先を変更した場合は、以下の説明を適宜読み替えてください
-4. Configure をクリックして、 Visual Studio 14 2015 Win64 を選択します
+4. Configure をクリックして、 Visual Studio 16 2019 Win64 を選択します
 5. Qt のインストール先がデフォルトではない場合、 `Specify QT_PATH properly` というエラーが表示されるので、 `QT_PATH` に Qt5 をインストールしたパスを指定します
 6. Generate をクリック
   - CMakeLists.txt に変更があった場合は、ビルド時に自動的に処理が走るので、以降は CMake を直接使用する必要はありません
@@ -61,16 +70,14 @@ Visual Studio 2015 と Qt 5.9 でビルドできることを確認していま�
 1. `$opentoonz/toonz/build/OpenToonz.sln` を開いて Release 構成を選択してビルドします
 2. `$opentoonz/toonz/build/Release` にファイルが生成されます
 
-## ストップモーション機能とキヤノン製デジタルカメラのサポートを有効にするには
+## キヤノン製デジタルカメラのサポートを有効にするには
 
-以下の３つのライブラリが追加で必要です。
-  - [OpenCV](https://opencv.org/) (v4.1.0以上)
-  - [libjpeg-turbo](https://www.libjpeg-turbo.org/)
+以下のライブラリが追加で必要です。
   - Canon EOS Digital SDK (EDSDK)：入手方法の詳細は[キヤノンマーケティングジャパン株式会社Webサイト](https://cweb.canon.jp/eos/info/api-package/)をご参照下さい。
 
-CMake上で、`WITH_STOPMOTION` オプションをONにします。CMake上、または環境変数で`OpenCV_DIR` の値をOpenCVのインストールフォルダ内の`build`フォルダの場所に設定します。（例： `C:/opencv/build`）
+CMake上で、`WITH_CANON` オプションをONにします。
 
-実行時にはOpenCV、libjpeg-turboならびにCanon EDSDKの.dllファイルを`OpenToonz.exe` と同じフォルダにコピーします。
+実行時にはCanon EDSDKの.dllファイルを`OpenToonz.exe` と同じフォルダにコピーします。
 
 ## 実行
 ### 実行可能ファイルなどの配置
@@ -80,6 +87,7 @@ CMake上で、`WITH_STOPMOTION` オプションをONにします。CMake上、�
 3. 下記のファイルを `OpenToonz.exe` と同じフォルダにコピーします
   - `$opentoonz/thirdparty/glut/3.7.6/lib/glut64.dll`
   - `$opentoonz/thirdparty/glew/glew-1.9.0/bin/64bit/glew32.dll`
+  - OpenCV、libjpeg-turboの.dllファイル
 4. バイナリ版の OpenToonz のインストール先にある `srv` フォルダを `OpenToonz.exe` と同じフォルダにコピーします
   - `srv` が無くても OpenToonz は動作しますが、 mov 形式などに対応できません
   - `srv` 内のファイルの生成方法は後述します
@@ -101,7 +109,7 @@ OpenToonz は QuickTime SDK を用いて mov 形式などへ対応していま�
 
 ### Qt
 - https://www.qt.io/download-open-source/
-- 64 ビット版と同じインストーラーで Qt 5.9 (32 ビット版) を適当なフォルダにインストールします
+- 64 ビット版と同じインストーラーで Qt 5.x (32 ビット版) を適当なフォルダにインストールします
 
 ### QuickTime SDK
 1. Apple の開発者登録をして下記のURLから `QuickTime 7.3 SDK for Windows.zip` をダウンロードします
@@ -111,7 +119,7 @@ OpenToonz は QuickTime SDK を用いて mov 形式などへ対応していま�
 ### CMake で Visual Studio の 32 ビット版のプロジェクトを生成する
 - 64 ビット版と同様の手順で、次のようにフォルダ名とターゲットを読み替えます
   - `$opentoonz/toonz/build` → `$opentoonz/toonz/build32`
-  - Visual Studio 14 2015 Win64 → Visual Studio 14 2015
+  - Visual Studio 16 2019 x64 → Visual Studio 16 2019 Win32
 - `QT_PATH` には 32 ビット版の Qt のパスを指定します
 
 ### 32 ビット版のビルド
@@ -122,10 +130,13 @@ OpenToonz は QuickTime SDK を用いて mov 形式などへ対応していま�
   - `$opentoonz/toonz/build32/Release` から
     - t32bitsrv.exe
     - image.dll
+    - tnzbase.dll
     - tnzcore.dll
+    - tnzext.dll
+    - toonzlib.dll
   - Qt の 32ビット版のインストール先から
-    - Qt5Core.dll
-    - Qt5Network.dll
+    - `windeployqt.exe`を実行して必要なライブラリを入手
+    - 追加で Qt5Gui.dll
   - `$opentoonz/thirdparty/glut/3.7.6/lib/glut32.dll`
 
 ## 翻訳ファイルの生成
diff --git a/stuff/doc/LICENSE/notice_about_modified_qt.txt b/stuff/doc/LICENSE/notice_about_modified_qt.txt
new file mode 100644
index 0000000..8ee13f6
--- /dev/null
+++ b/stuff/doc/LICENSE/notice_about_modified_qt.txt
@@ -0,0 +1,75 @@
+## Notice about modified Qt
+
+ If you are using Windows version of OpenToonz installed from the installer 
+ provided from OpenToonz website (https://opentoonz.github.io/), Qt libraries 
+ distributed with the software may be our customized version. 
+ The other OS versions (macOS, Linux) are not the case. 
+
+
+### To check whether the Qt libraries are customized.
+
+  - Launch OpenToonz.
+  - Open Preferences.
+  - Check if there is a checkbox "Use Qt's Native Windows Ink Support" in the 
+    "Touch / Tablet Settings" category.
+
+  If the option exists, Qt libraries are customized version (Qt 5.15.2 with WinTab support).
+
+----------
+
+## About Qt 5.15.2 with WinTab support
+
+  This version is made based on v5.15.2 with cherry-picking the following commit 
+  to the qtbase module, in order to make it enable to use WinTab API in Qt 5.15.2:
+
+  commit id: [4c4693cf964e9d7370c27a26e1d263a262aee568](https://github.com/shun-iwasawa/qtbase/commit/4c4693cf964e9d7370c27a26e1d263a262aee568)
+  commit title: Windows: Provide a way to switch between WinTab and Windows Ink at run-time
+
+
+### Source Code
+
+  You can find the source code tree to build this package and track the modification here:
+  https://github.com/shun-iwasawa/qt5/tree/v5.15.2_wintab
+
+
+### Build Configurations
+
+  The attached package is built by the following command lines:
+  ```
+  > configure -debug-and-release -opensource -confirm-license -prefix ../build -make libs -no-pch -openssl OPENSSL_PREFIX="path\to\OpenSSL-Win64" -opengl dynamic
+  
+  > jom -j4
+  
+  > jom module-qtscript -j4
+  
+  > jom install
+  ```
+
+
+### Dependent Libraries
+
+  The attached package is built by using the following libraries / softwares.
+
+  - OpenSSL Toolkit 1.1.1j 
+    [Binary package from Shining Light Productions](https://slproweb.com/products/Win32OpenSSL.html)
+  - Perl
+    [ActivePerl 5.28](https://www.activestate.com/products/perl/downloads/)
+  - [Python 2.7.18](https://www.python.org/downloads/release/python-2718/)
+  - [Ruby 2.7.2-1 (x64)](https://rubyinstaller.org/downloads/)
+  - ANGLE : already included in the repository.
+  - Microsoft Visual Studio Community 2019
+  - [jom](https://wiki.qt.io/Jom)
+  - ICU : Not used.
+
+
+#### Reference: 
+
+  - [Qt for Windows - Requirements](https://doc.qt.io/qt-5/windows-requirements.html)
+  - [Qt for Windows - Building from Source](https://doc.qt.io/qt-5/windows-building.html)
+
+
+----------
+March 26, 2021
+Shun Iwasawa, OpenToonz team
+
+
diff --git a/toonz/sources/CMakeLists.txt b/toonz/sources/CMakeLists.txt
index 0860456..7cf3d7c 100644
--- a/toonz/sources/CMakeLists.txt
+++ b/toonz/sources/CMakeLists.txt
@@ -103,6 +103,7 @@ option(WITH_SYSTEM_LZO "Use the system LZO library instead of 'thirdpary'" ${_in
 option(WITH_SYSTEM_SUPERLU "Use the system SuperLU library instead of 'thirdpary'" ${_init_SYSTEM_SUPERLU})
 option(WITH_CANON "Build with Canon DSLR support - Requires Canon SDK" OFF)
 option(WITH_TRANSLATION "Generate translation projects as well" ON)
+option(WITH_WINTAB "(Windows only) Build with customized Qt with WinTab support. https://github.com/shun-iwasawa/qt5/releases/tag/v5.15.2_wintab" OFF)
 
 # avoid using again
 option_defaults_clear()
@@ -148,7 +149,7 @@ endif()
 message(STATUS "Thirdpary Library Search path:" ${THIRDPARTY_LIBS_HINTS})
 
 if(BUILD_ENV_MSVC)
-    set(QT_PATH "C:/Qt/5.9.2/msvc2015${PLATFORM2}" CACHE PATH "Qt installation directory")
+    set(QT_PATH "C:/Qt/5.15.2/msvc2019${PLATFORM2}" CACHE PATH "Qt installation directory")
     if(NOT EXISTS ${QT_PATH})
         message("Specify QT_PATH properly")
         return()
diff --git a/toonz/sources/include/toonz/preferences.h b/toonz/sources/include/toonz/preferences.h
index 9f0fab1..4f8f1d2 100644
--- a/toonz/sources/include/toonz/preferences.h
+++ b/toonz/sources/include/toonz/preferences.h
@@ -469,6 +469,9 @@ public:
 
   // Tablet tab
   bool isWinInkEnabled() const { return getBoolValue(winInkEnabled); }
+  bool isQtNativeWinInkEnabled() const {
+    return getBoolValue(useQtNativeWinInk);
+  }
 
   // Others (not appeared in the popup)
   // Shortcut popup settings
diff --git a/toonz/sources/include/toonz/preferencesitemids.h b/toonz/sources/include/toonz/preferencesitemids.h
index d826461..d1ab464 100644
--- a/toonz/sources/include/toonz/preferencesitemids.h
+++ b/toonz/sources/include/toonz/preferencesitemids.h
@@ -177,6 +177,8 @@ enum PreferencesItemId {
   // TounchGestureControl // Touch Gesture is a checkable command and not in
   // preferences.ini
   winInkEnabled,
+  // This option will be shown & available only when WITH_WINTAB is defined
+  useQtNativeWinInk,
 
   //----------
   // Others (not appeared in the popup)
diff --git a/toonz/sources/toonz/CMakeLists.txt b/toonz/sources/toonz/CMakeLists.txt
index 5d9ebac..57407ca 100644
--- a/toonz/sources/toonz/CMakeLists.txt
+++ b/toonz/sources/toonz/CMakeLists.txt
@@ -448,6 +448,10 @@ if (WITH_CANON)
     add_definitions(-DWITH_CANON)
 endif()
 
+if (WITH_WINTAB AND BUILD_TARGET_WIN AND (PLATFORM EQUAL 64))
+    add_definitions(-DWITH_WINTAB)
+endif()
+
 if(BUILD_ENV_APPLE)
     include_directories(../../sources/mousedragfilter)
     if(PLATFORM EQUAL 64)
diff --git a/toonz/sources/toonz/main.cpp b/toonz/sources/toonz/main.cpp
index d1a54f9..adf7991 100644
--- a/toonz/sources/toonz/main.cpp
+++ b/toonz/sources/toonz/main.cpp
@@ -359,8 +359,9 @@ int main(int argc, char *argv[]) {
 
 #ifdef Q_OS_WIN
   //	Since currently OpenToonz does not work with OpenGL of software or
-  // angle,
-  //	force Qt to use desktop OpenGL
+  // angle,	force Qt to use desktop OpenGL
+  // FIXME: This options should be called before constructing the application.
+  // Thus, ANGLE seems to be enabled as of now.
   a.setAttribute(Qt::AA_UseDesktopOpenGL, true);
 #endif
 
@@ -677,6 +678,19 @@ int main(int argc, char *argv[]) {
     QWindowsWindowFunctions::setHasBorderInFullScreen(w.windowHandle(), true);
 #endif
 
+    // Qt have started to support Windows Ink from 5.12.
+    // Unlike WinTab API used in Qt 5.9 the tablet behaviors are different and
+    // are (at least, for OT) problematic. The customized Qt5.15.2 are made with
+    // cherry-picking the WinTab feature to be officially introduced from 6.0.
+    // See https://github.com/shun-iwasawa/qt5/releases/tag/v5.15.2_wintab for
+    // details. The following feature can only be used with the customized Qt,
+    // with WITH_WINTAB build option, and in Windows-x64 build.
+
+#ifdef WITH_WINTAB
+  bool useQtNativeWinInk = Preferences::instance()->isQtNativeWinInkEnabled();
+  QWindowsWindowFunctions::setWinTabEnabled(!useQtNativeWinInk);
+#endif
+
   splash.showMessage(offsetStr + "Loading style sheet ...", Qt::AlignCenter,
                      Qt::white);
   a.processEvents();
diff --git a/toonz/sources/toonz/preferencespopup.cpp b/toonz/sources/toonz/preferencespopup.cpp
index 38347ce..4c06345 100644
--- a/toonz/sources/toonz/preferencespopup.cpp
+++ b/toonz/sources/toonz/preferencespopup.cpp
@@ -1196,7 +1196,11 @@ QString PreferencesPopup::getUIString(PreferencesItemId id) {
       // Touch / Tablet Settings
       // TounchGestureControl // Touch Gesture is a checkable command and not in
       // preferences.ini
-      {winInkEnabled, tr("Enable Windows Ink Support* (EXPERIMENTAL)")}};
+      {winInkEnabled, tr("Enable Windows Ink Support* (EXPERIMENTAL)")},
+      {useQtNativeWinInk,
+       tr("Use Qt's Native Windows Ink Support*\n(CAUTION: This options is for "
+          "maintenance purpose. \n Do not activate this option or the tablet "
+          "won't work properly.)")}};
 
   return uiStringTable.value(id, QString());
 }
@@ -1967,6 +1971,9 @@ QWidget* PreferencesPopup::createTouchTabletPage() {
 
   lay->addWidget(enableTouchGestures, 0, 0, 1, 2);
   if (winInkAvailable) insertUI(winInkEnabled, lay);
+#ifdef WITH_WINTAB
+  insertUI(useQtNativeWinInk, lay);
+#endif
 
   lay->setRowStretch(lay->rowCount(), 1);
   if (winInkAvailable) insertFootNote(lay);
diff --git a/toonz/sources/toonzlib/preferences.cpp b/toonz/sources/toonzlib/preferences.cpp
index a18ac02..f8cd038 100644
--- a/toonz/sources/toonzlib/preferences.cpp
+++ b/toonz/sources/toonzlib/preferences.cpp
@@ -625,6 +625,8 @@ void Preferences::definePreferenceItems() {
   // TounchGestureControl // Touch Gesture is a checkable command and not in
   // preferences.ini
   define(winInkEnabled, "winInkEnabled", QMetaType::Bool, false);
+  // This option will be shown & available only when WITH_WINTAB is defined
+  define(useQtNativeWinInk, "useQtNativeWinInk", QMetaType::Bool, false);
 
   // Others (not appeared in the popup)
   // Shortcut popup settings