# Qt VirtualKeyboard 支持中文

## 1. 概述

Qt VirtualKeyboard 不需要输入法做后端，其以插件插件形式提供功能，库安装在 <QT>/plugins/virtualkeyboard 目录下，中文拼音输入法由 qtvirtualkeyboard_pinyin.dll/qtvirtualkeyboard_pinyin.so 提供功能。

Qt VirtualKeyboard 相关目录如下：

| Item | Desktop install path | Boot2Qt install path |
|------|----------------------|----------------------|
| qtvirtualkeyboardplugin           | \<QT_INSTALL_PLUGINS\>/platforminputcontexts      | /system/plugins/platforminputcontexts      |
| qtvirtualkeyboardextensionplugin  | \<QT_INSTALL_PLUGINS\>/virtualkeyboard            | /system/plugins/virtualkeyboard            |
| qtvirtualkeyboardplugin QML files | \<QT_INSTALL_QML\>/QtQuick/VirtualKeyboard        | /system/qml/QtQuick/VirtualKeyboard        |
| qtvirtualkeyboardstylesplugin     | \<QT_INSTALL_QML\>/QtQuick/VirtualKeyboard/Styles | /system/qml/QtQuick/VirtualKeyboard/Styles |

Ubuntu 系统 apt 安装该组件不支持中文拼音输入，需要卸载 Qt VirtualKeyboard 组件后自行通过官方源码编译安装。在 <https://download.qt.io> 的不同 official releases 中的 submodules 下可以找到不同版本的源码，例如，对应 Qt 5.15.10 的 VirtualKeyboard 下载连接如下：

- [qtvirtualkeyboard-everywhere-opensource-src-5.15.10.zip](https://download.qt.io/official_releases/qt/5.15/5.15.10/submodules/qtvirtualkeyboard-everywhere-opensource-src-5.15.10.zip)
- [qtvirtualkeyboard-everywhere-opensource-src-5.15.10.tar.xz](https://download.qt.io/official_releases/qt/5.15/5.15.10/submodules/qtvirtualkeyboard-everywhere-opensource-src-5.15.10.tar.xz)

## 2. 配置和编译

解压源码并 cd 到源码目录后：

```
sudo apt install libxcb-xfixes0 libxcb-xfixes0-dev
qmake CONFIG+="lang-en_US lang-zh_CN"
make
sudo make install
```

即可。