「Qt」从安装到放弃

记录 Qt/Qt Graphs/OpenGL 从安装到使用中遇到的问题。

Install

Windows

Linux

Python

pip install pyqt6 pyqtgraph pyopengl

Use

Windows

Linux

语法

踩坑

Solved: Could not load the Qt platform plugin “xcb” in "" even though it was found.

1. 控制台打开调试开关
   export QT_DEBUG_PLUGINS=1

2. 运行程序，定为类似如下的错误提示：加载 libqxcb.so 库时依赖存在问题
   QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" ...
   Cannot load library /usr/lib/qt/plugins/platforms/libqxcb.so: (/usr/lib/libxcb-xinerama.so.0: invalid ELF header)
   QLibraryPrivate::loadPlugin failed on "/usr/lib/qt/plugins/platforms/libqxcb.so" : "Cannot load library /usr/lib/qt/plugins/platforms/libqxcb.so: (/usr/lib/libxcb-xinerama.so.0: invalid ELF header)"
   qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.

3. 按照提示存在问题库的路径，查看其依赖（以实际Docker部署中为例）
   ldd /usr/local/lib/python3.12/site-packages/PyQt6/Qt6/plugins/platforms/libqxcb.so

   
4. 安装依赖
   apt update
   apt install -y libxcb-icccm4 libxcb-keysyms1

5. 再次检查，确认依赖完整