This application failed to start because noQt platform plugin could beinitialized. Reinstalling the application may fix this problem.

这个错误提示"This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem."通常是由于缺少Qt平台插件导致的。对于Windows系统上使用pyqt打开designer.exe报错的情况，解决方法是将"PyQt5"和"pyqt5_plugins"两个文件夹从"Python\Python311\Lib\site-packages"复制到Python\Python311\Lib安装目录下。这样可以确保Qt平台插件被正确初始化，从而解决该问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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