QT在debug环境下的异常报错 This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

 

查看错误信息：试试Release 检查 控制台 (/SUBSYSTEM:CONSOLE) 输入错误信息,修改全部报错信息后再试试Debug模式可不可以运行。

 

方案一:高级系统设置-环境变量- QT_QPA_PLATFORM_PLUGIN_PATH C:\Qt\Qt5.12.12\5.12.12\msvc2017_64\plugins
这个方案会带来另一个问题,HDevelop.exe 运行报错(优先使用系统的环境变量目录???)
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

 

方案二:项目属性 配置属性->调试->环境 QT_QPA_PLATFORM_PLUGIN_PATH=C:\Qt\Qt5.12.12\5.12.12\msvc2017_64\plugins