窗口提示no qt platforms plugin could be initialized

  添加环境变量解决: add system environment QT_QPA_PLATFORM_PLUGIN_PATH C:\Qt\Qt5.12.2\5.

 

 

添加环境变量解决:
add system environment
QT_QPA_PLATFORM_PLUGIN_PATH
C:\Qt\Qt5.12.2\5.12.2\msvc2017_64\plugins\platforms