Qt 運行時報錯 This application failed to start because no Qt platform plugin could be initialized!

問題 運行時報錯: This application failed to start because no Qt platform plugin could be initialized! 如圖: 描述: 代碼沒有問題,我換成其他構件就正常了。如 5.12.7 解決方案: 環境變量中加入:QT_PLUGIN_PATH QT_PLUGIN_PATH=D:\Qt\Qt_SDK\5.12.6\msvc2
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