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並前往https://cloud.tencent.com/developer/ask/65072/answer/110725

问答 - 腾讯云

main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall Parent::metaObject(void)const ...

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查詢 「QMetaObject」的人也找了：

  1. qmetaobject::invokemethod
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  4. Q_ENUM
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  5. Qt connect
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  6. QObject
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  7. Q_GADGET
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  8. deleteLater
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