error: undefined reference to `XXX::XXX(type1, ypte2)
moc_fortunethread.cpp:100: error: undefined reference to `FortuneThread::GetToParentThread(QString, QString)'
collect2.exe:-1: error: error: ld returned 1 exit status
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信号曹未添加实现而引起的错误,添加实现后错误立即消失。holy shit !!!