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引用楼主u332744于2011-10-03 16:27发表的 错误:invalid use of 'this' in non-member function :connect (pFtp,SIGNAL(commandFinished(int,bool)),this,SLOT(slotFtpCmdFinished(int,bool)));这里面this是什么呀,我不是在类里面用这个函数,而是全局函数