QT错误undefined reference to vtable for
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qt中 为了使用信号槽 ,添加Q_OBJECT宏,出现如下错误undefined reference to vtable for,两种解决方案
1 删除debug目录中的makefile文件,在从新编译
2 修改pro文件,以达到修给makefile文件的目的(添加删除,空行空格都可以,只要修改pro文件就行.重新编译。
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