当前位置：网站首页>'function vtable for error: undefined reference to ... ' 问题的原因及解决方法
'function vtable for error: undefined reference to ... ' 问题的原因及解决方法
2022-07-29 05:26:00 【sg-expert】
QT中,类要支持信号与槽机制,需要继承自QObject并在头文件开头添加Q_OBJECT宏.
如果使用QtCreator创建类时,没有选择继承自QObject类或其子类,而在创建后手工修改继承自QObject并手工添加Q_OBJECT宏,则在编译时有可能会出现"function vtable for error: undefined reference to … " 错误.
解决方法: 把新创建的类文件从项目中移除(不要从磁盘上删除),然后再添加进项目工程,QtCreator就会重新解析此类,再编译就不再会出现上述错误.
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