object of abstract class type “...“is not allowed

意思是抽象类定义对象是不允许的！

如果出现这样的报错，检查下你使用的类是不是有纯虚函数（=0），如果没有，检查下基类的所有派生类是不是在复制粘贴的时候把基类的=0一并复制了

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object of abstract class type “...“is not allowed

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