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未解析的外部符号“ public：虚拟结构QMetaObject const * __thiscall父对象
我从QObject继承了一个类： class Parent: public QObject { Q_OBJECT QObject* cl; public: Parent(QObject *parent=0):QObject(parent) { cl = NULL; } QObject* getCl() const { return cl; } void setCl(QObject *obj) { cl = obj; } }; 但是当我写： Parent ev; 我收到以下错误： main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall …