本文介紹了未解析的外部符號(hào)“public: virtual struct QMetaObject const * __thiscall Parent的處理方法，對(duì)大家解決問(wèn)題具有一定的參考價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)吧！
問(wèn)題描述
我從 QObject 繼承了一個(gè)類(lèi):
I inherited a class from QObject :
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;
}
};
但是當(dāng)我寫(xiě):
Parent ev;
我收到以下錯(cuò)誤:
main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall Parent::metaObject(void)const " (?metaObject@Parent@@UBEPBUQMetaObject@@XZ)
main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual void * __thiscall Parent::qt_metacast(char const *)" (?qt_metacast@Parent@@UAEPAXPBD@Z)
main.obj:-1: error: LNK2001: unresolved external symbol "public: virtual int __thiscall Parent::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@Parent@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
推薦答案
您應(yīng)該刪除應(yīng)用程序的 debug 文件夾，然后再次運(yùn)行以解決此問(wèn)題.
You should delete the debug folder of your application and run it again to correct this problem.
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