C++自定义的类继承QObject

xxx.h

#ifndef AAA_H
#define AAA_H
#include <QObject>


class AAA : public QObject
{
    Q_OBJECT
public:
    explicit AAA(QObject *parent = nullptr);
    int a;
signals:


};

#endif // AAA_H

xxx.cpp

#include "aaa.h"

AAA::AAA(QObject *parent) : QObject(parent)
{

}

注意

这个时候点运行按钮依然会报错，需要将编译出来的文件全部删除，然后点🔨仅编译，不要运行