#include "mainwindow.h"

 #include <QApplication>

 #include <QPushButton>>

 //重载的三种形式,成员函数重载

 //友元函数重载,可以使用私有变量以及保护变量

 //一般函数重载都是公有变量

 class buttons

 {

     QPushButton *p;

     int n;

 public:

     buttons():n()

     {

         p = new QPushButton[];

         for(int i=;i<;i++)

         {

             p[i].resize(,);

             p[i].move(i*,i*);

             p[i].show();

         }

     }

     ~buttons()

     {

         delete[] p;

     }

     //重载[]

     QPushButton *operator [](int i)

     {

         if(i>= && i<=n-)

         {

             return this->p+i;

         }

     }

     //重载*

     QPushButton *operator *()

     {

          return this->p;

     }

     //重载->

     QPushButton *operator ->()

     {

          return this->p+;

     }

     //重载->*

     QPushButton *operator ->*(int i)

     {

          return this->p+i;

     }

 };

 int main(int argc, char *argv[])

 {

     QApplication a(argc, argv);

     buttons bs;

    // bs[3]->hide();

    // (*bs+2)->hide();

     //bs->hide();

    // bs->*hide();

     (bs->*)->hide();

     return a.exec();

 }