QMessageBox

 

 

  //错误对话框

        //QMessageBox::critical(this,"critical","错误");

        //信息对话框

        //QMessageBox::information(this,"critical","信息对话框");

        //警告对话框

        //QMessageBox::warning(this,"critical","警告对话框");

        //提问对话框

       if(QMessageBox::Close==QMessageBox::question(this,"ques","提问对话框",QMessageBox::Open|QMessageBox::Close|\

                              QMessageBox::Save|QMessageBox::Discard|QMessageBox::YesToAll,\

                              QMessageBox::Close))

       {

           qDebug()<<"提问对话框关闭了";

       };