警告对话框

相关代码

错误对话框

相关代码

消息对话框

相关代码

询问对话框

相关代码

相关代码

警告对话框

   QMessageBox::warning(this,"错误","账号密码不能为空",QMessageBox::Ok);

错误对话框

QMessageBox msgBox(QMessageBox::Critical,"错误","检查密码或者账号是否正确",QMessageBox::Ok,this);
        msgBox.exec();

消息对话框

    msgBox=new QMessageBox;
    msgBox->setText("成功");
    msgBox->setIcon(QMessageBox::Information);
    msgBox->setStandardButtons(QMessageBox::Ok);
    msgBox->exec();

询问对话框

    QMessageBox msgbox(QMessageBox::Question,"退出","确定要退出吗?",QMessageBox::Yes|QMessageBox::No,this);
    msgbox.setButtonText(QMessageBox::Yes,"是的");
    msgbox.setButtonText(QMessageBox::No,"再想想");
    int res=msgbox.exec();