请问QT如何实现类似于MFC下的messagebox

[zhangnanonnet]

请问QT如何实现类似于MFC下的messagebox

[walnutht]

现成的QMessageBox类。。。。。。
例子：
QMessageBox *mb;
switch(warninglevel)
{
case 0:mb=new QMessageBox(captiontitle_string,contex_string,QMessageBox::Information,QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton );
break;
case 1:mb=new QMessageBox(captiontitle_string,contex_string,QMessageBox::Question,QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton );
break;
case 2:mb=new QMessageBox(captiontitle_string,context_string,QMessageBox::Warning,QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton );
break;
case 3:mb=new QMessageBox(captiontitle_string,context_string,QMessageBox::Critical,QMessageBox::Ok,QMessageBox::NoButton,QMessageBox::NoButton );
break;
}
mb->show();