QMessageBox的用法

voidMessageBox::slotQuestion()

{

switch(QMessageBox::question(this,"Question",tr("It's end of document,search from begin?"), QMessageBox::Ok|QMessageBox::Cancel,QMessageBox::Ok))

{

caseQMessageBox::Ok:

label->setText(" Question button / Ok ");

break;

caseQMessageBox::Cancel:

label->setText(" Question button / Cancel ");

break;

default:

break;

}

return;

}

voidMessageBox::slotInformation()

{

QMessageBox::information(this,"Information",tr("anything you want tell user"), QMessageBox::Ok);

return;

}

voidMessageBox::slotWarning()

{

switch(QMessageBox::warning(this,"Warning",tr("Save changes to document?"),

QMessageBox::Save|QMessageBox::Discard|QMessageBox::Cancel,QMessageBox::Save)) {

caseQMessageBox::Save:

label->setText(" Warning button / Save ");

break;

caseQMessageBox::Discard:

label->setText(" Warning button / Discard ");

break;

caseQMessageBox::Cancel:

label->setText(" Warning button / Cancel ");

break;

default:

break;

}

return;

}

voidMessageBox::slotCritical()

{

QMessageBox::critical(this,"Critical",tr("tell user a critical error")); label->setText(" Critical MessageBox ");

return;

}

voidMessageBox::slotAbout()

{

QMessageBox::about(this,"About",tr("Message box example!")); label->setText(" About MessageBox ");

return;

}

voidMessageBox::slotAboutQt()

{

QMessageBox::aboutQt(this,"AboutQt");

label->setText(" About QtMessageBox ");

return;

}