Cannot see QtMessage button

[elshorbagy76]

I created a button to show a message box when user clicks on it:

void MainWindow:n_pushButton_clicked()
{
int ret = QMessageBox::warning(this, "Exit?",
"Exit the application?",
QMessageBox::Yes | QMessageBox::No);

if(ret==0)
QApplication::exit(0);
}

The messagebox pops up but I cannot see the messagebox buttons (Yes or no) on the screen.

[somnathbanik]

try this code

 QMessageBox msgBox;
 msgBox.setText("The document has been modified.");
 msgBox.setInformativeText("Do you want to save your changes?");
 msgBox.setStandardButtons(QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
 msgBox.setDefaultButton(QMessageBox::Save);
 int ret = msgBox.exec();

For handling the button events deal in switch case

 switch (ret) {
   case QMessageBox::Save:
       // Save was clicked
       break;
   case QMessageBox::Discard:
       // Don't Save was clicked
       break;
   case QMessageBox::Cancel:
       // Cancel was clicked
       break;
   default:
       // should never be reached
       break;
 }

[danhicksbyron]

Is the problem that the buttons aren't there, or that they're off the screen?

Note that by using "this" on the QMessageBox::warning factory method you "anchor" the box to the window rather than allowing it to float. This is apt to skew the location of the box.

[Fuzzbender]

What Qt release you are using?
Is the parent window for the dialog fullscreen?

If your parent is fullscreen and this is happening in pre-Qt4.7.3, then it might be related to this one: http://bugreports.qt.nokia.com/browse/QTBUG-4953
Good news is that it should be fixed in Qt4.7.3.

[elshorbagy76]

Thank you, it works fine. I guess the problem was within my code .