Hi,

I have the following code;

Qt Code: 
  1. void GroupChatViewController::closeEvent(QCloseEvent* event)
  2. {
  3. 	QMessageBox* msgBox = new QMessageBox(0);
  4. 	msgBox->setAttribute(Qt::WA_DeleteOnClose);
  5. 	msgBox->setWindowTitle(tr("Quit Group Chat?"));
  6. 	msgBox->setText(tr("Are your sure to quit from group chat?"));
  7. 	msgBox->setIcon(QMessageBox::Question);
  8. 	QPushButton* yesButton = msgBox->addButton(tr("Yes"), QMessageBox::AcceptRole);
  9. 	QPushButton* noButton = msgBox->addButton(tr("Cancel"), QMessageBox::RejectRole);
  10. 	msgBox->setDefaultButton(noButton);
  11. 	msgBox->exec();
  12.  
  13. 	if(msgBox->clickedButton() == noButton) 
  14. 	{
  15. 		msgBox->close();
  16. 		return;
  17. 	}
  18. 	else if(msgBox->clickedButton() == yesButton)
  19. 	{
  20. 	    if(_groupImSession)
  21. 		{
  22. 			if(_groupImSession->_groupImSessionEstablished)
  23. 			{
  24. 				_groupImSessionManager->closeGroupImSession(_groupImSession);
  25. 			}
  26. 		}
  27.  
  28. 		QWidget::closeEvent(event);	
  29. 	}
  30. }
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The message diaolog appears but the problem here is program doesn't advance neither when I click noButton nor yesButton.