QMessageBox::question does not close when I click on X button

Qt Enthusiast

QMessageBox::question does not close when I click on X button but works when we have cancel button why so

Qt Enthusiast about 21 hours ago
I have following code

File dialog.h
class Dialog : public QDialog
{
Q_OBJECT

public:
Dialog(QWidget *parent = 0);

private slots:
void questionMessage();
};
Case1:

dialog.cpp
void Dialog::questionMessage()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, tr("QMessageBox::question()"),
MESSAGE,
QMessageBox::Yes | QMessageBox::No );

if (reply == QMessageBox::Yes)
qDebug() << "Yes";
else if (reply == QMessageBox::No)
qDebug() << "No";
else
qDebug() << "Cancel";
}
The issue is when I click on X mark at the top right then the QMessagebox does not get closed

Case2:

but If I have following code

void Dialog::questionMessage()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, tr("QMessageBox::question()"),
"MESSAGE",
QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);

if (reply == QMessageBox::Yes)
qDebug() << "Yes";
else if (reply == QMessageBox::No)
qDebug() << "No";
else
qDebug() << "Cancel";
}
If I put QMessageBox::Cancel then it is working fine . It will be helpful if someone can guide me why I am not able to close QMessageBox with X in Case1

The issue I am getting only when I have qt.4.3.3 build

VRonin

duplicate of https://forum.qt.io/topic/74991/qmessagebox-question-does-not-close-when-i-click-on-x-button-but-works-when-we-have-cancel-button-why-so/6