QFileDialog::DontConfirmOverwrite doesn't seem to work

gabello306

I am having trouble with QFileDialog::DontConfirmOverwrite. I doesn't seem to work properly. I have tried setting a couple of different methods and I still get the confirmation box. I want to display my own QMessageBox instead of the default overwrite box. I have tried the following:

    QFileDialog file;
    file.setOptions(QFileDialog::DontConfirmOverwrite);
    QString filename = file.getSaveFileName( this, tr ( "Save As" ),
        m_pGlobal->currDirectory, tr ( "All Files (*.*)" ) );

and

QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"), 
    m_pGlobal->currDirectory, tr("All Files (*.*)"),
    nullptr, QFileDialog::DontConfirmOverwrite);

Both of these options display the Confirm Overwrite box. Any ideas on how to get rid of it? I am using Redhat 9 and Qt 5.

JonB

QFileDialog::getSaveFileName() is static so the first sample code isn't going to respect DontConfirmOverwrite. But second example looks right.

Is it using the Qt or your native dialog? Try QFileDialog::DontConfirmOverwrite | QFileDialog::DontUseNativeDialog? Does it make any difference if you make the first code with the instance work (by going via exec())?

gabello306

The exec on the first code doesn't work. The exec executes after the response from the getSaveFileName. The DontUseNativeDialog works as it doesn't put up the overwrite message, but the style is all wrong on the menu.. Is there a way to change the style of the menu?

JonB

@gabello306
So the implication is:

By default it's using your native windowing system and I presume either that does not support the "suppress overwrite" warning or the Qt call to it is not right. I don't know which.
If you use DontUseNativeDialog that uses Qt code and correctly suppresses the warning. But the style will be quite different from the native dialog. You don't like it, and I don't know how much you can restyle it. It won't look the same as the native one.