How to set QFileDialog's parent to a QQuickView

Question

The only window in my application is a QQuickView which is a subclass of QWindow, not of QWidget, so if I want to use a QFileDialog to give the user the option to save a file, I do not know how to set its parent to be the QQuickView. I know that the QFileDialog works without a parent, but if it does not have a parent, it is not centered over the QQuickView. This is not a big problem on its own, but on my OS (Ubuntu 13.10) a QFileDialog without a parent sometimes appears under the QQuickView window and the user sees only a “flashing” taskbar icon.

I use Qt 5.2. I initially tried to use the FileDialog type in the Qt Quick Dialogs module but it does not have some features I need (such as the defaultSuffix property).

Answer 1

Right, this is a serious problem of QML. You cannot utilize the QFileDialog because you don't have a QWidget app and FileDialog lacks some critical features.

See: FileDialog in QTQuick (QML): Save file under given name

At the moment we are using code from deep down in the Qt source code, which is not in the public API. It only requires a Window instead of a Widget to do modality right.

Maybe I can write a blog post about that over Christmas.