Grey out background windows while editing a dialog.

[anda_skoa]

One possible way could be an event filter.
E.g. implement the eventFilter method in your main window and install it as an even filter on the QApplication object.

In the filter function check for show and hide events. if the object passed to the filter function inherits from QDialog, show/hide the "cover" widget accordingly.

I guess you want to support Windows XP, which doesn't have that kind of effect, right?

Cheers,
_

[Yevgen]

Hmm, that is a nice idea.

The XP is one of the target plattforms, however, it would be not so bad, if it does not work on xp.

Thanx

[anda_skoa]

I was mentioning XP because I think this is the only desktop platform which does not use compositing effects.
All of the more modern platforms have these kinds of effects built-in, so adding something manually might actually interfere.

Cheers,
_