Problem with QProgressDialog

[wysota]

Sql query blocks your application so that the progress bar doesn't have a chance to update itself. You can experiment with executing the query in a thread.

[mvuori]

As far as I understand, at least the title should appear before going into the blocking part.

Perhaps the UI operations are cached and need some extra help. I have sometimes added a xxxxx.update() after a xxxxx.show() to make a widget visible.

[wysota]

As far as I understand, at least the title should appear before going into the blocking part.

No. For the window to appear, events need to be processed.

[Lesiok]

As far as I understand, at least the title should appear before going into the blocking part.

Perhaps the UI operations are cached and need some extra help. I have sometimes added a xxxxx.update() after a xxxxx.show() to make a widget visible.

After widget show add QCoreApplication::processEvents. But the best solution is to move SQL operations to another thread.

[anoraxis]

Ok, thanks. I will the sql part to another thread.

Another thing, in my case the title of the QProgressDialog is the only element that appears, the rest of the dialog is blank.