I took a look with the ListDLLs tool but couldn't actually find the plugin being used by the 32-bit version, maybe some other DLL is handling that? Anyway, my problem is now solved so I'll mark this topic as solved.

@SGaist thank your message, i solved it.

@mnesarco Cool. Would you mind marking the thread as solved, then?

@LeLev Yes. I have created some menus statically, hide/show them manually. Thank you.

Hi I think you action runs out of scope it seems to be local variable QAction actions[11]; and you take address of them so it does not copy but refernce inside the list listOfMenus[0].addAction(&actions[i]); but it looks to me like the actions[11]; lives in constructor and hence when Mainwindow is shown, they are all already deleted. Move the list to be a member of the class and see. Damn Pl45m4 beat me to it :)

@SGaist Thanks for the offer of looking over a code sample. I have found that by setting W to be a Qt::Popup rather than a Qt::Window, this solves my problem.

@martinrais Are you using an opengl based window? Maybe it is related to Fullscreen OpenGL Based Windows

That's not how it works and not something I would expect either. The mdi sub-windows will only extend in the mdi area, nothing more. The behavior you are looking for, you'll have to implement yourself.

Hi, IIRC, that's part of the GNOME Human Interface Guidelines so there's no much you can do from a Qt point of view.

Hello, That not the problem here. If i understand correctly, the OSX Application Menu is translated by Qt, not my application. The problem occurs only with QtQuick and on a OSX no-english. So why i must do give a translated file created by me for QtQuick and not for QtWidgets ? (And not the translated files qt) Regards, nelbok

Hi and welcome to devnet, Do you mean that if you use the qt_fr.qm file everything is going well but if you add your own translation it starts acting up ?ä

You're welcome ! SInce everything is OK now, please update the thread title prepending [solved] so other forum users may know a solution has been found :) Also, while browsing the forum, consider up-voting the answers that helped you, it will make them easier to find for other users :)

IIRC, having at first position allows the forum to show it more nicely on the lists

Hi, Did you put some actions within your menubar? IF not, the menubar is there, but empty, so almost invisible. If you are using the designer, it should be easy enough. Setting a layout is just clicking the top icons which layout you need. The resizing in designer is the resize you get in your end program. What happens if you open up an example and run it? Is there any difference between debug and release versions?