MainWindow doesnt show MenuBar

[JonB]

@Vadik
Oh, this is the first time you're saying the code works on some machines and not others?

[Vadik]

@JNBarchan yeah, I just forgot, allready corrected. Thanks for reminder.

[JonB]

@Vadik
So I would look at exactly what version of Qt libraries is being used on your machine versus other machines? Maybe they have a later version than your 5.5, and it will work then?

[Vadik]

@JNBarchan Allready reinstalled Qt up to 5.9.2 version. And still didn't help

[SGaist]

Hi,

Aren't you on Ubuntu ? If so, isn't your menu bar shown at the top of the screen macOS like ?

[JonB]

@SGaist
LOL if that's what OP means. I have my desktop preference set to show menus on windows, but the default is on system menu.

[Vadik]

This post is deleted!

[Vadik]

@Vadik YEEEEAH, solved, after some investigations and reinstalling of all components it turned out. Need to change in 'System Settings -> Appearance -> Behavior' parameter for 'Show the menus for a window' from the "In the menu bar" to "In the window's title bar". Thanks to everyone who tried to help.

[medyakovvit]

@JNBarchan Question is solved, but as you asked.
I don't think it's needed as he gets pointer to menu bar with:

QMenuBar *mb = menuBar();

and this function returns the menu bar that already set.

[JonB]

@medyakovvit
Yeah, I kinda mis-read (C++ not being my language) it as having been:

QMenuBar *mb = new QMenuBar();

thinking he was creating his own new one which would need setting. Using the existing menubar and changing its content is of course preferable.