I cannot disable exporting an empty menubar, because exporting starts before realize (so, before menubar changes)

If you need help, I will provide it for you, because for me there is 2 features which should be in KDE for me:

1. Global Menu (for all protocols)
2. QGtkStyle (with GTK3 themes)

What about FIXME unity, what are you mean? I can fix appmenu-gtk-module for you.

O, some another note: You can generate menubar from appmenu.
For example, Nautilus:
It have 4 sections

1. New Window
2. Sidebar
3. Preferences
4. Keyboard Shortcuts Help About Quit.

1. Yes, menubar may be empty with appmenu-gtk-module or unity-gtk-module, and if I can fix appmenu-gtk-module, unity-gtk-module will not be fixed. So, I think it is preferred to check on your side.
2. GTK3 applications (file-roller, for example) can use both appmenu and menubar with different items (and different action) . So, I think, hiding appmenu is bad, because user may want this menu entries.

Thanks so much)

1. Unity is dead, but I forked unity-gtk-module, patched it for all distros, fixed some bugs and called appmenu-gtk-module. So, Unity is dead, but unity action prefixes is live.
2. To use unity-gtk-module or appmenu-gtk-module you need to install it into correct location (where all gtk modules is located) and then add its name (unity-gtk-module or appmenu-gtk-module) to environment variable called GTK_MODULES. If it will not working with appmenu-gtk-module, write me. unity-gtk-module maintainers is not so responsive.
3. Menu can use only application actions, only window actions and only unity actions. And all this are correct, as well as any combination of it (but not empty combination).

Hello, I am Konstantin, developer of vala-panel-appmenu. I have some comments about your application.