About:config option to enable or disable Menu Bar?
I am looking update my workstations to ESR 45 and in the Mozilla.cfg file add a line to turn on the Menu Bar for all devices. Is their an option I can use to enable the Menu Bar?
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Mike Kaply's blog send you to here in the code to make changes to the menu bar however please see this article for more information: https://mike.kaply.com/2015/08/25/using-hidden-ui-in-the-cck2/
You can't hide or show the Menu bar via a pref on the about:config page. It isn't easy to make the Menu bar show as this is done via by setting an inactive attribute via JavaScript that set the height to 0px as you can see via the DOM Inspector.
Note that you can run privileged JavaScript via mozilla.cfg, but I do not know what you would need to make the Menu bar visible.
This works in the Browser Console:
var menubar = document.getElementById("toolbar-menubar");
setToolbarVisibility(menubar, true);
//setToolbarVisibility(menubar, false);
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