bug#31968: 26.1.50; Allow to hide title bar on maximize (gtk/gnome/csd)

[martin rudalics]

>> Yes, but the point is to hook something like that on
>> maximized/unmaximized events, which I don't see how to do.
>
> Since maximizing a frame changes the window size, couldn't you hook
> into window-size-change-functions to achieve the desired effect?
> Something like this perhaps:
>
> (defun hide-titlebar-when-maximized (frame)
>    (if (eq 'maximized (alist-get 'fullscreen (frame-parameters frame)))
>        (set-frame-parameter frame 'undecorated t)
>      (set-frame-parameter frame 'undecorated nil)))
>
> (add-hook 'window-size-change-functions 'hide-titlebar-when-maximized)

Wouldn't that show the title bar when making the frame fullscreen via
F11?

martin