Re: Opacity not working in Form_Open (gtk)

[Benoît Minisini <benoit.minisini@xxxxxxxxxxxxxxxx>]

Le 15/04/2025 à 20:01, Benoît Minisini a écrit :
> Le 15/04/2025 à 14:12, Bruce Steers a écrit :
> >     Mmm... I'm not sure that setting the opacity after the window has 
> > been
> >     shown will work with all window managers.
> >
> >     --     Benoît Minisini.
> >
> >
> > I am finding quite the opposite.
> > I am able to change it once the program has loaded.  (for example with 
> > a slider)
> >
> > Trying to set it before the window is shown is where the troubles are.
> > (it used to work okay, something must have changed)
> >
> > Respects
> > BruceS
>
> If you set the opacity during the Open event, everything works perfectly 
> in all components when using KDE window manager and X11.
>
> If you set the opacity only in the property sheet, i.e. during the 
> window instanciation, it works for all components except GTK+3.
>
> I will look at the last problem, but I guess you have to move to a 
> window manager that supports the Opacity property (it's purely a 
> compositor thing).
>
> I will test if it works with Wayland, but there is always a doubt with 
> that beast. :-(
>
> Regards,

Lol. With wayland it works only with GTK+2 and GTK+3, and what didn't 
work with GTK+3 now works.

So it's not just the window manager. It's more horrible than that, as 
even Qt with KDE window manager / Wayland, it does not work.

Go figure that madness.

If you need a workaround, you can set the background color of your 
window to a transparent color. But then the title bar will stay opaque.

Regards,

--
Benoît Minisini.