Avalonia : Hiding titlebar window on Linux does not work

user_12924934 0
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I'm using avalonia (version 0.10.3 - but the same happened with 0.10.0 - on Net5.0 project) as the UI for a project and when I create for instance a splash or an about screen, the title bar must be invisible.

On windows this works just fine with these parameters in the window section :

CanResize="False"
ExtendClientAreaToDecorationsHint="True"
ExtendClientAreaChromeHints="NoChrome"
ExtendClientAreaTitleBarHeightHint="0"

Unfortunately, on Linux (mint - latest version with latest updates), the title bar remains visible (also if I set ExtendClientAreaTitleBarHeightHint="-1").

Is this a known issue or am I doing something wrong ?

I do not have a mac, but is that also the case for mac ?

avalonia avaloniaui titlebar
1 Answers

X11 uses so-called "server decorations". Window frame is drawn by a window manager in a separate process, so it's not really possible to extend into that area.

You can still disable the frame completely and draw your own, but in general it's not really recommended since you will break advanced window interactions in basically every non-GNOME based Linux distro (GNOME doesn't care because it doesn't have any advanced window interactions).

In some future version Avalonia would use a custom-drawn frame for GNOME with a configuration option to ignore your user's preferences in favor of a fancy looking window border for other desktop environments as well, but it's not implemented yet.

user_22318140
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