The nested type BoxChild' does not exist in the type Gtk.Box

[jordimas]

Hello,

I have a project called gbrainy (https://gitlab.gnome.org/GNOME/gbrainy) which I was able to compile with old gtk-sharp (https://github.com/mono/gtk-sharp).

When compiling with GtkSharp (version 3.22.2) throws this error:

/Widgets/Toolbar.cs(88,23): error CS0426: The nested type BoxChild' does not exist in the type Gtk.Box'

See: https://gitlab.gnome.org/GNOME/gbrainy/-/blob/master/src/Clients/Classical/Widgets/Toolbar.cs#L88

Does the BoxChild type has been removed by mistake or has been replaced by something else?

Since some Linux distros still distribute https://github.com/mono/gtk-sharp (Debian) and some others (e.g. Fedora) may start distributing GtkSharp, it will be great to maintain as much as possible compatibility with the gtk-sharp API.

[thiblahute]

Hi,

I am not sure when and why that happen, it would be very nice of you if you could check it?

[rosset]

Hi guys, this issue started to happen in Fedora when the gtkSharp was updated from version 2.99.3 (mono-project gtk-sharp) to this GLibSharp implementation per this commit -> https://src.fedoraproject.org/rpms/gtk-sharp3/c/f13bb1f4725d91ce6cbd85afe0298ae30a71763a?branch=rawhide

I'm sure that the gbrainy code were building fine against gtk-sharp3-2.99.3-34.fc37.x86_64, but now it's broken against gtk-sharp3-3.22.2-1.20220808git3.22.2.fc38

[jordimas]

I fixed in gbrainy by not using this class any more.

If you are not interested in understanding in investigating why this class disappeared, you can close the issue.

Thanks

[thiblahute]

I think it would be nice to do some archeologie to at least document the change here.

[jordimas]

For the record, I spent 1 hour and I was unable to understand why BoxChild is not generated with GtkSharp.