Gtkmm Mozilla plugin using XEmbed

[Lassi Väätämöinen <lassi vaatamoinen tut fi>]

Hi,

has anyone been able to create gtkmm UI plugins into Mozilla (Firefox)  
browser.

I was going through the DiamondX example application, and by modifying  
the source code I was able to embed simple widgets, namely Gtk::Button  
and Gtk::Label into the browser window. However, using my own custom  
widgets derived from Gtkmm widgets, or even Gtk::Notebook fails. There  
is nothing shown in the browser.

The same kind of behavior is present even when trying the same thing  
with GTK2, buttons and labels work, but complex widgets fail. However,  
when querying widgets with GTK_WIDGET_REALIZED() for example the  
notebook seems to be realized (TRUE returned).

Am I missing something here? Gtkmm is initialized with  
init_gtkmm_internals() and I am not getting any error messages when  
running the embedded browser widget (I was having some errors before,  
though, as I did not call init_gtkmm_internals()).

So, if anyone has some working sample code having some larger widgets  
working, I would really appreciate you sharing this info!

Some related URLs:

https://developer.mozilla.org/en/XEmbed_Extension_for_Mozilla_Plugins
http://multimedia.cx/diamondx/

BR,
-Lassi