gnome3 ignores icon theme set in the gtkrc

[gnome hupe me]

Hi everyone,

I have an application written in gtkmm-2.4. The application parses its 
custom gtkrc file which defines a custom icon theme to be used. However, 
the application uses the icon theme set in gnome-tweak-tool and does not 
want to use its custom icon theme. After a "killall 
gnome-settings-daemon", the icon theme is correctly displayed.

Do you have any solution to force gnome3 to use the custom icon theme 
defined in a specific application?

Thank you very much in advance.


Best,

Phil.

I am using debian testing.