Gtk::Entry - cant change bg_color

[thom_schu gmx de]

Hello,
Im trying to change the background-color of an Gtk::Entry.
After trying to  change the color without success with "entry->modify_bg()",
I searched for help in the gtkmm-list and found that the solution is
"entry->modify->base()", but also this didnt work for me.
After testing many ways without success I came to the follow solution :

Glib::RefPtr<Gtk::RcStyle> style = Gtk::RcStyle::create();
Gdk::Color color;
color.set_rgb(60000, 60000, 60000);
entry->modify_style(myStyle); 
entry->modify_base(Gtk::STATE_INSENSITIVE, color);

So after I set a new RcStyle-Object for the entry-Object I was finally able
to change the background-color. (want a grayed out entry, if entry is
deactivated ...)
But this doenst still satisfy me, because first I think this can not be the
right way to change the background-color and second this way gives the entry
a new appearance.( another border with shadow ......)

thanks in advance

gizmo

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