gtk3 layout background image

[Rúben Rodrigues <ruben_gr live com pt>]

Hi guys,

Finnaly i migrate my application to gtk+3. So, now i neet to change some 
things like image background. I used css provider like in this :

custom.css file:

GtkLayout:layout_Home{
     background-color: black;
}


C Program:

GFile *file= g_file_new_for_path("custom.css");
         GtkCssProvider *css_provider = gtk_css_provider_get_default();
         gtk_css_provider_load_from_file(css_provider, file, &error);
         GtkStyleContext *context = gtk_style_context_new();
         gtk_style_context_add_provider(context, 
GTK_STYLE_PROVIDER(css_provider),GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);

But nothing happens. I tried this too:

http://stackoverflow.com/questions/7375624/gtk3-window-background-image


Someone can help me?


THanks