a #GtkStyleContext
the #GtkIconSource specifying the icon to render
the size (#GtkIconSize) to render the icon at. A size of (GtkIconSize) -1 means render at the size of the source and don’t scale.
a newly-created #GdkPixbuf containing the rendered icon
Deprecated: Use gtk.icon_theme.IconTheme.loadIcon instead.
Renders the icon specified by source at the given size, returning the result in a pixbuf.