pub unsafe extern "C" fn gtk_style_context_lookup_icon_set(
context: *mut GtkStyleContext,
stock_id: *const c_char,
) -> *mut GtkIconSet
pub unsafe extern "C" fn gtk_style_context_lookup_icon_set(
context: *mut GtkStyleContext,
stock_id: *const c_char,
) -> *mut GtkIconSet