Function gdk_pixbuf_sys::gdk_pixbuf_save_to_callbackv

pub unsafe extern "C" fn gdk_pixbuf_save_to_callbackv(
    pixbuf: *mut GdkPixbuf, 
    save_func: GdkPixbufSaveFunc, 
    user_data: gpointer, 
    type_: *const c_char, 
    option_keys: *mut *mut c_char, 
    option_values: *mut *mut c_char, 
    error: *mut *mut GError
) -> gboolean