code: func PixbufLoaderNewWithType(t string) (*PixbufLoader, error) {
  	var err *C.GError
  
  	cstr := C.CString(t)
  	defer C.free(unsafe.Pointer(cstr))
  
  	c := C.gdk_pixbuf_loader_new_with_type((*C.char)(cstr), &err)
  	if err != nil {
  		defer C.g_error_free(err)
  		return nil, errors.New(C.GoString((*C.char)(err.message)))
  	}
  
  	if c == nil {
  		return nil, nilPtrErr
  	}
  
  	return &PixbufLoader{glib.Take(unsafe.Pointer(c))}, nil
  }
docs: // PixbufLoaderNewWithType() is a wrapper around gdk_pixbuf_loader_new_with_type().