code: func (v *Entry) GetIconName(iconPos EntryIconPosition) (string, error) {
  	c := C.gtk_entry_get_icon_name(v.native(),
  		C.GtkEntryIconPosition(iconPos))
  	if c == nil {
  		return "", nilPtrErr
  	}
  	return goString(c), nil
  }
docs: // TODO(jrick) GdkPixbuf
  /*
  func (v *Entry) GetIconPixbuf() {
  }
  */
  // GetIconName() is a wrapper around gtk_entry_get_icon_name().