code: func (v *Editable) GetChars(startPos, endPos int) string {
  	c := C.gtk_editable_get_chars(v.native(), C.gint(startPos),
  		C.gint(endPos))
  	defer C.free(unsafe.Pointer(c))
  	return goString(c)
  }
docs: // GetChars is a wrapper around gtk_editable_get_chars().