moz0803ex.txt

来自「mozilla developer book examples.」· 文本 代码 · 共 8 行

QueryInterface: function (iid)
{
  if(!iid.equals(Components.interfaces.nsISimple)
       && !iid.equals(Components.interfaces.nsISupports))
      throw Components.results.NS_ERROR_NO_INTERFACE;
  return this;
}