非常感谢zhengjialon你再一次帮助,但下面这句英文看了半天没有能理解,希望大哥再解释一下 When an Access control on a form receives the focus, it becomes a true window and it's possible to retrieve it's handle by using the GetFocus API. Note that because Access controls do not behave like VB controls, there's not a whole lot that we can do with the hWnd.