This unit shows how to accomplish program to program communication through message passing. The trick is to create a custom message that only your apps can send and will respond to.
这个模块演示了如何通过信息传递来完成程序间的通信。方法是创建一个定制的消息,只有你的程序可以发送和响应。
来源: http://www.programmersheaven.com/zone2/cat302/16326.htm