This paper introduces the principle of DDE of Windows in detail and gives an example about exchanging city population data between server aplication (Borland C3.1) and client application (FoxPro2. 5).

• 本文对WINDOWS的DDE动态数据交换原理作了较详细介绍；给出了DDE服务器应用程序(BORLANDC3.；1)和客户应用程序(FOXPRO2