The contents this article mainly introduces are as follow: In the course of Delphi programming, how to make application program run only once and forbid it be loaded and run for more times by using two kinds of Windows API function.

• 介绍在 delphi编程中怎样利用两种Windows API函数实现应用程序“唯一”运行，禁止应用程序的多次加载运行。