Delphi:Delphi防止程序多次运行，禁止一个程序多次打开，如图所示的程序中，同时只能运行一个实例，当你再次打开的时候会有弹出一个提示，你只能关闭这个提示，以前发过类似的Delphi源码，由不同的Delphi爱好者所写。

-Delphi: Delphi prevent multiple runs of the program, a program that repeatedly banned open, as shown in the program, but can only run one instance, when you open it again, there will be a pop-up prompts, you can turn off this prompt, Delphi previously sent a similar source, written by different Delphi enthusiasts.