如何实现一个文件被程序B打开后,程序B关闭该文件,程序A可以得到该文件已经被程序B关闭了

Question

我有一个程序A,用户可以通过程序A调用系统函数:ShellExecute让系统自动通知程序B打开用户需要操作的文件,我想实现,

1.当程序B打开了这个文件后,我的程序A可以得到通知或者感知到

2.当程序B关闭了这个文件后,我的程序A也可以得到通知或者感知到

备注:

1.一个文件是可以在非独占模式下,是可以同时被多个程序打开的

请问上述功能我该如何使用Visual C++实现呢?

Answer 1

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