确定一个应用程序是否没有响应

　　今天在MSN的核心讨论组上看到两篇文章.讨论的乃是应用程序是否没有响应.原文如下:

　　 How is it possible to determine a process is "not responding" like NT Task

　　 Manager do？

　　The heuristic works only for GUI processes, and consists of calling

　　SendMessageTimeOut() with SMTO_ABORTIFHUNG.

　　There is any API call to do the job, or this status is simply a deduction

　　based on process counters, like that returned from call to GetProcessTimes

　　API function？

　　Use SendMessageTimeout with a value of WM_NULL. That's all Task

　　Manager does to determine this AFAIK.

　　--

　　有理有理.当然,我这里还有一个UNDOCUMENTED函数,乃是其他的解决方案,NT和9X有个USER32.DLL的函数,IsHungAppWindow(NT)和IsHungThread(9X).使用起来简便无比.下面给出原型.

　　BOOL IsHungAppWindow (

　　HWND hWnd, // handle to main app's window

　　);

　　BOOL IsHungThread (

　　DWORD dwThreadId, // The thread's identifier of the main app's window

　　);

　　有了原型,连解释都不需要,好得不的了.:)不过调用时需要GetProcAddress.库里没有该函数.