>>>>Hi
>>>>
>>>>I am trying to colse an application using the above api functions, but I always get a return value of zero, can you tel me what I am doing wrong
>>>>
>>>>lnOk=PostMessage (thisform.lnActiveWindowHandel, WM_CLOSE, 0, 0)
>>>>
>>>
>>>A few questions - what is in lnActiveWindowHandle (ie are you sure it's a valid handle?)
>>>
>>>What do you have defined as WM_CLOSE (are you sure the value is defined properly?)
>>>
>>>What is the error returned by GetLastError()?
>>>
>>>You should probably read the MSDN Library documentation on PostMessage() if you aren't sure of the answers; the information you give is inadequate to analyze the error.
>>
>>Ed,
>>
>>According to the SDK, an application processing the message will return zero.
>
>Actually, PostMessage() only indicates that the message is queued, not processed; the MSDN docs on PostMessage() show:

---

Return Values
>If the function succeeds, the return value is nonzero.
>
>If the function fails, the return value is zero. To get extended error information, call GetLastError.

Duh! PostMessage(). I was thinking of SendMessage(), which would return 0 if the message was processed.