How can I close an application and receive QueryUnload event

[Snamelisch]

I like to close application via an API call.

I think it is possible using the PostMessage API, but all examples use WM_Close, for example:

RetVal = PostMessage(winHwnd, WM_CLOSE, 0&, 0&)

This always results in immediatly closing the application without the form_QueryUnload and form_unload events taking place.

So unfinished business stays unfinished.

The application I like to close needs to have the ability to reject my request to close it. Hence I need the Query_unload event.

Thanks for answer.

[Megatron]

try:

SendMessage hwnd, WM_SYSCOMMAND, SC_CLOSE, 0

[Snamelisch]

Correct my previous statement.

Although I have tested this problem many times (I always had the same results), Microsoft does use WM_CLOSE in an (now) excellent example.

For those who are interested, it has the code Q242308 and can be found on their site. (try this url: http://support.microsoft.com/default...;en-us;Q242308)

[Megatron]

So WM_CLOSE worked?

[Snamelisch]

Yep, but what I don't know, why it did not work previously.

Ah well...