How to close a CVI Application from VC++ Aplication

[Wilbert]

I am trying to close a CVI application from a VC++ 6.0 application, But I can.

I tried with DestroyWindows(); PostMessage(hwnd, WM_CLOSE, 0,0) and Still I can not doit.

Can somebody help me.

Thanks

[Marco Turra]

You shuld use RegisterWinMsgCallback in CVI to catch Windows standard
messages.


--
Marco Turra
Soft. Department

HI-TEC S.r.l.
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E-mail : marco.turra@hi-tec.it


"Wilbert" wrote in message
news:50650000000800000043E70000-1079395200000@exchange.ni.com...
> I am trying to close a CVI application from a VC++ 6.0 application,
> But I can.
>
> I tried with DestroyWindows(); PostMessage(hwnd, WM_CLOSE, 0,0) and
> Still I can not doit.
>
> Can somebody help me.
>
> Thanks

[JuanCarlos]

Hi,

you may want to give the main callback a try. CVI can install a callback for external messages that are sent to the application. You need to call InstallMainCallback() to set this callback up and you should get a EVENT_END_TASK when VC++ send the terminate message.

There is more information on this in the following document: How Do I Programmatically Detect If a User Pressed 'Ctrl-Alt-Delete' in LabWindows/CVI?

Let me know if you have any further questions.

Regards,

Juan Carlos
N.I.

[Wilbert]

Do you have a Sample in National Instrument Site ?

[JuanCarlos]

Hi,

I could not find any examples on our website; however I created a small example for you. The main caveat on doing this is the window the name that you use for FindWindow().

If you get a handle of the panel, the panel closes but the application is still active. To close the application and get the EVENT_END_TASK you must get a handle to the CVI application. So you must pass to FindWindow the name of the project.

There are 2 CVI projects here, the project MainCallback demonstrates how to use the main callback and quits the application by posting a close message. The second project just posts the message to close the application.

Please take a look at these projects and let me know if you have any further questions.

Regar
ds,

Juan Carlos
N.I.

[Wilbert]

Juan Carlos.

Thanks for your help, Let me check te files and I tell you if its work.

[JuanCarlos]

Any time, I'll keep an eye on this posting.

Good luck with your project.

J.C.