Stop Labview with DLL

[Bruce Kingsley]

I've written a DLL that LabView calls for many different functions.

In case of a major problem, I would like my DLL to be able to tell LabView
to stop execution of the program. Is there a hook of some type in LabView
that can do this or a window message I can post to LabView?

Bruce Kingsley
brucek@wolfenet.com

[Kevin_work]

Bruce Kingsley wrote:

> I've written a DLL that LabView calls for many different functions.
>
> In case of a major problem, I would like my DLL to be able to tell LabView
> to stop execution of the program. Is there a hook of some type in LabView
> that can do this or a window message I can post to LabView?
>
> Bruce Kingsley
> brucek@wolfenet.com

I would hope that you are returning error codes from your DLL calls.
If this is true then you can use that code along with either the
Error Handler, or possibly the LV built in "STOP" , "ABORT"
functions.

Kevin Kent

[Bruce Kingsley]

Ken:

Thanks for the response.

The problem is more complex. The DLL is shared by more than just LabView
which makes the DLL aware of events that that LabView may not see; example:

LabView maybe performing file I/O or running a panel, but not calling my
DLL, so there is no error code to return. Since the DLL is always watching
things, it may detect an event that requires LabView to stop.


Bruce Kingsley
brucek@wolfenet.com



Kevin B. Kent wrote in message <3870FD6D.2E8B1AFD@usa.alcatel.com>...
>Bruce Kingsley wrote:
>
>> I've written a DLL that LabView calls for many different functions.
>>
>> In case of a major problem, I would like my DLL to be able to tell
LabView
>> to stop execution of the program. Is there a hook of some type in LabView
>> that can
do this or a window message I can post to LabView?
>>
>> Bruce Kingsley
>> brucek@wolfenet.com
>
>I would hope that you are returning error codes from your DLL calls.
>If this is true then you can use that code along with either the
>Error Handler, or possibly the LV built in "STOP" , "ABORT"
>functions.
>
>Kevin Kent
>

[.]

Could you have your DLL set a flag on an error condition? If so, your
Labview code could check the flag as often as you like, perhaps in a
parallel While loop.




On Mon, 3 Jan #000 16:39:49 -0800, "Bruce Kingsley"
wrote:

>Ken:
>
>Thanks for the response.
>
>The problem is more complex. The DLL is shared by more than just LabView
>which makes the DLL aware of events that that LabView may not see; example:
>
>LabView maybe performing file I/O or running a panel, but not calling my
>DLL, so there is no error code to return. Since the DLL is always watching
>things, it may detect an event that requires LabView to stop.
>
>
>Bruce Kingsley
>brucek@wolfenet.com
>
>
>
>Kevin B. Kent wrote in message <3870FD6D.2E8B1AFD@usa.alcatel.com>...
>>Br
uce Kingsley wrote:
>>
>>> I've written a DLL that LabView calls for many different functions.
>>>
>>> In case of a major problem, I would like my DLL to be able to tell
>LabView
>>> to stop execution of the program. Is there a hook of some type in LabView
>>> that can do this or a window message I can post to LabView?
>>>
>>> Bruce Kingsley
>>> brucek@wolfenet.com
>>
>>I would hope that you are returning error codes from your DLL calls.
>>If this is true then you can use that code along with either the
>>Error Handler, or possibly the LV built in "STOP" , "ABORT"
>>functions.
>>
>>Kevin Kent
>>
>
>