Calling LabVIEW activex application from Matlab

Hi All,
I am having trouble calling a vi and passing parameters to it using ActiveX calls.
I tried 2 methods to call the vi using ActiveX but none of them works. I have described the 2 methods below.
Method 1:
sc = actxserver('LabVIEW.Application');
glob = invoke(sc,'GetVIReference','C:\Program VIs\ControlSC.vi');
SetControlValue(glob,'Command','open')
glob.Run(0);
After running the above code I get the an error
"Source: LabVIEW
Description: LabVIEW: Cannot load front panel."
Method 2:
sc = actxserver('LabVIEW.Application');
glob = invoke(sc,'GetVIReference','C:\Program VIs\ControlSC.vi');
paramNames={'Command'}
paramValues = {'open'}
glob.Call(paramNames, paramValues)
After running the above code I get the an error
"No method 'Call' with matching signature found for class"
Does anyone have any idea how to fix these errors?
Thanks,
Ritesh

The owner is not ("LabVIEW.Application"), That is the development enviornment's Active X server.
The server name you want is this one:
Jeff

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If anyone can point me in the right direction, or give me an
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TIA.
Leslie

In article ,
Leslie Brooks wrote:
>"Bruce Hartweg" wrote in message
>news:...
>> "Chin Huang" wrote in message
>news:[email protected]...
>> >
>> > I don't use LabView, but from the Visual Basic example I saw, it seems
>> > the Call method takes two arguments. The first is an array of parameter
>> > names and the second is an array of parameter values. Try to send in
>> > data with the Tcl command
>> >
>> > $vi Call [list A] [list 1]
>>
>> I'm unable to help the original question (don't know LAbView or VB stuff) but
>> just want to point out that [list A] is equal to A and [list 1] is the
>same as 1.
>>
>> Bruce
>
> I know what is supposed to be passed to the 'Call' method. Doing
>this:
>
>set inst [::tcom::info interface $vi]
>$inst methods
>
> produces (among other things):
>
>{1015 VOID Call {{{in out} {VARIANT *} paramNames} {{in out} {VARIANT
>*} paramVals}}}
>
> So the 'Call' method is expecting two parameters, both pointers
>to variants. TCOM appears to be passing the correct parameter type
>because the TCOM documentation says that a TCL List maps to a
>one-dimensional array of VT_VARIANT. However, the results are
>INvariant (bad pun intended):
>
>% $vi -namedarg Call Amplitude 10
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>% $vi -namedarg Call [list Amplitude] [list 10]
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>% $vi -namedarg Call [list Amplitude] [list [::tcom::na]]
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>% set i 5
>5
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>% $vi -namedarg Call [list Amplitude] [list [incr i]]
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>% $vi -namedarg Call Amplitude [incr i]
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>
> Who can help me with this? Who is the LabView Guru?
Try invoking the Call method without the -namedarg option. The
-namedarg option doesn't work the way you seem to think it works. The
-namedarg option provides a way to specify arguments named from the
method's parameter specification. For example, you discovered that the
Call method take two parameters named "paramNames" and "paramVals".
Tcom returns the error "unknown parameter Amplitude" because "Amplitude"
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Message Edited by Roger Isaksson on 09-09-2005 10:22 AM
Message Edited by Roger Isaksson on 09-09-2005 10:22 AM
Attachments:
VBError.JPG ‏181 KB
Test1.vi ‏9 KB

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Hello CaptainMorgan08, thanx for the instant reply.
I tried, but no, i cant.
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So i cannot compile it with my application!
If you know of a way, please let me know!
I know i might be missing something.. something that is obvious to you.. but i ve been working days=nights hardly no sleep..so you can excuse me if i say something foolish..
Message was edited by:
Stacey_Gr

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</mx:Script>
<mx:LinkButton id="up" click="Upload()" x="295" y="215" label="UpLoad"/>
In this code i forward using s url to Open tat Desktop application but a blank screen appears with out the proper output...
Please Help me in this to forward AIR from Flex Screen..
Thanks in Advance
With Regards
Gopinath.A
Software Developer
First Internet Systems Pvt. Ltd.,
Chennai

try this
http://www.leonardofranca.com/index.php/2009/09/17/launching-an-installed-air-application- from-the-browser/
regards
Leonardo França
Adobe Certified Expert Flex 3 with AIR
Adobe Certified Expert Rich Internet Application Specialist v1.0
Adobe Certified Expert Flash CS3 Professional
Certified Professional Adobe Flex 2 Developer
Adobe Certified Professional Flash MX 2004 Developer
http://www.leonardofranca.com
http://twitter/leofederal
Manager AUGDF - Adobe User Group do Distrito Federal
http://www.augdf.com.br
http://twitter/augdf

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