Calling a VI through ActiveX in the "background"

[calvintiger]

I would like to execute a Labview VI through ActiveX in Matlab. I use the following commands in Matlab (but they should be similar in other ActiveX-enabled languages such as VB): e=actxserver('LabVIEW.Application'); vipath='C:\DATA\Labview\test.vi'; vi=invoke(e,'GetVIReference',vipath); vi.Run; This works correctly and the VI is seen to execute on its front panel. However, Matlab keeps waiting until the VI has terminated. I want Labview to run the VI silently, without telling Matlab (through ActiveX) to wait. How can a VI be executed without keeping ActiveX busy ? Is there a standard way to do so ? (I assume there should be, given how multitask-oriented Labview is - which is not the case of Matlab in its standard form).

[Akiel]

if i have read your problem correctly you would like to have matlab and your vi running in parallel. To get two vis running in parallel i used a invoke node (run vi) with the wait until done set to false (default is true). 

Hope it helps 

[calvintiger]

Yes, this is exactly what I need ! Do you know how to set 'Wait until done' to False through Matlab by any chance ? I tried something like vi.invoke('Run', 'Wait until done', 0) but this is apparently not the right syntax.. Matlab complains that the 'Run' method only takes one argument..

[calvintiger]

Someone gave me the solution: you have to use vi.Run(1) (for async/background execution) or vi.Run(0) (if you want to wait until done).

[A.Hakim]

hello

when I tried this

e=actxserver('LabVIEW.Application');

I got the following error, although I have Labview 2012 and its activex server is enabled

Error using actxserver (line 91)
Server creation failed. Invalid ProgID 'LabVIEW.Application'