Control LabVIEW exe via ActiveX

[Zou]

I can get VI refnum and set/get control values, but I can't find any method to trigger a button click event or any value change even.

Anyone did this before?

 

[Rolf Kalbermatter]

As far as I know, the ActiveX server interface in LabVIEW dates back to LabVIEW 6.0 or something and that is in fact before such features were available through VI server. It seems there was very little changed on the ActiceX server interface since, while the entire VI server itself received a huge workout with many new features including the whole scripting API.

The most simple solution might be to create a VI library that provides the necessary functionality through use of VI server and build a DLL from it.

[Zou]

Thanks for the quick response.

The exe uses a 3rd party HW and SDK.

The SDK, once called, left something in the memory.  I can't get rid of it.  And I can't run it the 2nd times until restart LabVIEW.  So I've to put it in a separate process.

 

[Norm Kirchner]

You might want to investigate REx - Remote Export Framework for LV built EXE

https://lavag.org/topic/17024-rex-remote-export-framework-and-remote-events/

Although it can't give you a direct button click, it does the next best (possibly better) thing, giving you the ability to call a method externally that fires a LV event internal to the EXE.

Good luck,

~,~ The Captain

[SebastienM]

Hi,

You can see this as a very simple solution:

http://www.notatamelion.com/2015/05/25/using-vi-server-to-interact-with-executables/