control or indicator?

[KSU Flyer]

I have a subvi that the user uses to edit some settings used by the main vi. ie, click a settings button, and the subvi pops up.

Anyway, the subvi reads a text file to load the previously saved settings.  Question is, should the elements of the text file be put into a control or indicator?  The user needs to be able to edit the values on the subvi panel, and then save them again.  Seems I can do this with both controls or indicators.

-Mike

[smercurio_fc · Accepted solution]

---

KSU Flyer wrote:

Seems I can do this with both controls or indicators.

---

Not quite. Indicators cannot be changed by a user when the VI is running. So, in your case you'd want to use controls. When you read the file for the saved values you can simply update the values of the controls using local variables or property nodes. Be careful about race conditions with local variables.

[KSU Flyer]

Thanks!  I get nervous about using property nodes to change values...seems like I read that wasn't a good thing.

[tbob]

Its not that it isn't good.  It is slow compared to other methods.  But even with property nodes, you have a chance for a race condition.