reference of a control from the reference of a vi

[Steve_Block]

Hopefully there is a simple answer to this. I have a vi that returns it's reference and would like to know if there is a way to use the reference of the vi to obtain the reference of all the controls in the vi.

[Ben]

Yes use a property node to get ref to the FP (fron panel) then use that ref for another prop node to get an array of refs to all controls on the FP. Each control has a name property that use can use to decide which is which.

Use "to more specific" if you need to get at the object specific properties.

Ben

PS This only counts as a race condition if your answer over-writes mine.

Message Edited by Ben on 10-29-2009 02:27 PM

[RavensFan]

Your question sounds just like this one.

How can i get the reference to Controls from VI-reference

[Darin.K]

Create a property node for the VI reference and select 'Front Panel', right-click and create a property node for the Panel Class and select 'Controls[]'

Edit:  I believe this counts as a race condition.

Message Edited by Darin.K on 10-29-2009 02:25 PM

[Steve_Block]

"Create a property node for the VI reference and select 'Front Panel', right-click and create a property node for the Panel Class and select 'Controls[]' "

What is the best way to access the specific control that I want by name?

[Ben]

---

Steve Block wrote:

"Create a property node for the VI reference and select 'Front Panel', right-click and create a property node for the Panel Class and select 'Controls[]' "

What is the best way to access the specific control that I want by name?

---

THis Nugget has a lot of hints for working with control refs.

here is a preview

Use the label to choose which ref you need.

Ben

[Darin.K]

As Ben noted, you can pull the name from the ctrl reference.  With the array of names, you can search for the one you are interested in to find its index in the Controls[] array.

Edit:  I am going to lunch now, Ben has this covered, and then some....

Message Edited by Darin.K on 10-29-2009 02:36 PM

[Steve_Block]

Darin.K s method works, however, I have a tabbed control with controls inside of the tabs. How do I now access the controls inside of the tab? Do I need to typecast the reference?

[Ben]

See my Nugget to learn how to test if a ref is of a specific type but once you find a tab ref use it to feed another controls prop node to get the controls on the tab. Repeat for nested tabs.

Ben

[Steve_Block]

So far so good. I just ran into another roadblock though. I have a reference to an array and want to obtain the references to it's elements from it. What property should I use to accomplish this?