Reference to a Type definition

[jojo1193]

Hello together,

in my main VI i have different clusters. These clusters are defined as a tryp definition.

In my subvi I want to change the colour of an element of a cluster.

Until now i habe a Reference as an Control Element in the SubVI. The Main VI forwards the reference of the cluster to the SubVI. This works fine. But if i change the Typdefinition i get an error of the subVI because of the wrong reference. (The reference dont update automatically). 

Do you have a solution to fix this? Maybee something like to tie the reference to the Type definiton?

Many thanks in advance,

Johannes

[RavensFan]

This is the kind of question that needs some code attached so we can see what you are doing.

Are you working with a regular type definition or a strict type definition?

[jojo1193]

I am not allowed to post the code but i created an example. If you change the TypeDefintion "MainVI-Cluster" the Code dont work anymore. (I create also a Cluster a little bit different so that you can see the problem without changing anything). I hope that you can understand my problem.

[Bob_Schor]

Your sub-VI needs to be able to take two distinct types of input, "Cluster" and "Cluster-Error".  There are a number of ways to write a VI that is sufficiently "malleable" to do this -- you might look into "Malleable VIs", which have the extension ".vim".

Bob Schor

[FireFist-Redhawk · Accepted solution]

1. On your Reference Control of your SubVI, upcast it to the more generic Control class by right clicking it and "Select VI Server Class" > Generic > GObject > Control > Control.

2. Drop a "To More Specific Class" Node and wire it as shown:

Spoiler

Should be straightforward but I can give you the modified code if you need it.

[jojo1193]

Dear Bob_schor,

first thanks for your answer. I tried your solution but it didnt work. After a quick research i found the information, that property nodes arent allowed in Malleable VIs (https://www.mediamongrels.com/introduction-to-malleable-vis-labview/).

But nevertheless thank you i didnt know that such VIs exist. This will help me with other projects 🙂

[jojo1193]

Dear FireFist-Redhawk,

thank you very much your solution works very well 🙂