Change element type of an array of containers (from LabVIEW)

[vrv]

Hi,

I have an empty Array of Container type and need to insert an element of a custom data type definition. If I already have an element of the type definition, it is simple to copy that element and insert it as a new element. But inserting a new element to a empty array I need to specify that the element should be of this data type.

Getting the type definition with the Method "GetTypeDefinition" and inserting this as a new value simply "moves" my type definition to the inserted element (which is not suppose to happen). Can't find a method to change data type and seems that none of the property options does the trick to.

I just need to do the same as "change type" in the TestStand editor, just inside LabVIEW.

What did I miss??

Thanks

Note: Use edit of the step in the attached sequence file. Collapse and expand "Locals" after running the Edit function to see the result.

[j_dodek]

Hi,

Take a look at these C++ code snipped.

The TS API calls are in LabView the same.

Hope this helps

Juergen

[vrv]

Hi Juergen,

Thanks for the reply. My skill within C++ is not worth talking about, but as far as I can see, you take the prototype of the array, clone it and add it to the array. That’s not what I want to do. I want to have the element type referring to the type definition, so if I for some reason change the type definition, my element changes to.

Another thing, I have an empty array of containers, meaning it does not make sense to get ArrayElementPrototype as the prototype for the array haven’t been defined yet.

Please tell me if I am wrong.

Vagn

[j_dodek]

Hi,

When i am writing my stuff i was not able to open your SequenceFile. Now i was.

My upper example is only working for arrays of Types. It is also working on empty Arrays, too.

Please tell me why you do not use an array of types ?

Regards

Juergen

[vrv]

Hi,

It is a hidden TS property, defined as an "array of container" type, I am updating. I've just made the example to simplify my problem. In TS the data type use itself as nested structure. I thought it was a minor detail to change the type but guess not.

Regards

Vagn