Pass .NET reference between callbacks

[Bublina]

Hello,

I have several callback VIs assigned to certain events.

One of these events returns a refnum to an object I need to work with in other callbacks later.

I have read I cannot use functional global, becouse the reference gets garbaged, but how can I do this ?

I tried to pas it through queue with no luck too.

The callback procdure is like this:

1. OnMouseEnter - here I get the hoovered object reference

2. OnMouseMove - here I want to work with the reference from 1.

3. OnMouseLeave - here I can free the reference

[Bublina]

Ok so,

the only ugly solution I found:

Is there any better way to recreate the object or to tell labview not to destroy it ?

[Jarrod_S. · Accepted solution]

You can create a System.Stack, push the object on and then pop it back off to get a new reference to the same object. That will work more universally than the approach you showed, which will only work for a handful of types that can be converted to a variant.

[Bublina]

mscorlib->System.Collections Stack

methods push, peek, pop