Is it possible to script event selection for Register Event Callback node ?

[Mathieu_R.]

Hello,

I'm trying to find a way to programmatically wrap some ActiveX event registration... using VI scripting.

I'm stuck with a generic GrowableFunction (Generic » GObject » Node » GrowableFunction » GrowableFunction). When just getting AllObjs[] from Diagram, this is the type of reference I get for an already existing Register Evetn Callback node on the diagram. I didn't find a way to use this (I guess) too generic level to select a event to register.

snippet.png

The REG_EVT_CLLBCK.vi diagram looks like this:
snippet_REG_EVT_CLLBCK.png

 
I've seen that under GrowableFunction, you can find ObjectFunction and then Contructor, Property, Invoke.
Using theses Property and Invoke class, I'm able to select a property or a method of a already existing node using sripting (you need to allow alternate names).

snippet_PropertyNode.png

 
But I do not manage to get an enought specific class in VI server for the Register Event Callback node.

Is there a trick to select the event to register using VI scripting ?
Or did I reach a kind of dead end ?

Thanks in advance for your help.

[paul_a_cardinale]

"GrowableFunction" objects have a "Style" property.  In this case, the style is "Register Event Callback".

My guess is that other particulars are stored in tags of the object; but I couldn't find them.

[paul_a_cardinale]

My other guess is that it's an unexposed property.

An example of that is the bezel color on classic controls.

paul_a_cardinale_0-1748102871827.png

You can change the color with the "Set Color" tool, but it's not accessible programmatically; not even with this:

paul_a_cardinale_1-1748103053308.png (I know, I tried all 4,294,967,295 index values.)

[Mathieu_R.]

Thanks for your answers. I'll "brute force" properties by index... With some luck, I'll find something interesting to get this programmatic event selection done.

[paul_a_cardinale]

---

@Mathieu_R. wrote:

Thanks for your answers. I'll "brute force" properties by index... With some luck, I'll find something interesting to get this programmatic event selection done.

---

Here is what I have on that.

[Mathieu_R.]

Wow, this is... awsome !! Thank you very much for sharing this.

My 'brute force' investigation did not allow me to identify any other property using this Get/Set Property methods.

And I didn't manage to configure the event to register.

[raphschru]

Hi Mathieu,

I couldn't find a way to set the event either.

Maybe you could post an idea in the Idea Exchange?

I guess this would require to add a new subclass of "GrowableFunction" that would be named "RegisterEventCallback", very similar to class "RegisterForEvents".

Its properties could be:

 - "Event Types": IDs of selected events.

 - "Supported Event Types": names and IDs of all selectable event types for the wired class.

 - "Name Format": no names / short names / long names.

Regards,

Raphaël.