How to Refresh a combo list in a Custom Primitive PPG

[Guillaume Laforge]

Hi,

I've got a custom primitive with a "drop down list enumerator" defined in
its DefineLayout callback.
I need to rebuild the "UI Items array" before inspecting the custom
primitive as it is dynamic.
The only working way for now is by right clicking the PPG name and pick
"Refresh".

I added a button using this logic (in the PPGEvent) but it does nothing:

      if ( buttonPressed.GetAsText() == "Refresh" )
      {
        in_ctxt.PutAttribute("Refresh", true);
      }

Is there a way to get the same behavior than the "Right click and Refresh"
using the C++ SDK ?

Thanks,

Guillaume Laforge