Gray-out sketch curves created during preview event?

[J_Gow]

I'm working on a C++ add-in that requires the user to select SketchCurves and then generates new SketchCurves based on the selections.  I'm wondering if there is a method that will gray-out the generated curves and simultaneously make them unselectable during the preview event? 

I've already figured out how to make the generated curves unselectable through the selection event, but was curious if perhaps there is an all-in-one method that grays out and makes unselectable.  Basically I'm trying to mimic the same dynamic in the Mirror command.

Thank you all for your help,

 Josh

[ekinsb]

I don't see of a way to accomplish this today.  We're working on exposing some low-level graphics functionality through the API that would provide this capability but it won't be available until later this year.

[J_Gow]

Thank you for the response.  Good thing I asked, I'd probably still be digging around the reference manual searching for it.