layer isolation of xref layer

[yangcheng2008]

Could some please tell me how you layer isolate a layer in an xref?

Thanks

[sinc]

The only way I know to do that is to do it manually in the Layer manager by turning off all the layers you don't want.

Other than that, I think you need to go into third-party land. For example, this command has that capability (with its "NESTED" option):

http://www.quuxsoft.com/SincpacC3D_Help/SP_LayerIsolate.htm

Someone might also have a Lisp program floating around that will do it.

[jpaulsen]

Has anyone figures out how to drill down to nested objects inside of C3D objects yet? Or are we still waiting for Autodesk to open up that part of the API?

[sinc]

It can be done to a limited degree, with some objects. Each year gets a bit better, but there are still problems. And some parts are possible, but difficult; for example, I had to do some pretty tricky things to get the Sincpac-C3D layer commands to work on Point Markers separately from Point Labels.

Working on objects in XREFs can also rather difficult with the current API - many things can only be done if the XREF is actually opened in C3D. This can be done via code, but it incurs performance hits, as well as leading to more-complicated code.

[yangcheng2008]

thank you very much !!!