How to really knows a lib / cell is not exists anymore ?

Charley,

Do you mean that you've deleted the cds.lib entry after it has been opened in Virtuoso?

ddGetObj(libName cellName) would return nil if it's not available on disk. 

However, if you tried doing a view refresh in Virtuoso having deleted a library entry, it may complain if the cellViews are still in memory - and say that it hasn't actually deleted the library entry in memory.

Not really sure what you're trying to achieve here.

Kind Regards,

Andrew.

 Andrew ,

ddGetObj(libName cellName)  will work correct when user restart layoutPlus again ,

if cellview is not exist , it won't return value.

But , now is as below:

 A user has LibA/A cell , B user has LibB/B cell and LibC/C cell 

When A user open cell which references LibB/B and LibC/C , it's OK , 

But B user reomve LibB/LibC from its cds.lib

The problem is that all data are still in memory ,  ddGetObj(libName cellName) will return value ,

Thank you,

Charley

If the library is no longer referenced on disk, and you've done a refresh, then member("libName" ddGetLibList()~>name) will return nil, even though ddGetObj("libName" "cellName" "viewName") may still return the object.

Regards,

Andrew.

 Andrew , 

It works.

Thank you very much.

Charley