How to use ProDtlsyminstdataDefattachSet?

[DavidW]

I create many symbol instances from the same symbol definition in a drawing. All the AttachtypeI used is PROSYMDEFATTACHTYPE_LEFT_LEADER.


I want the leaders of different symbol instancesare located at different parts of the symbol definition.


I useProDtlsyminstdataDefattachSet()and ProDtlsymdefattachAlloc() for this purpose. However, It doesn't work.


Any idea?


Thanks a lot.