Elias, > So, I am looking for a way to grab the value of fNpfix, as long > as I have the Class name (TMinuit for example), an instance and > the name of the member (fNpfix in the example case). Yes, this can be done. PyROOT uses it to grant access to public data members. Please have a look at: root/pyroot/src/PropertyHolder.cxx. You can use the TDataMember info that you get from your TClass to calculate the offset from the instance pointer. HTH, Wim -- Wim.Lavrijsen@cern.ch -- WLavrijsen@lbl.gov -- www.lavrijsen.net "Stop making excuses for your software." --first step towards quality
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