Hi Primrose, you should avoid writing unnamed objects into shared memory. Unnamed objects are stored by their classname so you could try something like: arr = (TObjArray *) mfile->Get("TObjArray", arr); to get the array. But this will not work if you have more than one TObjArray stored in shared memory Cheers, Fons. Primrose Mbanefo wrote: > > Hello everyone, > 1.How can I read an object I created and placed in shared memory. This > object is not named. > 2.in order to write the above object to shared memory, it's implementaion > contains the line Add(this). This works but is this the right way to do what > I want to do? > Thanks, > Primrose -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
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