> When I use this in an ordinary c++ source it is working. What is the problem > with this code ?.. In which other did you try you code and how did it fail? My best guess at this point is that you tried it in CINT. In that case you may be missing the dictionary for DATEevent so that CINT does not know about it. To generate the dictionary it might be as simple as doing (assuming that DATEevent is defined in an header file named DATEevent.h): .L DATEevent.h+ Cheers, Philippe -----Original Message----- From: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of ozgur cobanoglu Sent: Monday, March 24, 2003 10:22 AM To: roottalk@pcroot.cern.ch Subject: [ROOT] how to assign a void pointer to a structured pointer in ROOT(3.03/09) Hello, how can I assign a void pointer to a structured pointer in a ROOT session? When I do below and try to get the variables declared in the structure, it gives me crazy numbers; I am using an external library (libmonitor.so, libshift.so) to load the file and first I must load (the library, very first) the file and get its start point by a void pointer -this is the only way in my case- after that I must assign it to a variable that has embedded structure like that : ... // headers are included, *.so files are loaded struct DATEevent { // embedded structure struct eventHeaderStruct header; // ordinary structs struct equipmentStructMy payload; }; void* ptr; struct DATEevent* event; // here, make the pointer 'ptr' point the start of file in memory event = (struct DATEevent*)ptr; printf("%08x \n",event->payload.whatever.whatever.array[5]); // which is a specific number like da1e5afe ... When I use this in an ordinary c++ source it is working. What is the problem with this code ?.. Thank you. (pentium 3, linux7.2, ROOT 3.03/09) -- ---------------------------------------------------------------- Ozgur Cobanoglu E-posta: ozgur@nucleus.istanbul.edu.tr Istanbul Universitesi Tel: 0090-212-511-84-80 Nukleer Fizik Bolumu Fax: 0090-212-519-08-34 Vezneciler Istanbul Mobil: 0090-505-512-72-90 34459 Turkiye ---------------------------------------------------------------- Ozgur Cobanoglu E-mail: Ozgur.Cobanoglu@cern.ch CERN EP/AID Tel: +41 (22) 767 2382 CH-1211 Geneva 23 Fax: +41 (22) 767 9585 Switzerland Building: 53-R-024 ---------------------------------------------------------------- _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 ################################################################# ################################################################# ################################################################# ##### ##### ##### ################################################################# ################################################################# #################################################################
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