Hi Jacek, Thank you for your answer. I read that already, and I thought I was not concerned : G__isinterpretedp2f() int G__isinterpretedp2f(void *p2f) (...) "It is unneccessary to use G__isinterpretedp2f() API in interpreter environment because cint will automatically distinguish between the pointer and handle it properly" Anyway I tried to use this function : root [2] G__isinterpretedp2f(&pass) (const int)2 so my pointer is a "Pointer to an interface method of user embedded precompiled global function". in the code on the same page, I saw what I have to do in this case (btw cint knows it is a pointer of type 2, and can do that automatically, as said in the precited sentence) case G__COMPILEDINTERFACEMETHOD: // using interface method G__CallFunc func; func.SetFunc((G__InterfaceMethod)p2f); func.SetArg((long)a); func.SetArg((double)b); result=func.ExecInt((void*)NULL); break; so : root [3] G__CallFunc func Error: Symbol G__CallFuncfunc is not defined in current scope FILE:/tmp/fileUIIYRg_cint LINE:1 *** Interpreter error recovered *** I tried to include Api.h, but : root [5] #include "Api.h" Note: posix.dll is not found. Do 'sh setup' in $CINTSYSDIR/lib/posix directory if you use UNIX. so I did that : [bernet@daplxa127 posix]$ cd $ROOTSYS/cint/lib/posix/ [bernet@daplxa127 posix]$ sh setup ################################################################ # makecint : interpreter-compiler for cint (UNIX version) # # Copyright(c) 1995~2002 Masaharu Goto (MXJ02154@niftyserve.or.jp) # (cint mailing list 'cint@root.cern.ch') ################################################################ Makefile is created. Makecint success. Do 'make -f Makefile' to compile the object gcc -o exten.o -c exten.c make: *** No rule to make target `/home/manip/mnt/compass/root_3.03.09/cint/cint', needed by `G__c_posix.c'. Stop. rm: cannot remove `G__*': No such file or directory then no makefile created... there are still a lot of traps, and I couldn't manage to pass this pointer to compiled function to a compiled function in interpreted mode... thank you for any help, Colin On Thu, 12 Dec 2002, Jacek M. Holeczek wrote: > Hi, > I'm affraid you will need to become familiar with : > int G__isinterpretedp2f(void *p2f) > For details see : > http://root.cern.ch/root/Cint.phtml?ref > Some "real life" examples you can also find in : > ftp://root.cern.ch/root/TF77.tar.gz > Best regards, > Jacek. > >
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