Dear Rene Thank you very much for this fast reply. This is really great. Best regards Christian Stratowa Rene Brun wrote: > Hi Christian, > > On Thu, 4 Jan 2001 cstrato@EUnet.at wrote: > > > Dear Rene > > > > Thank you very much for answering my questions. Since you said, you do not > > understand my second question regarding TMatrix without having a working example, > > I have implemented a "TestClass" which I compile as library "TestClass.so" > > and use in macro "MacroTestClass.C. > > Below I have attached all necessary files. > > > > When I write a simple macro (see TestMacro.C below), all works fine, but > > when I put the same code in a member function I cannot compile the library. > > However, when I put TMatrix on the stack and comment out the TString code, > > everything works fine. > > > > I have the following questions: > > > > 1, Why can I not use vMatrix(i,j) when TMatrix is created on the heap? > > I get the following error when compiling TestClass: > > That is the way the operator () is defined. Do: > TMatrix *vM = new TMatrix(vNRows,vNCols); > TMatrix &vMatrix = *vM; > > > > > [christian@cookiebook rootcode]$ gmake -f Makefile4TestClass > > g++ -O -Wall -fPIC -fsigned-char -I/usr/X11/include -I/opt/root/include -c TestClass.cxx > > TestClass.cxx: In method `void TestClass::FTest2(int, int)': > > TestClass.cxx:59: `vMatrix' cannot be used as a function > > TestClass.cxx:62: `vMatrix' cannot be used as a function > > TestClass.cxx:63: `vMatrix' cannot be used as a function > > gmake: *** [TestClass.o] Error 1 > > > > 2, Why can I not append a number to TString? > > I get the following error when compiling TestClass: > > > > This problem was fixed in TString two weeks ago. You can import the > current CVS version. > > Rene Brun > > > [christian@cookiebook rootcode]$ gmake -f > Makefile4TestClass > > g++ -O -Wall -fPIC -fsigned-char -I/usr/X11/include -I/opt/root/include -c TestClass.cxx > > TestClass.cxx: In method `void TestClass::FTest1(const char *)': > > TestClass.cxx:40: ambiguous overload for `TString & += Int_t &' > > /opt/root/include/TString.h:384: candidates are: class TString & TString::operator +=(const > > TString &) > > /opt/root/include/TString.h:387: class TString & TString::operator +=(char) > > > > /opt/root/include/TString.h:390: class TString & TString::operator +=(long > > int) > > /opt/root/include/TString.h:393: class TString & TString::operator +=(long > > unsigned int) > > gmake: *** [TestClass.o] Error 1 > > > > Thank you once again for your help. > > > > Best regards > > Christian Stratowa > > Vienna, Austria > >
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