Hi, I am trying to inherit from the TPolyLine3D class to create an emulsion track for the DONUT experiment (Fermilab E872). I get a message from the lib command on my Windows NT machine that says libE872Graphics.def : warning LNK4102: export of deleting destructor "[thunk]:pu blic: virtual void * __thiscall TGraphicsEmTrack::`vector deleting destructor'`a djustor{12}' (unsigned int)"; image may not run correctly I tried to find the source of the problem and found out that I get the same message when I try to make a very simple inheritance: Here is my TGraphicsEmTrack.h file: #include "TObject.h" #include "TAttLine.h" class TGraphicsEmTrack : public TObject,public TAttLine { private: public: TGraphicsEmTrack() {} // default constructor virtual ~TGraphicsEmTrack() {} // default destructor ClassDef(TGraphicsEmTrack,1) //An emulsion track }; Here is the output when I compile: bash.exe-2.02$ nmake Microsoft (R) Program Maintenance Utility Version 1.62.7022 Copyright (C) Microsoft Corp 1988-1997. All rights reserved. cl /nologo -DWIN32 -D_WIN32 -D_MT -D_DLL -MD /O2 /G5 /MD -DWIN32 -DVISUAL_CPLUSPLUS -D_WINDOWS -Id:\cern\root/include -c TGraphicsEmTrack.cxx TGraphicsEmTrack.cxx "Generating dictionary E872GraphicsDict..." Note: operator new() masked 1c Note: operator delete() masked 1c cl /nologo -DWIN32 -D_WIN32 -D_MT -D_DLL -MD /O2 /G5 /MD -DWIN32 -DVISUAL_CPLUSPLUS -D_WINDOWS -Id:\cern\root/include -c E872GraphicsDict.cxx E872GraphicsDict.cxx BINDEXPLIB libE872Graphics TGraphicsEmTrack.obj E872GraphicsDict.obj > libE872Graphics.def lib /nologo /MACHINE:IX86 TGraphicsEmTrack.obj E872GraphicsDict.obj /def:libE872Graphics.def /out:libE872Graphics.lib libE872Graphics.def : warning LNK4102: export of deleting destructor "[thunk]:public: virtual void * __thiscall TGraphicsEmTrack::`vector deleting destructor'`adjustor{12}' (unsigned int)"; image may not run correctly Creating library libE872Graphics.lib and object libE872Graphics.exp link /NODEFAULTLIB /INCREMENTAL:NO /RELEASE /NOLOGO -entry:_DllMainCRTStartup@12 -dll libE872Graphics.exp d:\cern\root/lib/*.lib msvcrt.lib oldnames.lib kernel32.lib ws2_32.lib mswsock.lib advapi32.lib user32.lib gdi32.lib comdlg32.lib winspool.lib MSVCIRT.LIB TGraphicsEmTrack.obj E872GraphicsDict.obj /out:libE872Graphics.dll bash.exe-2.02$ On a Linux system, the same routines compile without any warnings. Can anybody tell me what is going on? It seems to have something to do with TAttLine.h. Sincerely, Reinhard Schwienhorst
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