Hello,

I am compiling a sample project I got from a book on ATL COM.  It is a
simple ATL COM object with Dual Interfaces that compiles and links to a
DLL successfully.  If I do nothing else but enable "Enable Exception
Handling" from the project settings window, I get the following linker
error:

Linking...
   Creating library ReleaseUMinDependency/Simple.lib and object
ReleaseUMinDependency/Simple.exp
LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
ReleaseUMinDependency/Simple.dll : fatal error LNK1120: 1 unresolved
externals
Error executing link.exe.

I need to enable exception handling because I intend to use the STL in
modifications I am going to make to the sample project.  Can anyone tell
me why this is happening and how to fix it?

Thanks.

Are you using VC6.0? If so, it'smost likely a known problem with the default ATL
project created. If you use a CRT function that requires the CRT startup code,
you'll get the error, because by default, the project has  _ATL_MIN_CRT defined.
To remove it, go to project -> settings -> C/C++ and remove the _ATL_MIN_CRT
definition from the "Preprocessor Definitions" box.

--
Tomas Restrepo

http://members.xoom.com/trestrep/