PRB: ATL EXE Server Built On Windows 95 Errors While Registering

CAUSE

_WIN32_WINNT is defined in the Stdafx.h file and the problem is caused by the following code in the generated project source file:

   #if _WIN32_WINNT >= 0x0400
      if (CoSuspendClassObjects() == S_OK)
         PostThreadMessage(dwThreadID, WM_QUIT, 0, 0);
   #else
      PostThreadMessage(dwThreadID, WM_QUIT, 0, 0);
   #endif
				

It is caused by the definition of _WIN32_WINNT in Stdafx.h. In ATL 1.1 for Visual C++ 4.2, this was not defined automatically, so users had to define it themselves if they were using Windows NT 4.0 or Windows 95 with DCOM. The majority of people will be targeting Windows NT 4.0 or Windows 95 with DCOM, so it is automatically defined.