[Selfext-user] Release version linker problem with VS .NET

[David A. <Da...@Sp...>]

Dear List:

I am a VB6 programmer using SelfExt to package install programs. I need to 
make a small customization to SelfExt which I believe I can stumble my way 
through on. However, using VS .NET (I don't have VS6 C++, just VB6), the 
totally unmodified source build gives the following Linker errors which I 
am unable to get past. The LNK2019 message talks about:

For C++ projects from previous releases that were upgraded to the current 
version, if __UNICODE was defined and the entry point was WinMain, you need 
to change the name for the entry point function to either _tWinMain or _tmain

I suspect my solution lies in this area, but I am unable to determine the 
needed modifications. Can anyone help?

Linker error messages:

ExtCab.obj : error LNK2019: unresolved external symbol ___security_cookie 
referenced in function "int __cdecl chiclero::Extract(char const *,int,char 
const *,char *,struct HWND__ *,unsigned int)" 
(?Extract@chiclero@@YAHPBDH0PADPAUHWND__@@I@Z)
SelfExt.obj : error LNK2019: unresolved external symbol ___security_cookie 
referenced in function _WinMain@16
Worker.obj : error LNK2001: unresolved external symbol ___security_cookie
ExtCab.obj : error LNK2019: unresolved external symbol 
@__security_check_cookie@4 referenced in function "int __cdecl 
chiclero::Extract(char const *,int,char const *,char *,struct HWND__ 
*,unsigned int)" (?Extract@chiclero@@YAHPBDH0PADPAUHWND__@@I@Z)
SelfExt.obj : error LNK2019: unresolved external symbol 
@__security_check_cookie@4 referenced in function _WinMain@16
Worker.obj : error LNK2001: unresolved external symbol 
@__security_check_cookie@4
.\Release/SelfExt.exe : fatal error LNK1120: 2 unresolved externals

 From selfext.cpp area of probable problem:

//////////////////////////////////////////////////////////////////////
// Replacement startup code, so that it is not necessary to link with
// the run-time library

extern "C" void __cdecl WinMainCRTStartup(void) {
     ExitProcess(WinMain(GetModuleHandle(NULL), NULL, "", SW_SHOWDEFAULT));
}

#ifdef _MSC_VER // MS linker complains without this
extern "C" void __cdecl main(void) { }
#endif

namespace std {
     extern "C" void * __cdecl memset(void *s, int c, size_t n) {
         for (size_t i = 0; i < n; i++)
             ((char*)s)[i] = c;
         return s;
     }
}

//////////////////////////////////////////////////////////////////////
// WinMain

int WINAPI WinMain( HINSTANCE hInstance,
                     HINSTANCE /*hPrevInstance*/,
                     LPSTR     /*lpCmdLine*/,
                     int       /*nCmdShow*/ )
{

Much thanks for any insights, David Austin