Newbie question regarding data type casts.

[Guest]

Folks,

I've inherited some C++ code that I'm trying to convert from VC++ 6.0 to
VC++ 2005 and was wondering if anyone could help as I haven't done any C++
programming in several years.

The code is basically trying to populate a struct that is defined in the
sspi.h file. The compile error that I'm getting is "error C2440:
'initializing' cannot convert from wchar_t* to unsigned short*".

Here is the code to populate the struct:

const wchar_t* pszAuthority
const wchar_t* pszPrincipal
const wchar_t* pszPassword

SEC_WINNT_AUTH_IDENTITY_EX authIdent = {
SEC_WINNT_AUTH_IDENTITY_VERSION,
sizeof authIdent,
const_cast<wchar_t*>(pszPrincipal), //*****Compilie error here******
lstrlenW(pszPrincipal),
const_cast<wchar_t*>(pszAuthority), //*****Compilie error here******
lstrlenW(pszAuthority),
const_cast<wchar_t*>(pszPassword), //*****Compilie error here*****
lstrlenW(pszPassword),
SEC_WINNT_AUTH_IDENTITY_UNICODE,
0,
0};

The struct is defined as follows in the sspi.h header file

#define SEC_WINNT_AUTH_IDENTITY_EX SEC_WINNT_AUTH_IDENTITY_EXW

typedef struct _SEC_WINNT_AUTH_IDENTITY_EXW {
unsigned long Version;
unsigned long Length;
unsigned short SEC_FAR *User;
unsigned long UserLength;
unsigned short SEC_FAR *Domain;
unsigned long DomainLength;
unsigned short SEC_FAR *Password;
unsigned long PasswordLength;
unsigned long Flags;
unsigned short SEC_FAR * PackageList;
unsigned long PackageListLength;
} SEC_WINNT_AUTH_IDENTITY_EXW, *PSEC_WINNT_AUTH_IDENTITY_EXW;

I guess the question is what is the best way to "cast" a wchar_t* to a
unsigned short* so that it will compile and run correctly? Any help or
feedback would be greatly appreciated.

 

[Jochen Kalmbach [MVP]]

Hi Anthony!

Already answerd in "microsoft.public.vc.language"... (either switch to
/Zc:wchart_t- or do a reinterpret_cast)

--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/