VC判断系统是64位还是32位

BOOL IsWow64()

{

    typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);

    LPFN_ISWOW64PROCESS fnIsWow64Process;

    BOOL bIsWow64 = FALSE;

    fnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress( GetModuleHandle(TEXT("kernel32")),"IsWow64Process");

    if (NULL != fnIsWow64Process)

    {

       fnIsWow64Process(GetCurrentProcess(),&bIsWow64);

    }

    return bIsWow64;

}