error C3861: '_L': identifier not found in VS2008 only. (works ok in VC6)

[hobnob]

I'm converting a working unicode app dll from vc6 to vs2008, but I'm getting a compile error: '_L': identifier not found

example line of code:-

if(*strPrinter==_L(""))


The program already includes: #include <AtlConv.h>

I have tried adding #include <wchar.h> and <tchar.h> to no avail.

NOTE: this is working on VS6, so maybe it's a problem with project settings somewhere??? any ideas?

Thanks,
Hobnob

[John E]

Are you getting mixed up with _T() ?? Assuming that *strPrinter can either be Unicode or non-Unicode (depending on the compilation) I think the syntax should be:-

if (*strPrinter == _T(""))

[hobnob]

ok, worked it out... maybe my example wasn't clear enough, anyway:-

CStringW strLicenseKey = _L("TEXT HERE");

should be:- (to work on 2008)

CStringW strLicenseKey = L"INSERT_LICENSE_KEY_HERE";

[Paul McKenzie]

should be:- (to work on 2008)

CStringW strLicenseKey = L"INSERT_LICENSE_KEY_HERE";

The correct way is to use

CStringW strLicenseKey = L"INSERT_LICENSE_KEY_HERE";

regardless of the compiler. So it isn't just to get it to work on 2008 -- you need to do this for any ANSI C++ compiler, let alone Visual C++.

I have never heard of the "_L" macro, but if it is a macro, take a look at the definition of what "_L()" is.

Regards,

Paul McKenzie

[hobnob]

ok, worked it out... maybe my example wasn't clear enough, anyway:-

CStringW strLicenseKey = _L("TEXT HERE");

should be:- (to work on 2008)

CStringW strLicenseKey = L"TEXT HERE";

[Igor Vartanov]

ok, worked it out... maybe my example wasn't clear enough, anyway:-

CStringW strLicenseKey = _L("TEXT HERE");

should be:- (to work on 2008)

CStringW strLicenseKey = L"TEXT HERE";

First, VC6 knows nothing about CStringW, as this type was introduced in VC7.

Second, a simple experiment:

#include <afxwin.h>

void foo ()
{
	CString str = _L("Bla-bla");
}

E:\Temp\70>cl 70.cpp /D"_AFXDLL" /D"UNICODE" /D"_UNICODE" /MD /c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8168 for 80x86
Copyright (C) Microsoft Corp 1984-1998. All rights reserved.

70.cpp
70.cpp(5) : error C2065: '_L' : undeclared identifier