Thread: LPCSTR and LPCWSTR

Hello everyone,


I think when UNICODE or _UNICODE is defined, when using _T, it could convert characters to wide character.

And I also think LPCSTR should be defined to pointer to wide character when UNICODE or _UNICODE is defined, and LPCSTR should be defined to pointer to multibyte character when UNICODE and _UNICODE are not defined.

But it seems I am wrong for all points. Could anyone explain to me why I get such warnings in Visual Studio 2003?

Code:

#include <windows.h>
#include <TCHAR.h>

#define UNICODE
#define _UNICODE

int main (int argc, char** argv)
{
        WCHAR* p = _T("hello");
        LPCSTR p1 = p;
        LPCWSTR p2 = p;
}

warning messages,

warning C4133: 'initializing' : incompatible types - from 'char [6]' to 'WCHAR *'
warning C4133: 'initializing' : incompatible types - from 'WCHAR *' to 'LPCSTR'


thanks in advance,
George

Just read the acronyms:
LPCSTR = Long Pointer to a Const String.
LPCWSTR = Long Pointer to a Const Wide String.