char * to LPCWSTR (brak polskich znaków)

char * ptr = static_cast < char *>( GetClipboardData( CF_OEMTEXT ) );
char * buf = static_cast < char *>( LocalAlloc( LPTR, lstrlen( ptr ) + 1 ) );

WCHAR * tmp = new WCHAR[ lstrlen( ptr ) + 1 ];
MultiByteToWideChar( 0, 0, buf, lstrlen( ptr ) + 1, tmp, lstrlen( ptr ) + 1 );