I have two different projects in C++, one compiles to a static library and uses Unicode character encoding as it has to support multiple languages (Spell Checker), the other is a legacy MFC project that uses a MultiByteCharacterSet encoding.
The legacy project has to use the library Project (to Spell check the contents of a richedit control interactively).
when I build a lone project with a richedit control, set the character encoding to unicode and reference the library, it works fine. but where I try to reference the library from the legacy project the same way I have done with the lone project, it doesn't work.
I investigated and realised that the TEXTRANGE structure that is being populated by the EM_GETTEXTRANGE expects a Unicode value in its lpstrtext member, which wouldn't be the case for the legacy project. the implementation in the library is as follows:
TEXTRANGE txtRange;
memset (&txtRange, 0, sizeof(txtRange));
memset (bufW, 0, sizeof (bufW));
//debug_log("Size of TEXTRANGE: x: %d and Size of BufW: %d.", sizeof(txtRange), sizeof(bufW));
txtRange.lpstrText = string_from_unicode_cp(bufW, CP_ACP);
txtRange.chrg.cpMin = 0;
txtRange.chrg.cpMax = _countof(bufW);
debug_log("count of bufw: %s.", bufW);
SendMessage (hwnd, EM_GETTEXTRANGE, 0, (LPARAM)&txtRange);
debug_log("txtRange.lpstrText is: %S",txtRange.lpstrText);
but I get the error:
SpellChecker.cpp(215): error C2440: '=' : cannot convert from 'char *' to 'LPWSTR'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Visual Studio says that the lpstrtext member int he library is LPWSTR (perhaps because of the UNICODE format selected), which is understandable.
My question is, Is there a way to force lpstrtext member to expect LPSTR (cast) even when the project that contains it, is set to use unicode.
TEXTRANGE is a macro:
#ifdef UNICODE
#define TEXTRANGE TEXTRANGEW
#else
#define TEXTRANGE TEXTRANGEA
#endif // UNICODE
So you should be able to use TEXTRANGEA instead to force char* type.