using WideCharToMultiByte function have error

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int _tmain(int argc, _TCHAR* argv[])
{
int mMinSize;
string mstrReturn;
char *mcharReturn;
const WCHAR *mchar;

///*******************************OK*************************************
wstring mstr01 = _T("钓鱼岛是中国的");
mchar = mstr01.c_str();
mMinSize = WideCharToMultiByte(CP_ACP, NULL, mchar, -1, NULL, 0, NULL, FALSE);
mcharReturn = new char[mMinSize];
WideCharToMultiByte(CP_ACP, NULL, mchar, -1, mcharReturn, mMinSize, NULL, FALSE);
//mcharReturn = "钓鱼岛是中国的"

///*******************************OK*************************************
wstring mstr02 = _T("釣魚台は中国の");
mchar = mstr02.c_str();
mMinSize = WideCharToMultiByte(CP_ACP, NULL, mchar, -1, NULL, 0, NULL, FALSE);
mcharReturn = new char[mMinSize];
WideCharToMultiByte(CP_ACP, NULL, mchar, -1, mcharReturn, mMinSize, NULL, FALSE);
//mcharReturn = "釣魚台は中国の"

///*******************************NG*************************************
wstring mstr03 = _T("한국어");
mchar = mstr03.c_str();
mMinSize = WideCharToMultiByte(CP_ACP, NULL, mchar, -1, NULL, 0, NULL, FALSE);
mcharReturn = new char[mMinSize];
WideCharToMultiByte(CP_ACP, NULL, mchar, -1, mcharReturn, mMinSize, NULL, FALSE);
//mcharReturn = "???"

///*******************************NG*************************************
wstring mstr04 = _T("دياو هو الصين");
mchar = mstr04.c_str();
mMinSize = WideCharToMultiByte(CP_ACP, NULL, mchar, -1, NULL, 0, NULL, FALSE);
mcharReturn = new char[mMinSize];
WideCharToMultiByte(CP_ACP, NULL, mchar, -1, mcharReturn, mMinSize, NULL, FALSE);
//mcharReturn = "???? ?? ?????"

///*******************************OK*************************************
wstring mstr05 = _T("Diaoyutai Китая");
mchar = mstr05.c_str();
mMinSize = WideCharToMultiByte(CP_ACP, NULL, mchar, -1, NULL, 0, NULL, FALSE);
mcharReturn = new char[mMinSize];
WideCharToMultiByte(CP_ACP, NULL, mchar, -1, mcharReturn, mMinSize, NULL, FALSE);
//mcharReturn = "Diaoyutai Китая"

return 0;
}

Posted 15-Apr-15 2:50am

Reason Jiang

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Comments

chandanadhikari 15-Apr-15 9:06am

can you please try using "CP_UTF8" in place of "CP_ACP" where ever it does not work. making a guess here but it might work !!

Reason Jiang 15-Apr-15 9:47am

no,not solve the problem!

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Jochen Arndt · Answer 1 · 2015-04-15T03:06:00

Solution 1

Multi byte (ANSI) strings can represent only a specific set of characters according to the selected code page. When trying to convert a wide string, the characters that aren't covered by the code page are replaced with a replacement character which is '?' for most code pages.

Posted 15-Apr-15 3:06am

Jochen Arndt