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C++/MFC UTF8 转 Unicode
char* U8ToUnicode(char* szU8)
{
//UTF8 to Unicode
//预转换,得到所需空间的大小
int wcsLen = ::MultiByteToWideChar(CP_UTF8, NULL, szU8, strlen(szU8), NULL, 0);
//分配空间要给'\0'留个空间,MultiByteToWideChar不会给'\0'空间
wchar_t* wszString = new wchar_t[wcsLen + 1];
//转换
::MultiByteToWideChar(CP_UTF8, NULL, szU8, strlen(szU8), wszString, wcsLen);
//最后加上'\0'
wszString[wcsLen] = '\0';
char *m_char;
int len = WideCharToMultiByte(CP_ACP, 0, wszString, wcslen(wszString), NULL, 0, NULL, NULL);
m_char = new char[len + 1];
WideCharToMultiByte(CP_ACP, 0, wszString, wcslen(wszString), m_char, len, NULL, NULL);
m_char[len] = '\0';
return m_char;
}
Unicode 转 UTF8
char* UnicodeToU8(wchar_t* wszString)
{
// unicode to UTF8
//预转换,得到所需空间的大小,这次用的函数和上面名字相反
int u8Len = ::WideCharToMultiByte(CP_UTF8, NULL, wszString, wcslen(wszString), NULL, 0, NULL, NULL);
//同上,分配空间要给'\0'留个空间
//UTF8虽然是Unicode的压缩形式,但也是多字节字符串,所以可以以char的形式保存
char* szU8 = new char[u8Len + 1];
//转换
//unicode版对应的strlen是wcslen
::WideCharToMultiByte(CP_UTF8, NULL, wszString, wcslen(wszString), szU8, u8Len, NULL, NULL);
//最后加上'\0'
szU8[u8Len] = '\0';
return szU8;
}