C++ utf8转为gbk_C++ 字符串UTF8与GBK互相转化

UTF-8转为GBK2312代码

引入头文件

#include "windows.h"

代码

// UTF-8转为GBK2312
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std::string UtfToGbk(const char* utf8)
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{
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                int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
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                wchar_t* wstr = new wchar_t[len+1];
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                memset(wstr, 0, len+1);
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                MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wstr, len);
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                len = WideCharToMultiByte(CP_ACP, 0, wstr, -1, NULL, 0, NULL, NULL);
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                char* str = new char[len+1];
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                memset(str, 0, len+1);
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                WideCharToMultiByte(CP_ACP, 0, wstr, -1, str, len, NULL, NULL);
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                if(wstr) delete[] wstr;
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                return str;
​
}

GBK转化为UTF8格式代码

代码

//GBK转化为UTF8格式
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void ConvertGBKToUtf8(CString &strGBK)
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{
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                int len=MultiByteToWideChar(CP_ACP, 0, (LPCTSTR)strGBK, -1, NULL,0);
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                wchar_t * wszUtf8 = new wchar_t [len];
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                memset(wszUtf8, 0, len);
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                MultiByteToWideChar(CP_ACP, 0, (LPCTSTR)strGBK, -1, wszUtf8, len);
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                len = WideCharToMultiByte(CP_UTF8, 0, wszUtf8, -1, NULL, 0, NULL, NULL);
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                char *szUtf8=new char[len + 1];
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                memset(szUtf8, 0, len + 1);
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                WideCharToMultiByte (CP_UTF8, 0, wszUtf8, -1, szUtf8, len, NULL,NULL);
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                strGBK = szUtf8;
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                delete[] szUtf8;
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                delete[] wszUtf8;
​
}