处理多字节数据转Unicode和 string转char

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1.处理多字节数据转Unicode

声明：
LPCCH CString2WChar(LPCCH str);

实现：
//处理多字节数据转Unicode：
LPCCH CString2WChar(LPCCH str1)
{

    DWORD num = MultiByteToWideChar(CP_ACP, 0, str1, -1, NULL, 0);    WCHAR* ww = (WCHAR*)calloc(num, sizeof(WCHAR));    if (ww == NULL)              //判断申请到空间没有    {        free(ww);    }    memset(ww, 0, num*sizeof(WCHAR));       //初始化动作    MultiByteToWideChar(CP_ACP, 0, str1, -1, ww, num);    free(ww);    return str1;}

调用：
//处理多字节数据转Unicode：
LPCCH strHeight1 = W2A(strHeight);
CString2WChar(strHeight1);
LPCCH strWight1 = W2A(strWight);
CString2WChar(strWight1);

2.string转char
string GBKToUTF8(const string& strGBK)
{
string strOutUTF8 = “”;
WCHAR* str1;
int n = MultiByteToWideChar(CP_ACP, 0,
strGBK.c_str(), -1,NULL,0);
str1 = new WCHAR[n];
MultiByteToWideChar(CP_ACP,0,strGBK.c_str(),-1,str1,n);
n = WideCharToMultiByte(CP_UTF8,0,str1,-1,NULL,0,NULL,NULL);
char *str2 = new char[n];
WideCharToMultiByte(CP_UTF8,0,str1,-1,str2,n,NULL,NULL);
strOutUTF8 = str2;
delete[]str1;
str1 = NULL;
delete[]str2;
str2 = NULL;
return strOutUTF8;
}

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