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 int nLen = 0;
int nMemLen = 0;
CString str(_T("C:\\中文字符测试\\jpg"));
nLen = str.GetLength();
//字符串转换 CString 转为 char*
const UINT wLen = str.GetLength() + 1;
UINT aLen = WideCharToMultiByte(CP_ACP,0,str,wLen,NULL,0,NULL,NULL); //alen为20，包含了最后的 \0
char* pChar = new char[aLen];
WideCharToMultiByte(CP_ACP,0,str,wLen,pChar,aLen,NULL,NULL);
nLen = strlen(pChar); //nLen 为 19 strlen不包含 \0
nMemLen = sizeof(char)*nLen;
//将lpa使用memcpy拷贝到新申请的char中去
char* pCharDest = new char[nLen+1];
memcpy(pCharDest,pChar,nLen);
pCharDest[nLen]='\0';//最后要加上一个\0
nLen = strlen(pCharDest);
//将CString 拷贝到wchar数组中
TCHAR* pWChar = str.GetBuffer();
nLen = _tcslen(pWChar); //这个长度和str的长度是一样的，都是13
TCHAR* pWCharDest = new TCHAR[nLen+1];
wmemcpy(pWCharDest,pWChar,nLen);
pWCharDest[nLen]=_T('\0');
nLen = _tcslen(pWCharDest);
nMemLen = sizeof(TCHAR)*nLen;
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