MFC：CString类型转化成int和char[]通用办法

CString 转化 成int类型：

CString  str_port="12345";
int port = 0;
port = _ttoi(str_port); //转化成10进制;

CString转化成char[]，函数：

void CStringToChar(CString str, char ch[])
{
		char* tmpch;
		int wLen = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
		tmpch = new char[wLen + 1];
		WideCharToMultiByte(CP_ACP, 0, str, -1, tmpch, wLen, NULL, NULL);
		for (int i = 0; i < wLen; ++i)
			ch[i] = tmpch[i];

}