CString-〉char*

方法1：

        //// 路径字符串。

CString strPathName == L“1q221“;

char szPathName[MAX_PATH]="";
int len = WideCharToMultiByte(CP_ACP,0,strPathName,strPathName.GetLength(),NULL,0,NULL,NULL);
WideCharToMultiByte(CP_ACP,0,strPathName,strPathName.GetLength() + 1 ,szPathName,len + 1 ,NULL,NULL);
szPathName[len] = '\0';   //多字节字符以'\0'结束

方法2：

#include"atlconv.h"

USES_CONVERSION;
const char*s = W2A(pathName.GetBuffer());