error C2664: 'strcpy_s' : cannot convert parameter 3 from 'CString' to 'const ch

[KFPA]

int _tmain(int argc, _TCHAR* argv[])
{
char n;
CString strTime; // 用于将CTime对象格式化为字符串
CTime curTime = CTime::GetCurrentTime();

cout<<GetExePath()<<endl;

/*cout<<"请输入要删除几天前的文件夹：";
cin>>n;
*/
cout<<argv[1]<<endl;

n=_ttoi(argv[1]);
// cout<<n<<endl;
CTime t=curTime-CTimeSpan(n,0,0,0);

strTime = t.Format(_T("db%Y%m%d*"));

//wcout<<(LPCTSTR)strTime<<endl;

CString m=strTime;

strcpy_s(s,256,GetExePath());
cout<<s<<endl;

strcat_s(s,256,m);
cout<<s<<endl;
transfer(s);

return 0;

1>shijianbijiao1.cpp(197): error C2664: 'strcpy_s' : cannot convert parameter 3 from 'CString' to 'const char *'
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1>shijianbijiao1.cpp(200): error C2664: 'strcat_s' : cannot convert parameter 3 from 'CString' to 'const char *'
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1

怎么解决呢

[二班的码农]

采用CString中的GetBuffer函数，将CString转换成char*

[QIUSQJF]

去看下《windows核心编程》的第二章