获取时间字符串

void SDlg::OnBnClickedBtnFull()
{
    this->ShowWindow(SW_MINIMIZE);
    Sleep(1000);

    int width = GetSystemMetrics(SM_CXSCREEN);
    int height = GetSystemMetrics(SM_CYSCREEN);　　　　

      CString mSecond;
      //要包含头文件#include <sys/timeb.h>
      struct _timeb timebuffer;
      _ftime(&timebuffer);
      mSecond.Format("%d",timebuffer.millitm);

    char szFileName[512];
    sprintf(szFileName, "%s.%03d.png", CTime::GetCurrentTime().Format("%Y%m%d%H%M%S"),atoi(mSecond));
    int iRet = GetImg(0, 0, width, height, szFileName);
    if ( iRet == 0 )
        AfxMessageBox("ok");
    else
        AfxMessageBox("fails");

    this->ShowWindow(SW_SHOWNORMAL);
    ::SetWindowPos(m_hWnd, (HWND)-1, 0, 0, 0, 0, 3);
}

#include <time.h>
#include <sys/timeb.h>

struct tm *ptm = NULL;
time_t currtime;
char s_currtime[9];

memset(s_currtime, 0x00, sizeof(s_currtime));
memset(&currtime, 0x00, sizeof(currtime));
time(&currtime);
ptm = localtime(&currtime);
sprintf(s_currtime, "%04d%02d%02d", ptm->tm_year+1900, ptm->tm_mon+1, ptm->tm_mday);


#define LOG_DATE_SEPARATOR '-'
memset(s_currtime, 0x00, sizeof(s_currtime));
//memset(&currtime, 0x00, sizeof(currtime));    
//time(&currtime);
//ptm = localtime(&currtime);
ftime(&tb);
ptm = localtime(&tb.time);
sprintf(s_currtime, "%04d%c%02d%c%02d %02d%c%02d%c%02d.%03d", ptm->tm_year + 1900, LOG_DATE_SEPARATOR ,
ptm->tm_mon + 1, LOG_DATE_SEPARATOR , ptm->tm_mday,
ptm->tm_hour, LOG_DATE_SEPARATOR , ptm->tm_min, LOG_DATE_SEPARATOR , ptm->tm_sec, tb.millitm);