如何设置系统时间

Question

如何通过程序修改系统时间啊
用CTime和COleDataTime,好像不行吧

Answer 1

SetSystemTime
The SetSystemTime function sets the current system time and date. The system time is expressed in Coordinated Universal Time (UTC). BOOL SetSystemTime(
  CONST SYSTEMTIME *lpSystemTime   // system time
);

Answer 2

viod SetTime()
{
  SYSTEMTIME time;
  time.wYear = ...;
  ...
  time.wMilliseconds =...
  SetSystemTime(time);
//OK
}SetSystemTime(CONST SYSTEMTIME *lpSystemTime   // system time
);
typedef struct _SYSTEMTIME { 
    WORD wYear; 
    WORD wMonth; 
    WORD wDayOfWeek; 
    WORD wDay; 
    WORD wHour; 
    WORD wMinute; 
    WORD wSecond; 
    WORD wMilliseconds; 
} SYSTEMTIME, *PSYSTEMTIME; 

Answer 3

struct tm *servertime;
time_t ltime,result;
ltime = down.m_ServerTime.GetTime()-(tm.Bias/60)*3600;
// 转换成本地时间
servertime = localtime( &ltime ); 
result = mktime(servertime);
CTime serverTime(mktime(servertime)); SYSTEMTIME systime;
systime.wYear         = serverTime.GetYear() ;
systime.wMonth        = serverTime.GetMonth();
systime.wDayOfWeek    = serverTime.GetDayOfWeek()-1;
systime.wDay       = serverTime.GetDay();
systime.wHour         = serverTime.GetHour();
systime.wMinute       = serverTime.GetMinute();
systime.wSecond       = serverTime.GetSecond();
systime.wMilliseconds = 0; if (SetLocalTime(&systime)== 0)
return false;