如何读取系统日期时间呢??

[woxin2003]

给个例子啊啊

[wanilyer]

CTime t = CTime::GetCurrentTime()；

[cleverwyq]

CTime t = CTime::GetCurrentTime();
Extraction

GetDay Returns the day represent by the CTime object.
GetDayOfWeek Returns the day of the week represented by the CTime object.
GetHour Returns the hour represented by the CTime object.
GetMinute Returns the minute represented by the CTime object.
GetMonth Returns the month represented by the CTime object.
GetSecond Returns the second represented by the CTime object.
GetTime Returns a __time64_t value for the given CTime object.
GetYear Returns the year represented by the CTime object.

[coolzdp]

CTime t = CTime::GetCurrentTime();
CString strTime = t.Format(_T("%Y-%m-%d %H:%m:%S"));

[snowbirdfly]

void GetSystemTime(
LPSYSTEMTIME lpSystemTime
);

[snowbirdfly]

Changing a File Time to the Current Time

The following example sets the last-write time for a file to the current system time using the SetFileTime function.


// SetFileToCurrentTime - sets last write time to current system time
// Return value - TRUE if successful, FALSE otherwise
// hFile - must be a valid file handle

BOOL SetFileToCurrentTime(HANDLE hFile)
{
FILETIME ft;
SYSTEMTIME st;
BOOL f;

GetSystemTime(&st); // gets current time
SystemTimeToFileTime(&st, &ft); // converts to file time format
f = SetFileTime(hFile, // sets last-write time for file
(LPFILETIME) NULL, (LPFILETIME) NULL, &ft);

return f;
}

[saz]

SYSTEMTIME systime;
GetLocalTime(&systime);
sprintf(szTime, "%d-%d-%d %02d:%02d:%02d", systime.wYear, systime.wMonth, systime.wDay, systime.wHour, systime.wMinute, systime.wSecond);

[hurryboylqs]

获取时间首先需要一个结构SYSTEMTIME，它主要用于GetLocalTime和GetSystemTime函数。GetSystemTime函数传回目前的世界时间（Coordinated Universal Time，UTC），大概与英国格林威治时间相同。GetLocalTime函数传回当地时间，依据计算机所在的时区。这些值的精确度完全决定于使用者所调整的时间精确度以及是否指定了正确的时区。可以双击工作列的时间显示来检查计算机上的时区设定。

[asbeforelong]

获取当前具体时间，格式化时间
CTime t=CTime::GetCurrentTime(); //取出当前时间
int y=t.GetYear();
int d=t.GetDay();
int m=t.GetMonth();
int h=t.GetHour();
int min=t.GetMinute();
int s=t.GetSecond();

CString yy,dd,mm,hh,mins,ss,total;

yy.Format("%d",y);
dd.Format("%d",d);
mm.Format("%d",m);
if(h<10)
hh.Format("0%d",h);
else
hh.Format("%d",h);
if(min<10)
mins.Format("0%d",min);
else
mins.Format("%d",min);
if(s<10)
ss.Format("0%d",s);
else
ss.Format("%d",s);

total=yy+"-"+mm+"-"+dd+" "+hh+":"+mins+":"+ss;
MessageBox(total,"当前时间",MB_OK);

使用GetSystemTime()这个API函数得到系统时间
SYSTEMTIME ti;
GetSystemTime(&ti);
////我们可以通过读取SYSTEMTIME结构体成员直接得到时间
typedef struct _SYSTEMTIME {
WORD wYear;
WORD wMonth;
WORD wDayOfWeek;
WORD wDay;
WORD wHour;
WORD wMinute;
WORD wSecond;
WORD wMilliseconds;
} SYSTEMTIME, *PSYSTEMTIME;
例如:ti.wMilliseconds;可以得到毫秒时间
GetTimeFormat 格式化时间函数
The GetTimeFormat function formats a time as a time string for a specified locale. The function formats either a specified time or the local system time.

int GetTimeFormat(
LCID Locale, // locale for which time is to be formatted
DWORD dwFlags, // flags specifying function options
CONST SYSTEMTIME *lpTime, // time to be formatted
LPCTSTR lpFormat, // time format string
LPTSTR lpTimeStr, // buffer for storing formatted string
int cchTime // size, in bytes or characters, of the buffer
);

GetDateFormat
The GetDateFormat function formats a date as a date string for a specified locale. The function formats either a specified date or the local system date.

int GetDateFormat(
LCID Locale, // locale for which date is to be formatted
DWORD dwFlags, // flags specifying function options
CONST SYSTEMTIME *lpDate, // date to be formatted
LPCTSTR lpFormat, // date format string
LPTSTR lpDateStr, // buffer for storing formatted string
int cchDate // size of buffer
);

[hhyytt]

GetLocalTime(&systime);
GetSystemTime(&systime);
GetCurrentTime()；

[KevinCEC]

GetLocalTime(&systime);