自学教程：C++ GetDateFormat函数代码示例

int SaveSessionDate(){	if (session_list[0] != 0) {		int TimeSize = GetTimeFormat(LOCALE_USER_DEFAULT, 0/*TIME_NOSECONDS*/, NULL, NULL, NULL, 0);		TCHAR *szTimeBuf = (TCHAR*)mir_alloc((TimeSize + 1)*sizeof(TCHAR));		GetTimeFormat(LOCALE_USER_DEFAULT, 0/*TIME_NOSECONDS*/, NULL, NULL, szTimeBuf, TimeSize);		int DateSize = GetDateFormat(LOCALE_USER_DEFAULT, DATE_SHORTDATE, NULL, NULL, NULL, 0);		TCHAR *szDateBuf = (TCHAR*)mir_alloc((DateSize + 1)*sizeof(TCHAR));		GetDateFormat(LOCALE_USER_DEFAULT, DATE_SHORTDATE, NULL, NULL, szDateBuf, DateSize);		int lenn = (DateSize + TimeSize + 5);		TCHAR *szSessionTime = (TCHAR*)mir_alloc(lenn*sizeof(TCHAR));		mir_sntprintf(szSessionTime, lenn, _T("%s - %s"), szTimeBuf, szDateBuf);		char szSetting[256];		mir_snprintf(szSetting, "%s_%d", "SessionDate", 0);		TCHAR *ptszSaveSessionDate = db_get_tsa(NULL, MODNAME, szSetting);		db_set_ts(NULL, MODNAME, szSetting, szSessionTime);		mir_free(szSessionTime);		if (ptszSaveSessionDate)			ResaveSettings("SessionDate", 1, g_ses_limit, ptszSaveSessionDate);		if (szTimeBuf)			mir_free(szTimeBuf);		if (szDateBuf)			mir_free(szDateBuf);	}	if (g_bCrashRecovery)		db_set_b(NULL, MODNAME, "lastSaveCompleted", 1);	return 0;}

void CGitPropertyPage::Time64ToTimeString(__time64_t time, TCHAR * buf, size_t buflen) const{	struct tm newtime;	SYSTEMTIME systime;	LCID locale = LOCALE_USER_DEFAULT;	if (!CRegDWORD(_T("Software//TortoiseGit//UseSystemLocaleForDates"), TRUE))		locale = MAKELCID((WORD)CRegStdDWORD(_T("Software//TortoiseGit//LanguageID"), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT)), SORT_DEFAULT);	*buf = '/0';	if (time)	{		TCHAR timebuf[MAX_STRING_LENGTH] = { 0 };		TCHAR datebuf[MAX_STRING_LENGTH] = { 0 };		_localtime64_s(&newtime, &time);		systime.wDay = (WORD)newtime.tm_mday;		systime.wDayOfWeek = (WORD)newtime.tm_wday;		systime.wHour = (WORD)newtime.tm_hour;		systime.wMilliseconds = 0;		systime.wMinute = (WORD)newtime.tm_min;		systime.wMonth = (WORD)newtime.tm_mon+1;		systime.wSecond = (WORD)newtime.tm_sec;		systime.wYear = (WORD)newtime.tm_year+1900;		if (CRegStdDWORD(_T("Software//TortoiseGit//LogDateFormat")) == 1)			GetDateFormat(locale, DATE_SHORTDATE, &systime, NULL, datebuf, MAX_STRING_LENGTH);		else			GetDateFormat(locale, DATE_LONGDATE, &systime, NULL, datebuf, MAX_STRING_LENGTH);		GetTimeFormat(locale, 0, &systime, NULL, timebuf, MAX_STRING_LENGTH);		*buf = '/0';		_tcsncat_s(buf, buflen, datebuf, MAX_STRING_LENGTH-1);		_tcsncat_s(buf, buflen, _T(" "), MAX_STRING_LENGTH-1);		_tcsncat_s(buf, buflen, timebuf, MAX_STRING_LENGTH-1);	}}

void ChangeTip(NOTIFYICONDATA* nid, SYSTEMTIME* time) {	TCHAR *buf, *datef = _T("dddd yyyy.MM.dd");	HANDLE heap = GetProcessHeap();	size_t n;	n = GetDateFormat(LOCALE_USER_DEFAULT, 0, time, datef, NULL, 0);	buf = (TCHAR*)HeapAlloc(heap, HEAP_ZERO_MEMORY, n * sizeof(TCHAR));	GetDateFormat(LOCALE_USER_DEFAULT, 0, time, datef, buf, n);	_stprintf_s(nid->szTip, 64, _T("%s %02d:%02d"), buf, time->wHour, time->wMinute);	HeapFree(heap, 0, buf);}

static TCHAR* parseLastSeenDate(ARGUMENTSINFO *ai){	if (ai->argc <= 1)		return NULL;	MCONTACT hContact = NULL;	CONTACTSINFO ci = { 0 };	ci.cbSize = sizeof(ci);	ci.tszContact = ai->targv[1];	ci.flags = 0xFFFFFFFF ^ (CI_TCHAR == 0 ? CI_UNICODE : 0);	int count = getContactFromString(&ci);	if (count == 1 && ci.hContacts != NULL) {		hContact = ci.hContacts[0];		mir_free(ci.hContacts);	}	else {		mir_free(ci.hContacts);		return NULL;	}	TCHAR *szFormat;	if (ai->argc == 2 || (ai->argc > 2 && mir_tstrlen(ai->targv[2]) == 0))		szFormat = NULL;	else		szFormat = ai->targv[2];	SYSTEMTIME lsTime = { 0 };	char *szModule = SEEN_MODULE;	lsTime.wYear = db_get_w(hContact, szModule, "Year", 0);	if (lsTime.wYear == 0)		return NULL;	lsTime.wMilliseconds = 0;	lsTime.wSecond = db_get_w(hContact, szModule, "Seconds", 0);	lsTime.wMinute = db_get_w(hContact, szModule, "Minutes", 0);	lsTime.wHour = db_get_w(hContact, szModule, "Hours", 0);	lsTime.wDay = db_get_w(hContact, szModule, "Day", 0);	lsTime.wDayOfWeek = db_get_w(hContact, szModule, "WeekDay", 0);	lsTime.wMonth = db_get_w(hContact, szModule, "Month", 0);	int len = GetDateFormat(LOCALE_USER_DEFAULT, 0, &lsTime, szFormat, NULL, 0);	TCHAR *res = (TCHAR*)mir_alloc((len + 1)*sizeof(TCHAR));	if (res == NULL)		return NULL;	if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &lsTime, szFormat, res, len) == 0) {		mir_free(res);		return NULL;	}	return res;}

ExportGSASnapshot::ExportGSASnapshot(CString filename, CString title, CWnd* pParent /*=NULL*/)  : CDialog(ExportGSASnapshot::IDD, pParent){  //{{AFX_DATA_INIT(ExportGSASnapshot)  m_desc = _T("");  m_notes = _T("");  m_title = _T("");  //}}AFX_DATA_INIT  m_title = title;  m_filename = filename;  char date[100];  char time[100];    GetDateFormat(LOCALE_USER_DEFAULT,                DATE_SHORTDATE,                NULL,                NULL,                date,                100);  GetTimeFormat(LOCALE_USER_DEFAULT,                0,                NULL,                NULL,                time,                100);  m_desc.Format("%s %s", date, time);}

wstring formatDate(StringBuffer& date) {        wstring dd(TEXT(""));    wchar_t* wdate = toWideChar(date);    if (wdate == NULL) {        return dd;    }    wchar_t data[80];    wchar_t formatDate[80];    int found = 0;    SYSTEMTIME timeDest;    swscanf_s(wdate, L"%4d%2d%2d", &timeDest.wYear, &timeDest.wMonth, &timeDest.wDay);        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SLONGDATE, data, 80);    dd = data;                if ((found = dd.find(TEXT("dddd, "))) != wstring::npos) {        dd.replace(found, 6, TEXT(""));    } else if ((found = dd.find(TEXT("dddd,"))) != wstring::npos) {        dd.replace(found, 5, TEXT(""));    }else if ((found = dd.find(TEXT("dddd"))) != wstring::npos) {        dd.replace(found, 4, TEXT(""));    }    trim(dd);                GetDateFormat(LOCALE_USER_DEFAULT, NULL, &timeDest, dd.c_str(), formatDate, 80);     dd = formatDate;    return dd;}

void edfheader_to_physical(EDFHEADERStruct * from, EDFHEADER_PHYSICALStruct * to){	int len,t;	char * ch;	SYSTEMTIME st;	char actdate[10];	char acttime[10];	len=256+256*from->channels;	ch=(char *)to;	for(t=0;t<256;t++,ch++) *ch=' ';	GetSystemTime(&st);              // gets current time	GetDateFormat(0, 0, &st, "dd.MM.yy" , actdate, 9);actdate[8]=0;	GetTimeFormat(0, 0, &st, "HH.mm.ss" , acttime, 9);acttime[8]=0;	strcpy(to->startdate,actdate); 	strcpy(to->starttime,acttime); 	strcpy(to->version,"0"); 	strcpy(to->patient,from->patient); 	strcpy(to->recording,from->device);    sprintf(to->records,"%d",from->segments);	sprintf(to->duration,"%d",1);	sprintf(to->channels,"%d",from->channels);	sprintf(to->headerlength,"%d",len);	ch=(char *)to;	for(t=0;t<256;t++,ch++) if (*ch==0) *ch=' ';	to->end=0;}

	BOOL CallContextDayNote(SYSTEMTIME Time, HWND hCalendar)	{		CStringArray arr;		arr.Add(_l("New reminder"));		arr.Add(_l("Add date to clipboard"));		int iSelection=SelectFromMenu(arr,0);		if(iSelection<0){			return 0;		}		if(iSelection==0){			return -1;		}		CString s="";		COleDateTime tm;//=COleDateTime(Time);		tm.SetDate(Time.wYear,Time.wMonth,Time.wDay);		if(strlen(szDateFormat)==0){			s=DateFormat(tm,FALSE);		}else{			SYSTEMTIME EventTime;			tm.GetAsSystemTime(EventTime);			char szTmp[1020]={0};			GetDateFormat(LOCALE_USER_DEFAULT,0,&EventTime,szDateFormat,szTmp,sizeof(szTmp));			s=szTmp;		}		BOOL bThroughGlobal=0;		USES_CONVERSION;		SetClipboardText(A2W(s),bThroughGlobal,0);		return 0;	};

//////////////////////////////////////////////////////////////////////// Methode : GetTime// Resume : Return Time cache entry// In : FILETIME ft : the cache entry// Out : CString Time of the cache entry //////////////////////////////////////////////////////////////////////CString GetTime(FILETIME ft){	SYSTEMTIME st;	char szLocalDate[255];	char szLocalTime[255];   	CString strtemp;	FileTimeToLocalFileTime( &ft, &ft );	FileTimeToSystemTime( &ft, &st );	GetDateFormat(	LOCALE_USER_DEFAULT, 					DATE_SHORTDATE, 					&st, 					NULL,					szLocalDate, 					255 );	GetTimeFormat(	LOCALE_USER_DEFAULT, 					0, 					&st, 					NULL, 					szLocalTime, 					255 );		strtemp = szLocalDate;	strtemp += " | ";	strtemp += szLocalTime ;	return (strtemp);}

/** /brief Translate calendar time into readable string representation * * Possible Results: * - returns buf if buf != NULL * - returns NULL if buf == NULL */os_size_tos_ctimeW_r(    os_timeW *t,    char *buf,    os_size_t bufsz){    os_size_t result = 0;    SYSTEMTIME systemTime;    FILETIME systemTimeSince1601;    DWORD64 dw64Time;    DWORD64 dw64MAXDWORD = MAXDWORD;    wchar_t format[32];    char *fstr;    /* Using win32 ctime here */    if (buf)    {        int iSizeOfBuffer;        dw64Time = (t->wt)/100;        systemTimeSince1601.dwHighDateTime = (dw64Time / (dw64MAXDWORD+1));        systemTimeSince1601.dwLowDateTime = (dw64Time % (dw64MAXDWORD+1));        FileTimeToSystemTime(&systemTimeSince1601, &systemTime);        /* Time is in UTC here */        GetDateFormat(LOCALE_SYSTEM_DEFAULT, 0, &systemTime, L"yyyy'-'MM'-'dd'T'HH':'mm':'ss", format, 32);        /* convert wide str to multi byte str */        fstr = wce_wctomb(format);        result = snprintf(buf, bufsz, "%s", fstr);        os_free(fstr);    }    return result;}

//**************************************************************************************************b8 A2Date::ToStr(s8 *str){	if (!*(s32*)&date) return 0;#ifdef	_WIN32	SYSTEMTIME	time;	time.wYear = date.y;	time.wMonth = date.m;	time.wDayOfWeek = 0;	time.wDay = date.d;	time.wHour = 0;	time.wMinute = 0;	time.wSecond = 0;	time.wMilliseconds = 0;	GetDateFormat(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &time, NULL, str, -1);#else//	sprintf(str, "%i.%i.%i", date.y, date.m, date.d);//	sprintf(str, "%i.%i.%i", date.d, date.m, date.y % 100);	sprintf(str, "%i/%i/%i", date.m, date.d, date.y % 100);#endif	return 1;}

/* * data_get_modified_string - 更新日
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