Time and Time again :)

[Scott Turchin]

OK So these threads and some free time I've had got me to looking at my silly Nuclear Time Server that I started last year...(It's humorous but it works)..

Anyway, so I am OUTPUTTING NIST time now, and I have most of the functions already in place minus one...

Determining if it is daylight savings time or not, or how to determine how many days until it reaches daylight savings time if we are in the month of DST conversion (Or back to Standard time)...

Is there an API call to do this or is thhis guesswork based on a numbered date?

Scott

-------------
Scott
mailto:[email protected][email protected]</A>

[Scott Wolfington]

Scott,

Doesn't the setSystemTime api function handle this automatically?

Scott

[Scott Wolfington]

Scott,

Here's one...

I want to get the difference between my system's time and the time server's time. I'd like to get this value in seconds. How do I go about subtracting two SYSTEMTIME's? I'm assuming I'd have to convert both times to FILETIME's. Not sure what's involved though.

Thanks,
Scott


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[Scott Turchin]

Try this This is my thread code for updating the systemtime and displaying it to the textbox (you may have to change your variables etc for control handles

'-----------------------------------------------------------------------------------
Function InitThread(ByVal x As Long) As Long
Local TdSt          As String
Local TmpSt         As String
Local Year          As String
Local Month         As String
Local Day           As String
Local Hour          As String
Local Minute        As String
Local Second        As String
Local s             As String
Local Y             As Long
Local Start         As Long
Local vbDate        As Double       '**DNJ**
Local Delay         As Double
Local st            As SYSTEMTIME   '**DNJ**
Local bc            As SYSTEMTIME 'Buffer BEFORE CHANGE
Local ac            As SYSTEMTIME 'Compare to AFTER CHANGE
Year   = " Year"
Month  = " Month"
Day    = " Day"
Hour   = " Hour"
Minute = " Minute"
Second = " Second"
s      = "s"


MousePtr 11
Menu Set State mMenu,%IDM_ACHECK,%MF_DISABLED
Menu Set State pMenu,%IDM_ACHECK,%MF_DISABLED
Control Set Text hDlg, %PCTIME,""
Control Set Text hDlg, %ATOMTIME,""
Control Set Text hDlg, %ID_NETDELAY,""

'Call the AtomicTime in DLL here....
PCTime = GetPCTimeandDate(DateFormat,TimeFormat," ",tzinfo)
If IsTrue SoundFlag Then Result = PlayWavFromResource(hInstance,WAVE + "2",WAV + "02")

GetLocalTime bc 'BEFORE CHANGE

MousePtr 11
UTCTime = CheckAtomicTime(nServer,Val(AtomPort),aTimeOut, Delay,st)
MousePtr 0
If IsTrue SoundFlag Then Result = PlayWavFromResource(hInstance,WAVE + "3",WAV + "03")

Statistics.AtomicChecked = Statistics.AtomicChecked + 1
Control Set Text hDlg, %ID_STATSTEXT2,Trim$(Str$(Statistics.AtomicChecked))
Control Set Text hDlg, %PCTIME,PCTime
Control Set Text hDlg, %ATOMTIME,UTCTime
Control Set Text hDlg, %ID_NETDELAY,Trim$(Str$(Delay)) + " ms"

If IsTrue UseLog Then
   LogEvent "**** Check Atomic Clock ****"
   LogEvent "PC Time:       " + PCTime
   LogEvent "Atomic Time:   " + UTCTime
   LogEvent "Network Delay: " + Trim$(Str$(Delay)) + " ms"
End If

If SoundFlag =  -999 Then SoundFlag = %TRUE 'Re-enable sound
'NIST TIME SERVER (Nuclear)
'51468 99-10-17 05:12:27 15 0 0 888.6 UTC(NIST) *
If Right$(UTCTime,2) = "* " Then
    ' Convert date and time to a SYSTEMTIME structure using a date VARIANT
    vbDate = StrToVbDate(Parse$(UTCTime, Any " ",2) + " " + Parse$(UTCTime, Any " ",3))
    VariantTimeToSystemTime vbDate, st
ElseIf Len(UTCTime) = 5 Then
     RFC868toSystemTime CvDwd(UTCTime), st
'ElseIf
   'Internet Time Server
   '"Wed, 13 Oct 1999 15:07:52 -0700"
ElseIf Len(UTCTime) < 2 Then
    Function = 0
    Exit Function
End If

'Verify we are running on Windows Server
osinfo.dwOsVersionInfoSize = SizeOf(osinfo)
GetVersionEx osinfo
If osinfo.dwPlatformId = %VER_PLATFORM_WIN32_NT Then
    ' Verify We're running Windows NT, adjust the process' token so that we can Set the time
    If IsTrue SetTimePrivilege Then
        Result = SendMessage(%HWND_BROADCAST, %WM_TIMECHANGE, 0, 0)
        Result = SetSystemTime(st)
    '   Use this for troubleshooting format only
    '    Control Set Text hDlg, %PCTIME,FormatOutPut(1) 'After adjustment
    Else
       Control Set Text hDlg, %PCTIME,"Error setting time! "
       Control Set Text hDlg, %ATOMTIME,"Could not gain rights to change the time"
       Exit Function
    End If
Else
    Result = SendMessage(%HWND_BROADCAST, %WM_TIMECHANGE, 0, 0)
    Result = SetSystemTime(st)
End If

'Use this code to display the time difference:
GetLocalTime ac

ac.wyear    = Abs(bc.wyear - ac.wyear)
ac.wmonth   = Abs(bc.wmonth - ac.wmonth)
ac.wday     = Abs(bc.wday - ac.wday)
ac.wHour    = Abs(bc.whour - ac.whour)
ac.wMinute  = Abs(bc.wMinute - ac.wminute)
ac.wsecond  = Abs(bc.wsecond - ac.wsecond)
If ac.wyear   <> 1 Then Year = Year + s
If ac.wmonth  <> 1 Then Month = Month + s
If ac.wday    <> 1 Then Day = Day + s
If ac.wHour   <> 1 Then Hour = Hour + s
If ac.wMinute <> 1 Then Minute = Minute + s
If ac.wsecond <> 1 Then Second = Second + s

TdSt = Trim$(Str$(ac.wyear)) + Year + " " + Trim$(Str$(ac.wmonth)) + Month + " " + Trim$(Str$(ac.wday)) + Day + " " +_
       Trim$(Str$(ac.whour)) + Hour + " " + Trim$(Str$(ac.wminute)) + Minute + " " + Trim$(Str$(ac.wsecond)) + Second + " "
Control Set Text hDlg, %IDTIMEDIFF, TdSt


Menu Set State mMenu,%IDM_ACHECK,%MF_ENABLED
Menu Set State pMenu,%IDM_ACHECK,%MF_ENABLED

'Set Global Flag to False here
g_lngInitThreadHandle = %FALSE
End Function

------------------
Scott
mailto:[email protected][email protected]</A>

[This message has been edited by Scott Turchin (edited April 08, 2000).]