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Set System Time NT

Posted on 1998-04-23
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Last Modified: 2010-04-06
Does someone have an easy reliable way of setting system time in NT and Win95 including AdjustTokenPrivileges in NT.  I'm just not getting it.

Thanks
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Question by:rcastle
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by:Greedy
ID: 1336693
Yeah I saw it...now to find it...the artile tile had time, nt and ID in it...found a 95 one...I'll keep looking for the NT one...

Setting time system with Delphi
abeldup@unison.co.za (Abel du Plessis)

"Vitor Martins" <nop47019@mail.telecom.pt wrote:


How can I set the clock system time and date in a program  with Delphi 2.0
in Win 95
This works for us:


--------------------------------------------------------------------------------

//******************************************************************************
//Public function SetPCSystemTime changes the system date and time.
//Parameter(s): tDati  The new date and time
//Returns:      True if successful
//              False if not
//******************************************************************************
function SetPCSystemTime(tDati: TDateTime): Boolean;
var
   tSetDati: TDateTime;
   vDatiBias: Variant;
   tTZI: TTimeZoneInformation;
   tST: TSystemTime;
begin
   GetTimeZoneInformation(tTZI);
   vDatiBias := tTZI.Bias / 1440;
   tSetDati := tDati + vDatiBias;
   with tST do
   begin
        wYear := StrToInt(FormatDateTime('yyyy', tSetDati));
        wMonth := StrToInt(FormatDateTime('mm', tSetDati));
        wDay := StrToInt(FormatDateTime('dd', tSetDati));
        wHour := StrToInt(FormatDateTime('hh', tSetDati));
        wMinute := StrToInt(FormatDateTime('nn', tSetDati));
        wSecond := StrToInt(FormatDateTime('ss', tSetDati));
        wMilliseconds := 0;
   end;
   SetPCSystemTime := SetSystemTime(tST);
end;

--------------------------------------------------------------------------------

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by:
Greedy earned 200 total points
ID: 1336694
taken from http://www.chami.com/tips/delphi/120496D.html

function SetPrivilege(
  sPrivilegeName : string;
  bEnabled : boolean )
    : boolean;
var
  TPPrev,
  TP         : TTokenPrivileges;
  Token      : THandle;
  dwRetLen   : DWord;
begin
  Result := False;

  OpenProcessToken(
    GetCurrentProcess,
    TOKEN_ADJUST_PRIVILEGES
    or TOKEN_QUERY,
    @Token );

  TP.PrivilegeCount := 1;
  if( LookupPrivilegeValue(
        Nil,
        PChar( sPrivilegeName ),
        TP.Privileges[ 0 ].LUID ) )then
  begin
    if( bEnabled )then
    begin
      TP.Privileges[ 0 ].Attributes  :=
        SE_PRIVILEGE_ENABLED;
    end else
    begin
      TP.Privileges[ 0 ].Attributes  :=
        0;
    end;

    dwRetLen := 0;
    Result := AdjustTokenPrivileges(
                Token,
                False,
                TP,
                SizeOf( TPPrev ),
                TPPrev,
                dwRetLen );
  end;

  CloseHandle( Token );
end;

procedure ChangeSystemTime;
var
  st : TSystemTime;
begin
  if( SetPrivilege(
        'SeSystemtimePrivilege',
        True ) )then
  begin
    GetLocalTime( st );

    //
    // change time using st structure
    // for example, to 10:30pm
    //
    st.wHour := 22;
    st.wMinute := 30;

    SetLocalTime( st );
    // or :
    // SetSystemTime( st );

    SetPrivilege(
      'SeSystemtimePrivilege',
      False );
  end;
end;

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Author Comment

by:rcastle
ID: 1336695
Thanks Greedy, doubling points for complete answer pointing out my stupidity and pointing me back at chami which I should have checked.
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LVL 1

Expert Comment

by:Greedy
ID: 1336696
No prob man...thanks
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