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#53: How can I set a clock (system datetime) in MS Windows?

If you need set the system date and time in MS Windows from your application, then you can use the next code:

function ChangeSystemDateTime(dtNeeded: TDateTime): Boolean;
var
  tzi: TTimeZoneInformation;
  dtSystem: TSystemTime;
begin
  GetTimeZoneInformation(tzi);
  dtNeeded := dtNeeded + tzi.Bias / 1440;
  with dtSystem do
  begin
    wYear := StrToInt(FormatDateTime('yyyy', dtNeeded));
    wMonth := StrToInt(FormatDateTime('mm', dtNeeded));
    wDay := StrToInt(FormatDateTime('dd', dtNeeded));
    wHour := StrToInt(FormatDateTime('hh', dtNeeded));
    wMinute := StrToInt(FormatDateTime('nn', dtNeeded));
    wSecond := StrToInt(FormatDateTime('ss', dtNeeded));
    wMilliseconds := 0;
  end;
  Result := SetSystemTime(dtSystem);
end;

Published: December 10, 1999

See also

	SMImport suite
	SMDBGrid
	Protected Storage Viewer
	DBISAM Viewer
	DBISAM Password Recovery
	Viewer for MS Outlook Messages
	SMExport suite
	Paradox Viewer
	Paradox to Text converter
	ABA Document Convert

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