unit Main;
interface
uses
Windows, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, Registry, StdCtrls, ComCtrls, ExtCtrls;
type
TFrmMain = class(TForm)
Memo1: TMemo;
btEnumReg: TButton;
dtBeginDate: TDateTimePicker;
dtEndDate: TDateTimePicker;
dtBeginTime: TDateTimePicker;
dtEndTime: TDateTimePicker;
Panel1: TPanel;
Label1: TLabel;
Label2: TLabel;
procedure btEnumRegClick(Sender: TObject);
private
{ Private declarations }
RegDate: TDateTime;
RegKeyInfo: TRegKeyInfo;
TimeZoneInfo: TTimeZoneInformation;
function DateTimeToLocalDateTime(DateTime: TDateTime): TDateTime;
procedure FileTimeToDateTime(ft: TFileTime; var dt: TDateTime);
public
{ Public declarations }
end;
var
FrmMain: TFrmMain;
implementation
{$R *.dfm}
function TFrmMain.DateTimeToLocalDateTime(DateTime: TDateTime): TDateTime;
begin
case GetTimeZoneInformation(TimeZoneInfo) of
TIME_ZONE_ID_STANDARD:
Result := DateTime - (TimeZoneInfo.Bias / 60 / 24);
TIME_ZONE_ID_DAYLIGHT:
Result := DateTime - ((TimeZoneInfo.Bias + TimeZoneInfo.DaylightBias) / 60 / 24);
else
Result := 0;
end;
end;
procedure TFrmMain.FileTimeToDateTime(ft: TFileTime; var dt: TDateTime);
var
SystemTime: TSystemTime;
FileTime: TFileTime;
begin
if FileTimeToLocalFileTime(ft, FileTime) then
begin
FileTimeToSystemTime(ft, SystemTime);
dt := SystemTimeToDateTime(SystemTime);
end;
end;
procedure TFrmMain.btEnumRegClick(Sender: TObject);
var
Inizio, Fine: TDateTime;
procedure EnumAllKeys(hkey: THandle; KeyName: string);
var
l: TStringList;
n: Integer;
KeyName_: string;
begin
KeyName_ := KeyName;
with TRegistry.Create do
try
RootKey := hkey;
OpenKey(EmptyStr, False);
l := TStringList.Create;
try
GetKeynames(l);
CloseKey;
for n := 0 to l.Count - 1 do
begin
if OpenKey(l[n], False) then
begin
GetKeyInfo(RegKeyInfo);
with RegKeyInfo do
begin
FileTimeToDateTime(FileTime, RegDate);
RegDate := DateTimeToLocalDateTime(RegDate);
end;
if (RegDate <= Fine) and (RegDate >= Inizio) then
memo1.Lines.Add(DateTimeToStr(RegDate) + ' --- ' + KeyName_ + '\' + l[n]);
EnumAllKeys(CurrentKey, KeyName_ + '\' + l[n]);
CloseKey;
end;
end;
finally
l.Free
end;
finally
Free;
end;
end;
begin
Memo1.Clear;
Memo1.Lines.BeginUpdate;
Inizio := int(dtBeginDate.DateTime) + frac(dtBeginTime.DateTime);
Fine := int(dtEndDate.Date) + frac(dtEndTime.DateTime);
try
EnumAllKeys(HKEY_CURRENT_USER, 'HKey_Current_User');
finally
Memo1.Lines.EndUpdate;
end;
MessageDlg('Enumeration ended', mtInformation, [mbOK], 0);
end;
end.