如何清除浏览历史？(100分)

如题，如何清除IE的历史记录？

可以修改注册表啊! 不过我也没做过，但肯定是可以的！

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
Activex, Comobj, StdCtrls, ComCtrls, Grids;

const

STATURL_QUERYFLAG_ISCACHED = $00010000;
STATURL_QUERYFLAG_NOURL = $00020000;
STATURL_QUERYFLAG_NOTITLE = $00040000;
STATURL_QUERYFLAG_TOPLEVEL = $00080000;

STATURLFLAG_ISCACHED = $00000001;
STATURLFLAG_ISTOPLEVEL = $00000002;


IID_IEnumStatUrl: TGUID = (D1: $3C374A42; D2: $BAE4; D3: $11CF; D4: ($BF, $7D, $00, $AA, $00, $69, $46, $EE));
IID_IUrlHistoryStg: TGUID = (D1: $3C374A41; D2: $BAE4; D3: $11CF; D4: ($BF, $7D, $00, $AA, $00, $69, $46, $EE));
IID_IUrlHistoryStg2: TGUID = (D1: $AFA0DC11; D2: $C313; D3: $831A; D4: ($83, $1A, $00, $C0, $4F, $D5, $AE, $38));
IID_IUrlHistoryNotify: TGUID = (D1: $BC40BEC1; D2: $C493; D3: $11D0; D4: ($83, $1B, $00, $C0, $4F, $D5, $AE, $38));

SID_IEnumStatUrl = '{3C374A42-BAE4-11CF-BF7D-00AA006946EE}';
SID_IUrlHistoryStg = '{3C374A41-BAE4-11CF-BF7D-00AA006946EE}';
SID_IUrlHistoryStg2 = '{AFA0DC11-C313-11d0-831A-00C04FD5AE38}';
SID_IURLHistoryNotify = '{BC40BEC1-C493-11d0-831B-00C04FD5AE38}';
CLSID_CUrlHistory: TGUID = '{3C374A40-BAE4-11CF-BF7D-00AA006946EE}';


type
STATURL = record
cbSize: DWORD;
pwcsUrl: DWORD;
pwcsTitle: DWORD;
ftLastVisited: FILETIME;
ftLastUpdated: FILETIME;
ftExpires: FILETIME;
dwFlags: DWORD;
end;


IEnumSTATURL = interface(IUnknown)
['{3C374A42-BAE4-11CF-BF7D-00AA006946EE}']
function Next(celt: Integer; out elt; pceltFetched: PLongint): HRESULT; stdcall;
function Skip(celt: Longint): HRESULT; stdcall;
function Reset: HResult; stdcall;
function Clone(out ppenum: IEnumSTATURL): HResult; stdcall;
function SetFilter(poszFilter: PWideChar; dwFlags: DWORD): HResult; stdcall;
end;

IUrlHistoryStg = interface(IUnknown)
['{3C374A41-BAE4-11CF-BF7D-00AA006946EE}']
function AddUrl(pocsUrl: PWideChar; pocsTitle: PWideChar; dwFlags: Integer): HResult; stdcall;
function DeleteUrl(pocsUrl: PWideChar; dwFlags: Integer): HResult; stdcall;
function QueryUrl(pocsUrl: PWideChar; dwFlags: Integer; var lpSTATURL: STATURL): HResult; stdcall;
function BindToObject(pocsUrl: PWideChar; var riid: TIID; out ppvOut: Pointer): HResult; stdcall;
function EnumUrls(out ppenum: IEnumSTATURL): HResult; stdcall;
end;

IUrlHistoryStg2 = interface(IUrlHistoryStg)
['{AFA0DC11-C313-11D0-831A-00C04FD5AE38}']
function AddUrlAndNotify(pocsUrl: PWideChar; pocsTitle: PWideChar; dwFlags: Integer;
fWriteHistory: Integer; var poctNotify: Pointer;
const punkISFolder: IUnknown): HResult; stdcall;
function ClearHistory: HResult; stdcall;
end;

IUrlHistoryNotify = interface(IOleCommandTarget)
['{BC40BEC1-C493-11d0-831B-00C04FD5AE38}']
end;



TForm1 = class(TForm)
StringGrid1: TStringGrid;
RetrieveBtn: TButton;
ClearBtn: TButton;
procedure RetrieveBtnClick(Sender: TObject);
procedure ClearBtnClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;
I: IUrlHistoryStg2;

implementation

{$R *.DFM}


function FileTimeToDt(Ft: TFileTime): TDateTime;
var
l: Integer;
lft: TFileTime;
begin
FileTimeToLocalFiletime(Ft, lft);
if FileTimeToDosDateTime(lft, Longrec(l).Hi, Longrec(l).Lo) then
result := FiledateToDatetime(l) else
result := 0;
end;


procedure TForm1.RetrieveBtnClick(Sender: TObject);//在STRINGGRID中显示历史记录
var
r: Staturl;
Enum: IEnumStatUrl;
X: Integer;
Row: Integer;
begin
StringGrid1.Cells[0, 0] := 'Last Visited';
StringGrid1.Cells[1, 0] := 'Title';
StringGrid1.Cells[2, 0] := 'Url';
StringGrid1.Cells[3, 0] := 'Last Updated';
StringGrid1.Cells[4, 0] := 'Expires';
Row := 0;
I := CreateComObject(ClsId_CUrlHistory) as IUrlHistoryStg2;
I.EnumUrls(Enum);
Enum.SetFilter('http://', 0);
while enum.next(1, r, @X) = S_OK do begin
Inc(Row);
StringGrid1.RowCount := Row + 1;
Stringgrid1.Cells[0, Row] := DateTimeToStr(FileTimeToDt(r.ftLastVisited));
Stringgrid1.Cells[1, Row] := PWidechar(Pointer(r.pwcsTitle));
Stringgrid1.Cells[2, Row] := PWidechar(Pointer(r.pwcsUrl));
Stringgrid1.Cells[3, Row] := DateTimeToStr(FileTimeToDt(r.ftLastUpdated));
Stringgrid1.Cells[4, Row] := DateTimeToStr(FileTimeToDt(r.ftExpires));
end;
end;

procedure TForm1.ClearBtnClick(Sender: TObject);//清空历史记录
begin
I.ClearHistory;
end;

end.

很好用，谢谢！
BTW，可以告诉我出处吗？

在 IE 窗口的菜单栏：
工具－》Internet 选项－》常规－》历史记录－》清除历史记录

接受答案了.

IE6不行！IE6不行！IE6不行！IE6不行！
怎么办？
注册表里的键值都还是一样的，可就是删不了。

帮dfs顶