本文整理自网络，侵删。
//前面要加几个pas单元
uses Registry,ShellApi, WinInet,ShlObj,ComObj;
procedure DelRegCache;
var
reg:TRegistry;
begin
reg:=Tregistry.create;
reg.RootKey:=HKEY_CURRENT_USER;
reg.DeleteKey(’Software\Microsoft\Internet Explorer\TypedURLs’);
reg.Free;
end;
function GetCookiesFolder:string;
var
pidl:pItemIDList;
buffer:array [ 0..255 ] of char ;
begin
SHGetSpecialFolderLocation(
application.Handle , CSIDL_COOKIES, pidl);
SHGetPathFromIDList(pidl, buffer);
result:=strpas(buffer);
end;
function ShellDeleteFile(sFileName: string): Boolean;
var
FOS: TSHFileOpStruct;
begin
FillChar(FOS, SizeOf(FOS), 0); {记录清零}
with FOS do
begin
wFunc := FO_DELETE;//删除
pFrom := PChar(sFileName);
fFlags := FOF_NOCONFIRMATION;
end;
Result := (SHFileOperation(FOS) = 0);
end;
//删除cookies
procedure DelCookie;
var
dir:string;
begin
try
InternetSetOption(nil, INTERNET_OPTION_END_BROWSER_SESSION, nil, 0);
dir:=GetCookiesFolder;
ShellDeleteFile(dir+’\*.txt’+#0); //网上很多代码这里没有加最后的#0，在xp下经测试会报错
except
abort;
end;
end;
//删除历史记录
procedure DelHistory;
var
lpEntryInfo: PInternetCacheEntryInfo;
hCacheDir: LongWord ;
dwEntrySize, dwLastError: LongWord;
begin
try
dwEntrySize := 0;
FindFirstUrlCacheEntry(nil, TInternetCacheEntryInfo(nil^), dwEntrySize);
GetMem(lpEntryInfo, dwEntrySize);
hCacheDir := FindFirstUrlCacheEntry(nil, lpEntryInfo^, dwEntrySize);
if hCacheDir 〈〉 0 then
DeleteUrlCacheEntry(lpEntryInfo^.lpszSourceUrlName);
FreeMem(lpEntryInfo);
repeat
dwEntrySize := 0;
FindNextUrlCacheEntry(hCacheDir, TInternetCacheEntryInfo(nil^),
dwEntrySize);
dwLastError := GetLastError();
if dwLastError = ERROR_INSUFFICIENT_BUFFER then //如果成功
begin
GetMem(lpEntryInfo, dwEntrySize); {分配dwEntrySize字节的内存}
if FindNextUrlCacheEntry(hCacheDir, lpEntryInfo^, dwEntrySize) then
DeleteUrlCacheEntry(lpEntryInfo^.lpszSourceUrlName);
FreeMem(lpEntryInfo);
end;
until (dwLastError = ERROR_NO_MORE_ITEMS);
except
abort;
end;
end;
//补充函数
type
TSTATURL = record
cbSize: DWORD;
pwcsUrl: DWORD;
pwcsTitle: DWORD;
ftLastVisited: FILETIME;
ftLastUpdated: FILETIME;
ftExpires: FILETIME;
dwFlags: DWORD;
end;
type
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;
type
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: TSTATURL): HResult; stdcall;
function BindToObject(pocsUrl: PWideChar; var riid: TGUID; out ppvOut: Pointer): HResult; stdcall;
function EnumUrls(out ppenum: IEnumSTATURL): HResult; stdcall;
end;
type
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;
function ClearIEHistory:integer;
const
CLSID_CUrlHistory: TGUID = '{3C374A40-BAE4-11CF-BF7D-00AA006946EE}';
var
IEHistory:IUrlHistoryStg2;
begin
IEHistory:=CreateComObject(CLSID_CUrlHistory) as IUrlHistoryStg2;
IEHistory.ClearHistory;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
try
DelRegCache;//清理注册表
DelCookie; //删除cookies(ie缓冲文件夹下面cookies文件）
DelHistory; //删除历史记录(ie缓冲文件夹下所有文件）
//C:\Documents and Settings\用户名\Local Settings\Temporary Internet Files
ClearIEHistory; //补充删除网页历史
except
abort;
end;
end;
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