Proxy

tenho a unit abaixo que configura proxy.
Ela funciona... porem meu proxy ultiliza usuario e senha....

Alguem sabe como utilizar um proxy com usuario e senha ?


unit e0_Proxy;

interface

procedure SaveBeginInetSetting;
function RestoreBeginInetSetting:boolean;
function InetSessionToUserSetting(aEnProxy:boolean;
aStrIP,aStrPort:string):boolean;
function InetSessionToRegistrySetting:boolean;

implementation

uses windows,WinInet,UrlMon,
SysUtils;

var spBeginProxyStruct:PInternetProxyInfo;
len_spBeginProxyStruct:DWORD;



procedure SaveBeginInetSetting;
begin


InternetQueryOption
(nil,INTERNET_OPTION_PROXY,nil,len_spBeginProxyStruct);
spBeginProxyStruct:=AllocMem(len_spBeginProxyStruct);

InternetQueryOption(nil,INTERNET_OPTION_PROXY,spBeginProxyStruct,len_spBeginProxyStruct);

end;


function RestoreBeginInetSetting:boolean;
var
dreserved:dword;
x:dword;
p : INTERNET_PROXY_INFO;

begin
result := false;

p.dwAccessType := spBeginProxyStruct^.dwAccessType;
p.lpszProxyBypass := spBeginProxyStruct^.lpszProxyBypass;
p.lpszProxy := spBeginProxyStruct^.lpszProxy;
x := sizeof(p);
dreserved := 0;
if UrlMkSetSessionOption(INTERNET_OPTION_PROXY,@p,x,dreserved)<>S_Ok
then begin
Exit;
end;


result := true;
end;


function InetSessionToUserSetting(aEnProxy:boolean;
aStrIP,aStrPort:string):boolean;
var
p : INTERNET_PROXY_INFO;
x : integer;
dreserved : dword;
begin
result := false;
FillChar(p,sizeof(p),0);

if aEnProxy then begin
p.dwAccessType := INTERNET_OPEN_TYPE_PROXY;
p.lpszProxy := PChar(aStrIP+´:´+aStrPort);
end
else begin
p.dwAccessType := INTERNET_OPEN_TYPE_DIRECT;
p.lpszProxy := ´´;
end;

p.lpszProxyBypass := ´´;
x := sizeof(p);
dreserved := 0;
if UrlMkSetSessionOption(INTERNET_OPTION_PROXY,@p,x,dreserved)<>S_OK then
begin
Exit;
end;


result := true;

end;


function InetSessionToRegistrySetting:boolean;
var
hk : HKEY;
s : string;
BufSize : integer;
posStr : integer;
retType : DWORD;
isUsingProxy : DWORD;
begin
result := false;
s := ´´;
if RegOpenKeyEx(HKEY_CURRENT_USER,
´SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings´,
0,
KEY_ALL_ACCESS,
hk) = ERROR_SUCCESS then
begin
BufSize := SizeOf(isUsingProxy);
isUsingProxy := 0;
retType := REG_DWORD;
RegQueryValueEx(hk,
´ProxyEnable´,
nil,
@retType,
@isUsingProxy,
@bufSize);
if isUsingProxy > 0 then
begin
SetLength(s, MAX_PATH);
BufSize := length(s);
FillChar(s[1], MAX_PATH, #0);
retType := REG_NONE;
RegQueryValueEx(hk,
´ProxyServer´,
nil,
@retType,
@s[1],
@bufSize);
SetLength(s, bufsize);
if bufsize > 0 then
if s[length(s)] = 0 then SetLength(s, length(s)-1);
if length(s) > 0 then
begin
posStr := Pos(´http=´, LowerCase(s));
if posStr > 0 then
s := Copy(s, posStr+5, length(s));
posStr := Pos(´;´, s);
if posStr > 0 then
s := Copy(s, 1, posStr-1);

result := InetSessionToUserSetting(true,s,´´);
end;
end
else result := InetSessionToUserSetting(false,´´,´´);
RegCloseKey(hk);
end;
end;


end.