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Retreiving the IE's Proxy Settings.

Posted on 2001-07-26
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Last Modified: 2010-04-04
Hai Experts,

How can I retreive the Intenet Settings ( details of Proxy settings.. ) found in the Internet Explorer through a Delphi application?. Is there any Windows API for this?.
Please help...
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Question by:mrk_raj
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7 Comments
 
LVL 4

Expert Comment

by:StevenB
ID: 6325769
This might help:



procedure GetDefaultProxyServer(var Server, ByPass: string; var Port: Integer);
const
  BUF_SIZE: DWORD = 500;
var
  ProxyInfo: PInternetProxyInfo;
  Buffer: Pointer;
begin
  GetMem(Buffer, BUF_SIZE);
  try
    if not InternetQueryOption(nil, INTERNET_OPTION_PROXY, Buffer, BUF_SIZE) then
      RaiseLastWin32Error;
    ProxyInfo := Buffer;
    ByPass := ProxyInfo^.lpszProxyBypass;
    if (ProxyInfo^.lpszProxy = '') then begin
      Server := '';
      Port := 0;
    end else with TStringTokenizer.Create(ProxyInfo^.lpszProxy, [':']) do try
      Server := NextToken;
      if HasMoreTokens then
        Port := StrToInt(NextToken)
      else
        Port := 0;
    finally
      Free;
    end;
  finally
    FreeMem(Buffer);
  end;
end;
0
 
LVL 3

Accepted Solution

by:
rondi earned 150 total points
ID: 6325878
Use TRegistry.

I think IE's proxy settings are under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

The values in this registry key should tell you everything,
the proxy name, port, whether it's enabled, the protocol..
etc.

Code snippet:
-----------------------------------------------------

type
  TMyProxySettings = record
    Server: string[255];
    Port: integer;
    Enabled: boolean;
  end;

function GetProxySettings: TMyProxySettings;
const
  IE_REG_KEY = 'Software\Microsoft\Windows\CurrentVersion\Internet Settings';
  DEFAULT_PORT: integer = 80;
var
  reg: TRegistry;
  cp: integer;
  s: string;
begin
  reg := TRegistry.Create;
  try
    with reg do
    begin
      RootKey := HKEY_CURRENT_USER;
      if OpenKey(IE_REG_KEY,false) then
      begin
        //get server name & port (usually combined)
        s := ReadString('ProxyServer','');
        cp := Pos(':',s);
        if cp > 0 then
        begin
          result.Server := Copy(s,1,cp-1);
          result.Port := StrToIntDef(Copy(s,cp+1,length(s)-cp),DEFAULT_PORT);
        end
        else
        begin
          result.Server := s;
          result.Port := DEFAULT_PORT;
        end;
        //get proxy enabled state
        cp := ReadInteger('ProxyEnable',0);
        result.Enabled := cp > 0;
        //all done
        CloseKey;
      end
      else
      begin
        result.Server := '';
        result.Port := DEFAULT_PORT;
      end;
    end;
  finally
    reg.free;
  end;
end;

--------------------------------------------------------

Hope this helps,

rondi
0
 
LVL 3

Expert Comment

by:rondi
ID: 6325879
Use TRegistry.

I think IE's proxy settings are under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

The values in this registry key should tell you everything,
the proxy name, port, whether it's enabled, the protocol..
etc.

Code snippet:
-----------------------------------------------------

type
  TMyProxySettings = record
    Server: string[255];
    Port: integer;
    Enabled: boolean;
  end;

function GetProxySettings: TMyProxySettings;
const
  IE_REG_KEY = 'Software\Microsoft\Windows\CurrentVersion\Internet Settings';
  DEFAULT_PORT: integer = 80;
var
  reg: TRegistry;
  cp: integer;
  s: string;
begin
  reg := TRegistry.Create;
  try
    with reg do
    begin
      RootKey := HKEY_CURRENT_USER;
      if OpenKey(IE_REG_KEY,false) then
      begin
        //get server name & port (usually combined)
        s := ReadString('ProxyServer','');
        cp := Pos(':',s);
        if cp > 0 then
        begin
          result.Server := Copy(s,1,cp-1);
          result.Port := StrToIntDef(Copy(s,cp+1,length(s)-cp),DEFAULT_PORT);
        end
        else
        begin
          result.Server := s;
          result.Port := DEFAULT_PORT;
        end;
        //get proxy enabled state
        cp := ReadInteger('ProxyEnable',0);
        result.Enabled := cp > 0;
        //all done
        CloseKey;
      end
      else
      begin
        result.Server := '';
        result.Port := DEFAULT_PORT;
      end;
    end;
  finally
    reg.free;
  end;
end;

--------------------------------------------------------

Hope this helps,

rondi
0
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LVL 22

Expert Comment

by:Mohammed Nasman
ID: 6326905
Hello

 I post a comment in your previous quesiotn about the same thing, u posted ur quesiont twice, here's what i wrote there

procedure TForm1.Button1Click(Sender: TObject);
var
 Reg: TRegistry;
begin
 Reg := TRegistry.Create;
 Reg.RootKey := HKEY_CURRENT_USER;
 Reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Internet Settings',false);
 Edit1.Text :=Reg.ReadString('ProxyServer');
end;

Best regards
Mohammed Nasman
0
 

Author Comment

by:mrk_raj
ID: 6329554

Thank Rondi for sending me the answer & thank you one and all who has sent comments about my quetion.
0
 

Author Comment

by:mrk_raj
ID: 6329558

Thank Rondi for sending me the answer & thank you one and all who has sent comments about my quetion.
0
 
LVL 4

Expert Comment

by:StevenB
ID: 6332593
 ... however in answer to your question "Is there any Windows API for this?" the answer is "yes". If you want to investigate InternetQueryOption and rest of the Internet API further can I recommend this link.

http://msdn.microsoft.com/library/default.asp?url=/workshop/networking/wininet/overview/common.asp
0

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