Get the list of computer names from windows network neighbour hood

Hai experts,

How do we get the list of computer names which are displayed in the network neighbourhood, programatically.
pradeep_pcAsked:
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mikepjConnect With a Mentor Commented:
unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm2 = class(TForm)
    Memo1: TMemo;
    procedure DisplayStruct(lpnr : PNETRESOURCE);
    function EnumerateFunc(lpnr : PNETRESOURCE) : Boolean;
    procedure NetErrorHandler(
       dwResult  : DWORD;
       const Msg : String);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

{$R *.DFM}


procedure TForm2.DisplayStruct(lpnr : PNETRESOURCE);
var
    p : PChar;
begin
    p := lpnr^.lpRemoteName;
    if (p[0] = '\') and (p[1] = '\') then
        p := p + 2;
    memo1.lines.Add(p);
    Caption := IntToStr(memo1.lines.Count);
end;

// Code by francois.piette@overbyte.be  http://www.overbyte.be
function TForm2.EnumerateFunc(lpnr : PNETRESOURCE) : Boolean;
var
    dwResult     : DWORD;
    dwResultEnum : DWORD;
    hEnum        : THandle;
    cbBuffer     : DWORD;             // 16K is a good size
    cEntries     : DWORD;             // enumerate all possible entries
    lpnrLocal    : PNETRESOURCE;      // pointer to enumerated structures
    PtrResource  : PNetResource;
    i            : DWORD;
begin
    cbBuffer := 16384;
    cEntries := DWORD(-1);

    if Application.Terminated then begin
        Result := FALSE;
        Exit;
    end;

    dwResult := WNetOpenEnum(RESOURCE_GLOBALNET,
                             RESOURCETYPE_ANY,
                             RESOURCEUSAGE_CONTAINER, // enumerate allresources
                             lpnr,                    // NULL first timethis function is called
                             hEnum);                  // handle to resource

    if dwResult <> NO_ERROR then begin
        NetErrorHandler(dwResult, 'WNetOpenEnum');
        Result := FALSE;
        Exit;
    end;

    repeat
        // Allocate memory for NETRESOURCE structures.
        GetMem(lpnrLocal, cbBuffer);

        dwResultEnum := WNetEnumResource(hEnum,       // resource handle
                                         cEntries,    // defined locally as0xFFFFFFFF
                                         lpnrLocal,   // LPNETRESOURCE
                                         cbBuffer);   // buffer size

        if dwResultEnum = NO_ERROR then begin
            for i := 0 to cEntries - 1 do begin
                PtrResource := PNETRESOURCE(PChar(lpnrLocal) + i *SizeOf(lpnrLocal^));
                if PtrResource^.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER then
                    DisplayStruct(PtrResource);
                Application.ProcessMessages;
                // If this NETRESOURCE is a container, call the function
                // recursively.
                if (RESOURCEUSAGE_CONTAINER = (PtrResource^.dwUsage and RESOURCEUSAGE_CONTAINER)) and
                   (PtrResource^.dwDisplayType <>RESOURCEDISPLAYTYPE_SERVER) then begin
                    if (not EnumerateFunc(PtrResource)) then begin
                        // TextOut(HandleDC, 10, 10, 'EnumerateFunc returned FALSE.', 29);
                    end;
                end;
            end;
        end
        else if dwResultEnum <> ERROR_NO_MORE_ITEMS then begin
            NetErrorHandler(dwResultEnum, 'WNetEnumResource');
            break;
        end;
    until dwResultEnum = ERROR_NO_MORE_ITEMS;

    FreeMem(lpnrLocal);

    dwResult := WNetCloseEnum(hEnum);

    if dwResult <> NO_ERROR then begin
        NetErrorHandler(dwResult, 'WNetCloseEnum');
        Result := FALSE;
        Exit;
    end;

    Result := TRUE;
end;

procedure TForm2.NetErrorHandler(
   dwResult  : DWORD;
   const Msg : String);
begin
    Application.MessageBox(PChar(Msg + ' Error #' + IntToStr(dwResult)),'Error', MB_OK);
end;

procedure TForm2.FormCreate(Sender: TObject);
begin
  EnumerateFunc(nil);
end;

end.
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alanwhincupCommented:
Look in the UDDF (http://www.gnomehome.demon.nl/uddf/) Networking Section.
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