Как найти все комьютеры в сети

unit
 FindComp;

interface


uses

  Windows, Classes;

function
 FindComputers: DWORD;

var

  Computers: TStringList;

implementation


uses

  SysUtils;

const

  MaxEntries = 250;

function
 FindComputers: DWORD;

var

  EnumWorkGroupHandle, EnumComputerHandle: THandle;
  EnumError: DWORD;
  Network: TNetResource;
  WorkGroupEntries, ComputerEntries: DWORD;
  EnumWorkGroupBuffer, EnumComputerBuffer: array
[1..MaxEntries] of
 TNetResource;
  EnumBufferLength: DWORD;
  I, J: DWORD;

begin


  Computers.Clear;

  FillChar(Network, SizeOf(Network), 0);
  with
 Network do

  begin

    dwScope := RESOURCE_GLOBALNET;
    dwType := RESOURCETYPE_ANY;
    dwUsage := RESOURCEUSAGE_CONTAINER;
  end
;

  EnumError := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_ANY, 0, @Network,
    EnumWorkGroupHandle);

  if
 EnumError = NO_ERROR then

  begin

    WorkGroupEntries := MaxEntries;
    EnumBufferLength := SizeOf(EnumWorkGroupBuffer);
    EnumError := WNetEnumResource(EnumWorkGroupHandle, WorkGroupEntries,
      @EnumWorkGroupBuffer, EnumBufferLength);

    if
 EnumError = NO_ERROR then

    begin

      for
 I := 1 to
 WorkGroupEntries do

      begin

        EnumError := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_ANY, 0,
          @EnumWorkGroupBuffer[I], EnumComputerHandle);
        if
 EnumError = NO_ERROR then

        begin

          ComputerEntries := MaxEntries;
          EnumBufferLength := SizeOf(EnumComputerBuffer);
          EnumError := WNetEnumResource(EnumComputerHandle, ComputerEntries,
            @EnumComputerBuffer, EnumBufferLength);
          if
 EnumError = NO_ERROR then

            for
 J := 1 to
 ComputerEntries do

              Computers.Add(Copy(EnumComputerBuffer[J].lpRemoteName, 3,
                Length(EnumComputerBuffer[J].lpRemoteName) - 2));
          WNetCloseEnum(EnumComputerHandle);
        end
;
      end
;
    end
;
    WNetCloseEnum(EnumWorkGroupHandle);
  end
;

  if
 EnumError = ERROR_NO_MORE_ITEMS then

    EnumError := NO_ERROR;
  Result := EnumError;

end
;

initialization


  Computers := TStringList.Create;

finalization


  Computers.Free;

end
.

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