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unit Chatmain;

interface

uses
  Classes, Messages, SysUtils, Graphics, Controls, ShellApi,
  Dialogs, Forms, Windows, QControls, QStdCtrls, QExtCtrls, QButtons,
  QForms, Sockets, QMenus, QTypes;


type
  TForm1 = class(TForm)
    memRecv: TMemo;
    Panel1: TPanel;
    memSend: TMemo;
    Panel2: TPanel;
    btnSend: TButton;
    TcpClient1: TTcpClient;
    TcpServer1: TTcpServer;
    Panel3: TPanel;
    Label1: TLabel;
    edtRemoteHost: TEdit;
    combohide: TComboBox;
    btnhide: TButton;
    Label2: TLabel;
    ComboBox1: TComboBox;
    procedure btnSendClick(Sender: TObject);
    procedure TcpServer1Accept(sender: TObject;
      ClientSocket: TCustomIpClient);
    procedure btnActivateServerClick(Sender: TObject);
    procedure memSendKeyPress(Sender: TObject; var Key: Char);

  private
    { Private declarations }
  public
    { Public declarations }

  end;

  // you must create your own thread to synch
  // writing to a gui component
  TClientDataThread = class(TThread)
  private
  public
    ListBuffer :TStringList;
    TargetList :TStrings;
    procedure synchAddDataToControl;
    constructor Create(CreateSuspended: Boolean);
    procedure Execute; override;
    procedure Terminate;
  end;

var
  Form1: TForm1;
  //DataThread: TClientDataThread;

implementation

{$R *.xfm}
//start netcheck()

type 
  PNetResourceArray = ^TNetResourceArray; 
  TNetResourceArray = array[0..100] of TNetResource; 
Function CreateNetResourceList(ResourceType: DWord; 
                               NetResource: PNetResource;
                               out Entries: DWord; 
                               out List: PNetResourceArray): Boolean; 
var EnumHandle: THandle; 
    BufSize: DWord; 
    Res: DWord; 
begin 
Result := False; 
List := Nil;
Entries := 0; 
if WNetOpenEnum(RESOURCE_GLOBALNET, ResourceType,0,NetResource,EnumHandle) =  
NO_ERROR 
then begin 
     try 
      BufSize := $4000;   // 16 kByte 
      GetMem(List, BufSize); 
      try
        repeat
          Entries := DWord(-1); 
          FillChar(List^, BufSize, 0); 
          Res := WNetEnumResource(EnumHandle, Entries, List, BufSize); 
          if Res = ERROR_MORE_DATA 
          then begin 
               ReAllocMem(List, BufSize); 
               end;
        until Res <> ERROR_MORE_DATA; 
        Result := Res = NO_ERROR; 
        if not Result 
        then begin 
             FreeMem(List); 
             List := Nil; 
             Entries := 0; 
             end;
      except 
        FreeMem(List); 
        raise; 
      end; 
    finally 
      WNetCloseEnum(EnumHandle); 
    end;
  end; 
end; 

procedure ScanNetworkResources(ResourceType, DisplayType: DWord; List:  
TStrings); 

procedure ScanLevel(NetResource: PNetResource);
var 
  Entries: DWord; 
  NetResourceList: PNetResourceArray; 
  i: Integer; 
begin 
  if CreateNetResourceList(ResourceType, NetResource, Entries, NetResourceList)
then try 
    for i := 0 to Integer(Entries) - 1 do begin 
      if (DisplayType = RESOURCEDISPLAYTYPE_GENERIC) or 
         (NetResourceList[i].dwDisplayType = DisplayType) then begin 
        List.AddObject(NetResourceList[i].lpRemoteName,
                       Pointer(NetResourceList[i].dwDisplayType)); 
      end; 
      if (NetResourceList[i].dwUsage and RESOURCEUSAGE_CONTAINER) <> 0 then 
        ScanLevel(@NetResourceList[i]); 
    end;
  finally 
    FreeMem(NetResourceList); 
  end; 
end;

begin 
  ScanLevel(Nil);
end; 



//endnetcheck()

//------------- TClientDataThread impl -----------------------------------------
constructor TClientDataThread.Create(CreateSuspended: Boolean);
begin
  inherited Create(CreateSuspended);
  FreeOnTerminate := true;
  ListBuffer := TStringList.Create;
end;

procedure TClientDataThread.Terminate;
begin
  ListBuffer.Free;
  inherited;
end;

procedure TClientDataThread.Execute;
begin
  Synchronize(synchAddDataToControl);
end;

procedure TClientDataThread.synchAddDataToControl;
begin
 TargetList.AddStrings(ListBuffer);
end;
//------------- end TClientDataThread impl -------------------------------------


procedure TForm1.btnActivateServerClick(Sender: TObject);
var LB : TStringList;
begin
  TcpServer1.LocalPort := '5705' ;
  TcpServer1.Active := True;

//start netcheck()

  LB:= TStringList.Create;
  ScanNetworkResources(RESOURCETYPE_DISK, RESOURCEDISPLAYTYPE_SERVER, LB);

  ComboBox1.Items.BeginUpdate;
  ComboBox1.Items.Assign(lb);
  ComboBox1.Items.EndUpdate;

  LB.Free;

//end netcheck ()

end;

procedure TForm1.btnSendClick(Sender: TObject);
var
  I: Integer;
  host:string;
begin
if memsend.Text <> '' then
  begin
  host := combobox1.Text;
    while Pos('\', host) > 0 do
    host[Pos('\', host)] := #0;

    TcpClient1.RemoteHost := host;
    TcpClient1.RemotePort := '5705';
    showmessage(combobox1.Text);
    try
      if TcpClient1.Connect then
        for I := 0 to memSend.Lines.Count - 1 do
        TcpClient1.Sendln(memSend.Lines[I]);
    finally
      TcpClient1.Disconnect;
    end;
    //by Smokers start
    memrecv.Text := memrecv.text + #13+#10 + 'Du sagtest: ' +#13+#10+ memsend.Text;
    memsend.Clear;
    memsend.SetFocus;
  end;
end;

procedure TForm1.TcpServer1Accept(sender: TObject;
  ClientSocket: TCustomIpClient);
var
  s: string;
  DataThread: TClientDataThread;
begin
  // create thread
  DataThread:= TClientDataThread.Create(true);
  // set the TagetList to the gui list that you
  // with to synch with.
  DataThread.TargetList := memRecv.lines;

  // Load the Threads ListBuffer
  DataThread.ListBuffer.Add('__ "'+ClientSocket.LookupHostName(ClientSocket.RemoteHost) + '" schreibt: __');
  s := ClientSocket.Receiveln;
  while s <> '' do
  begin
    DataThread.ListBuffer.Add(s);
    s := ClientSocket.Receiveln;
  end;


  // Call Resume which will execute and synch the
  // ListBuffer with the TargetList
  DataThread.Resume;

end;

procedure TForm1.memSendKeyPress(Sender: TObject; var Key: Char);
begin
if key = #13 then
  begin
    btnsend.Click;
    key:= #0;

  end;

end;

end.