文件名称：DELPHI网络聊天
文件大小：229KB
文件格式：ZIP
更新时间：2016-11-30 05:08:32
网络聊天
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls, NMUDP, Buttons, Menus, ComCtrls,WinSock; type TForm1 = class(TForm) Panel1: TPanel; Edit1: TEdit; Label1: TLabel; NMUDP1: TNMUDP; BitBtn1: TBitBtn; Panel2: TPanel; Label2: TLabel; Label3: TLabel; Button1: TButton; Button2: TButton; GroupBox1: TGroupBox; ListBox1: TListBox; GroupBox2: TGroupBox; Memo1: TMemo; procedure BitBtn1Click(Sender: TObject); procedure NMUDP1DataReceived(Sender: TComponent; NumberBytes: Integer;FromIP: String; Port: Integer); procedure Edit1KeyPress(Sender: TObject; var Key: Char); procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure FormCreate(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; ComputerName: array[0..127] of Char; implementation {$R *.dfm} procedure TForm1.BitBtn1Click(Sender: TObject); var MyStream: TMemoryStream; TmpStr: String; i:integer; Begin if Edit1.Text<>'' then //如果所说的内容不为空,则发送。 begin NMUDP1.ReportLevel := Status_Basic; NMUDP1.RemotePort :=8888;//端口为：8888，可以自己定义，但必须与LocalPort相一致。 if ListBox1.Items[ListBox1.ItemIndex]=ComputerName then Edit1.Text:=ComputerName+'自言自语道:'+Edit1.Text //如果和自己对话. Else Edit1.Text:=ComputerName+'对'+ListBox1.Items[listbox1.itemindex]+'说:'+Edit1.Text; TmpStr :=Edit1.text; MyStream := TMemoryStream.Create; try MyStream.Write(TmpStr[1], Length(Edit1.Text)); if ListBox1.ItemIndex=0 then begin for i:=1 to ListBox1.Items.Count-1 do //如果选择"大家"，则对所有的网友发送信息 begin NMUDP1.RemoteHost :=ListBox1.Items[i];//远程主机的名称或地址. NMUDP1.SendStream(MyStream);//发送信息. End; end else begin NMUDP1.RemoteHost :=ListBox1.Items[ListBox1.itemindex]; //仅对所选中的网友. NMUDP1.SendStream(MyStream); End; finally MyStream.Free; end; Edit1.Text:=''; Edit1.SetFocus; end else Edit1.SetFocus; end; procedure TForm1.NMUDP1DataReceived(Sender: TComponent; NumberBytes: Integer; FromIP: String; Port: Integer); var MyStream: TMemoryStream; TmpStr: String; begin MyStream := TMemoryStream.Create; try NMUDP1.ReadStream(MyStream); SetLength(TmpStr,NumberBytes); MyStream.Read(TmpStr[1],NumberBytes); Memo1.Lines.Add(TmpStr); //显示对话的内容. finally MyStream.Free; end; end; procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char); var MyStream: TMemoryStream; TmpStr: String; i:integer; Begin if (key=#13) and (Edit1.Text<>'') then //如果所说的内容不为空，且最后一个按键为"Enter",则发送。 begin NMUDP1.ReportLevel := Status_Basic; NMUDP1.RemotePort :=8888; if ListBox1.Items[ListBox1.ItemIndex]=ComputerName then Edit1.Text:=ComputerName+'自言自语道:'+Edit1.Text else Edit1.Text:=ComputerName+'对'+ListBox1.Items[listbox1.itemindex]+'说:'+Edit1.Text; TmpStr :=Edit1.text; MyStream := TMemoryStream.Create; Memo1.Lines.Add(TmpStr); //显示对话的内容. try MyStream.Write(TmpStr[1], Length(Edit1.Text)); if ListBox1.ItemIndex=0 then begin for i:=1 to ListBox1.Items.Count-1 do begin NMUDP1.RemoteHost :=ListBox1.Items[i]; NMUDP1.SendStream(MyStream); end; end else begin NMUDP1.RemoteHost :=ListBox1.Items[ListBox1.itemindex]; NMUDP1.SendStream(MyStream); end; finally MyStream.Free; end; Edit1.Text:=''; edit1.SetFocus; end else Edit1.SetFocus; end; procedure TForm1.Button1Click(Sender: TObject); var InputString:String; begin //增加网友，输入的可以是IP地址或计算机名称。 InputString:=InputBox('增加人员', 'IP地址或计算机名', ''); if Inputstring<>'' then ListBox1.Items.Add(Inputstring); ListBox1.ItemIndex:=0; end; procedure TForm1.Button2Click(Sender: TObject); begin //删除当前选中的网友，但"大家"不能被删除. if ListBox1.ItemIndex<>0 then ListBox1.Items.Delete(ListBox1.ItemIndex); end; procedure TForm1.FormCreate(Sender: TObject); var sz: dword; begin memo1.Text:=' '; sz := SizeOf(Computername); GetComputerName(ComputerName, sz);//得到本机的标识 ListBox1.Items.Clear; ListBox1.Items.Add('大家');//在网友清单中，增加"大家"和 ListBox1.Items.Add(ComputerName);//本机名称 ListBox1.ItemIndex:=0; end; end.
【文件预览】：
网络聊天
----Unit1.ddp(51B)
----Project1.res(876B)
----Unit1.dcu(9KB)
----Unit1.~ddp(51B)
----Unit1.dfm(3KB)
----Project1.cfg(386B)
----Project1.dpr(188B)
----Unit1.~dfm(3KB)
----Project1.exe(422KB)
----Project1.dof(2KB)
----Unit1.~pas(4KB)
----Unit1.pas(4KB)