frmclient.frm

很好的学习资料可供参考有实例从图书馆着的希望有帮祝

VERSION 5.00
Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
Begin VB.Form frmClient 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "TCP客户端"
   ClientHeight    =   2610
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   7455
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2610
   ScaleMode       =   0  'User
   ScaleWidth      =   7573.333
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox txtOutput 
      Height          =   1140
      Left            =   120
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   7
      Top             =   840
      Width           =   7215
   End
   Begin VB.TextBox txtHost 
      Height          =   300
      Left            =   2880
      TabIndex        =   1
      Top             =   120
      Width           =   1935
   End
   Begin VB.CommandButton comdSendData 
      Caption         =   "发送"
      Height          =   300
      Left            =   6120
      TabIndex        =   4
      Top             =   2160
      Width           =   1215
   End
   Begin VB.CommandButton cmdConnect 
      Caption         =   "连接服务器"
      Height          =   300
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   1575
   End
   Begin MSWinsockLib.Winsock tcpClient 
      Left            =   6480
      Top             =   120
      _ExtentX        =   741
      _ExtentY        =   741
      _Version        =   393216
      RemoteHost      =   "IBMCSMY"
   End
   Begin VB.TextBox txtSendData 
      Height          =   300
      Left            =   960
      TabIndex        =   3
      Top             =   2160
      Width           =   5055
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      Caption         =   "服务器:"
      Height          =   180
      Left            =   2160
      TabIndex        =   6
      Top             =   120
      Width           =   630
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      Caption         =   "接收数据:"
      Height          =   180
      Left            =   120
      TabIndex        =   5
      Top             =   600
      Width           =   810
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "传送数据:"
      Height          =   180
      Left            =   120
      TabIndex        =   2
      Top             =   2160
      Width           =   810
   End
End
Attribute VB_Name = "frmClient"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub cmdConnect_Click()
    If tcpClient.State <> sckClosed Then
        tcpClient.Close  '关闭服务器连接
    End If
    tcpClient.RemoteHost = Trim(txtHost)  '设置远程主机
    tcpClient.Connect  '连接新的服务器
End Sub

Private Sub comdSendData_Click()
    '向远程计算机发送数据
    On Error GoTo ErrBar
    tcpClient.SendData txtSendData
    Exit Sub
ErrBar:
    MsgBox Error & Space(2) & Err
End Sub

Private Sub Form_Load()
    tcpClient.RemotePort = 1001  '设置远程端口
End Sub

Private Sub tcpClient_DataArrival(ByVal bytesTotal As Long)
    '接收远程计算机传送的数据
    Dim strData As String
    tcpClient.GetData strData
    txtOutput = txtOutput & Chr(13) & Chr(10) & strData
    txtOutput.SelStart = Len(txtOutput)
End Sub