form1.frm

这是一个２３２串口例程

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   4995
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7230
   LinkTopic       =   "Form1"
   ScaleHeight     =   4995
   ScaleWidth      =   7230
   StartUpPosition =   3  '窗口缺省
   Begin MSCommLib.MSComm MSComm1 
      Left            =   120
      Top             =   4320
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
   Begin VB.CommandButton Command2 
      Caption         =   "退出"
      Height          =   495
      Left            =   4680
      TabIndex        =   5
      Top             =   3840
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "发送"
      Height          =   495
      Left            =   2280
      TabIndex        =   4
      Top             =   3840
      Width           =   1095
   End
   Begin VB.TextBox Text2 
      Height          =   495
      Left            =   1320
      TabIndex        =   1
      Top             =   1920
      Width           =   4935
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   1320
      TabIndex        =   0
      Top             =   600
      Width           =   4935
   End
   Begin VB.Label Label2 
      Caption         =   "接收的数据"
      Height          =   495
      Left            =   120
      TabIndex        =   3
      Top             =   1920
      Width           =   1095
   End
   Begin VB.Label Label1 
      Caption         =   "发送的数据"
      Height          =   495
      Left            =   240
      TabIndex        =   2
      Top             =   600
      Width           =   975
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()

'...发送数据

MSComm1.OutBufferCount = 0 '...清空输出寄存器

MSComm1.Output = Text1.Text '...发送数据

End Sub

Private Sub Command2_Click()

'...退出

Unload Me

End Sub

Private Sub Form_Load()

'...初始化

MSComm1.CommPort = 1 '...使用Com1口

MSComm1.Settings = "9600,n,8,1" '...设置通讯参数

MSComm1.PortOpen = True '...打开串口

End Sub

Private Sub Mscomm1_Oncomm()

'...通讯事件发生

Select Case MSComm1.CommEvent

Case comEvReceive '...有接受事件发生

Text2.Text = MSComm1.Input '...接受显示数据

MSComm1.InBufferCount = 0 '...清空输入寄存器

End Select

End Sub