test.frm

test_rs232功能,test_rs232功能test_rs232功能test_rs232功能

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   4590
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7650
   LinkTopic       =   "Form1"
   ScaleHeight     =   4590
   ScaleWidth      =   7650
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "exit"
      Height          =   615
      Left            =   6120
      TabIndex        =   1
      Top             =   3480
      Width           =   1215
   End
   Begin VB.TextBox Text1 
      Height          =   2055
      Left            =   1200
      TabIndex        =   0
      Text            =   "Text1"
      Top             =   480
      Width           =   3615
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   240
      Top             =   480
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
      RThreshold      =   1
   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()
Timer1.Enabled = Not Timer1.Enabled

End Sub

Private Sub Command2_Click()
MSComm1.PortOpen = False
End
End Sub

Private Sub Command3_Click()
MSComm1.Output = Trim(Text2.Text)

End Sub

Private Sub Command4_Click()
Shape1.BackColor = RGB(255, 0, 0)
End Sub

Private Sub Form_Load()
MSComm1.PortOpen = True


End Sub

Private Sub MSComm1_OnComm()
Select Case MSComm1.CommEvent
    Case comEvCD
    Case comEvCTS
    Case comEvDSR
    Case comEvRing
    Case comEvReceive
 
Text1.Text = Trim(Text1.Text) + Trim(MSComm1.Input) & Chr(13)
    Case comEvSend
    End Select
    
End Sub

End Sub