新建VB工程,由工程菜單選部件項,在Microsoft Comm Control 6.0部件前打鉤確定,VB的工具箱中就有MSCOMM控件,添加到窗體.
Private Sub cmdSend_Click()
Dim strSend As String
strSend = Text2
MSComm1.Output = strSend
End Sub
Private Sub Form_Load()
MSComm1.Settings = "9600,n,8,1"
MSComm1.InputMode = comInputModeText '采用文本接收
MSComm1.InBufferCount = 0 '清空接受緩沖區
MSComm1.OutBufferCount = 0 '清空傳輸緩沖區
MSComm1.RThreshold = 1 '產生MSComm事件
MSComm1.PortOpen = True
Text1 = ""
End Sub
Private Sub MSComm1_OnComm() '接收數據
Dim strBuff As String
Select Case MSComm1.CommEvent
Case 2
strBuff = MSComm1.Input
Text1 = Text1 & strBuff
End Select
End Sub