般来说来电显示的信息为:
DATE = MMDD "来电日期 MMDD
TIME = HHMM "来电时间 HHMM
NMBR = ######## "来电号码
程序实现如下,设置MSComm1的相关设置,并建两个Label为Label1和Label2
Function OpenCID(OpenCLose As Boolean) As Boolean
'打开或是关毕来电显示功能
On Error Resume Next
Dim ArrCID(1) As String
ArrCID(0) = "at#cid=" & IIf(openclode, 1, 0)
ArrCID(1) = "at#vcid=" & IIf(openclode, 1, 0)
MSComm1.RThreshold = 0
For i = 0 To 1
MSComm1.Output = ArrCID(i) & vbCr
EndTime = Timer + 0.5
Do While bStop = False
nTemp = nTemp + 1
If MSComm1.InBufferCount >= 2 Then
sTemp = MSComm1.Input
If InStr(sTemp, "OK") = 0 Then
bStop = True
OpenCID = True
Exit Function
End If
End If
If Timer >= EndTime Or ErrorCode Then Exit Do
Loop
Next i
OpenCID = False
MSComm1.RThreshold = 1
End Function
下面的函数显示来电号码并在窗体上的Label1的Label2上显示出来
Private Sub MSComm1_OnComm()
On Error Resume Next
Static Buffer As String
' 收到多于 RThreshold 属性设置的字符数(RThreshold 属性必须大于 0)。
'label1 = "收到" + Str(MSComm1.InBufferCount) + "个字符"
Buffer = Buffer + MSComm1.Input
Buffer = UCase(Buffer)
'Buffer = "" '清缓冲区字符
ElseIf InStr(1, Buffer, "OK", vbTextCompare) And Asc(Right(Buffer, 1)) = 10 Then
If Zhen = False Then Buffer = "" '清缓冲区字符
If Command1.Caption = "挂断" Then
Label2.Caption = "状态:已经播通电话:" + txtCallNum
End If
End If
End Sub