Kod:
Function DialNumber(PhoneNumber, CommPort As String)
' PURPOSE: To dial a telephone number using the computer's modem
' ARGUMENTS:
' PhoneNumber: The telephone number to dial
' CommPort: The communications port the modem is connected
' to. Typically, modems are found on COM2, however,
' they can be configured for any COM port.
'
' EXAMPLE:
' Type the following in the Immediate window using a modem
' connected to the COM2 port:
'
' ? DialNumber("555-1212", "COM2")
'
' ***********************************************************
Dim MSG As String, MsgBoxType As Integer, MsgBoxTitle As String
Dim bModemCommand(256) As Byte, ModemCommand As String
Dim OpenPort As Long
Dim retval As Long, RetBytes As Long, i As Integer
Dim StartTime
' Open the communications port for read/write (&HC0000000).
' Must specify existing file (3).
OpenPort = CreateFile(CommPort, &HC0000000, 0, 0, 3, 0, 0)
If OpenPort = -1 Then
MSG = "Unable to open communication port " & CommPort
GoTo Err_DialNumber
End If
' Send the telephone number to the modem.
ModemCommand = "ATDT" & PhoneNumber & vbCrLf
' Pack the string in a Byte array.
For i = 0 To Len(ModemCommand) - 1
bModemCommand(i) = Asc(Mid(ModemCommand, i + 1, 1))
Next
' Write the string to the Com port.
retval = WriteFile(OpenPort, bModemCommand(0), _
Len(ModemCommand), RetBytes, 0)
If retval = 0 Then
MSG = "Unable to dial number " & PhoneNumber
GoTo Err_DialNumber
End If
' Flush the buffer to make sure it actually wrote
retval = FlushFileBuffers(OpenPort)
' Wait WAITSECONDS seconds for the phone to dial.
StartTime = Timer
While Timer < StartTime + WAITSECONDS
DoEvents
Wend
' Reset the modem and take it off line.
ModemCommand = "ATH0" & vbCrLf
' Pack the byte array again.
For i = 0 To Len(ModemCommand) - 1
bModemCommand(i) = Asc(Mid(ModemCommand, i + 1, 1))
Next
retval = WriteFile(OpenPort, bModemCommand(0), _
Len(ModemCommand), RetBytes, 0)
'Flush the buffer again.
retval = FlushFileBuffers(OpenPort)
' Close the communications port.
retval = CloseHandle(OpenPort)
Exit Function
Err_DialNumber: 'This is not an On Error routine.
MSG = MSG & vbCr & vbCr & _
"Make sure no other devices are using Com port " & CommPort
MsgBoxType = MB_ICONSTOP
MsgBoxTitle = "Dial Number Error"
MsgBox MSG, MsgBoxType, MsgBoxTitle
End FunctionKod:
Call DialNumber(me.telefonnumarasınınkutusu, "COM3")
