how to use rasapi32

[Mojik]

I need to dialup/hangup from my vb6 app, I think this can be done with rasapi32, but I new to API and I don't know how to use it. The two functions are RasDial and RasHangUp ...

Please help

Thanx a lot

[QWERTY]

'Make a new project. Add a module. To the form add a text box, a combo box and a command button.

'Code:
'Add this code to the module:

Option Explicit
Declare Function WriteFile& Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToWrite&, lpNumberOfBytesWritten&, ByVal lpOverlapped&)
Declare Function CreateFile& Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName$, ByVal dwDesiredAccess&, ByVal dwShareMode&, ByVal lpSecurityAttributes&, ByVal dwCreationDisposition&, ByVal dwFlagsAndAttributes&, ByVal hTemplateFile&)
Declare Function CloseHandle& Lib "kernel32" (ByVal hObject&)
Declare Function FlushFileBuffers& Lib "kernel32" (ByVal hFile&)
Public Const WAITSECONDS = 4
Public Const ID_CANCEL = 2
Public Const MB_OKCANCEL = 1
Public Const MB_ICONSTOP = 16, MB_ICONINFORMATION = 64

Function DialNumber(PhoneNumber, CommPort As String)
    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
    ' Ask the user to pick up the phone.
    Msg = "Please pickup the phone and choose OK to dial " & PhoneNumber
    MsgBoxType = MB_ICONINFORMATION + MB_OKCANCEL
    MsgBoxTitle = "Dial Number"
    If MsgBox(Msg, MsgBoxType, MsgBoxTitle) = ID_CANCEL Then
        Exit Function
    End If
    ' 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 Function

'Add this code to the form's load procedure:

Private Sub Form_Load()
    With Combo1
        .AddItem "COM1"
        .AddItem "COM2"
        .AddItem "COM3"
        .AddItem "COM4"
    End With
End Sub

'Add this code to the command button:

Private Sub Command1_Click()
    Temp = DialNumber(Text1.Text, Combo1.Text)
End Sub

DIDN'T TEST IT!!!!!

Post #507

[MartinRobins]

Using the RAS API calls, you can create connections to other networks and automatically dial-up and connect. This API is used behind the "Dial Up Networking" subsystem.

The calls available within RAS do not include a simple dialer function and therefore the code snippet above is the best starting point.

[Mojik]

Thanx 4 your help

[zdocteur]

to QWERTY,

Re the above code

i tried to dial the phone through the above code and when
prompted to pick up th e phone to dial the number nothing
happened.

my modem is on COM3

any idea what could B wrong ??

another question.
anyone knows how 2 connect the modem 2 the sound card i.e.
to send and recieve voice through the computer's speakers &
mic. to the modem. is there any certain API or add-in to do this job??

thanx in advance

zdocteur

[gwdash]

Why not use the MSComm control, it might be simpler, might not.

[zdocteur]

the MSComm control is good enough to dial up and hang up,
but i need to connect the modem to the computer's speakers and mic.

is there any VB control to access these devices and connect them to the modem ?!

regards

zdocteur

[gwdash]

There's something with the Microsoft Speach SDK, no that's just speack recognition over the phone, anyway, you could try that

[burner]

There is a great active x control made by Rod Hewitt called
RasDial.ocx It works well for connecting and
disconnecting, and it can also create/edit/delete phonebook
entries. The unregistered free version will
connect/disconnect, and the registered version ($25 US)
will do the phonebook stuff. http://www.coolstf.com