Using RAS

This procedure outlines how to connect with a RAS server.

    To use RAS

1. Determine which phone number to call.

   If the number is in the phone book, you can retrieve it with RasEnumEntries.

2. Establish a connection with RasDial.
   • Ignore the dialExtensions parameter, and set it to NULL.
   • Set the lpszPhoneBook parameter to NULL.

     Phone book entries are stored in the registry.

   • Set the dwNotifierType parameter to 0xFFFFFFFF.

     If the application needs to receive messages from RAS, the messages must be sent to an HWND. There is no support for callback functions.

   1. When the session is complete, terminate it with RasHangup.

If an HWND was specified in the RasDial call, it receives a WM_RASDIALEVENT message every time a change-of-state event occurs. The wParam and lParam values carry the following information:

• wParam: RASCONNSTATE indicates the state that the RasDial remote access connection process is about to enter.
• lParam: A non-zero value for dwError indicates which error has occurred.