Getting a client to beep through telnet can be a very complicated task. Pragma TelnetServer's Advanced Console and wrapper technology have allowed a system beep from a server application to pass to the client without any customization. Also with a slight modification an echo of beep to the console can also be passed.

Here is some sample code to beep from an application

VB

Imports System

Imports System.Threading

Imports System.Net

Imports System.Net.Sockets

Module Module1

    Private welcomeMessage As String = "Welcome VBBeep"

    Private Declare Function GetStdHandle Lib "kernel32" _

(ByVal nStdHandle As Long) As Long

    Private Declare Function _

            SetConsoleMode Lib "kernel32" _

            (ByVal hConsoleOutput As Long, _

    ByVal dwMode As Long) As Long

    Private Const ENABLE_PROCESSED_OUTPUT As Long = &H1

    Private Const STD_OUTPUT_HANDLE As Long = -11&

    Sub Main()

       '   These are 3 ways to beep

        Console.WriteLine(welcomeMessage)

 '   System beep calls with Advanced Console or Wrapper

  Console.Beep(200, 300)

        Console.Beep(500, 300)

        Console.Beep(700, 300)

  '   Character 7 echo to console with Advanced Console or Wrapper

        SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), Not (ENABLE_PROCESSED_OUTPUT))

        Console.WriteLine(Chr(7))

        Console.WriteLine("Beeped")

    End Sub

End Module

C

#include <stdio.h>

#include <windows.h>

void main( int argc, char **argv )

{

      DWORD Mode;

      HANDLE      hOutput = GetStdHandle(STD_OUTPUT_HANDLE);

      // System beep calls with Advanced Console or Wrapper

      Beep(2128,12);

      Beep(1824,4);

      Beep(2128,12);

// Character 7 echo to console with Advanced Console or Wrapper

      GetConsoleMode( hOutput, &Mode );

      Mode &= ~ENABLE_PROCESSED_OUTPUT;

      SetConsoleMode( hOutput, Mode );

      putchar(7);

      printf("%c",7);

      putchar(7);

      printf("%c",7);

      putchar(7);

      printf("%c",7);

}    

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