如何用程序中断拔号连接？

Question

///////////////////////////////////////////////////////////////////
// File:        NetClose.H
// Version:     1.01#define NETBUFF_SIZE    0x208#define NetSessionEnum_PROFILE  ( DWORD (__stdcall *)         ( LPSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD ) )
#define NetSessionDel_PROFILE   ( DWORD (__stdcall *)                                 ( LPSTR, LPSTR, DWORD ) )
///////////////////////////////////////////////////////////////////
// File:        NetClose.CPP
// Version:     1.01
///////////////////////////////////////////////////////////////////
// Define:              BOOL NetCloseAll( VOID )
// Parameters:          None
// Return:              TRUE or FALSE
//
// Author:              Mr.Huang fei
// Time:                5/7/1998
// Note:                Can only be used on Windows95 & Windows98
// Re:              Close all network connections
///////////////////////////////////////////////////////////////////
BOOL NetCloseAll( VOID )
{
        BYTE    byBuff[NETBUFF_SIZE];
        DWORD   dwNetRet                = 0;;
        DWORD   i                       = 0;
        DWORD   dwEntries               = 0;
        DWORD   dwTotalEntries          = 0;
        LPSTR   szClient                = NULL;
        DWORD   dwUserName              = 0;
        BOOL    bRet                    = FALSE;
        LPBYTE  lpbyBuff = (LPBYTE)byBuff;        DWORD (__stdcall * hookNetSessionEnum)( LPSTR, DWORD,                                 LPBYTE, DWORD, LPDWORD, LPDWORD );
        DWORD (__stdcall * hookNetSessionDel)( LPSTR, LPSTR, DWORD );        HINSTANCE hMod = LoadLibrary( "SVRAPI.DLL" );
        if( hMod != NULL )
        {
                // Get the address of function
                hookNetSessionEnum = NetSessionEnum_PROFILE
                                     GetProcAddress
                                 ( hMod, TEXT("NetSessionEnum") );
                hookNetSessionDel  = NetSessionDel_PROFILE
                                     GetProcAddress
                                 ( hMod, TEXT("NetSessionDel") );                if( ( hookNetSessionDel != NULL ) &&
                    ( hookNetSessionEnum != NULL ) )
                {
                        dwNetRet = hookNetSessionEnum(  NULL,
                                           0x32, byBuff,
                                           NETBUFF_SIZE, &dwEntries,
                                           &dwTotalEntries );
                        if( dwNetRet == 0 )
                        {
                            bRet = TRUE;
                            for( i=0; i < dwTotalEntries; i++ )
                            {
                              szClient = (LPSTR)(((DWORD *)
                                             lpbyBuff)[0]);
                              dwUserName = ((DWORD *)lpbyBuff)[2];
                              dwNetRet = hookNetSessionDel( NULL,
                                            szClient, dwUserName );
                              if( dwNetRet != 0 )
                              {
                                      bRet = FALSE;
                                      break;
                              }
                              lpbyBuff += 26;
                            }
                        } // NetSessionEnum(...)
                        else
                                bRet = FALSE;
                } // GetProcAddress(...)
                else
                        bRet = FALSE;                FreeLibrary( hMod );
        } // LoadLibrary(...)
        return bRet;
}不是我的源马,你看一看把,我不知道能不能用