35. FAQ o Win API

Q> How to break off connection? 
A> 

bool HangUp () 
{ 
 RASCONN ras [20]; 
 DWORD dSize, dNumber; 
 char szBuf [256]; 

 ras [0].dwSize = sizeof (RASCONN); 
 dSize = sizeof (ras);//Get active RAS - Connection 
 DWORD dwRet = RasEnumConnections (ras, &dSize, &dNumber); 
 if (dwRet! = 0) 
 { 
  if (RasGetErrorString ((UINT) dwRet, (LPSTR) szBuf, 256)! = 0) 
   wsprintf ((LPSTR) szBuf, "Undefined RAS Enum Connections error (%ld).", dwRet 
);
  MessageBox ((LPSTR) szBuf, "RasHangUp", MB_OK | MB_ICONSTOP); 
  return false; 
 }
 bool bOK = true; 
 for (DWORD dCount = 0; dCount <dNumber; dCount ++) 
 {//Hang up that connection 
  HRASCONN hRasConn = ras [dCount].hrasconn; 
  DWORD dwRet = RasHangUp (hRasConn); 
  if (dwRet! = 0) 
  { 
   char szBuf [256]; 
   if (RasGetErrorString ((UINT) dwRet, (LPSTR) szBuf, 256)! = 0) 
    wsprintf ((LPSTR) szBuf, "Undefined RAS HangUp Error (%ld).", dwRet); 
   MessageBox ((LPSTR) szBuf, "RasHangUp", MB_OK | MB_ICONSTOP); 
   bOK = false; 
  }
 }
 return bOK; 
}