C / C++ / MFC

//Next three lines are performed in a separate in a function that gets called from OnInitDlg()
m_pDASsocket = new CSPDSSSocket;
m_pDASsocket->Create(0,SOCK_STREAM, FD_READ | FD_CONNECT | FD_WRITE);
m_pDASsocket->m_pMain = (CMyGUIDlg*)this;



void CMyGUIDlg::OnBnClickedmfp()
{
	PBYTE pBuf;
	pBuf = new BYTE[8];
	//FILE * file;
	char startrecvchar = 100;

	if(m_bSocketConnected)
	{   
		m_pDASsocket->Send(&startrecvchar,1);

		// psuedo code
		if ( m_pDASsocket->Receive(pBuf,8) == SOCKET_ERROR )
		{
		  int iErr = WSAGetLastError();
		  if ( iErr == WSAEWOULDBLOCK )
		  {
			TRACE("OnBnClickedmfp: WSAEWOULDBLOCK");
		  }
		  else
		  {
			  TRACE("OnBnClickedmfp: a ""bad"" error occurred and must be handled");
		  }
		}
		else
		{
			TRACE("OnBnClickedmfp: Receive succeeded");
		}
	}


			
	delete [] pBuf;


}