C / C++ / MFC

CMyPresetViewer *PresetViewerDlg = new CMyPresetViewer;//creating a dynamic pointer to the presetdialog

if(PresetViewerDlg->DoModal()==IDOK)
{
//DO SOMETHING.....I HAVE DONE NOTHING THOUGH!!!!!
}

delete PresetViewerDlg;

THIZ IZ THE CODE THAT IZ WRITTEN IN THE MODAL DIALOG
void CMyPresetViewer::OnStatic1() //close button(x)//WHEN THE APPLICATION CLOSES
{

	// TODO: Add your control notification handler code here
	ReleaseDC(m_dcPresetViewerDialog);//m_dcPresetViewerDialog IZ A CDC POINTER DYNAMICALLY CREATED IN THE CONSTRUCTOR
	delete m_dcPresetViewerDialog;
	AfxMessageBox("done");
	CDialog::OnOK();	
}

BOOL CMyPresetViewer::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	m_DragOn=FALSE;

	CClientDC dc(this);
	m_dcPresetViewerDialog->CreateCompatibleDC( &dc );


	m_hBmpNew = (HBITMAP) LoadImage(
    AfxGetInstanceHandle(),   // handle to instance
    MAKEINTRESOURCE(IDB_BITMAP59),  // name or identifier of the image .say"C:\\NewFolder\\1.bmp"
    IMAGE_BITMAP,        // image types
    0,     // desired width
    0,     // desired height
    LR_CREATEDIBSECTION); 

    if( m_hBmpNew == NULL )
    {
        AfxMessageBox("Load Image Failed");
    }
    
    // put the HBITMAP info into the CBitmap (but not the bitmap itself)
    else {
        m_st0.GetClientRect( &rectStaticClient );
        rectStaticClient.NormalizeRect();
        m_size.cx=rectStaticClient.Size().cx;
        m_size.cy=rectStaticClient.Size().cy;
        m_size.cx = rectStaticClient.Width();    // zero based
        m_size.cy = rectStaticClient.Height();    // zero based

        // Convert to screen coordinates using static as base,
        // then to DIALOG (instead of static) client coords 
        // using dialog as base
        m_st0.ClientToScreen( &rectStaticClient );
        ScreenToClient( &rectStaticClient);
        
        GetObject( m_hBmpNew , sizeof(BITMAP), &m_bmInfo );
        VERIFY(m_hBmpOld = (HBITMAP)SelectObject(*m_dcPresetViewerDialog, m_hBmpNew )  );

        offsetx= rectStaticClient.left;
        offsety= rectStaticClient.top;
//		InvalidateRect(&rectStaticClient);
		}	




	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CMyPresetViewer::OnCancel() 
{
	// TODO: Add extra cleanup here
	
	CDialog::OnCancel();
}

void CMyPresetViewer::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here

	dc.BitBlt(offsetx,offsety,m_size.cx,m_size.cy,m_dcPresetViewerDialog, 0, 0,SRCCOPY);	

	// Do not call CDialog::OnPaint() for painting messages
}

}

SOCKET CMultycast_serverDlg::CreateTCPServerSocket(int PortNumber)
{
	// this function create a socket for each port
	int Socket = 0;                  /* socket to create */
    struct sockaddr_in echoServAddr; /* Local address    */
    int bind_res;
    WSADATA wsaData;
	CString string;
	unsigned long argp = 1;

    if(WSAStartup(0x202,&wsaData) == SOCKET_ERROR)
	{
		AfxMessageBox(" Error :  WSAStartup() has failed   ");
		return -1;
	}

    /*==== Create socket for incoming connections ====*/
	Socket = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
	if(Socket == INVALID_SOCKET)
	{
		string.Format("  Unable to create socket for port #%d  ",PortNumber);
		AfxMessageBox(string);
		return -1;
	}

 	ioctlsocket(Socket , FIONBIO , &argp);
   /*==== Construct local address structure ====*/
	memset(&echoServAddr,0,sizeof(echoServAddr));           //zero out structure
	echoServAddr.sin_family=AF_INET;                        //internet address family
	echoServAddr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);    //any incoming inteface
	echoServAddr.sin_port=htons(PortNumber);                //local address
    
    /*==== bind to the local address ====*/
	bind_res = bind(Socket,(struct sockaddr*)&echoServAddr,sizeof(echoServAddr));
	if(bind_res == SOCKET_ERROR)
	{
		string.Format("  Unable to create bind to local address for port #%d  ",PortNumber);
		AfxMessageBox(string);
		return -1;
	}

	/*==== mark the socket so it will listen for incoming connections ====*/
	if(listen(Socket,MAXPENDING) == SOCKET_ERROR)
	{
		string.Format("  Unable to listen to socket in port #%d  ",PortNumber);
		AfxMessageBox(string);
		return -1;
	}

	return Socket;
}