ipaddressdlg.cpp

get ip address of all the hosts connected on the ethernet network by using matlab

// IPAddressDlg.cpp : implementation file
//

#include "stdafx.h"
#include "IPAddress.h"
#include "IPAddressDlg.h"

#include "Winsock2.h"		// This header file has been added in addition to the wizard 
							// generated code.

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CIPAddressDlg dialog

CIPAddressDlg::CIPAddressDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CIPAddressDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CIPAddressDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CIPAddressDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CIPAddressDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CIPAddressDlg, CDialog)
	//{{AFX_MSG_MAP(CIPAddressDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CIPAddressDlg message handlers

BOOL CIPAddressDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CIPAddressDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CIPAddressDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

HCURSOR CIPAddressDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CIPAddressDlg::OnOK() 
{
	CString strTemp;
	CListBox *pList = (CListBox*) GetDlgItem(IDC_LIST1);
	pList->ResetContent();

	struct hostent *host;	
	struct in_addr *ptr;	// To retrieve the IP Address

 	DWORD dwScope = RESOURCE_CONTEXT;
	NETRESOURCE *NetResource = NULL;	
	HANDLE hEnum;	
	WNetOpenEnum( dwScope, NULL, NULL, NULL, &hEnum );	
	
	WSADATA wsaData;  
	WSAStartup(MAKEWORD(1,1),&wsaData);

	if ( hEnum )	
	{
		DWORD Count = 0xFFFFFFFF;
		DWORD BufferSize = 2048;
		LPVOID Buffer = new char[2048];
		WNetEnumResource( hEnum, &Count, Buffer, &BufferSize );

		NetResource = (NETRESOURCE*)Buffer;

		char szHostName[200];

		for ( unsigned int i = 0; i < BufferSize/sizeof(NETRESOURCE); i++, NetResource++ )
		{	
			if ( NetResource->dwUsage == RESOURCEUSAGE_CONTAINER && NetResource->dwType == RESOURCETYPE_ANY )
			{
				if ( NetResource->lpRemoteName )
				{
					CString strFullName = NetResource->lpRemoteName;
					
					if ( 0 == strFullName.Left(2).Compare("\\\\") )
						strFullName = strFullName.Right(strFullName.GetLength()-2);

					gethostname( szHostName, strlen( szHostName ) );
					host = gethostbyname(strFullName);
					ptr = (struct in_addr *) host->h_addr_list[0];

					int a = ptr->S_un.S_un_b.s_b1;  // Eg. 211.40.35.76 split up like this.
					int b = ptr->S_un.S_un_b.s_b2;  //     40
					int c = ptr->S_un.S_un_b.s_b3;  //     35
					int d = ptr->S_un.S_un_b.s_b4;  //     76

					strTemp.Format("%s -->  %d.%d.%d.%d",strFullName,a,b,c,d);
					pList->AddString(strTemp);
				}
			}
		}
		delete Buffer;
		WNetCloseEnum( hEnum );
	}
	WSACleanup();	
}