neighbordlg.cpp

Visual C++ 网络通信编程实用案例精选 的配套光盘

// NeighborDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Neighbor.h"
#include "NeighborDlg.h"
#include "DirectDriver.h"
#include "LocalNameDlg.h"
#include "HostNameDlg.h"
#include  "afxsock.h"
//#include "Ws2tcpip.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
#include <winnetwk.h>

#pragma comment(lib, "mpr.lib")

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()

/////////////////////////////////////////////////////////////////////////////
// CNeighborDlg dialog

CNeighborDlg::CNeighborDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CNeighborDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CNeighborDlg)
	m_NetListBox = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CNeighborDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CNeighborDlg)
	DDX_LBString(pDX, IDC_LIST, m_NetListBox);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CNeighborDlg, CDialog)
	//{{AFX_MSG_MAP(CNeighborDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_LISTBUTTON, OnListbutton)
	ON_BN_CLICKED(IDC_IPBUTTON, OnIpbutton)
	ON_BN_CLICKED(IDC_NAVIGATOR, OnNavigator)
	ON_BN_CLICKED(IDC_REDIRECT, OnRedirect)
	ON_BN_CLICKED(IDC_DISCONNECTDIRECT, OnDisconnectdirect)
	ON_BN_CLICKED(IDC_IPTOHOSTNAME, OnIptohostname)
	ON_BN_CLICKED(IDC_NETSEND, OnNetsend)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNeighborDlg message handlers

BOOL CNeighborDlg::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);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	if(AfxSocketInit(NULL)==FALSE)
	{
		AfxMessageBox("Socket Error");
	}
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CNeighborDlg::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 CNeighborDlg::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();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CNeighborDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

//-----------------------------------------------------------------------
//列取网上邻居
BOOL CNeighborDlg::Enumerate(LPNETRESOURCE lpNetRC_p,int depth)
{
	HANDLE hEnum = 0;
	DWORD dwScope = RESOURCE_GLOBALNET ;
	DWORD dwType = RESOURCETYPE_ANY ;

	DWORD dwResult = WNetOpenEnum(
	dwScope,	// scope of enumeration
	dwType,		// resource types to list
	0,			// enumerate all resources
	lpNetRC_p, // pointer to resource structure (NULL at first time)
	&hEnum		// handle to resource
	) ;

	if( dwResult != NO_ERROR )
		return FALSE;


	DWORD dwBuffer = 16384 ;		// 16K is reasonable size
	DWORD dwEntries = -1 ;			//-1, enumerate all possible entries
	LPNETRESOURCE lpnrLocal = 0;

	BOOL bRet = TRUE;

	do
	{
	// first allocate buffer for NETRESOURCE structures ...
		lpnrLocal = (LPNETRESOURCE) GlobalAlloc( GPTR, dwBuffer ) ;

		dwResult = WNetEnumResource(
		hEnum, // resource-handle
		&dwEntries,
		lpnrLocal,
		&dwBuffer
		) ;

		if( dwResult == NO_ERROR )
		{
			for(DWORD i = 0 ; i<dwEntries;i++)
			{
				CString nsname;
				nsname = lpnrLocal[i].lpRemoteName;
				nsname += " ";
				nsname +=lpnrLocal[i].lpLocalName;
				nsname += " ";
				nsname +=lpnrLocal[i].lpComment;
				
				CListBox *listbox=(CListBox*)GetDlgItem(IDC_LIST);
				if(depth==1)	//workgroup
				{
					listbox->AddString(nsname);
				}
				if(depth==2)	//user
				{
					listbox->AddString("   "+nsname);
					m_NeighborList.AddTail(nsname);
				}
				m_List.AddTail(nsname+CString(depth));


				if( RESOURCEUSAGE_CONTAINER == 
					(lpnrLocal[i].dwUsage & RESOURCEUSAGE_CONTAINER) )
				if( !Enumerate( &lpnrLocal[i],depth+1) )
				{
					//TRACE0( "CNetwork::Enumerate(): recursiv call failed\n" );
					//throw CNetworkBreak(FALSE);
					//	return FALSE;
				} 

			}
		} 
		else 
			if( dwResult != ERROR_NO_MORE_ITEMS ) 
			{
				return FALSE;
			}
	} while( dwResult != ERROR_NO_MORE_ITEMS );

	if( lpnrLocal )
		GlobalFree((HGLOBAL) lpnrLocal) ;
	WNetCloseEnum(hEnum) ;
	return bRet;
}

//列取网上邻居的按钮消息
void CNeighborDlg::OnListbutton() 
{
	CListBox *listbox=(CListBox*)GetDlgItem(IDC_LIST);
	listbox->ResetContent();
	BeginWaitCursor();
	EnableWindow(FALSE);
	Enumerate(0,0);
	EndWaitCursor();
	EnableWindow(TRUE);
	m_List.RemoveAll();
	m_NeighborList.RemoveAll();
}

BOOL CNeighborDlg::Enumerate2(LPNETRESOURCE lpnr,int depth)
{

  DWORD dwResult, dwResultEnum;
  HANDLE hEnum;
  DWORD cbBuffer = 16384;      // 16K is a good size
  DWORD cEntries = -1;         // enumerate all possible entries
  LPNETRESOURCE lpnrLocal;     // pointer to enumerated structures
  DWORD i;
  //
  // Call the WNetOpenEnum function to begin the enumeration.
  //
  dwResult = WNetOpenEnum(RESOURCE_GLOBALNET, // all network resources
                          RESOURCETYPE_ANY,   // all resources
                          0,        // enumerate all resources
                          lpnr,     // NULL first time the function is called
                          &hEnum);  // handle to the resource

  if (dwResult != NO_ERROR)
  {  
    //
    // Process errors with an application-defined error handler.
    //
    return FALSE;
  }
  //
  // Call the GlobalAlloc function to allocate resources.
  //
  lpnrLocal = (LPNETRESOURCE) GlobalAlloc(GPTR, cbBuffer);
  
  do
  {  
    //
    // Initialize the buffer.
    //
    ZeroMemory(lpnrLocal, cbBuffer);
    //
    // Call the WNetEnumResource function to continue
    //  the enumeration.
    //
    dwResultEnum = WNetEnumResource(hEnum,      // resource handle
                                    &cEntries,  // defined locally as -1
                                    lpnrLocal,  // LPNETRESOURCE
                                    &cbBuffer); // buffer size
    //
    // If the call succeeds, loop through the structures.
    //
    if (dwResultEnum == NO_ERROR)
    {
      for(i = 0; i < cEntries; i++)
      {
        // Call an application-defined function to
        //  display the contents of the NETRESOURCE structures.
        //
				CString nsname;
				nsname = lpnrLocal[i].lpRemoteName;
				nsname += " ";
				nsname +=lpnrLocal[i].lpLocalName;
				nsname += " ";
				nsname +=lpnrLocal[i].lpComment;
				
				CListBox *listbox=(CListBox*)GetDlgItem(IDC_LIST);
				listbox->AddString(nsname);
				m_List.AddTail(nsname+CString(depth));
        // If the NETRESOURCE structure represents a container resource, 
        //  call the EnumerateFunc function recursively.

        if(RESOURCEUSAGE_CONTAINER == (lpnrLocal[i].dwUsage
                                       & RESOURCEUSAGE_CONTAINER))
          if(!Enumerate2(&lpnrLocal[i],depth+1))
		  {
			 MessageBox("EnumerateFunc returned FALSE.");
		  }
      }
    }
    // Process errors.
    //
    else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
    {