myqqdlg.cpp

自己编写的一个聊天软件

// MyQQDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyQQ.h"
#include "MyQQDlg.h"

#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()

/////////////////////////////////////////////////////////////////////////////
// CMyQQDlg dialog

CMyQQDlg::CMyQQDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyQQDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyQQDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyQQDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyQQDlg)
	DDX_Control(pDX, IDC_LIST1, m_listMsg);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyQQDlg, CDialog)
	//{{AFX_MSG_MAP(CMyQQDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_CLIENT_ACCEPT, OnAccept)
	ON_MESSAGE(WM_CLIENT_READCLOSE, OnReadClose)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyQQDlg message handlers

BOOL CMyQQDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMyQQDlg::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 CMyQQDlg::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 CMyQQDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMyQQDlg::OnOK() 
{
	// TODO: Add extra validation here

	//Call Windows Sockets DLL
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2,1),&wsaData)) 
	{ 
         MessageBox("Error Calling Windows Sockets DLL!", "Run Time Error", MB_ICONERROR);
         WSACleanup();
         return;
	}

	//Create Listening Socket
    if((m_sockServer=socket(PF_INET,SOCK_STREAM,0)) == INVALID_SOCKET)
	{
         MessageBox("Error Creating Listening Socket!", "Run Time Error", MB_ICONERROR);
         return;
	}

	//Initialize Listening Address
	m_sockServerAddr.sin_family = AF_INET;
    m_sockServerAddr.sin_addr.s_addr = INADDR_ANY;
    m_sockServerAddr.sin_port = htons(8001);
	
	//Bind Listening Socket & Address
	if (bind(m_sockServer,(LPSOCKADDR)&m_sockServerAddr,sizeof(m_sockServerAddr)) == SOCKET_ERROR) //与选定的端口绑定
    {
	    MessageBox("Error Binding Listening Socket & Address!", "Run Time Error", MB_ICONERROR);
        return;
	}

    //Set WM_CLIENT_ACCEPT Message
	if (WSAAsyncSelect(m_sockServer,m_hWnd,WM_CLIENT_ACCEPT,FD_ACCEPT) == SOCKET_ERROR) 
	{
         MessageBox("Error Setting WM_CLIENT_ACCEPT Message!", "Run Time Error", MB_ICONERROR);
         return;
	}
	
	//Start Listening
    if (listen(m_sockServer,1) == SOCKET_ERROR)
	{
		MessageBox("Error Starting Listening!", "Run Time Error", MB_ICONERROR);
        return;
	}
	else m_listMsg.InsertString(0, "Server Started Successfully!");

    return; 

	CDialog::OnOK();
}

LRESULT CMyQQDlg::OnAccept(WPARAM wParam,LPARAM lParam)
{	
	//Check On Self-Defined Message WM_CLIENT_ACCEPT
	if (WSAGETSELECTERROR(lParam))
	{
		MessageBox("Error Receiving Message WM_CLIENT_ACCEPT!", "Run Time Error", MB_ICONERROR);
		return 0L;
	}

	if(WSAGETSELECTEVENT(lParam) == FD_ACCEPT)
	{
		//Accept Client Connection Request
		SOCKET sockClient;
	    if ((sockClient = accept(m_sockServer,(LPSOCKADDR)&m_sockServerAddr,0)) == INVALID_SOCKET)
		{
			MessageBox("Error Accepting Client Connection Request!", "Run Time Error", MB_ICONERROR);
			return 0L;
		}
		else m_listMsg.InsertString(0, "New Connection Established Successfully!");
		
		//Set WM_CLIENT_READCLOSE Message
		if (WSAAsyncSelect(sockClient,m_hWnd,WM_CLIENT_READCLOSE,FD_READ|FD_CLOSE) == SOCKET_ERROR) 
		{
			MessageBox("Error Setting WM_CLIENT_READCLOSE Message!", "Run Time Error", MB_ICONERROR);
			return 0L;
		}
		
		//Add A New Client To the Client List
		m_sockClientArray.Add(sockClient);
	}
	
	return 0L;
}

LRESULT CMyQQDlg::OnReadClose(WPARAM wParam,LPARAM lParam)
{	
	//Check On Self-Defined Message WM_CLIENT_READCLOSE
	int nIdx = 0;
	CString strMsg;

	switch (WSAGETSELECTEVENT(lParam))
	{
		case FD_READ:
			//Receive Client Message
			if(recv((SOCKET)wParam,(char *)&msg,sizeof(msg),0) == SOCKET_ERROR)
			{
				MessageBox("Error Receiving Client Message!", "Run Time Error", MB_ICONERROR);
				return 0;
			}
			else
			{ 
				strMsg.Format("%s",msg.msg);
				m_listMsg.InsertString(0, strMsg);
			}
			//Send Message To All Clients
			for (nIdx=0; nIdx < m_sockClientArray.GetSize(); nIdx++)
			{
				SOCKET sockClient = (SOCKET)m_sockClientArray.ElementAt(nIdx);
				if(send(sockClient,(char *)&msg,sizeof(msg),0) == SOCKET_ERROR)
				{
					MessageBox("Error Sending Client Message!", "Run Time Error", MB_ICONERROR);
					return 0;
				}
			}
			break;

		case FD_CLOSE:
			//Release Socket
			for (nIdx=0; nIdx < m_sockClientArray.GetSize(); nIdx++)
			{
				SOCKET sockClient = (SOCKET)m_sockClientArray.ElementAt(nIdx);
				if(sockClient == (SOCKET)wParam)
				{
					m_sockClientArray.RemoveAt(nIdx);
				}
			}
			closesocket((SOCKET)wParam);
			break;
	}

	return 0L;
}

void CMyQQDlg::CloseClientList()
{
	//Release All Sockets In The Client Socket List
	for (int nIdx=0; nIdx < m_sockClientArray.GetSize(); nIdx++)
	{
		SOCKET sockClient = (SOCKET)m_sockClientArray.ElementAt(nIdx);
		m_sockClientArray.RemoveAt(nIdx);
		closesocket(sockClient);
	}
}

BOOL CMyQQDlg::DestroyWindow()
{
	// TODO: Add your specialized code here and/or call the base class
	CloseClientList();
	closesocket(m_sockServer);
	WSACleanup();

	return CDialog::DestroyWindow();
}