chatdlg.cpp

软件课程设计（1） 是一些非常经典的程序

// chatDlg.cpp : implementation file
//

#include "stdafx.h"
#include "chat.h"
#include "chatDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CChatDlg dialog

CChatDlg::CChatDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CChatDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CChatDlg)
		// 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 CChatDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CChatDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CChatDlg, CDialog)
	//{{AFX_MSG_MAP(CChatDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTT_SEND, OnBtnSend)
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_RECVDATA,OnRecvData)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CChatDlg message handlers

BOOL CChatDlg::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
	
	InitSocket();
    RECVPARAM *pRecvParam=new RECVPARAM;
    pRecvParam->sock=m_socket;
	pRecvParam->hwnd=m_hWnd;
	HANDLE hThread=CreateThread(NULL,0,RecvProc,(LPVOID)pRecvParam,0,NULL);
	CloseHandle(hThread);
     
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

BOOL CChatDlg::InitSocket()
{
	m_socket=socket(AF_INET,SOCK_DGRAM,0);
   if (INVALID_SOCKET==m_socket)
   {
	   MessageBox("套接字创建失败！");
	   return FALSE;
   }
   SOCKADDR_IN addrSock;
   addrSock.sin_family=AF_INET;
   addrSock.sin_port=htons(6000);
   addrSock.sin_addr.S_un.S_addr=htonl(INADDR_ANY);

   int retval;
   retval=bind(m_socket,(SOCKADDR*)&addrSock,sizeof(SOCKADDR));
   if(SOCKET_ERROR==retval)
   {
	   closesocket(m_socket);
	   MessageBox("bind failed!");
       return FALSE;   
   }
    return TRUE;


}

DWORD WINAPI CChatDlg::RecvProc(LPVOID lpParameter)
{  
   SOCKET sock=((RECVPARAM*)lpParameter)->sock;
   HWND hwnd=((RECVPARAM*)lpParameter)->hwnd;

   SOCKADDR_IN addrFrom;
   int len=sizeof(SOCKADDR);

   char recvBuf[200];
   char tempBuf[300];

   int retval;
   while(TRUE)
   {
       retval=recvfrom(sock,recvBuf,200,0,(SOCKADDR*)&addrFrom,&len);
	   if(SOCKET_ERROR==retval)
		   break;
	   sprintf(tempBuf,"%s说: %s",inet_ntoa(addrFrom.sin_addr),recvBuf);
	   ::PostMessage(hwnd,WM_RECVDATA,0,(LPARAM)tempBuf);

   }

   return 0;
}


void CChatDlg::OnRecvData(WPARAM wParam,LPARAM lParam)
{
	CString str=(char*)lParam;
	CString strTemp;
	GetDlgItemText(IDC_EDIT_RECV,strTemp);
	str+="\r\n";
	str+=strTemp;
	SetDlgItemText(IDC_EDIT_RECV,str);
}

void CChatDlg::OnBtnSend() 
{
	// TODO: Add your control notification handler code here
     DWORD dwIP;
     ((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(dwIP);
	 SOCKADDR_IN addrTo;
   addrTo.sin_family=AF_INET;
   addrTo.sin_port=htons(6000);
   addrTo.sin_addr.S_un.S_addr=htonl(dwIP);

   CString strSend;
   GetDlgItemText(IDC_EDIT_SEND,strSend);
   sendto(m_socket,strSend,strSend.GetLength()+1,0,(SOCKADDR*)&addrTo,sizeof(SOCKADDR));
   SetDlgItemText(IDC_EDIT_SEND,"");

	
}