chatdlg.cpp

聊天室用WINSOCKET来做的聊天室实现B/S的聊天获取IP地址

// chatDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "chat.h"
#include "chatDlg.h"
#include ".\chatdlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

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

// 对话框数据
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

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

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

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CchatDlg 对话框



CchatDlg::CchatDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CchatDlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CchatDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CchatDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_recvdata,Onrecv)
	ON_BN_CLICKED(IDC_BTN_SEND, OnBnClickedBtnSend)
END_MESSAGE_MAP()


// CchatDlg 消息处理程序

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

	// 将\“关于...\”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	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);
		}
	}

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO: 在此添加额外的初始化代码
	Initsock();
	recvparam *precvparam=new recvparam;
	precvparam->sock=m_socket;
	precvparam->hwnd=m_hWnd;
	HANDLE hthread1=CreateThread(NULL,0,recvthread,(LPVOID)precvparam,0,NULL);
	CloseHandle(hthread1);

	return TRUE;  // 除非设置了控件的焦点，否则返回 TRUE
}

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

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CchatDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作矩形中居中
		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;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标显示。
HCURSOR CchatDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

bool CchatDlg::Initsock(void)
{
    m_socket=socket(AF_INET,SOCK_DGRAM,0);
	if(INVALID_SOCKET==m_socket)
	{
	  MessageBox("create socket is failed!");
	  return false;
	}
	SOCKADDR_IN sockaddr;
	sockaddr.sin_family=AF_INET;
	sockaddr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
	sockaddr.sin_port=htons(6000);
	int ret;
	ret=bind(m_socket,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR));
	if(SOCKET_ERROR==ret)
	{
		MessageBox("bind is failed!");
		return false;
	}
	return true;
}

DWORD WINAPI CchatDlg::recvthread(LPVOID lParam)
{
	SOCKET sock=((recvparam*)lParam)->sock;
	HWND hwnd=((recvparam*)lParam)->hwnd;

    SOCKADDR_IN sockaddr;
	int len=sizeof(SOCKADDR);
	char recvbuf[200];
	char tempbuf[200];
	int ret;
	while(true)
	{
		ret=recvfrom(sock,recvbuf,200,0,(SOCKADDR*)&sockaddr,&len);
        if(SOCKET_ERROR==ret||0==ret)
		 break;
		sprintf(tempbuf,"%s说:%s",inet_ntoa(sockaddr.sin_addr),recvbuf);
		::PostMessage(hwnd,WM_recvdata,0,(LPARAM)tempbuf);
	}
	return 0;
}
LRESULT CchatDlg::Onrecv(WPARAM wParam,LPARAM lParam)
{
	CString str=(char*)lParam;
	CString tempstr;
	GetDlgItemText(IDC_EDIT_RECV,tempstr);
    str+="\r\n";
	str+=tempstr;
	SetDlgItemText(IDC_EDIT_RECV,str);
	return 0;
}

void CchatDlg::OnBnClickedBtnSend()
{
	DWORD dwIP;
	((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(dwIP);

	SOCKADDR_IN sockaddr;
	sockaddr.sin_family=AF_INET;
	sockaddr.sin_addr.S_un.S_addr=htonl(dwIP);
	sockaddr.sin_port=htons(6000);

	CString str;
	GetDlgItemText(IDC_EDIT_SEND,str);
	sendto(m_socket,str,str.GetLength()+1,0,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR));
	SetDlgItemText(IDC_EDIT_SEND,"");
	// TODO: 在此添加控件通知处理程序代码
}