chatdlg.cpp

聊天程序实现点对点之间的聊天以及文件传输

// 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
struct RECVPARAM
{
	SOCKET socket;
	HWND hWnd;
};
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_BUTTON1, OnButton1)
	//}}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 *recvParam = new RECVPARAM;
	recvParam->hWnd = this->m_hWnd;
	recvParam->socket = m_socket;
	HANDLE hThread = ::CreateThread(NULL,0,Thread,(LPVOID)recvParam,0,NULL);
	::CloseHandle(hThread);
	return TRUE;  // return TRUE  unless you set the focus to a control
}
void CChatDlg::OnRecvData(WPARAM wParam,LPARAM lParam)
{
	CString  str = (char*)lParam;
    CString temp;
	GetDlgItemText(IDC_EDIT_RECV,temp);
    str += "\r\n";
	str += temp;
    SetDlgItemText(IDC_EDIT_RECV,str);
}

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("创建套接字失败!");
		return false;
	}
    SOCKADDR_IN sockAddr;
	sockAddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
    sockAddr.sin_family = AF_INET;
	sockAddr.sin_port = htons(10000);
	int result;
    result=bind(m_socket,(sockaddr*)&sockAddr,sizeof(sockaddr));
    if(result == SOCKET_ERROR)
	{
		MessageBox("绑定失败!");
		closesocket(m_socket);
		return false;
	}
    return true;

}

DWORD WINAPI CChatDlg::Thread(LPVOID lpParameter)
{
	SOCKET socket = ((RECVPARAM*)(lpParameter))->socket;
	HWND hWnd = ((RECVPARAM*)(lpParameter))->hWnd;

	SOCKADDR_IN sockFrom;
	int len = sizeof(sockaddr);
    int result;
	char recvBuff[200];
	char tempBuff[200];
	while(true)
	{
		result = recvfrom(socket,recvBuff,200,0,(sockaddr*)&sockFrom,&len);
		if(SOCKET_ERROR == result)
			break;
        sprintf(tempBuff,"%s say : %s",inet_ntoa(sockFrom.sin_addr),recvBuff);
		::PostMessage(hWnd,WM_RECVDATA,0,(LPARAM)tempBuff);
	}

	return 0;
}

void CChatDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	DWORD ip;
	((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(ip);
    SOCKADDR_IN sockAddr;
    sockAddr.sin_addr.S_un.S_addr = htonl(ip);
	sockAddr.sin_family = AF_INET;
	sockAddr.sin_port = htons(10000);
	CString str;
	GetDlgItemText(IDC_EDIT2,str);
	sendto(m_socket,str,strlen(str)+1,0,(sockaddr*)&sockAddr,sizeof(sockaddr));
	SetDlgItemText(IDC_EDIT2,"");
	
}