clienthdlg.cpp

这是一个网络编程的小型例子

// clientHDlg.cpp : implementation file
//

#include "stdafx.h"
#include "clientH.h"
#include "clientHDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
SOCKET sockclient;
sockaddr_in sockaddrclient;

UINT threadRecvSend(LPVOID lpvoid);
UINT threadSendData(LPVOID lpvoid);

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()

/////////////////////////////////////////////////////////////////////////////
// CClientHDlg dialog

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

void CClientHDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CClientHDlg)
	DDX_Control(pDX, IDC_EDIT4, m_msgsend);
	DDX_Control(pDX, IDC_messageList, m_msglist);
	DDX_Control(pDX, IDC_BtnConnect, m_btnconnect);
	DDX_Control(pDX, IDC_EdtStatus, m_state);
	DDX_Control(pDX, IDC_StateList, m_statelist);
	DDX_Control(pDX, IDC_EdtPort, m_port);
	DDX_Control(pDX, IDC_EdtIP, m_ip);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CClientHDlg, CDialog)
	//{{AFX_MSG_MAP(CClientHDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BtnConnect, OnBtnConnect)
	ON_BN_CLICKED(IDC_BtnSend, OnBtnSend)
	ON_BN_CLICKED(IDC_DisConnect, OnDisConnect)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CClientHDlg message handlers

BOOL CClientHDlg::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
	//版本检查
	WSADATA wsa;
	if(WSAStartup(0x102,&wsa))
	{
		AfxMessageBox("套接字初始化错误!",NULL,MB_OK|MB_ICONSTOP);
		WSACleanup();
		return FALSE;
	}
	if(LOBYTE(wsa.wVersion)!=2 || HIBYTE(wsa.wVersion)!=1)
	{
		AfxMessageBox("版本匹配错误!",NULL,MB_OK||MB_ICONSTOP);
		WSACleanup();
		return FALSE;
	}
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CClientHDlg::OnBtnConnect() 
{
	// TODO: Add your control notification handler code here
	//获取IP地址
	CString ipaddress;
	m_ip.GetWindowText(ipaddress);
	sockaddrclient.sin_addr.s_addr=inet_addr(ipaddress);
	sockaddrclient.sin_family=AF_INET;
	//获取端口
	CString port;
	m_port.GetWindowText(port);
	sockaddrclient.sin_port=atoi(port);//htons(5000);
	//创建socket
	sockclient=socket(AF_INET,SOCK_STREAM,0);	
	if(sockclient==INVALID_SOCKET)
	{
		m_statelist.AddString("创建socket失败!");
		return;
	}
	int constate=connect(sockclient,(sockaddr*)&sockaddrclient,sizeof(sockaddrclient));
	if(constate!=0)
	{
		m_statelist.AddString("连接服务器失败!");
		return ;
	}
	else
		m_statelist.AddString("连接服务器成功!");
	m_btnconnect.EnableWindow(false);
	//启动线程
	AfxBeginThread(threadRecvSend,0);
}

UINT threadRecvSend(LPVOID lpvoid)
{
	//连接到服务器
	CClientHDlg *dlg=(CClientHDlg*)AfxGetApp()->GetMainWnd();
	//int constate=connect(sockclient,(sockaddr*)&sockaddrclient,sizeof(sockaddrclient));

	
	dlg->SetForegroundWindow();
	//定义缓冲区
	char buff[100];
	//循环获得数据
	while(true)
	{
		//调用recv函数接收数据
		SOCKET s=recv(sockclient,buff,100,0);
		if(s==INVALID_SOCKET) break;
	    dlg->SetForegroundWindow();
		dlg->m_msglist.AddString(buff);
	}
	return 0;
}

void CClientHDlg::OnBtnSend() 
{
	// TODO: Add your control notification handler code here
	//发送断开命令
	AfxBeginThread(threadSendData,0);
	//closesocket(sockclient);
}

void CClientHDlg::OnDisConnect() 
{
	// TODO: Add your control notification handler code here
	::closesocket(sockclient);
	this->m_btnconnect.EnableWindow(true);
}
UINT threadSendData(LPVOID lpvoid)
{
	CString msg1;
	CClientHDlg *dlg=(CClientHDlg*)AfxGetApp()->GetMainWnd();
	dlg->m_msgsend.GetWindowText(msg1);

	send(sockclient,msg1,100,0);
	return 0;
}