winsockclientdlg.cpp

Visual C++高级编程及其项目应用开发(含源代码)

// WinSockClientDlg.cpp : implementation file
//

#include "stdafx.h"
#include "WinSockClient.h"
#include "WinSockClientDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CWinSockClientDlg dialog

CWinSockClientDlg::CWinSockClientDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWinSockClientDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWinSockClientDlg)
	m_strData = _T("");
	m_strChat = _T("");
	m_strName = _T("");
	m_iPort = 1001;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CWinSockClientDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWinSockClientDlg)
	DDX_Control(pDX, IDC_ServPort, m_ctlPort);
	DDX_Control(pDX, IDC_ServName, m_ctlName);
	DDX_Control(pDX, IDC_Send, m_btnSend);
	DDX_Control(pDX, IDC_Exit, m_btnExit);
	DDX_Control(pDX, IDC_DisConnect, m_btnDisConn);
	DDX_Control(pDX, IDC_Connect, m_btnConn);
	DDX_Control(pDX, IDC_Clear, m_btnClear);
	DDX_Control(pDX, IDC_Chat, m_lstChat);
	DDX_Control(pDX, IDC_Data, m_ctlData);
	DDX_Text(pDX, IDC_Data, m_strData);
	DDX_LBString(pDX, IDC_Chat, m_strChat);
	DDX_Text(pDX, IDC_ServName, m_strName);
	DDX_Text(pDX, IDC_ServPort, m_iPort);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWinSockClientDlg, CDialog)
	//{{AFX_MSG_MAP(CWinSockClientDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CLOSE()
	ON_BN_CLICKED(IDC_Exit, OnExit)
	ON_BN_CLICKED(IDC_Connect, OnClientConnect)
	ON_BN_CLICKED(IDC_Send, OnMsgSend)
	ON_BN_CLICKED(IDC_DisConnect, OnDisConnect)
	ON_BN_CLICKED(IDC_Clear, OnClear)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWinSockClientDlg message handlers

BOOL CWinSockClientDlg::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
	
	//初始的时候，一些控件是不可用的：
	m_ctlData.EnableWindow(false);
	m_btnSend.EnableWindow(false);
	m_btnDisConn.EnableWindow(false);
	
	SetWindowText("客户端程序");

	m_cSocket.SetParent(this);

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

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

void CWinSockClientDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	
	//CDialog::OnCancel();
}

void CWinSockClientDlg::OnOK() 
{
	// TODO: Add extra validation here
	
	//CDialog::OnOK();
}

void CWinSockClientDlg::OnClose()
{
	// TODO: Add your message handler code here and/or call default
	OnDisConnect();
	CDialog::OnCancel();
}

void CWinSockClientDlg::OnExit() 
{
	// TODO: Add your control notification handler code here
	OnDisConnect();
	CDialog::OnCancel();
}

//与Socket类相关的事件函数
void CWinSockClientDlg::OnSend()
{
}

void CWinSockClientDlg::OnConnect()
{
	//连接成功后，一些控件可用：
	m_ctlData.EnableWindow(true);
	m_btnSend.EnableWindow(true);
	m_btnDisConn.EnableWindow(true);
	//一些控件不可用
	m_btnConn.EnableWindow(false);
}

void CWinSockClientDlg::OnSocketClose()
{
	m_cSocket.Close();
	//服务器断开后，客户端控件作出相应的变化
	m_ctlData.EnableWindow(false);
	m_btnSend.EnableWindow(false);
	m_btnDisConn.EnableWindow(false);
	m_btnConn.EnableWindow(true);
}

void CWinSockClientDlg::OnReceive()
{
	char *pBuf = new char[1025];
	int iBufSize = 1024;
	int iRecvd;
	CString strRecvd;

	// 接收信息，并返回接收到的字节数
	iRecvd = m_cSocket.Receive(pBuf, iBufSize);
	// 判断是否有错误发生
	if (iRecvd == SOCKET_ERROR)
	{
		delete pBuf;
		return;
	}
	else
	{
		// 利用NULL来截去接收缓存区中多余的字符
		pBuf[iRecvd] = NULL;
		// 将接收到的有用的信息赋值给CString变量
		strRecvd = pBuf;
		// 将接收到的信息加入到列表框中去
		//m_lstChat.AddString(strRecvd);
		m_lstChat.SendMessage(LB_INSERTSTRING, -1, (LPARAM)pBuf);
		//将对应的变量的变化显示在控件上
		UpdateData(FALSE);
		delete pBuf;
	}
}

void CWinSockClientDlg::OnClientConnect()
{
	// TODO: Add your control notification handler code here
	int iConn;
	UpdateData(true);
	if (""==m_strName)
	{
		MessageBox("服务器名不能为空！");
		m_ctlName.SetFocus();
		return;
	}
	m_cSocket.Create();
	iConn = m_cSocket.Connect(m_strName, m_iPort);
	//if (iConn==0)
	//{
	//	m_cSocket->Close();
	//	delete m_cSocket;
	//}
}

void CWinSockClientDlg::OnMsgSend()
{
	// TODO: Add your control notification handler code here
	int iLen;//发送字符串的长度
	int iSend;//发送函数返回的结果

	UpdateData(true);
	if(""==m_strData)
	{
		MessageBox("不能发送空字符串！");
		m_ctlData.SetFocus();
		return;
	}
	iLen = m_strData.GetLength();//取得字符串的长度
	iSend = m_cSocket.Send(LPCTSTR(m_strData), iLen);
	//检查是否出错
	if(SOCKET_ERROR==iSend)
	{
		MessageBox("发送信息失败！");
		return;
	}
}

void CWinSockClientDlg::OnDisConnect() 
{
	// TODO: Add your control notification handler code here
	m_cSocket.Close(); 

	//断开连接后，一些控件是不可用的：
	m_ctlData.EnableWindow(false);
	m_btnSend.EnableWindow(false);
	m_btnDisConn.EnableWindow(false);
	//一些控件可用
	m_btnConn.EnableWindow(true);
}

void CWinSockClientDlg::OnClear()
{
	// TODO: Add your control notification handler code here
	//清空列表框内容
	m_lstChat.SendMessage(LB_RESETCONTENT,0,0);
}