lanchatdlg.cpp

Visual C++ 通信编程工程实例精解(光盘资料)第3章

// LANChatDlg.cpp : implementation file
//

#include "stdafx.h"
#include "LANChat.h"
#include "LANChatDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CLANChatDlg dialog

CLANChatDlg::CLANChatDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CLANChatDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLANChatDlg)
	m_uPort = 0;
	m_ShowMsg = _T("");
	m_InputMsg = _T("");
	m_UserName = _T("");
	m_Type = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CLANChatDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLANChatDlg)
	DDX_Control(pDX, IDC_IPADDRESS, m_IP);
	DDX_Text(pDX, IDC_PORT, m_uPort);
	DDX_Text(pDX, IDC_SHOWMSG, m_ShowMsg);
	DDX_Text(pDX, IDC_INPUTMSG, m_InputMsg);
	DDX_Text(pDX, IDC_USERNAME, m_UserName);
	DDX_Radio(pDX, IDC_SERVER, m_Type);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CLANChatDlg, CDialog)
	//{{AFX_MSG_MAP(CLANChatDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SERVER, OnServer)
	ON_BN_CLICKED(IDC_CLIENT, OnClient)
	ON_EN_UPDATE(IDC_INPUTMSG, OnInputMsg)
	ON_BN_CLICKED(IDC_START_LINK, OnStartLink)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLANChatDlg message handlers

BOOL CLANChatDlg::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
	m_IP.EnableWindow(FALSE);
	GetDlgItem(IDC_USERNAME)->EnableWindow(FALSE);
	BYTE f0 = 127;
	BYTE f1 = 0;
	BYTE f2 = 0;
	BYTE f3 = 1;
	((CIPAddressCtrl *)(GetDlgItem(IDC_IPADDRESS)))->SetAddress(f0,f1,f2,f3);
	m_uPort=6000;
	UpdateData(false);
	m_bInit=false;
	m_bClient=false;

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

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

void CLANChatDlg::OnServer() 
{
	// TODO: Add your control notification handler code here
	m_Type = 0;
	m_IP.EnableWindow(FALSE);
	GetDlgItem(IDC_USERNAME)->EnableWindow(FALSE);
	GetDlgItem(IDC_START_LINK)->SetWindowText("启动服务器");
	(AfxGetMainWnd())->SetWindowText("服务器");	
}

void CLANChatDlg::OnClient() 
{
	// TODO: Add your control notification handler code here
	m_Type = 1;
	m_IP.EnableWindow(TRUE);
	GetDlgItem(IDC_USERNAME)->EnableWindow(TRUE);
	GetDlgItem(IDC_START_LINK)->SetWindowText("连接服务器");
	(AfxGetMainWnd())->SetWindowText("客户机");	
}

void CLANChatDlg::OnInputMsg() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function to send the EM_SETEVENTMASK message to the control
	// with the ENM_UPDATE flag ORed into the lParam mask.
	
	// TODO: Add your control notification handler code here
	if(!m_bInit)
	{
		AfxMessageBox("没有连接到服务器");
		return;
	}
	CString in;
	CMessg msg;
	GetDlgItemText(IDC_INPUTMSG,in);
	if(in.GetLength()<1)
	{
		return;
	}
	if(in.GetAt(in.GetLength()-1)=='\n')
	{
		in.TrimRight(" ");
		SetDlgItemText(IDC_INPUTMSG,"");
		if(in.GetLength()>2)
		{
			if (!m_Type)
				m_UserName="管理员";
			m_sMsgList+=m_UserName+":"+in;
			/*m_sMsgList+=in;*/
			
			SetDlgItemText(IDC_SHOWMSG,m_sMsgList);
			int m_iLineCurrentPos=((CEdit *)(GetDlgItem(IDC_SHOWMSG)))->GetLineCount();
			((CEdit *)(GetDlgItem(IDC_SHOWMSG)))->LineScroll(m_iLineCurrentPos);

			if (!m_Type)
				m_UserName="管理员";
			msg.m_strText=m_UserName+":"+in;
			//msg.m_strText=in;
			//msg.m_strText=m_sMsgList;
			if(!m_bClient)
			{
				POSITION pos;
				for(pos=m_connectionList.GetHeadPosition();pos!=NULL;)
				{
					CChatClient * t= (CChatClient *)m_connectionList.GetNext(pos);
					t->SendMessage(&msg);
				}
			}
			else
			{
				m_ChatClient.SendMessage(&msg);
			}
		}
	}	
}

void CLANChatDlg::OnStartLink() 
{
	// TODO: Add your control notification handler code here
	UpdateData();


	if(	!m_Type )
	{
		if(!m_bInit)
		{
			m_bClient=false;
			m_bInit=true;
			if(m_pListenSocket.Init(GetDlgItemInt(IDC_PORT),this)==FALSE)
			{
				m_bInit=false;
				return;
			}
		}
	}
	else
	{
		if (m_UserName=="")
		{
			AfxMessageBox("请输入用户名");
			GetDlgItem(IDC_USERNAME)->SetFocus();
			return;
		}

		

		if(!m_bInit)
		{
			BYTE f0,f1,f2,f3;
			CString name;
			((CIPAddressCtrl *)(GetDlgItem(IDC_IPADDRESS)))->GetAddress(f0,f1,f2,f3);
			CString ip;
			ip.Format("%d.%d.%d.%d",f0,f1,f2,f3);
			m_bClient=true;
			m_ChatClient.Create();
			if(m_ChatClient.Connect(ip,GetDlgItemInt(IDC_PORT)))
			{
				m_ChatClient.Init(this);
				SetDlgItemText(IDC_SHOWMSG,"客户端连接成功");
				m_bInit=true;

				CString Caption;
				Caption="客户机 当前用户:"+m_UserName;
				(AfxGetMainWnd())->SetWindowText(Caption);

				
			}
			else
			{
				m_ChatClient.Close();
				AfxMessageBox("客户端连接失败");
				m_bInit=false;
			}
		}	
	}	
	
}

void CLANChatDlg::CloseSessionSocket()
{
	if(!m_bClient)
	{
		for(POSITION pos=m_connectionList.GetHeadPosition();pos!=NULL;)
		{
			POSITION t_pos=pos;
			CChatClient * t = (CChatClient*)m_connectionList.GetNext(pos);
			if(t->m_bClose==true)
			{
				m_connectionList.RemoveAt(t_pos);
			}
		}
	}
}

void CLANChatDlg::ProcessPendingAccept()
{
	CChatClient* pSocket = new CChatClient();

	if (m_pListenSocket.Accept(*pSocket))
	{
		CMessg msg;
		//msg.m_strText="一个游客进入聊天室了";
		//m_ShowMsg+="一个游客进入聊天室了\n";
		POSITION pos;
		for(pos=m_connectionList.GetHeadPosition();pos!=NULL;)
		{
			CChatClient * t= (CChatClient *)m_connectionList.GetNext(pos);
			t->SendMessage(&msg);
		}
		pSocket->Init(this);
		m_connectionList.AddTail(pSocket);
	}
	else
		delete pSocket;
}

void CLANChatDlg::OnStop() 
{
	// TODO: Add your control notification handler code here
	if(m_bClient)
	{
		m_ChatClient.Close();
	}
	else
	{
		m_pListenSocket.Close();
		m_connectionList.RemoveAll();
	}
	m_bInit=false;
	m_sMsgList="";
	m_UserName="";
	SetDlgItemText(IDC_INPUTMSG,"");
	SetDlgItemText(IDC_SHOWMSG,"");
	UpdateData(false);


	
}