www.pudn.com > 网络聊天：VC winsock-tcp.rar > ChatSvrDlg.cpp, change:2002-06-24,size:5586b

// ChatSvrDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "ChatSvr.h" 
#include "ChatSvrDlg.h" 
#include "ClientSocket.h" 
#include "ListeningSocket.h" 
#include "InitDlg.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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CChatSvrDlg dialog 
 
CChatSvrDlg::CChatSvrDlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CChatSvrDlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CChatSvrDlg) 
		// 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); 
 
	m_pSocket = NULL; 
} 
 
void CChatSvrDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CChatSvrDlg) 
	DDX_Control(pDX, IDC_LIST_MSGS, m_ctrlMsgs); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CChatSvrDlg, CDialog) 
	//{{AFX_MSG_MAP(CChatSvrDlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_WM_DESTROY() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CChatSvrDlg message handlers 
 
BOOL CChatSvrDlg::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 
 
	//弹出初始话对话框 
	CInitDlg dlg; 
	if (dlg.DoModal() == IDOK) 
	{ 
		//创建监听套节字 
		m_pSocket = new CListeningSocket(this); 
		if (m_pSocket->Create(dlg.m_nPort+700)) 
		{ 
			if (m_pSocket->Listen()) 
				return TRUE; 
		} 
		else 
			return FALSE; 
	} 
	else 
		return FALSE; 
 
	return TRUE;  // return TRUE  unless you set the focus to a control 
} 
 
void CChatSvrDlg::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 CChatSvrDlg::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 CChatSvrDlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
//更新所有客户端 
void CChatSvrDlg::UpdateClients(char* buffer,int nBufferSize) 
{ 
	for(POSITION pos = m_connectionList.GetHeadPosition(); pos != NULL;) 
	{ 
		//将新信息发送给每个客户端 
		CClientSocket* pSocket = (CClientSocket*)m_connectionList.GetNext(pos); 
		if (buffer != NULL) 
			pSocket->Send(buffer,nBufferSize,0); 
	} 
} 
 
//处理客户端的连接信息 
void CChatSvrDlg::ProcessPendingAccept()  
{ 
	//生成一个新的套节字与客户端通讯 
	CClientSocket* pSocket = new CClientSocket(this); 
 
	if (m_pSocket->Accept(*pSocket)) 
	{ 
		//将该套节字保存起来 
		m_connectionList.AddTail(pSocket); 
	} 
	else 
		delete pSocket; 
} 
 
//接收数据 
void CChatSvrDlg::ProcessPendingRead(CClientSocket* pSocket) 
{ 
	//定义缓冲区 
	char buffer[BUFFER_SIZE]; 
 
	//接收数据 
	int nReceived = pSocket->Receive(buffer,BUFFER_SIZE,0); 
	buffer[nReceived] = 0; 
 
	//将数据在列表框中显示出来 
	m_ctrlMsgs.AddString(buffer); 
 
	//将数据发送给每个客户 
	UpdateClients(buffer,nReceived); 
} 
 
void CChatSvrDlg::OnDestroy()  
{ 
	delete m_pSocket; 
	CDialog::OnDestroy();	 
}