www.pudn.com > UdpMulticast.rar > UdpMulticastDlg.cpp

// UdpMulticastDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "UdpMulticast.h" 
#include "UdpMulticastDlg.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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CUdpMulticastDlg dialog 
 
CUdpMulticastDlg::CUdpMulticastDlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CUdpMulticastDlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CUdpMulticastDlg) 
	m_strMsg = _T(""); 
	m_strGAddr = _T(""); 
	m_sPort = 0; 
	//}}AFX_DATA_INIT 
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 
} 
 
void CUdpMulticastDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CUdpMulticastDlg) 
	DDX_Control(pDX, IDC_EDT_MSG, m_edtMsg); 
	DDX_Control(pDX, IDC_LSB_MSG, m_lsbMsg); 
	DDX_Text(pDX, IDC_EDT_MSG, m_strMsg); 
	DDX_Text(pDX, IDC_EDT_GROUP, m_strGAddr); 
	DDX_Text(pDX, IDC_EDT_PORT, m_sPort); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CUdpMulticastDlg, CDialog) 
	//{{AFX_MSG_MAP(CUdpMulticastDlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_BTN_JION, OnBtnJion) 
	ON_BN_CLICKED(IDC_BTN_LEAVE, OnBtnLeave) 
	ON_BN_CLICKED(IDC_BTN_SEND, OnBtnSend) 
	ON_WM_DESTROY() 
	//}}AFX_MSG_MAP 
	ON_MESSAGE(WM_MULTIPOINTEVENT, OnReceive) 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CUdpMulticastDlg message handlers 
 
BOOL CUdpMulticastDlg::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 
	if(m_mcast.InitInstance() == TRUE) 
	{ 
		m_strGAddr = "234.5.6.7"; 
		m_sPort = 9999; 
		UpdateData(FALSE); 
	} 
	 
	return TRUE;  // return TRUE  unless you set the focus to a control 
} 
 
void CUdpMulticastDlg::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 CUdpMulticastDlg::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 CUdpMulticastDlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
void CUdpMulticastDlg::OnBtnJion()  
{ 
	UpdateData(TRUE); 
	if(m_mcast.CreateInstance((LPCTSTR)m_strGAddr, m_sPort, m_hWnd) == FALSE) 
	{ 
		MessageBox("ERROR : CreateInstance ."); 
		m_mcast.Close(); 
	} 
} 
 
void CUdpMulticastDlg::OnBtnLeave()  
{ 
	m_mcast.Close(); 
} 
 
void CUdpMulticastDlg::OnBtnSend()  
{ 
	if(m_mcast.IsConnected() == FALSE) 
	{ 
		TRACE("ERROR : OnBtnSend - m_mcast.IsConnected() == FALSE .\n"); 
		int index = m_lsbMsg.InsertString(m_lsbMsg.GetCount(), "[连接未成功]"); 
		if(index != LB_ERR) 
		{ 
			m_lsbMsg.SetCurSel(index); 
			if(index == 50) 
				m_lsbMsg.DeleteString(0); 
		} 
		return; 
	} 
 
	UpdateData(TRUE); 
	if(m_strMsg == "") 
	{ 
		m_edtMsg.SetWindowText("[不能发空消息]"); 
		return; 
	} 
 
	if(m_mcast.SendData((LPCTSTR)m_strMsg, m_strMsg.GetLength()) == SOCKET_ERROR) 
	{ 
		m_mcast.Close(); 
		return; 
	} 
} 
 
LRESULT CUdpMulticastDlg::OnReceive(WPARAM wParam, LPARAM lParam) 
{ 
	SOCKET sockfd = (SOCKET)wParam; 
	if(WSAGETSELECTERROR(lParam) != 0) 
	{ 
		TRACE("ERROR : Recv - %d .\n", WSAGetLastError()); 
		m_mcast.Close(); 
		return 0; 
	} 
 
	sockaddr_in from; 
	int ret, salen = sizeof(from); 
	char buff[BUF_SIZE + 1]; 
	CString strMsg; 
	switch(WSAGETSELECTEVENT(lParam)) 
	{ 
	case FD_WRITE: 
		TRACE("Now can sending data now!\n"); 
		break; 
	case FD_READ: 
		ret = m_mcast.RecvData(buff, BUF_SIZE, (sockaddr *) & from, & salen); 
		if(ret == SOCKET_ERROR) 
			m_mcast.Close(); 
		else if(ret != 0) 
		{ 
			buff[ret] = '\0'; 
			strMsg.Format("[%s] FROM [%s]-[%d]", buff, inet_ntoa(from.sin_addr), from.sin_port); 
			int index = m_lsbMsg.InsertString(m_lsbMsg.GetCount(), (LPCTSTR)strMsg); 
			if(index != LB_ERR) 
			{ 
				m_lsbMsg.SetCurSel(index); 
				if(index == 50) 
					m_lsbMsg.DeleteString(0); 
			} 
		} 
		break; 
	case FD_QOS: 
		break; 
	case FD_GROUP_QOS: 
		break; 
	default: 
		break; 
	} 
	return 0; 
} 
 
void CUdpMulticastDlg::OnDestroy()  
{ 
	m_mcast.UninInstance(); 
	CDialog::OnDestroy(); 
}