chatroomclientdlg.cpp

VC.net 的一些有用的技巧

// ChatRoomClientDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "ChatRoomClient.h"
#include "ChatRoomClientDlg.h"
#include "ConnectDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// 对话框数据
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CChatRoomClientDlg 对话框



CChatRoomClientDlg::CChatRoomClientDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CChatRoomClientDlg::IDD, pParent)
	, m_strClientInfo(_T(""))
	, m_strName(_T(""))
	, m_uintPortAddress()
	, m_strServerAddress(_T(""))
	, m_pSocket(NULL)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CChatRoomClientDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_LIST_CHATINFO, m_ctrlChatInfo);
	DDX_Text(pDX,IDC_EDIT_CLIENTINFO,m_strClientInfo);
	DDX_Text(pDX,IDC_STATIC_NAME,m_strName);
	DDX_Control(pDX, IDC_BUTTON_CONNECT, m_ctrlConnect);
	DDX_Control(pDX, IDC_BUTTON_DISCONNECT, m_ctrlDisconnect);
}

BEGIN_MESSAGE_MAP(CChatRoomClientDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON_CONNECT, OnConnect)
	ON_BN_CLICKED(IDC_BUTTON_DISCONNECT, OnDisconnect)
	ON_BN_CLICKED(IDCANCEL, OnCancel)
	ON_BN_CLICKED(IDC_BUTTON_SENDINFO, OnSendinfo)
END_MESSAGE_MAP()


// CChatRoomClientDlg 消息处理程序

BOOL CChatRoomClientDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// 将\“关于...\”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	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);
		}
	}

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO：在此添加额外的初始化代码
	
	return TRUE;  // 除非设置了控件的焦点，否则返回 TRUE
}

void CChatRoomClientDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CChatRoomClientDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作矩形中居中
		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;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标显示。
HCURSOR CChatRoomClientDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CChatRoomClientDlg::OnConnect()
{
	// TODO: 在此添加控件通知处理程序代码
	CConnectDlg dlg;
	if(dlg.DoModal()==IDOK)
	{
		m_strServerAddress=dlg.m_strServerAddress;
		m_uintPortAddress=dlg.m_uintPortAddress;
		m_strName=dlg.m_strName;
		UpdateData(FALSE);
		m_pSocket=new CClientChatSocket();

		if(!(ConnectServer(m_pSocket)))
		{
			m_pSocket=NULL;
			return;
		}
		else
		{
			MessageBox("Socket连接成功！","客户程序");
			m_ctrlConnect.EnableWindow(FALSE);
			m_ctrlDisconnect.EnableWindow(TRUE);
		}
	}
}

void CChatRoomClientDlg::OnDisconnect()
{
	// TODO: 在此添加控件通知处理程序代码
	if(m_pSocket)
	{
		delete m_pSocket;
		m_pSocket=NULL;
		MessageBox("Socket连接已断开！","客户程序");
	}
	else
		MessageBox("已断开服务器！","客户程序");
}

void CChatRoomClientDlg::OnCancel()
{
	// TODO: 在此添加控件通知处理程序代码
	if(m_pSocket)
		delete m_pSocket;
	CDialog::OnCancel();
}

void CChatRoomClientDlg::OnSendinfo()
{
	// TODO: 在此添加控件通知处理程序代码
	if(m_pSocket)
	{
		UpdateData(TRUE);
		m_strClientInfo=m_strName+"："+m_strClientInfo;
		m_pSocket->Send(LPCTSTR(m_strClientInfo),m_strClientInfo.GetLength());
		m_strClientInfo.Empty();
		UpdateData(FALSE);
	}
	else 
		MessageBox("未建立Socket连接,无法传递消息!","客户程序");
}

BOOL CChatRoomClientDlg::ConnectServer(CClientChatSocket* pSocket)
{
	if(!(pSocket->Create()))
	{
		delete pSocket;
		pSocket=NULL;
		MessageBox("Socket创建失败！","客户程序");
		return FALSE;
	}
	if(!pSocket->Connect(m_strServerAddress,m_uintPortAddress))
	{
		delete pSocket;
		pSocket=NULL;
		MessageBox("服务器连接失败！","客户程序");
		return FALSE;
	}
	return TRUE;
}

void CChatRoomClientDlg::GetSocketMsg(CClientChatSocket* pSocket)
{
	char buff[1000];
	int count;
	count=pSocket->Receive(buff,1000);
	buff[count]=0;
	m_ctrlChatInfo.AddString(buff);
}