clistdemodlg.cpp

VC++6开发指南的源代码第7章-第11章

// CListDemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CListDemo.h"
#include "CListDemoDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCListDemoDlg dialog

CCListDemoDlg::CCListDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCListDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCListDemoDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCListDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCListDemoDlg)
	DDX_Control(pDX, IDC_LIST1, m_list);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCListDemoDlg, CDialog)
	//{{AFX_MSG_MAP(CCListDemoDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADDHEAD, OnAddhead)
	ON_BN_CLICKED(IDC_ADDTAIL, OnAddtail)
	ON_BN_CLICKED(IDC_REMOVEALL, OnRemoveall)
	ON_BN_CLICKED(IDC_REMOVEHEAD, OnRemovehead)
	ON_BN_CLICKED(IDC_REMOVETAIL, OnRemovetail)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCListDemoDlg message handlers

BOOL CCListDemoDlg::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
	// 向链表集合中添加初始元素
	POSITION pos = m_strlist.AddHead(CString("the list1"));
	pos = m_strlist.InsertAfter(pos, CString("the list2"));
	pos = m_strlist.InsertAfter(pos, CString("the list3"));
	ShowList();//列表框显示链表数据

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

void CCListDemoDlg::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 CCListDemoDlg::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 CCListDemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void CCListDemoDlg::ShowList() 
{
	// TODO: Add your control notification handler code here
	CString str;
	m_list.ResetContent();//清空列表框
	if(!m_strlist.IsEmpty())//链表不为空
	{
		POSITION pos = m_strlist.GetHeadPosition();//获取链表头的位置
		for (int i=0;i<m_strlist.GetCount();i++)//遍历链表
		{
			str=m_strlist.GetNext(pos);
			m_list.AddString(str);//添加列表框数据
		}
	}
}

void CCListDemoDlg::OnAddhead() 
{
	// TODO: Add your control notification handler code here
	CString str;
	GetDlgItem(IDC_EDITADD)->GetWindowText(str);//获取输入框数据
	if(!str.IsEmpty())
	{
		m_strlist.AddHead(str);//将输入数据添加到链表头
	}
	else
	{
		AfxMessageBox("输入框为空！");
		return;
	}
	GetDlgItem(IDC_EDITADD)->SetWindowText("");//清空输入框
	ShowList();//列表框显示链表数据	
}

void CCListDemoDlg::OnAddtail() 
{
	// TODO: Add your control notification handler code here
	CString str;
	GetDlgItem(IDC_EDITADD)->GetWindowText(str);//获取输入框数据
	if(!str.IsEmpty())
	{
		m_strlist.AddTail(str);//将输入数据添加到链表尾
	}
	else
	{
		AfxMessageBox("输入框为空！");
		return;
	}
	GetDlgItem(IDC_EDITADD)->SetWindowText("");//清空输入框
	ShowList();//列表框显示链表数据	
	
}

void CCListDemoDlg::OnRemoveall() 
{
	// TODO: Add your control notification handler code here
	if(!m_strlist.IsEmpty())//链表不为空
	{
		m_strlist.RemoveAll();//删除链表所有数据
		ShowList();//列表框显示链表数据
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText("链表已经被清空");//设置输出框数据
	}
	else
	{
		AfxMessageBox("链表已经为空！");
		return;
	}
	
}

void CCListDemoDlg::OnRemovehead() 
{
	// TODO: Add your control notification handler code here
	if(!m_strlist.IsEmpty())//链表不为空
	{
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText("");//设置输出框数据
		CString str;
		str=m_strlist.GetHead();//获取链表头数据
		m_strlist.RemoveHead();//去除表头
		ShowList();//列表框显示链表数据
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText(str);//设置输出框数据
	}
	else
	{
		AfxMessageBox("链表已经为空！");
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText("链表已经被清空");//设置输出框数据
		return;
	}
}



void CCListDemoDlg::OnRemovetail() 
{
	// TODO: Add your control notification handler code here
	if(!m_strlist.IsEmpty())//链表不为空
	{
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText("");//设置输出框数据
		CString str;
		str=m_strlist.GetTail();//获取链表尾数据
		m_strlist.RemoveTail();//删除表尾
		ShowList();//列表框显示链表数据
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText(str);//设置输出框数据
	}
	else
	{
		AfxMessageBox("链表已经为空！");
		GetDlgItem(IDC_EDITREMOVE)->SetWindowText("链表已经被清空");//设置输出框数据
		return;
	}

	
}