mytreedlg.cpp

这个是我们学校用的VC++教案

// MyTreeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyTree.h"
#include "MyTreeDlg.h"
#include "InputDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMyTreeDlg dialog

CMyTreeDlg::CMyTreeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyTreeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyTreeDlg)
		// 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);
}

void CMyTreeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyTreeDlg)
	DDX_Control(pDX, IDC_TREECTL, m_TreeCtl);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyTreeDlg, CDialog)
	//{{AFX_MSG_MAP(CMyTreeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTNADD, OnButnadd)
	ON_BN_CLICKED(IDC_BUTNDEL, OnButndel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyTreeDlg message handlers

BOOL CMyTreeDlg::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
	HTREEITEM  hItemRoot,hItemClass,hItemRes,hItemFile;   // 声明项目句柄
	hItemRoot=m_TreeCtl.InsertItem("Project",TVI_ROOT);  // 插入根项目Project
	hItemClass=m_TreeCtl.InsertItem("Class",hItemRoot);  // 在根项目下面插入二级子项目
	hItemRes=m_TreeCtl.InsertItem("Resource",hItemRoot);
	hItemFile=m_TreeCtl.InsertItem("File",hItemRoot);
	m_TreeCtl.InsertItem("CMyTreeDlg",hItemClass);  // 在二级子项目下面插入三级子项目
	m_TreeCtl.InsertItem("Dialog",hItemRes);
	HTREEITEM  hTREESourF=m_TreeCtl.InsertItem("Source Files",hItemFile);

	TVITEM  tvItem;   // InsertItem()成员函数有多种重载形式，声明要插入的项目
	tvItem.mask=TVIF_TEXT;
	tvItem.pszText="MyTreeDlg.cpp";
	TV_INSERTSTRUCT  tvInsert;    // 声明插入项
	tvInsert.hParent=hTREESourF;
	tvInsert.hInsertAfter=TVI_LAST;
	tvInsert.item=tvItem;     // 要插入的项目
	m_TreeCtl.InsertItem(&tvInsert);   // 在子项目Source Files下面插入子项目
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CMyTreeDlg::OnButnadd() 
{
	// TODO: Add your control notification handler code here
	CInputDlg  dlg;
	if(dlg.DoModal()==IDOK)
	{
		if(dlg.m_strItem=="")  return;   // 当没有输入名称时返回
		CString  strItem=dlg.m_strItem;
		HTREEITEM  hItem=m_TreeCtl.GetSelectedItem( );   // 获得树视控件的当前项目
		m_TreeCtl.InsertItem(strItem, hItem);    // 在当前项目下面添加新项目
		m_TreeCtl.Expand(hItem, TVE_EXPAND);  // 展开项目
	}
}

void CMyTreeDlg::OnButndel() 
{
	// TODO: Add your control notification handler code here
	HTREEITEM  hItem=m_TreeCtl.GetSelectedItem( );  // 获得当前项目
	if (hItem !=NULL)  m_TreeCtl.DeleteItem(hItem);  // 删除当前项目及它的下级项目。
}