ex42dlg.cpp

visual c++数据库开发基础与应用的源代码

// ex42Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "ex42.h"
#include "ex42Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CEx42Dlg dialog

CEx42Dlg::CEx42Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEx42Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEx42Dlg)
	m_strItem = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CEx42Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEx42Dlg)
	DDX_Control(pDX, IDC_TREE_CTRL, m_treeSchool);
	DDX_Text(pDX, IDC_EDIT_ITEM, m_strItem);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEx42Dlg, CDialog)
	//{{AFX_MSG_MAP(CEx42Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_ADD, OnBtnAdd)
	ON_BN_CLICKED(IDC_BTN_DEL, OnBtnDel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx42Dlg message handlers

BOOL CEx42Dlg::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
	//创建CImageList对象
	m_imageList.Create(16, 16, ILC_COLOR8, 0, 4);
	//加载六个图标
	m_imageList.Add(AfxGetApp()->LoadIcon(IDI_ICON_ROOT));
	m_imageList.Add(AfxGetApp()->LoadIcon(IDI_ICON_FIRST));
	m_imageList.Add(AfxGetApp()->LoadIcon(IDI_ICON_FIRSTOPEN));
	m_imageList.Add(AfxGetApp()->LoadIcon(IDI_ICON_SECOND));
	m_imageList.Add(AfxGetApp()->LoadIcon(IDI_ICON_SECONDOPEN));
	//向树形控件添加图像列表
	m_treeSchool.SetImageList(&m_imageList,TVSIL_NORMAL);
	//设置根节点
	TVINSERTSTRUCT tvInsert;
	HTREEITEM hParent;
	tvInsert.hParent = NULL;
	tvInsert.hInsertAfter = NULL;
	tvInsert.item.mask = TVIF_TEXT;
	tvInsert.item.pszText = _T("大学");
	hParent = m_treeSchool.InsertItem(&tvInsert);
	//添加第一级项目“管理学院”
	HTREEITEM h1 = m_treeSchool.InsertItem("管理学院",1,2,hParent);
	//添加第一级项目“管理学院”下的子项目，即第二级
	m_treeSchool.InsertItem("企业管理系",3,4,h1);
	m_treeSchool.InsertItem("会计系",3,4,h1);
	m_treeSchool.InsertItem("商学系",3,4,h1);
	//添加其他第一级项目
	m_treeSchool.InsertItem("经济学院",1,2,hParent);
	m_treeSchool.InsertItem("文学院",1,2,hParent);
	m_treeSchool.InsertItem("新闻学院",1,2,hParent);
	m_treeSchool.InsertItem("艺术学院",1,2,hParent);
	//展开第一级项目
	m_treeSchool.Expand(hParent,TVE_EXPAND);
	
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CEx42Dlg::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 CEx42Dlg::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 CEx42Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEx42Dlg::OnBtnAdd() 
{
	// TODO: Add your control notification handler code here
	//从界面控件中获取数据.
	if(!UpdateData())
		return;
	//获取树形控件选择的项目
	HTREEITEM hItem = m_treeSchool.GetSelectedItem();
    //获取选择项目的子项目图像的索引、子项目选择后的图像索引，
	//以便设置新添加的项目索引
	int index,selindex;
	m_treeSchool.GetItemImage(m_treeSchool.GetChildItem(hItem),index,selindex);
    //插入新的子项目到选择的项目下
	m_treeSchool.InsertItem(m_strItem,index,selindex,hItem);
	//展开选择的项目，以便查看新增加的子项
	m_treeSchool.Expand(hItem,TVE_EXPAND);	
}

void CEx42Dlg::OnBtnDel() 
{
	// TODO: Add your control notification handler code here
	//获取树形控件选择的项目
	HTREEITEM hItem = m_treeSchool.GetSelectedItem();
	//删除选项的项目以及其下的所有子项
	m_treeSchool.DeleteItem(hItem);
}