MFC TREE控件实现父子联动选中功能：即父选中则子全选中，子全选中则父选中参考代码

逃离我推掉我的手 2022-05-23 01:46 232阅读 0赞

效果图：

注：点击时需点击文字，暂时没去研究其原因

源代码下载网址：https://download.csdn.net/download/zggzgw/10448400

![20180530201137786][]

// TreeSelectDlg.cpp : 实现文件
    //
    
    #include "stdafx.h"
    #include "TreeSelect.h"
    #include "TreeSelectDlg.h"
    #include "afxdialogex.h"
    
    #ifdef _DEBUG
    #define new DEBUG_NEW
    #endif
    #define UPDATECHECK		WM_USER + 113
    
    // 用于应用程序“关于”菜单项的 CAboutDlg 对话框
    
    class CAboutDlg : public CDialogEx
    {
    public:
    	CAboutDlg();
    
    // 对话框数据
    #ifdef AFX_DESIGN_TIME
    	enum { IDD = IDD_ABOUTBOX };
    #endif
    
    	protected:
    	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持
    	
    // 实现
    protected:
    	DECLARE_MESSAGE_MAP()
    };
    
    CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
    {
    }
    
    void CAboutDlg::DoDataExchange(CDataExchange* pDX)
    {
    	CDialogEx::DoDataExchange(pDX);
    }
    
    BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
    END_MESSAGE_MAP()
    
    
    // CTreeSelectDlg 对话框
    
    
    
    CTreeSelectDlg::CTreeSelectDlg(CWnd* pParent /*=NULL*/)
    	: CDialogEx(IDD_TREESELECT_DIALOG, pParent)
    {
    	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    }
    
    void CTreeSelectDlg::DoDataExchange(CDataExchange* pDX)
    {
    	CDialogEx::DoDataExchange(pDX);
    	DDX_Control(pDX, IDC_TREE1, selectTree);
    }
    
    BEGIN_MESSAGE_MAP(CTreeSelectDlg, CDialogEx)
    	ON_WM_SYSCOMMAND()
    	ON_WM_PAINT()
    	ON_WM_QUERYDRAGICON()
    	ON_NOTIFY(NM_CLICK, IDC_TREE1, &CTreeSelectDlg::OnClickTree1)
    	ON_WM_LBUTTONDOWN()
    
    	ON_NOTIFY(TVN_SELCHANGED, IDC_TREE1, &CTreeSelectDlg::OnSelchangedTree1)
    END_MESSAGE_MAP()
    
    
    // CTreeSelectDlg 消息处理程序
    
    BOOL CTreeSelectDlg::OnInitDialog()
    {
    	CDialogEx::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)
    	{
    		BOOL bNameValid;
    		CString strAboutMenu;
    		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
    		ASSERT(bNameValid);
    		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
    	
    	HTREEITEM hCataItem; // 可表示任一分类节点的句柄 
    	HTREEITEM hArtItem; // 可表示任一文章节点的句柄  
    	hRoot = selectTree.InsertItem(_T("All"), 0, 0);
    	selectTree.SetItemData(hRoot, 111);
    	CString str;
    	for (int i = 1;i < 12;i++)
    	{
    		str.Format(_T("LIne %d-P"), i);
    		hCataItem = selectTree.InsertItem(str, 1, 1, hRoot, TVI_LAST);
    		for (int j = 1;j <= 12;j++)
    		{
    			
    			str.Format(_T("Table %d"), j);
    			hArtItem = selectTree.InsertItem(str, 1, 1, hCataItem, TVI_LAST);
    			for (int k = 1;k <= 12;k++)
    			{
    				str.Format(_T("PC %d"), k);
    				selectTree.InsertItem(str, 1, 1, hArtItem, TVI_LAST);
    			}
    		}
    
    	}
    	for (int i = 1;i < 12;i++)
    	{
    		str.Format(_T("LIne %d-D"), i);
    		hCataItem = selectTree.InsertItem(str, 1, 1, hRoot, TVI_LAST);
    		for (int j = 1;j <= 12;j++)
    		{
    			str.Format(_T("Table %d"), j);
    			hArtItem = selectTree.InsertItem(str, 1, 1, hCataItem, TVI_LAST);
    			for (int k = 1;k <= 12;k++)
    			{
    				str.Format(_T("PC %d"), k);
    				selectTree.InsertItem(str, 1, 1, hArtItem, TVI_LAST);
    			}
    		}
    
    	}
    	
    
    	return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
    }
    
    void CTreeSelectDlg::OnSysCommand(UINT nID, LPARAM lParam)
    {
    	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
    	{
    		CAboutDlg dlgAbout;
    		dlgAbout.DoModal();
    	}
    	else
    	{
    		CDialogEx::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 CTreeSelectDlg::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);
    
    		// 使图标在工作区矩形中居中
    		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
    	{
    		CDialogEx::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 CTreeSelectDlg::OnQueryDragIcon()
    {
    	return static_cast<HCURSOR>(m_hIcon);
    }
    
    
    //点击Tree控件时检测项进行选择
    void CTreeSelectDlg::OnClickTree1(NMHDR *pNMHDR, LRESULT *pResult)
    {
    	// TODO: 在此添加控件通知处理程序代码
    	//MessageBox(_T("Clic"), _T("提示"));
    	CPoint pt = GetCurrentMessage()->pt; //获取当前鼠标点击消息的坐标点  
    	selectTree.ScreenToClient(&pt);      //将鼠标的屏幕坐标，转换成树形控件的客户区坐标  
    
    	 _hItem = selectTree.HitTest(pt, &_uFlags);//然后做点击测试  
    	
    	if ((_hItem != NULL) && (TVHT_ONITEM & _uFlags))//如果点击的位置是在节点位置上面  
    	{
    		selectTree.SelectItem(_hItem);
    
    	}
    	OnSelchangedTree1(0, 0);//虽然点击了但选择项没有改变，手动调用改变选择
    
    	*pResult = 0;
    }
    
    
    void CTreeSelectDlg::OnSelchangedTree1(NMHDR *pNMHDR, LRESULT *pResult)
    {
    	if (pNMHDR)
    	{
    		LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);
    	}
    	
    	// TODO: 在此添加控件通知处理程序代码
    
    	BOOL checkState = FALSE;
    	if ((_hItem != NULL) && (TVHT_ONITEM & _uFlags))//如果点击的位置是在节点位置上面  
    	{
    		selectTree.SelectItem(_hItem);
    		checkState = selectTree.GetCheck(_hItem);
    		if (checkState)//取消选择
    		{
    			selectTree.SelectItem(_hItem);
    			selectTree.SetCheck(_hItem, 0);
    			SelectChildBox(_hItem,0);//取消选择子选项的所有CHECK BOX
    			CancelParentAll(_hItem);//取消父的所选选项
    			_hItem = NULL;
    			_uFlags = 0;
    		}
    		else
    		{
    			selectTree.SelectItem(_hItem);
    			selectTree.SetCheck(_hItem, 1);
    			SelectChildBox(_hItem,1);//选择子选项的所有CHECK BOX
    			SelectlParentAll(_hItem);//判断兄弟选项是否全选，是则选中父的所有选项
    			_hItem = NULL;
    			_uFlags = 0;
    		}
    	}
    	if (pResult)
    	{
    		*pResult = 0;
    	}
    	
    }
    //选中指定ITEM的所有子项
    void CTreeSelectDlg::SelectChildBox(HTREEITEM pHtreeitem,int n)
    {
    	HTREEITEM br = selectTree.GetChildItem(pHtreeitem);
    	while (br)
    	{
    		selectTree.SetCheck(br, n);
    		SelectChildBox(br, n);
    		br = selectTree.GetNextSiblingItem(br);
    		
    	}
    	UpdateData(1);
    	return;
    }
    //取消父的所有选项状态
    void CTreeSelectDlg::CancelParentAll(HTREEITEM pHtreeitem)
    {
    	if (pHtreeitem)
    	{
    		selectTree.SetCheck(pHtreeitem, 0);
    		HTREEITEM hp = selectTree.GetParentItem(pHtreeitem);
    		CancelParentAll(hp);
    	}
    }
    //选择父的所有选项状态
    void CTreeSelectDlg::SelectlParentAll(HTREEITEM pHtreeitem)
    {
    	BOOL isAll = TRUE, isAll1 = TRUE, isAll2 = TRUE;
    	BOOL RET;
    	if (pHtreeitem)
    	{
    
    		isAll1 = CheckNextSiblingItem(pHtreeitem);
    		isAll2 = CheckPrevSiblingItem(pHtreeitem);
    		if (isAll1&&isAll2)
    		{
    			isAll = TRUE;
    		}
    		else
    		{
    			isAll = FALSE;
    		}
    		if (isAll)
    		{
    			HTREEITEM hp = selectTree.GetParentItem(pHtreeitem);
    			selectTree.SetCheck(hp, 1);
    			SelectlParentAll(hp);
    		}
    		
    	}
    
    }
    BOOL CTreeSelectDlg::CheckNextSiblingItem(HTREEITEM pHtreeitem)
    {
    	BOOL RET;
    	RET = selectTree.GetCheck(pHtreeitem);
    	if (RET == FALSE)
    	{
    		return  FALSE;
    	}
    	HTREEITEM br = selectTree.GetNextSiblingItem(pHtreeitem);
    	while (br)
    	{
    
    		RET = selectTree.GetCheck(br);
    		if (RET == FALSE)
    		{
    			return FALSE;
    		}
    		br = selectTree.GetNextSiblingItem(br);
    
    	}
    	return TRUE;
    }
    BOOL CTreeSelectDlg::CheckPrevSiblingItem(HTREEITEM pHtreeitem)
    {
    	BOOL RET;
    	RET = selectTree.GetCheck(pHtreeitem);
    	if (RET == FALSE)
    	{
    		return FALSE;
    	}
    	HTREEITEM br = selectTree.GetPrevSiblingItem(pHtreeitem);
    	while (br)
    	{
    
    		RET = selectTree.GetCheck(br);
    		if (RET == FALSE)
    		{
    			return FALSE;
    		}
    		br = selectTree.GetPrevSiblingItem(br);
    
    	}
    	return TRUE;
    }
    LRESULT CTreeSelectDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
    {
    	// TODO: 在此添加专用代码和/或调用基类
    	switch (message)
    	{
    	case UPDATECHECK:
    		
    		break;
    	}
    	return CDialogEx::WindowProc(message, wParam, lParam);
    }

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