MFC列表控件ListControl和树控件TreeControl



列表控件

 列表相关的类：CListCtrl-父类是CWnd，本质是一个控件； CListView-父类是CView，本质是一个视图。相当于在视图中嵌入了一个CListCtrl控件

 列表控件的使用

•    1.1 显示方式：LVS_ICON/LVS_SMALLICON/LVS_LIST/LVS_REPORT
•    1.2 图标：CListCtrl::SetImageList；CListCtrl::GetImageList
•    1.3 设置列：CListCtrl::InsertColumn
•    1.4 数据的添加：CListCtrl::InsertItem-插入数据项；CListCtrl::SetItemText-设置数据项的文本             
•    1.5 遍历数据项：CListCtrl::GetFirstSelectedItemPosition； CListCtrl::GetNextSelectedItem； CListCtrl::GetSelectedCount
•    1.6 数据项的删除：CListCtrl::DeleteItem-删除指定索引的数据项；CListCtrl::DeleteAllItems-删除所有项；CListCtrl::DeleteColumn-删除指定列
•    1.7 查找：CListCtrl::FindItem
•    1.8 附加数据：CListCtrl::SetItemData；CListCtrl::GetItemData   

实例：新建MFC基于对话框的工程MFCList；关键代码

void CMFCListDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_COMBO1, m_wndStyle);//添加下拉列表框的关联控件变量
    DDX_Control(pDX, IDC_LIST1, m_wndList);//添加列表控件的关联控件变量
}

BEGIN_MESSAGE_MAP(CMFCListDlg, CDialogEx)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_BN_CLICKED(IDC_BUTTON_Seclect, &CMFCListDlg::OnBnClickedButtonSeclect)//"获取选择项"控件的双击事件
    ON_BN_CLICKED(IDC_BUTTON_Delete, &CMFCListDlg::OnBnClickedButtonDelete)//"删除选择项"控件 的双击事件
    ON_CBN_SELCHANGE(IDC_COMBO1, &CMFCListDlg::OnCbnSelchangeCombo1)//下拉列表框的选择项改变事件
    ON_NOTIFY(NM_DBLCLK, IDC_LIST1, &CMFCListDlg::OnNMDblclkList1)//列表控件的双击项事件
END_MESSAGE_MAP()
//BOOL CMFCListDlg::OnInitDialog()调用下列代码
//初始化列表控件
InitListCtrl();
m_wndStyle.InsertString(0,L"图标(ICON)");
m_wndStyle.InsertString(1,L"小图标(SMALL ICON)");
m_wndStyle.InsertString(2,L"列表(LIST)");
m_wndStyle.InsertString(3,L"报表(REPORT)");
m_wndStyle.SetCurSel(0);

//"获取选择项"控件的双击事件
void CMFCListDlg::OnBnClickedButtonSeclect()
{
    POSITION pos=m_wndList.GetFirstSelectedItemPosition();
    while(pos)
    {
        int nItem=m_wndList.GetNextSelectedItem(pos);
        MessageBox(m_wndList.GetItemText(nItem,0));//显示数据项的文本
    }
}
//"删除选择项"控件 的双击事件
void CMFCListDlg::OnBnClickedButtonDelete()
{
    LVFINDINFO info;
    info.flags=LVFI_STRING|LVFI_PARTIAL;
    info.psz=L"stu.data";
    int index=0;
    if ((index=m_wndList.FindItem(&info))!=-1)
    {
        m_wndList.DeleteItem(index);
    }
}

//下拉列表框的选择项改变事件
void CMFCListDlg::OnCbnSelchangeCombo1()
{
    int nSel=m_wndStyle.GetCurSel();
    switch (nSel)
    {
    case 0://图标
        m_wndList.ModifyStyle(LVS_SMALLICON|LVS_LIST|LVS_REPORT,LVS_ICON);
        break;
    case 1://小图标
        m_wndList.ModifyStyle(LVS_ICON|LVS_LIST|LVS_REPORT,LVS_SMALLICON);
        break;
    case 2://列表
        m_wndList.ModifyStyle(LVS_SMALLICON|LVS_ICON|LVS_REPORT,LVS_LIST);
        break;
    case 3://报表
        m_wndList.ModifyStyle(LVS_ICON|LVS_LIST|LVS_SMALLICON,LVS_REPORT);
        break;
    }
}
//列表控件的双击项事件
void CMFCListDlg::OnNMDblclkList1(NMHDR *pNMHDR, LRESULT *pResult)
{
    LPNMITEMACTIVATE pNMItemActivate = reinterpret_cast(pNMHDR);
    // TODO: 在此添加控件通知处理程序代码
    int nSel=pNMItemActivate->iItem;
    if (-1!=nSel)
    {
        CString* pPath=(CString*)m_wndList.GetItemData(nSel);
        //MessageBox(*pPath);
        ShowFile(*pPath+L"\\*.*");
    }
    *pResult = 0;
}

void CMFCListDlg::InitListCtrl()
{
    //1 设置控件的图标列表
    CImageList* pILNormal=new CImageList;
    pILNormal->Create(IDB_NORMAL,32,1,RGB(0,0,0));
    m_wndList.SetImageList(pILNormal,LVSIL_NORMAL);
    //2 设置控件的小图标
    CImageList* pILSmall=new CImageList;
    pILSmall->Create(IDB_SMALL,18,1,RGB(0,0,0));
    m_wndList.SetImageList(pILSmall,LVSIL_SMALL);
    //3 设置列
    m_wndList.InsertColumn(0,L"名称",LVCFMT_LEFT,150);
    m_wndList.InsertColumn(1,L"大小",LVCFMT_LEFT,80);
    m_wndList.InsertColumn(2,L"类型",LVCFMT_LEFT,80);
    m_wndList.InsertColumn(3,L"修改日期",LVCFMT_LEFT,100);
    //4 插入测试数据
    m_wndList.InsertItem(0,L"文件",1);
    m_wndList.SetItemText(0,1,L"15");
    m_wndList.SetItemText(0,2,L"文件");
    m_wndList.SetItemText(0,3,L"2012-03-06");

    m_wndList.InsertItem(1,L"文件夹",0);
    m_wndList.SetItemText(1,1,L"12");
    m_wndList.SetItemText(1,2,L"文件夹");
    m_wndList.SetItemText(1,3,L"2011-03-06");
    //5 显示C盘根目录下的所有文件和文件夹
    //ShowFile(L"c:\\");
    //6 设置控件的背景色
    m_wndList.SetBkColor(RGB(200,200,200));
    m_wndList.SetTextColor(RGB(255,0,0));
    m_wndList.SetTextBkColor(CLR_NONE);
    //7 设置控件的背景图片
    m_wndList.SetBkImage(L"res\\MFCList.ico");
}

void CMFCListDlg::ShowFile(CString strPath)
{
    //添加数据前，先清空原有数据
    m_wndList.DeleteAllItems();
    int index=0;//添加数据项的索引
    CFileFind find;
    BOOL bRet=find.FindFile(strPath+"*.*");
    while (bRet)
    {
        bRet=find.FindNextFileW();
        if (find.IsDirectory())
        {
            m_wndList.InsertItem(index,find.GetFileName(),0);
            m_wndList.SetItemText(index,2,L"文件夹");
        }
        else
        {
            m_wndList.InsertItem(index,find.GetFileName(),1);
            DWORD nLen=find.GetLength();
            CString strLen;
            strLen.Format(L"%d",nLen);
            m_wndList.SetItemText(index,1,strLen);
        }
        //保存路径
        CString* pPath=new CString;
        *pPath=find.GetFilePath();
        m_wndList.SetItemData(index,(DWORD)pPath);
        index++;
    }
    find.Close();//结束查找
}

void CMFCListDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_COMBO1, m_wndStyle);//添加下拉列表框的关联控件变量
	DDX_Control(pDX, IDC_LIST1, m_wndList);//添加列表控件的关联控件变量
}

BEGIN_MESSAGE_MAP(CMFCListDlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_Seclect, &CMFCListDlg::OnBnClickedButtonSeclect)//"获取选择项"控件的双击事件
	ON_BN_CLICKED(IDC_BUTTON_Delete, &CMFCListDlg::OnBnClickedButtonDelete)//"删除选择项"控件 的双击事件
	ON_CBN_SELCHANGE(IDC_COMBO1, &CMFCListDlg::OnCbnSelchangeCombo1)//下拉列表框的选择项改变事件
	ON_NOTIFY(NM_DBLCLK, IDC_LIST1, &CMFCListDlg::OnNMDblclkList1)//列表控件的双击项事件
END_MESSAGE_MAP()
//BOOL CMFCListDlg::OnInitDialog()调用下列代码
//初始化列表控件
InitListCtrl();
m_wndStyle.InsertString(0,L"图标(ICON)");
m_wndStyle.InsertString(1,L"小图标(SMALL ICON)");
m_wndStyle.InsertString(2,L"列表(LIST)");
m_wndStyle.InsertString(3,L"报表(REPORT)");
m_wndStyle.SetCurSel(0);

//"获取选择项"控件的双击事件
void CMFCListDlg::OnBnClickedButtonSeclect()
{ 
	POSITION pos=m_wndList.GetFirstSelectedItemPosition();
	while(pos)
	{
		int nItem=m_wndList.GetNextSelectedItem(pos);
		MessageBox(m_wndList.GetItemText(nItem,0));//显示数据项的文本
	}
}
//"删除选择项"控件 的双击事件
void CMFCListDlg::OnBnClickedButtonDelete()
{
	LVFINDINFO info;
	info.flags=LVFI_STRING|LVFI_PARTIAL;
	info.psz=L"stu.data";
	int index=0;
	if ((index=m_wndList.FindItem(&info))!=-1)
	{
		m_wndList.DeleteItem(index);
	}
}

//下拉列表框的选择项改变事件
void CMFCListDlg::OnCbnSelchangeCombo1()
{ 
	int nSel=m_wndStyle.GetCurSel();
	switch (nSel)
	{
	case 0://图标
		m_wndList.ModifyStyle(LVS_SMALLICON|LVS_LIST|LVS_REPORT,LVS_ICON);
		break;
	case 1://小图标
		m_wndList.ModifyStyle(LVS_ICON|LVS_LIST|LVS_REPORT,LVS_SMALLICON);
		break;
	case 2://列表
		m_wndList.ModifyStyle(LVS_SMALLICON|LVS_ICON|LVS_REPORT,LVS_LIST);
		break;
	case 3://报表
		m_wndList.ModifyStyle(LVS_ICON|LVS_LIST|LVS_SMALLICON,LVS_REPORT);
		break;
	}
} 
//列表控件的双击项事件
void CMFCListDlg::OnNMDblclkList1(NMHDR *pNMHDR, LRESULT *pResult)
{
	LPNMITEMACTIVATE pNMItemActivate = reinterpret_cast(pNMHDR);
	// TODO: 在此添加控件通知处理程序代码
	int nSel=pNMItemActivate->iItem;
	if (-1!=nSel)
	{
		CString* pPath=(CString*)m_wndList.GetItemData(nSel);
		//MessageBox(*pPath);
		ShowFile(*pPath+L"\\*.*");
	}
	*pResult = 0;
}

void CMFCListDlg::InitListCtrl()
{
	//1 设置控件的图标列表
	CImageList* pILNormal=new CImageList;
	pILNormal->Create(IDB_NORMAL,32,1,RGB(0,0,0));
	m_wndList.SetImageList(pILNormal,LVSIL_NORMAL);
	//2 设置控件的小图标
	CImageList* pILSmall=new CImageList;
	pILSmall->Create(IDB_SMALL,18,1,RGB(0,0,0));
	m_wndList.SetImageList(pILSmall,LVSIL_SMALL);
	//3 设置列
	m_wndList.InsertColumn(0,L"名称",LVCFMT_LEFT,150);
	m_wndList.InsertColumn(1,L"大小",LVCFMT_LEFT,80);
	m_wndList.InsertColumn(2,L"类型",LVCFMT_LEFT,80);
	m_wndList.InsertColumn(3,L"修改日期",LVCFMT_LEFT,100);
	//4 插入测试数据
	m_wndList.InsertItem(0,L"文件",1);
	m_wndList.SetItemText(0,1,L"15");
	m_wndList.SetItemText(0,2,L"文件");
	m_wndList.SetItemText(0,3,L"2012-03-06");

	m_wndList.InsertItem(1,L"文件夹",0);
	m_wndList.SetItemText(1,1,L"12");
	m_wndList.SetItemText(1,2,L"文件夹");
	m_wndList.SetItemText(1,3,L"2011-03-06");
	//5 显示C盘根目录下的所有文件和文件夹
	//ShowFile(L"c:\\");
	//6 设置控件的背景色
	m_wndList.SetBkColor(RGB(200,200,200));
	m_wndList.SetTextColor(RGB(255,0,0));
	m_wndList.SetTextBkColor(CLR_NONE);
	//7 设置控件的背景图片
	m_wndList.SetBkImage(L"res\\MFCList.ico");
}

void CMFCListDlg::ShowFile(CString strPath)
{
	//添加数据前，先清空原有数据
	m_wndList.DeleteAllItems();
	int index=0;//添加数据项的索引
	CFileFind find;
	BOOL bRet=find.FindFile(strPath+"*.*");
	while (bRet)
	{
		bRet=find.FindNextFileW();
		if (find.IsDirectory())
		{
			m_wndList.InsertItem(index,find.GetFileName(),0);
			m_wndList.SetItemText(index,2,L"文件夹");
		}
		else
		{
			m_wndList.InsertItem(index,find.GetFileName(),1);
			DWORD nLen=find.GetLength();
			CString strLen;
			strLen.Format(L"%d",nLen);
			m_wndList.SetItemText(index,1,strLen);
		}
		//保存路径
		CString* pPath=new CString;
		*pPath=find.GetFilePath();
		m_wndList.SetItemData(index,(DWORD)pPath);
		index++;
	}
	find.Close();//结束查找
}

运行结果：

树控件

树控件相关类：CTreeCtrl-父类是CWnd，本质上是一个控件；CTreeView -父类是CView，本质是一个视图。CTreeView是在CView中嵌入了一个CTreeCtrl控件

树控件的使用

•      2.1 设置图标：CTreeCtrl::SetImageList；CTreeCtrl::GetImageList
•      2.2 增加节点：CTreeCtrl::InserItem增加节点，并返回节点句柄
•      2.3 获取节点：CTreeCtrl::GetSelectedItem-获取选择的节点；CTreeCtrl::GetParentItem-获取节点的父节点；CTreeCtrl::GetRootItem-获取根节点 ...
•      2.4 判断：CTreeCtrl::ItemHasChildren-判断节点是否有子节点
•      2.5 删除节点：CTreeCtrl::DeleteItem-删除指定节点；CTreeCtrl::DeleteAllItems-删除所有节点
•      2.6 附加数据：CTreeCtrl::SetItemData；CTreeCtrl::GetItemData

实例：新建MFC基于对话框的工程MFCTree；关键代码

void CMFCTreeDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_TREE1, m_wndTree);//增加树控件的关联控件变量
}

BEGIN_MESSAGE_MAP(CMFCTreeDlg, CDialogEx)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_NOTIFY(NM_DBLCLK, IDC_TREE1, &CMFCTreeDlg::OnNMDblclkTree1)//双击树控件项的事件
END_MESSAGE_MAP()

//初始化树控件
void CMFCTreeDlg::InitTreeControl()
{
    //1.设置图标列表
    CImageList* pilNormal=new CImageList;
    BOOL bs=pilNormal->Create(IDB_NORMAL,16,1,RGB(1,0,0)); //IDB_NORMAL是 bitmap资源 64 x 16
    if (bs)
    {
        m_wndTree.SetImageList(pilNormal,TVSIL_NORMAL);
    }
    else
    {
        AfxMessageBox(L"adsfads");
    }
    m_wndTree.SetItemHeight(20);//设置行高
    HTREEITEM hRoot=m_wndTree.InsertItem(L"C:\\",0,2);//插入根目录
    ShowFile(L"c:\\",hRoot);
}
void CMFCTreeDlg::ShowFile(CString strPath,HTREEITEM hParent)
{
    if (m_wndTree.ItemHasChildren(hParent))
    {
        return;
    }
    CFileFind find;
    BOOL bRet=find.FindFile(strPath+"\\*.*");
    while(bRet)
    {
        HTREEITEM hItem;
        bRet=find.FindNextFileW();
        CString strName=find.GetFileName();
        if (!find.IsDots())
        {
            if (find.IsDirectory())
            {
                hItem=m_wndTree.InsertItem(strName,0,2,hParent);
            }
            else
            {
                hItem=m_wndTree.InsertItem(strName,1,3,hParent);
            }
            //保存路径
            CString *pPath=new CString;
            *pPath=find.GetFilePath();
            m_wndTree.SetItemData(hItem,(DWORD)pPath);
        }
    }
    find.Close();//结束查找
    m_wndTree.Expand(hParent,TVE_EXPAND);//展开根节点
}
//树控件项的双击事件
void CMFCTreeDlg::OnNMDblclkTree1(NMHDR *pNMHDR, LRESULT *pResult)
{
    HTREEITEM hCurItem=m_wndTree.GetSelectedItem();
    if (hCurItem==NULL || hCurItem==m_wndTree.GetRootItem())
    {
        return;
    }
    CString* pPath=(CString*)m_wndTree.GetItemData(hCurItem);
    //AfxMessageBox(*pPath);
    ShowFile(*pPath,hCurItem);
    *pResult = 0;
}

void CMFCTreeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_TREE1, m_wndTree);//增加树控件的关联控件变量
}

BEGIN_MESSAGE_MAP(CMFCTreeDlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()  
	ON_NOTIFY(NM_DBLCLK, IDC_TREE1, &CMFCTreeDlg::OnNMDblclkTree1)//双击树控件项的事件
END_MESSAGE_MAP()

//初始化树控件
void CMFCTreeDlg::InitTreeControl()
{
	//1.设置图标列表
	CImageList* pilNormal=new CImageList;
	BOOL bs=pilNormal->Create(IDB_NORMAL,16,1,RGB(1,0,0)); //IDB_NORMAL是 bitmap资源 64 x 16
	if (bs)
	{
		m_wndTree.SetImageList(pilNormal,TVSIL_NORMAL);
	}
	else
	{
		AfxMessageBox(L"adsfads");
	}
	m_wndTree.SetItemHeight(20);//设置行高
	HTREEITEM hRoot=m_wndTree.InsertItem(L"C:\\",0,2);//插入根目录
	ShowFile(L"c:\\",hRoot);
}
void CMFCTreeDlg::ShowFile(CString strPath,HTREEITEM hParent)
{
	if (m_wndTree.ItemHasChildren(hParent))
	{
		return;
	}
	CFileFind find;
	BOOL bRet=find.FindFile(strPath+"\\*.*");
	while(bRet)
	{
		HTREEITEM hItem;
		bRet=find.FindNextFileW();
		CString strName=find.GetFileName();
		if (!find.IsDots())
		{
			if (find.IsDirectory())
			{
				hItem=m_wndTree.InsertItem(strName,0,2,hParent);
			}
			else
			{
				hItem=m_wndTree.InsertItem(strName,1,3,hParent);
			}
			//保存路径
			CString *pPath=new CString;
			*pPath=find.GetFilePath();
			m_wndTree.SetItemData(hItem,(DWORD)pPath);
		}
	}
	find.Close();//结束查找
	m_wndTree.Expand(hParent,TVE_EXPAND);//展开根节点
}	 
//树控件项的双击事件
void CMFCTreeDlg::OnNMDblclkTree1(NMHDR *pNMHDR, LRESULT *pResult)
{ 
	HTREEITEM hCurItem=m_wndTree.GetSelectedItem();	
	if (hCurItem==NULL || hCurItem==m_wndTree.GetRootItem())
	{
		return;
	}
	CString* pPath=(CString*)m_wndTree.GetItemData(hCurItem);
	//AfxMessageBox(*pPath);
	ShowFile(*pPath,hCurItem);
	*pResult = 0;
}

运行结果：