cimagelist_m_himagelist为空_cimagelist 蒙板(4)

运行结果：

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。cimagelistcimagelistCTreeView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

voidCMFCTreeDlg::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::OnblclkTree1)//双击树控件项的事件

END_MESSAGE_MAP()

//初始化树控件

voidCMFCTreeDlg::InitTreeControl()

{

//1.设置图标列表

CImageList*pilNormal=newCImageList;

BOOLbs=pilNormal->Create(IDB_NORMAL,16,1,RGB(1,0,0));//IDB_NORMAL是bitmap资源64x16

if(bs)

{

m_wndTree.SetImageList(pilNormal,TVSIL_NORMAL);

}

else

{

AfxMessageBox(L"adsfads");

}

m_wndTree.SetItemHeight(20);//设置行高

HTREEITEMhRoot=m_wndTree.InsertItem(L"C:\\",0,2);//插入根目录

ShowFile(L"c:\\",hRoot);

}

voidCMFCTreeDlg::ShowFile(CStringstrPath,HTREEITEMhParent)

{

if(m_wndTree.ItemHasChildren(hParent))

{

return;

}

CFileFindfind;

BOOLbRet=find.FindFile(strPath+"\\*.*");

while(bRet)

{

HTREEITEMhItem;

bRet=find.FindNextFileW();

CStringstrName=find.GetFileName();

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