vc6.0下简单使用CTreeCtrl（转）

今天简单的学了下CTreeCtrl，新建一个基于单文档的MFC工程，在resource的IDD_DIALOG1里添加一个tree control，将其styles勾上has buttons，has lines，lines at root，通过classWizard添加一个继承于CDialog的类CExDialog，添加私有成员变量CImageList m_imageList，然后就在OnInitDialog()函数里添加树控件的细节：

BOOL CExDialog::OnInitDialog() { CDialog::OnInitDialog(); HICON hlcon[8]; m_imageList.Create( 16, 16, 0, 8, 8 ); hlcon[0] = AfxGetApp()->LoadIcon( IDI_ICON1 ); hlcon[1] = AfxGetApp()->LoadIcon( IDI_ICON2 ); hlcon[2] = AfxGetApp()->LoadIcon( IDI_ICON3 ); hlcon[3] = AfxGetApp()->LoadIcon( IDI_ICON4 ); hlcon[4] = AfxGetApp()->LoadIcon( IDI_ICON5 ); hlcon[5] = AfxGetApp()->LoadIcon( IDI_ICON6 ); hlcon[6] = AfxGetApp()->LoadIcon( IDI_ICON7 ); hlcon[7] = AfxGetApp()->LoadIcon( IDI_ICON8 ); for ( int n = 0; n < 8; n ++ ) { m_imageList.Add( hlcon[n] ); } CTreeCtrl* pTree = (CTreeCtrl*)GetDlgItem( IDC_TREEVIEW1 ); pTree->SetImageList( &m_imageList, TVSIL_NORMAL ); TV_INSERTSTRUCT tvinsert; tvinsert.hParent = NULL; tvinsert.hInsertAfter = TVI_LAST; tvinsert.item.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT; tvinsert.item.hItem = NULL; tvinsert.item.state = 0; tvinsert.item.stateMask = 0; tvinsert.item.cchTextMax = 6; tvinsert.item.iSelectedImage = 1; tvinsert.item.cChildren = 0; tvinsert.item.lParam = 0; tvinsert.item.iImage = 0; ////////////////////////////////////////////////////////////////////////// tvinsert.item.pszText = "HOMER"; HTREEITEM hDad = pTree->InsertItem( &tvinsert ); ////////////////////////////////////////////////////////////////////////// tvinsert.item.pszText = "Marge"; HTREEITEM hMom = pTree->InsertItem( &tvinsert ); tvinsert.hParent = hDad; tvinsert.item.pszText = "Bart"; tvinsert.item.iImage = 3; pTree->InsertItem( &tvinsert ); tvinsert.hParent = hMom; tvinsert.item.pszText = "Lisa"; tvinsert.item.iImage = 6; pTree->InsertItem( &tvinsert ); tvinsert.item.pszText = "Dilbart"; HTREEITEM hOther = pTree->InsertItem( &tvinsert ); tvinsert.hParent = hOther; tvinsert.item.pszText = "Dogbert"; tvinsert.item.iImage = 7; pTree->InsertItem( &tvinsert ); tvinsert.item.pszText = "Ratbert"; pTree->InsertItem( &tvinsert ); return TRUE; // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE } 这样就建立了两个父节点，HOMER和Marge，tvinsert.item.iSelectedImage 设置了当选中这项时显示什么图标，tvinsert.item.iImage设置了当没有选中时显示的图标，tvinsert.item.pszText设置显示出来的文本。如果没有对tvinsert.hParent进行更改设置，那么新添加的节点和上一个节点的父节点为同一节点。 下面这段代码实现了选中某一项进行的更改操作： void CExDialog::OnSelchangedTreeview1(NMHDR* pNMHDR, LRESULT* pResult) { NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR; CTreeCtrl* pTree = (CTreeCtrl*)GetDlgItem(IDC_TREEVIEW1); HTREEITEM hSelected = pNMTreeView->itemNew.hItem; if ( hSelected != NULL ) { char text[31]; TV_ITEM item; item.mask = TVIF_HANDLE | TVIF_TEXT; item.hItem = hSelected; item.pszText = text; item.cchTextMax = 30; VERIFY( pTree->GetItem(&item) ); SetDlgItemText( IDC_TREEVIEW1, text ); } *pResult = 0; } 有了这些代码还是不够的，如果想显示的话，我们要把这个头文件加入到TreeTestView.cpp里，添加OnLButtonDown事件，并添加一段代码： CExDialog dlg; dlg.DoModal();

ok，这样编译运行下，点击鼠标左键，就会出现一个树状控件，呵呵，简单吧。。。
这些只是实现了静态添加树节点。以后还要深入的学习！