VC控件 TreeCtrl 与 ListCtrl 演示


作者：兰州大学现物系 王景生

下载源代码


这个例子类似于 Windows 的资源管理器,程序运行界面如图一所示：


图一

主要用到的类有：
CListCtrl,CTreeCtrl,CImageList,CFileFind 和函数SHGetFileInfo()

简述步骤如下：
1、增加 TreeCtrl 的 TVS_HASBUTTONS，TVS_HASLINES、TVS_LINESATROOT Style，代码如下：

 DWORD dwStyle = GetWindowLong(m_tree.m_hWnd,GWL_STYLE); dwStyle |= TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT; SetWindowLong(m_tree.m_hWnd,GWL_STYLE,dwStyle);

 m_hRoot = m_tree.InsertItem("我的电脑"); InsertItem()的函数原形为 HTREEITEM InsertItem( LPCTSTR lpszItem, HTREEITEM hParent = TVI_ROOT, HTREEITEM hInsertAfter = TVI_LAST ); 

 void CTreeViewDlg::GetLogicalDrives(HTREEITEM hParent) { size_t szAllDriveStrings = GetLogicalDriveStrings(0,NULL);	char *pDriveStrings = new char[szAllDriveStrings + sizeof(_T(""))];	GetLogicalDriveStrings(szAllDriveStrings,pDriveStrings);	size_t szDriveString = strlen(pDriveStrings);	while(szDriveString > 0)	{	m_tree.InsertItem(pDriveStrings,hParent);	pDriveStrings += szDriveString + 1;	szDriveString = strlen(pDriveStrings);	} } 

 void CTreeViewDlg::OnItemexpandedTree(NMHDR* pNMHDR, LRESULT* pResult) {	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;	// TODO: Add your control notification handler code here	TVITEM item = pNMTreeView->itemNew;	if(item.hItem == m_hRoot)	return; HTREEITEM hChild = m_tree.GetChildItem(item.hItem);	while(hChild)	{	AddSubDir(hChild);	hChild = m_tree.GetNextItem(hChild,TVGN_NEXT);	}	*pResult = 0; } 

 void CTreeViewDlg::OnSelchangedTree(NMHDR* pNMHDR, LRESULT* pResult) {	m_list.DeleteAllItems();	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;	TVITEM item = pNMTreeView->itemNew;	if(item.hItem == m_hRoot)	return;	CString str = GetFullPath(item.hItem); if(str.Right(1) != "\\") str += "\\";	str += "*.*";	CFileFind file;	BOOL bContinue = file.FindFile(str);	while(bContinue)	{	bContinue = file.FindNextFile();	if(!file.IsDirectory() && !file.IsDots())	{	SHFILEINFO info;	CString temp = str;	int index = temp.Find("*.*");	temp.Delete(index,3);	SHGetFileInfo(temp + file.GetFileName(),	0,	&info,sizeof(&info),	SHGFI_DISPLAYNAME | SHGFI_ICON);	int i = m_ImageList.Add(info.hIcon);	m_list.InsertItem(i,info.szDisplayName,i);	}	}	*pResult = 0; }