VC控件 TreeCtrl 与 ListCtrl 演示

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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 hereTVITEM 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;    }