CTreeView 类的使用

首先在源文件中添加下列代码： void CMytree::OnInitialUpdate() { CTreeView::OnInitialUpdate(); // TODO: 在此添加专用代码和/或调用基类 m_ptheTree = &GetTreeCtrl();   m_ptheTree->ModifyStyle(0, TVS_HASLINES | TVS_LINESATROOT | TVS_HASBUTTONS); m_pImageList = new CImageList();   // 树子节点的图标 CWinApp* pApp=AfxGetApp(); m_pImageList->Create(16,16,ILC_COLOR8|ILC_MASK,9,9); m_pImageList->Add(pApp->LoadIcon(IDI_MY)); m_ptheTree->SetImageList(m_pImageList, TVSIL_NORMAL); HTREEITEM hTreeItem;   hTreeItem = m_ptheTree->InsertItem(L"我的电脑",0,0); InitTreeView(hTreeItem); } 再在类中添加 InitTreeView 函数，完成子项的添加： void CMytree::InitTreeView(HTREEITEM hParent) { int nPos = 0; UINT nCount = 0; CString strDrive = L"?:\\"; DWORD dwDriveList = ::GetLogicalDrives(); CString cTmp; while (dwDriveList) {    if (dwDriveList & 1)    {     cTmp = strDrive;     strDrive.SetAt (0, 0x41 + nPos);     if (AddDrives(strDrive , hParent))      nCount++;    }    dwDriveList >>= 2;    nPos++; } return; } BOOL CMytree::AddDrives(CString strDrive, HTREEITEM hParent) { HTREEITEM hItem; UINT nType = ::GetDriveType ((LPCTSTR) strDrive); UINT nDrive = (UINT) strDrive[0] - 0x41; switch (nType) { case DRIVE_REMOVABLE:    hItem = GetTreeCtrl().InsertItem(strDrive, 0, 0, hParent);    AddDummyNode(hItem);    break; case DRIVE_FIXED:    hItem = GetTreeCtrl().InsertItem(strDrive, 0, 0, hParent);    AddDummyNode(hItem);    break; case DRIVE_REMOTE:    hItem = GetTreeCtrl().InsertItem(strDrive, 0, 0, hParent);    AddDummyNode(hItem);    break; case DRIVE_CDROM:    hItem = GetTreeCtrl().InsertItem(strDrive, 0, 0, hParent);    AddDummyNode(hItem);    break; case DRIVE_RAMDISK:    hItem = GetTreeCtrl().InsertItem(strDrive, 0, 0, hParent);    AddDummyNode(hItem);    break; default:    return FALSE; } return true; } void CMytree::AddDummyNode(HTREEITEM hItem) { GetTreeCtrl().InsertItem (L"", 0, 0, hItem); }