NDING, OnItemexpanding)
ON_NOTIFY_REFLECT(TVN_SELCHANGING, OnSelchanging)
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CTreeView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CTreeView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CTreeView::OnFilePrintPreview)
END_MESSAGE_MAP()

///////////////////////////////////// CLeftView construction/destruction
CLeftView::CLeftView()
{
　// TODO: add construction code here
}

CLeftView::~CLeftView()
{}

BOOL CLeftView::PreCreateWindow(CREATESTRUCT& cs)
{
　// TODO: Modify the Window class or styles here by modifying the CREATESTRUCT cs
cs.style |= TVS_HASBUTTONS | TVS_LINESATROOT | TVS_HASLINES;
　return CTreeView::PreCreateWindow(cs);
}
void CLeftView::OnDraw(CDC* pDC)
{
　CDriveExplorerDoc* pDoc = GetDocument();
　ASSERT_VALID(pDoc);
　// TODO: add draw code for native data here
}

BOOL CLeftView::OnPreparePrinting(CPrintInfo* pInfo)
{
　// default preparation
　return DoPreparePrinting(pInfo);
}

void CLeftView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
　// TODO: add extra initialization before printing
}

void CLeftView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
　// TODO: add cleanup after printing
}

void CLeftView::OnInitialUpdate()
{
　CTreeView::OnInitialUpdate();
　m_pImageList = new CImageList();
　CWinApp* pApp = AfxGetApp();
　// ASSERT(m_pImageList != NULL); // serious allocation failure checking
　m_pImageList->Create(16, 16, ILC_COLOR8 | ILC_MASK, 9, 9);
　m_pImageList->Add(pApp->LoadIcon(ICO_CDDRV));
　m_pImageList->Add(pApp->LoadIcon(ICO_CLSDFLD));
　m_pImageList->Add(pApp->LoadIcon(ICO_DRIVE));
　m_pImageList->Add(pApp->LoadIcon(ICO_FLOPPYDRV));
　m_pImageList->Add(pApp->LoadIcon(ICO_MYCOMP));
　m_pImageList->Add(pApp->LoadIcon(ICO_OPENFLD));
　m_pImageList->Add(pApp->LoadIcon(ICO_TEXTFILE));
　GetTreeCtrl().SetImageList(m_pImageList , TVSIL_NORMAL);
　HTREEITEM hParent = GetTreeCtrl().InsertItem(MYCOMPUTER,
　ILI_MYCOMP, ILI_MYCOMP);
　InitTreeView(hParent);
　GetTreeCtrl().Expand(hParent, TVE_EXPAND);
}

#ifdef _DEBUG
void CLeftView::AssertValid() const
{
　CTreeView::AssertValid();
}

void CLeftView::Dump(CDumpContext& dc) const
{
　CTreeView::Dump(dc);
}

CDriveExplorerDoc* CLeftView::GetDocument() // non-debug version is inline
{
　ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDriveExplorerDoc)));
　return (CDriveExplorerDoc*)m_pDocument;
}
#endif //_DEBUG

void CLeftView::InitTreeView(HTREEITEM hParent)
{
　int nPos = 0;
　UINT nCount = 0;
　CString strDrive = "?:";
　DWORD dwDriveList = ::GetLogicalDrives ();
　CString cTmp;
　while (dwDriveList) {
　　if (dwDriveList & 1) {
　　　cTmp = strDrive;
　　　strDrive.SetAt (0, 0x41 + nPos);
　　　if (AddDrives(strDrive , hParent))
　　　　nCount++;
　　}
　　dwDriveList >>= 1;
　　nPos++;
　}
　return;
}

BOOL CLeftView::AddDrives(CString strDrive, HTREEITEM hParent)
{
　HTREEITEM hItem;
　UINT nType = ::GetDriveType ((LPCTSTR) strDrive);
　UINT nDrive = (UINT) strDrive[0] - 0x41;
　switch (nType) {
　　case DRIVE_RE