CDirTreeCtrl for displaying or selecting Folders and Files

Environment: Visual C++ 6.0 SP3

This DirTreeCtrl allows a user to display folders and Filenames(optional).
The control uses the system image list for displaying the icons for the items in
the DirTreeCtrl.

You must not manage the Icon-Resources int the ImageList. The items sorted first by
foldernames and then (if selected) by filenames.

  • You can obtain the the full PathName of an Item.
  • You can set a start path before displaying the TreeItems.
  • You can select a subpath.
  • How to use this control:

    Use it in a Dialog:

    To use the control in a Dialog do the following steps:

  • Create a CTreeCtrl in your Dialog resource.

  • Define a member variable for the CDirTreeCtrl in the Dialog header file.
  • CDirTreeCtrl m_DirTree;
    

    Insert the Following Code in your OnInitDialog function:

    BOOL CTreeDialog::OnInitDialog() 
    {
     CDialog::OnInitDialog();
     TCHAR  szWorkDir[MAX_PATH];
        
     // TODO: Add extra initialization here
     // Here we subclass our CDirTreeCtrl
     if ( !m_TreeCtrl.m_hWnd )
     {
      if ( m_TreeCtrl.SubclassDlgItem( IDC_TREE1, this ) )
      {           
       m_TreeCtrl.DisplayTree( NULL /*Display all*/, 
                               TRUE /* TRUE = Display Files*/ );
    
       _getcwd( szWorkDir, 256 );
       // set the Path to the current Work-Directory
       m_TreeCtrl.SetSelPath( szWorkDir );
      }
     }
        
     return TRUE; // return TRUE unless you set the focus to a control
     // EXCEPTION: OCX Property Pages should return FALSE
    }
    

    Using the CDirTreeCtrl in a CView

    To use this control in a CView class do the following steps:
    • Define a CTreeCtrl member in your CView header file.
    • Define a ID_TREECTRL identifier in your CView header file.
    • In the class wizard implement the create function for the CView class.
    • Modify the CView::Create function listed below
    • In the class wizard implement the WM_SIZE function.
    • Modify the CView::OnSize function listed below.
    BOOL CLeftView::Create(LPCTSTR lpszClassName, 
                           LPCTSTR lpszWindowName, 
                           DWORD dwStyle, 
                           const RECT& rect, 
                           CWnd* pParentWnd, 
                           UINT nID, 
                           CCreateContext* pContext) 
    {
     // TODO: Add your specialized code here and/or call the base class
        
     BOOL  bRet;
    
     bRet = CWnd::Create(lpszClassName, 
                         lpszWindowName, 
                         dwStyle, 
                         rect, 
                         pParentWnd, 
                         nID, 
                         pContext);
    
     // this part creates the TreeCtrl and use the CLeftView
     // as his parent Window
        
     if ( m_DirTree.m_hWnd == NULL && bRet )
     {
      bRet = m_DirTree.Create(WS_CHILD | TVS_LINESATROOT | 
                              TVS_HASBUTTONS | WS_VISIBLE | 
                              TVS_HASLINES, 
                              CRect(0, 0, 0, 0), 
                              this
                              ID_TREECTRL );
      if ( bRet )
       m_DirTree.DisplayTree( NULL, TRUE );
     }
    
     return bRet;
    }
    
    void CLeftView::OnSize(UINT nType, int cx, int cy) 
    {
     CView::OnSize(nType, cx, cy);
    
     // TODO: Add your message handler code here
     if ( m_DirTree.m_hWnd )
      m_DirTree.SetWindowPos( NULL, 0, 0, cx, cy, SWP_NOZORDER | SWP_NOMOVE );
    }
    

    Downloads

    Download demo project - 55 Kb
    Download source - 5 Kb