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.

How to use this control:

Use it in a Dialog:

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

• 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 );
}

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