ATL / WTL / STL

void CNewTestView::OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView)
{
    if (bActivate)
    {
	if (m_edit.GetSafeHwnd())
		m_edit.DestroyWindow();

	m_edit.Create(WS_VISIBLE | WS_BORDER | WS_CHILD, CRect(0,0,100,20), this, 1234);
    }

    CView::OnActivateView(bActivate, pActivateView, pDeactiveView);
}

// Note that 'this' may have been deleted at this point,
        //  (but only if pWnd != NULL)
        if (pWnd != NULL)
        {
            // Should have been detached by OnNcDestroy
#ifdef _DEBUG
            ASSERT(pMap->LookupPermanent(hWndOrig) == NULL);
#endif
        }

I know Active document server can render a  ole file such as office document, but i found AcroPDF also use Active document server  technology to load .pdf files in IE.

When I open a pdf file with UltraEdit,see binary data,not seems like a ole file.

why?

and anyone can tell me how can i create a Active document server to render a txt file.

thanks.

<pre lang="c++">
UINT_PTR CALLBACK MyOFNHookProc( HWND hdlg,  // handle to child dialog box
        UINT uiMsg,  // message identifier
        WPARAM wParam, // message parameter
        LPARAM lParam // message parameter
        )
{
 int nResult = FALSE;

 if (hdlg == NULL) 
  return 0;
#ifdef _DEBUG
 // from "_AfxCommDlgProc()" of the file "dlgcomm.cpp"
 _AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
 // =_AfxActivationWndProc(hwnd,uint,uint,long)
 if (pThreadState->m_pAlternateWndInit != NULL) 
  pThreadState->m_pAlternateWndInit = NULL;
#endif


 switch(uiMsg)
 {

 case WM_NOTIFY:
  {
   LPOFNOTIFY pOfn = (LPOFNOTIFY)lParam;
   switch(pOfn->hdr.code)
   {
   case CDN_SELCHANGE:
    {
     TCHAR dummy_buffer;

     // Get the required size for the 'files' buffer
     HWND hOwner = GetParent(hdlg);
     HWND hParent = GetParent(hOwner);
     UINT nfiles = CommDlg_OpenSave_GetSpec(hOwner, &dummy_buffer, 1);

     // Get the required size for the 'folder' buffer
     int cbLength = CommDlg_OpenSave_GetSpec(GetParent(hdlg), NULL, 0);

     cbLength += _MAX_PATH;

     if(cbLength>(pOfn->lpOFN)->nMaxFile)
     {

      if((pOfn->lpOFN)->lpstrFile)
       HeapFree(GetProcessHeap(),
       0,
       (pOfn->lpOFN)->lpstrFile);

      (pOfn->lpOFN)->lpstrFile = (LPTSTR) HeapAlloc(GetProcessHeap(),
       HEAP_ZERO_MEMORY,
       cbLength);
            (pOfn->lpOFN)->nMaxFile = cbLength;
     }

     nResult = TRUE;
     break;
    }
   default:
    break;
   }
   break;
  }
 default:
  break;
 }
 return nResult;
}

// call function
void CMultiSelectDlg::OnButton1() 
{
  #define NAMEBUF 1024

 TCHAR szFilters[]= _T("MyType Files (*.doc)|*.doc||");

   CFileDialog fileDlg(TRUE, _T("doc"), _T("*.doc"),
  OFN_FILEMUSTEXIST | OFN_HIDEREADONLY|OFN_ALLOWMULTISELECT, szFilters);

   fileDlg.m_ofn.lpstrFile= (LPTSTR) HeapAlloc(GetProcessHeap(),
  HEAP_ZERO_MEMORY,
  NAMEBUF);

 fileDlg.m_ofn.nMaxFile = NAMEBUF;   // redefine nMaxFile 
 fileDlg.m_ofn.lpfnHook = (LPOFNHOOKPROC)MyOFNHookProc;
  
 INT_PTR ret = fileDlg.DoModal();
 if (ret == IDOK)
 {
  int width = 0;
  CString str;
  CDC *pDC = m_listbox.GetDC();
  int saved = pDC->SaveDC();
  pDC->SelectObject(GetFont());

  UINT count = 0;

  POSITION pos = fileDlg.GetStartPosition();
  while (pos)
  {
   str = fileDlg.GetNextPathName(pos);
   m_listbox.AddString(str);
   CSize size(0, 0);
   size = pDC->GetTextExtent(str);
   width = width > size.cx ? width : size.cx;
   ++count;
  }
  pDC->RestoreDC(saved);
  ReleaseDC(pDC);
  m_listbox.SetHorizontalExtent(width + 5);

  str.Format(_T("%u files selected"), count);
  m_static.SetWindowText(str);
 }
 DWORD dwCode = CommDlgExtendedError();
 if (FNERR_BUFFERTOOSMALL==dwCode)
 {
  int i =0;
 }

 HeapFree(GetProcessHeap(),0,
  (fileDlg.m_ofn.lpstrFile));
}