src/generic/notebook.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/notebook.cpp
   3 // Purpose:     generic implementation of wxNotebook
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_NOTEBOOK
  28
  29 #include  "wx/notebook.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include  "wx/dcclient.h"
  35     #include  "wx/settings.h"
  36 #endif
  37
  38 #include  "wx/generic/imaglist.h"
  39 #include  "wx/generic/tabg.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // macros
  43 // ----------------------------------------------------------------------------
  44
  45 // check that the page index is valid
  46 #define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())
  47
  48 // ----------------------------------------------------------------------------
  49 // event table
  50 // ----------------------------------------------------------------------------
  51
  52 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
  53 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
  54
  55 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
  56     EVT_NOTEBOOK_PAGE_CHANGED(wxID_ANY, wxNotebook::OnSelChange)
  57     EVT_SIZE(wxNotebook::OnSize)
  58     EVT_PAINT(wxNotebook::OnPaint)
  59     EVT_MOUSE_EVENTS(wxNotebook::OnMouseEvent)
  60     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
  61     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
  62 END_EVENT_TABLE()
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
  65 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
  66
  67 // ============================================================================
  68 // implementation
  69 // ============================================================================
  70
  71 // ============================================================================
  72 // Private class
  73 // ============================================================================
  74
  75 WX_DECLARE_HASH_MAP(int, wxNotebookPage*, wxIntegerHash, wxIntegerEqual,
  76                     wxIntToNotebookPageHashMap);
  77
  78 WX_DECLARE_HASH_MAP(wxNotebookPage*, int, wxPointerHash, wxPointerEqual,
  79                     wxNotebookPageToIntHashMap);
  80
  81 // This reuses wxTabView to draw the tabs.
  82 class WXDLLEXPORT wxNotebookTabView: public wxTabView
  83 {
  84 DECLARE_DYNAMIC_CLASS(wxNotebookTabView)
  85 public:
  86     wxNotebookTabView(wxNotebook* notebook, long style = wxTAB_STYLE_DRAW_BOX | wxTAB_STYLE_COLOUR_INTERIOR);
  87     ~wxNotebookTabView(void);
  88
  89     // Called when a tab is activated
  90     virtual void OnTabActivate(int activateId, int deactivateId);
  91     // Allows vetoing
  92     virtual bool OnTabPreActivate(int activateId, int deactivateId);
  93
  94     // map integer ids used by wxTabView to wxNotebookPage pointers
  95     int GetId(wxNotebookPage *page);
  96     wxNotebookPage *GetPage(int id) { return m_idToPage[id]; }
  97
  98 protected:
  99     wxNotebook* m_notebook;
 100
 101 private:
 102     wxIntToNotebookPageHashMap m_idToPage;
 103     wxNotebookPageToIntHashMap m_pageToId;
 104     int m_nextid;
 105 };
 106
 107 static int GetPageId(wxTabView *tabview, wxNotebookPage *page)
 108 {
 109     return wx_static_cast(wxNotebookTabView*, tabview)->GetId(page);
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // wxNotebook construction
 114 // ----------------------------------------------------------------------------
 115
 116 // common part of all ctors
 117 void wxNotebook::Init()
 118 {
 119     m_tabView = (wxNotebookTabView*) NULL;
 120     m_nSelection = -1;
 121 }
 122
 123 // default for dynamic class
 124 wxNotebook::wxNotebook()
 125 {
 126     Init();
 127 }
 128
 129 // the same arguments as for wxControl
 130 wxNotebook::wxNotebook(wxWindow *parent,
 131                        wxWindowID id,
 132                        const wxPoint& pos,
 133                        const wxSize& size,
 134                        long style,
 135                        const wxString& name)
 136 {
 137     Init();
 138
 139     Create(parent, id, pos, size, style, name);
 140 }
 141
 142 // Create() function
 143 bool wxNotebook::Create(wxWindow *parent,
 144                         wxWindowID id,
 145                         const wxPoint& pos,
 146                         const wxSize& size,
 147                         long style,
 148                         const wxString& name)
 149 {
 150     // base init
 151     SetName(name);
 152
 153     m_windowId = id == wxID_ANY ? NewControlId() : id;
 154
 155     if (!wxControl::Create(parent, id, pos, size, style|wxNO_BORDER, wxDefaultValidator, name))
 156         return false;
 157
 158     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 159
 160     SetTabView(new wxNotebookTabView(this));
 161
 162     return true;
 163 }
 164
 165 // dtor
 166 wxNotebook::~wxNotebook()
 167 {
 168     delete m_tabView;
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // wxNotebook accessors
 173 // ----------------------------------------------------------------------------
 174 int wxNotebook::GetRowCount() const
 175 {
 176     // TODO
 177     return 0;
 178 }
 179
 180 int wxNotebook::SetSelection(size_t nPage)
 181 {
 182     wxASSERT( IS_VALID_PAGE(nPage) );
 183
 184     wxNotebookPage* pPage = GetPage(nPage);
 185
 186     m_tabView->SetTabSelection(GetPageId(m_tabView, pPage));
 187
 188     // TODO
 189     return 0;
 190 }
 191
 192 #if 0
 193 void wxNotebook::AdvanceSelection(bool bForward)
 194 {
 195     int nSel = GetSelection();
 196     int nMax = GetPageCount() - 1;
 197     if ( bForward )
 198         SetSelection(nSel == nMax ? 0 : nSel + 1);
 199     else
 200         SetSelection(nSel == 0 ? nMax : nSel - 1);
 201 }
 202 #endif
 203
 204 bool wxNotebook::SetPageText(size_t nPage, const wxString& strText)
 205 {
 206     wxASSERT( IS_VALID_PAGE(nPage) );
 207
 208     wxNotebookPage* page = GetPage(nPage);
 209     if (page)
 210     {
 211         m_tabView->SetTabText(GetPageId(m_tabView, page), strText);
 212         Refresh();
 213         return true;
 214     }
 215
 216     return false;
 217 }
 218
 219 wxString wxNotebook::GetPageText(size_t nPage) const
 220 {
 221     wxASSERT( IS_VALID_PAGE(nPage) );
 222
 223     wxNotebookPage* page = ((wxNotebook*)this)->GetPage(nPage);
 224     if (page)
 225         return m_tabView->GetTabText(GetPageId(m_tabView, page));
 226     else
 227         return wxEmptyString;
 228 }
 229
 230 int wxNotebook::GetPageImage(size_t WXUNUSED_UNLESS_DEBUG(nPage)) const
 231 {
 232     wxASSERT( IS_VALID_PAGE(nPage) );
 233
 234     // TODO
 235     return 0;
 236 }
 237
 238 bool wxNotebook::SetPageImage(size_t WXUNUSED_UNLESS_DEBUG(nPage),
 239                               int WXUNUSED(nImage))
 240 {
 241     wxASSERT( IS_VALID_PAGE(nPage) );
 242
 243     // TODO
 244     return false;
 245 }
 246
 247 // set the size (the same for all pages)
 248 void wxNotebook::SetPageSize(const wxSize& WXUNUSED(size))
 249 {
 250     // TODO
 251 }
 252
 253 // set the padding between tabs (in pixels)
 254 void wxNotebook::SetPadding(const wxSize& WXUNUSED(padding))
 255 {
 256     // TODO
 257 }
 258
 259 // set the size of the tabs for wxNB_FIXEDWIDTH controls
 260 void wxNotebook::SetTabSize(const wxSize& WXUNUSED(sz))
 261 {
 262     // TODO
 263 }
 264
 265 // ----------------------------------------------------------------------------
 266 // wxNotebook operations
 267 // ----------------------------------------------------------------------------
 268
 269 // remove one page from the notebook and delete it
 270 bool wxNotebook::DeletePage(size_t nPage)
 271 {
 272     wxCHECK( IS_VALID_PAGE(nPage), false );
 273
 274     if (m_nSelection != -1)
 275     {
 276         m_pages[m_nSelection]->Show(false);
 277         m_pages[m_nSelection]->Lower();
 278     }
 279
 280     wxNotebookPage* pPage = GetPage(nPage);
 281
 282     m_tabView->RemoveTab(GetPageId(m_tabView, pPage));
 283
 284     m_pages.Remove(pPage);
 285     delete pPage;
 286
 287     if (m_pages.GetCount() == 0)
 288     {
 289         m_nSelection = -1;
 290         m_tabView->SetTabSelection(-1, false);
 291     }
 292     else if (m_nSelection > -1)
 293     {
 294         m_nSelection = -1;
 295
 296         m_tabView->SetTabSelection(GetPageId(m_tabView, GetPage(0)), false);
 297
 298         if (m_nSelection != 0)
 299             ChangePage(-1, 0);
 300     }
 301
 302     RefreshLayout(false);
 303
 304     return true;
 305 }
 306
 307 bool wxNotebook::DeletePage(wxNotebookPage* page)
 308 {
 309     int pagePos = FindPagePosition(page);
 310     if (pagePos > -1)
 311         return DeletePage(pagePos);
 312     else
 313         return false;
 314 }
 315
 316 bool wxNotebook::RemovePage(size_t nPage)
 317 {
 318     return DoRemovePage(nPage) != NULL;
 319 }
 320
 321 // remove one page from the notebook
 322 wxWindow* wxNotebook::DoRemovePage(size_t nPage)
 323 {
 324     wxCHECK( IS_VALID_PAGE(nPage), NULL );
 325
 326     m_pages[nPage]->Show(false);
 327     //    m_pages[nPage]->Lower();
 328
 329     wxNotebookPage* pPage = GetPage(nPage);
 330
 331     m_tabView->RemoveTab(GetPageId(m_tabView, pPage));
 332
 333     m_pages.Remove(pPage);
 334
 335     if (m_pages.GetCount() == 0)
 336     {
 337       m_nSelection = -1;
 338       m_tabView->SetTabSelection(-1, true);
 339     }
 340     else if (m_nSelection > -1)
 341     {
 342       // Only change the selection if the page we
 343       // deleted was the selection.
 344       if (nPage == (size_t)m_nSelection)
 345       {
 346          m_nSelection = -1;
 347          // Select the first tab. Generates a ChangePage.
 348          m_tabView->SetTabSelection(0, true);
 349       }
 350       else
 351       {
 352         // We must adjust which tab we think is selected.
 353         // If greater than the page we deleted, it must be moved down
 354         // a notch.
 355         if (size_t(m_nSelection) > nPage)
 356           m_nSelection -- ;
 357       }
 358     }
 359
 360     RefreshLayout(false);
 361
 362     return pPage;
 363 }
 364
 365 bool wxNotebook::RemovePage(wxNotebookPage* page)
 366 {
 367     int pagePos = FindPagePosition(page);
 368     if (pagePos > -1)
 369         return RemovePage(pagePos);
 370     else
 371         return false;
 372 }
 373
 374 // Find the position of the wxNotebookPage, -1 if not found.
 375 int wxNotebook::FindPagePosition(wxNotebookPage* page) const
 376 {
 377     size_t nPageCount = GetPageCount();
 378     size_t nPage;
 379     for ( nPage = 0; nPage < nPageCount; nPage++ )
 380         if (m_pages[nPage] == page)
 381             return nPage;
 382     return -1;
 383 }
 384
 385 // remove all pages
 386 bool wxNotebook::DeleteAllPages()
 387 {
 388     m_tabView->ClearTabs(true);
 389
 390     size_t nPageCount = GetPageCount();
 391     size_t nPage;
 392     for ( nPage = 0; nPage < nPageCount; nPage++ )
 393         delete m_pages[nPage];
 394
 395     m_pages.Clear();
 396
 397     return true;
 398 }
 399
 400 // same as AddPage() but does it at given position
 401 bool wxNotebook::InsertPage(size_t nPage,
 402                             wxNotebookPage *pPage,
 403                             const wxString& strText,
 404                             bool bSelect,
 405                             int WXUNUSED(imageId))
 406 {
 407     wxASSERT( pPage != NULL );
 408     wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), false );
 409
 410     m_tabView->AddTab(GetPageId(m_tabView, pPage), strText);
 411
 412     if (!bSelect)
 413       pPage->Show(false);
 414
 415     // save the pointer to the page
 416     m_pages.Insert(pPage, nPage);
 417
 418     if (bSelect)
 419     {
 420         // This will cause ChangePage to be called, via OnSelPage
 421
 422         m_tabView->SetTabSelection(GetPageId(m_tabView, pPage), true);
 423     }
 424
 425     // some page must be selected: either this one or the first one if there is
 426     // still no selection
 427     if ( m_nSelection == -1 )
 428       ChangePage(-1, 0);
 429
 430     RefreshLayout(false);
 431
 432     return true;
 433 }
 434
 435 // ----------------------------------------------------------------------------
 436 // wxNotebook callbacks
 437 // ----------------------------------------------------------------------------
 438
 439 // @@@ OnSize() is used for setting the font when it's called for the first
 440 //     time because doing it in ::Create() doesn't work (for unknown reasons)
 441 void wxNotebook::OnSize(wxSizeEvent& event)
 442 {
 443     static bool s_bFirstTime = true;
 444     if ( s_bFirstTime ) {
 445         // TODO: any first-time-size processing.
 446         s_bFirstTime = false;
 447     }
 448
 449     RefreshLayout();
 450
 451     // Processing continues to next OnSize
 452     event.Skip();
 453 }
 454
 455 // This was supposed to cure the non-display of the notebook
 456 // until the user resizes the window.
 457 // What's going on?
 458 void wxNotebook::OnInternalIdle()
 459 {
 460     wxWindow::OnInternalIdle();
 461
 462 #if 0
 463     static bool s_bFirstTime = true;
 464     if ( s_bFirstTime ) {
 465       /*
 466       wxSize sz(GetSize());
 467       sz.x ++;
 468       SetSize(sz);
 469       sz.x --;
 470       SetSize(sz);
 471       */
 472
 473       /*
 474       wxSize sz(GetSize());
 475       wxSizeEvent sizeEvent(sz, GetId());
 476       sizeEvent.SetEventObject(this);
 477       GetEventHandler()->ProcessEvent(sizeEvent);
 478       Refresh();
 479       */
 480       s_bFirstTime = false;
 481     }
 482 #endif
 483 }
 484
 485 // Implementation: calculate the layout of the view rect
 486 // and resize the children if required
 487 bool wxNotebook::RefreshLayout(bool force)
 488 {
 489     if (m_tabView)
 490     {
 491         wxRect oldRect = m_tabView->GetViewRect();
 492
 493         int cw, ch;
 494         GetClientSize(& cw, & ch);
 495
 496         int tabHeight = m_tabView->GetTotalTabHeight();
 497         wxRect rect;
 498         rect.x = 4;
 499         rect.y = tabHeight + 4;
 500         rect.width = cw - 8;
 501         rect.height = ch - 4 - rect.y ;
 502
 503         m_tabView->SetViewRect(rect);
 504
 505         m_tabView->LayoutTabs();
 506
 507         // Need to do it a 2nd time to get the tab height with
 508         // the new view width, since changing the view width changes the
 509         // tab layout.
 510         tabHeight = m_tabView->GetTotalTabHeight();
 511         rect.x = 4;
 512         rect.y = tabHeight + 4;
 513         rect.width = cw - 8;
 514         rect.height = ch - 4 - rect.y ;
 515
 516         m_tabView->SetViewRect(rect);
 517
 518         m_tabView->LayoutTabs();
 519
 520         if (!force && (rect == oldRect))
 521           return false;
 522
 523         // fit the notebook page to the tab control's display area
 524
 525         size_t nCount = m_pages.Count();
 526         for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
 527             wxNotebookPage *pPage = m_pages[nPage];
 528             wxRect clientRect = GetAvailableClientSize();
 529             if (pPage->IsShown())
 530             {
 531                 pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 532                 if ( pPage->GetAutoLayout() )
 533                    pPage->Layout();
 534             }
 535         }
 536         Refresh();
 537     }
 538     return true;
 539 }
 540
 541 void wxNotebook::OnSelChange(wxNotebookEvent& event)
 542 {
 543     // is it our tab control?
 544     if ( event.GetEventObject() == this )
 545     {
 546         if (event.GetSelection() != m_nSelection)
 547           ChangePage(event.GetOldSelection(), event.GetSelection());
 548     }
 549
 550     // we want to give others a chance to process this message as well
 551     event.Skip();
 552 }
 553
 554 void wxNotebook::OnSetFocus(wxFocusEvent& event)
 555 {
 556     // set focus to the currently selected page if any
 557     if ( m_nSelection != -1 )
 558         m_pages[m_nSelection]->SetFocus();
 559
 560     event.Skip();
 561 }
 562
 563 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 564 {
 565     if ( event.IsWindowChange() ) {
 566         // change pages
 567         AdvanceSelection(event.GetDirection());
 568     }
 569     else {
 570         // pass to the parent
 571         if ( GetParent() ) {
 572             event.SetCurrentFocus(this);
 573             GetParent()->ProcessEvent(event);
 574         }
 575     }
 576 }
 577
 578 // ----------------------------------------------------------------------------
 579 // wxNotebook base class virtuals
 580 // ----------------------------------------------------------------------------
 581
 582 // override these 2 functions to do nothing: everything is done in OnSize
 583
 584 void wxNotebook::SetConstraintSizes(bool /* recurse */)
 585 {
 586     // don't set the sizes of the pages - their correct size is not yet known
 587     wxControl::SetConstraintSizes(false);
 588 }
 589
 590 bool wxNotebook::DoPhase(int /* nPhase */)
 591 {
 592     return true;
 593 }
 594
 595 void wxNotebook::Command(wxCommandEvent& WXUNUSED(event))
 596 {
 597     wxFAIL_MSG(wxT("wxNotebook::Command not implemented"));
 598 }
 599
 600 // ----------------------------------------------------------------------------
 601 // wxNotebook helper functions
 602 // ----------------------------------------------------------------------------
 603
 604 // hide the currently active panel and show the new one
 605 void wxNotebook::ChangePage(int nOldSel, int nSel)
 606 {
 607   //  cout << "ChangePage: " << nOldSel << ", " << nSel << "\n";
 608     wxASSERT( nOldSel != nSel ); // impossible
 609
 610     if ( nOldSel != -1 ) {
 611         m_pages[nOldSel]->Show(false);
 612         m_pages[nOldSel]->Lower();
 613     }
 614
 615     wxNotebookPage *pPage = m_pages[nSel];
 616
 617     wxRect clientRect = GetAvailableClientSize();
 618     pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 619
 620     Refresh();
 621
 622     pPage->Show(true);
 623     pPage->Raise();
 624     pPage->SetFocus();
 625
 626     m_nSelection = nSel;
 627 }
 628
 629 void wxNotebook::OnMouseEvent(wxMouseEvent& event)
 630 {
 631   if (m_tabView)
 632     m_tabView->OnEvent(event);
 633 }
 634
 635 void wxNotebook::OnPaint(wxPaintEvent& WXUNUSED(event) )
 636 {
 637     wxPaintDC dc(this);
 638     if (m_tabView)
 639         m_tabView->Draw(dc);
 640 }
 641
 642 wxSize wxNotebook::CalcSizeFromPage(const wxSize& sizePage) const
 643 {
 644     // MBN: since the total tab height is really a function of the
 645     // width, this should really call
 646     // GetTotalTabHeightPretendingWidthIs(), but the current
 647     // implementation will suffice, provided the wxNotebook has been
 648     // created with a sensible initial width.
 649     return wxSize( sizePage.x + 12,
 650                    sizePage.y + m_tabView->GetTotalTabHeight() + 6 + 4 );
 651 }
 652
 653 wxRect wxNotebook::GetAvailableClientSize()
 654 {
 655     int cw, ch;
 656     GetClientSize(& cw, & ch);
 657
 658     int tabHeight = m_tabView->GetTotalTabHeight();
 659
 660     // TODO: these margins should be configurable.
 661     wxRect rect;
 662     rect.x = 6;
 663     rect.y = tabHeight + 6;
 664     rect.width = cw - 12;
 665     rect.height = ch - 4 - rect.y ;
 666
 667     return rect;
 668 }
 669
 670 /*
 671  * wxNotebookTabView
 672  */
 673
 674 IMPLEMENT_CLASS(wxNotebookTabView, wxTabView)
 675
 676 wxNotebookTabView::wxNotebookTabView(wxNotebook *notebook, long style)
 677     : wxTabView(style), m_nextid(1)
 678 {
 679   m_notebook = notebook;
 680
 681   m_notebook->SetTabView(this);
 682
 683   SetWindow(m_notebook);
 684 }
 685
 686 wxNotebookTabView::~wxNotebookTabView(void)
 687 {
 688 }
 689
 690 int wxNotebookTabView::GetId(wxNotebookPage *page)
 691 {
 692     int& id = m_pageToId[page];
 693
 694     if (!id)
 695     {
 696         id = m_nextid++;
 697         m_idToPage[id] = page;
 698     }
 699
 700     return id;
 701 }
 702
 703 // Called when a tab is activated
 704 void wxNotebookTabView::OnTabActivate(int activateId, int deactivateId)
 705 {
 706   if (!m_notebook)
 707     return;
 708
 709   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED, m_notebook->GetId());
 710
 711   // Translate from wxTabView's ids (which aren't position-dependent)
 712   // to wxNotebook's (which are).
 713   wxNotebookPage* pActive = GetPage(activateId);
 714   wxNotebookPage* pDeactive = GetPage(deactivateId);
 715
 716   int activatePos = m_notebook->FindPagePosition(pActive);
 717   int deactivatePos = m_notebook->FindPagePosition(pDeactive);
 718
 719   event.SetEventObject(m_notebook);
 720   event.SetSelection(activatePos);
 721   event.SetOldSelection(deactivatePos);
 722   m_notebook->GetEventHandler()->ProcessEvent(event);
 723 }
 724
 725 // Allows Vetoing
 726 bool wxNotebookTabView::OnTabPreActivate(int activateId, int deactivateId)
 727 {
 728   bool retval = true;
 729
 730   if (m_notebook)
 731   {
 732     wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_notebook->GetId());
 733
 734     // Translate from wxTabView's ids (which aren't position-dependent)
 735     // to wxNotebook's (which are).
 736     wxNotebookPage* pActive = GetPage(activateId);
 737     wxNotebookPage* pDeactive = GetPage(deactivateId);
 738
 739     int activatePos = m_notebook->FindPagePosition(pActive);
 740     int deactivatePos = m_notebook->FindPagePosition(pDeactive);
 741
 742     event.SetEventObject(m_notebook);
 743     event.SetSelection(activatePos);
 744     event.SetOldSelection(deactivatePos);
 745     if (m_notebook->GetEventHandler()->ProcessEvent(event))
 746     {
 747       retval = event.IsAllowed();
 748     }
 749   }
 750   return retval;
 751 }
 752
 753 #endif // wxUSE_NOTEBOOK