src/msw/notebook.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/notebook.cpp
   3 // Purpose:     implementation of wxNotebook
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     11.06.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "notebook.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_NOTEBOOK
  24
  25 // wxWindows
  26 #ifndef WX_PRECOMP
  27   #include  "wx/string.h"
  28 #endif  // WX_PRECOMP
  29
  30 #include  "wx/log.h"
  31 #include  "wx/imaglist.h"
  32 #include  "wx/event.h"
  33 #include  "wx/control.h"
  34 #include  "wx/notebook.h"
  35 #include  "wx/app.h"
  36
  37 #include  "wx/msw/private.h"
  38
  39 // Windows standard headers
  40 #ifndef   __WIN95__
  41   #error  "wxNotebook is only supported Windows 95 and above"
  42 #endif    //Win95
  43
  44 #include  <windowsx.h>  // for SetWindowFont
  45
  46 #ifdef __GNUWIN32_OLD__
  47     #include "wx/msw/gnuwin32/extra.h"
  48 #endif
  49
  50 #if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
  51     #include <commctrl.h>
  52 #endif
  53
  54 #include "wx/msw/winundef.h"
  55
  56 #if wxUSE_UXTHEME
  57 #include "wx/msw/uxtheme.h"
  58
  59 #include "wx/radiobut.h"
  60 #include "wx/radiobox.h"
  61 #include "wx/checkbox.h"
  62 #include "wx/bmpbuttn.h"
  63 #include "wx/statline.h"
  64 #include "wx/statbox.h"
  65 #include "wx/stattext.h"
  66 #include "wx/slider.h"
  67 #include "wx/scrolwin.h"
  68 #include "wx/panel.h"
  69 #endif
  70
  71 // ----------------------------------------------------------------------------
  72 // macros
  73 // ----------------------------------------------------------------------------
  74
  75 // check that the page index is valid
  76 #define IS_VALID_PAGE(nPage) (((nPage) >= 0) && ((nPage) < GetPageCount()))
  77
  78 // hide the ugly cast
  79 #define m_hwnd    (HWND)GetHWND()
  80
  81 // ----------------------------------------------------------------------------
  82 // constants
  83 // ----------------------------------------------------------------------------
  84
  85 // This is a work-around for missing defines in gcc-2.95 headers
  86 #ifndef TCS_RIGHT
  87     #define TCS_RIGHT       0x0002
  88 #endif
  89
  90 #ifndef TCS_VERTICAL
  91     #define TCS_VERTICAL    0x0080
  92 #endif
  93
  94 #ifndef TCS_BOTTOM
  95     #define TCS_BOTTOM      TCS_RIGHT
  96 #endif
  97
  98 // ----------------------------------------------------------------------------
  99 // event table
 100 // ----------------------------------------------------------------------------
 101
 102 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
 103 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
 104
 105 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
 106     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
 107
 108     EVT_SIZE(wxNotebook::OnSize)
 109
 110     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
 111
 112     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
 113 END_EVENT_TABLE()
 114
 115 #if wxUSE_EXTENDED_RTTI
 116 IMPLEMENT_DYNAMIC_CLASS_XTI(wxNotebook, wxControl,"wx/notebook.h")
 117
 118 WX_BEGIN_PROPERTIES_TABLE(wxNotebook)
 119 WX_END_PROPERTIES_TABLE()
 120
 121 WX_BEGIN_HANDLERS_TABLE(wxNotebook)
 122 WX_END_HANDLERS_TABLE()
 123
 124 WX_CONSTRUCTOR_4( wxNotebook , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
 125
 126 #else
 127 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
 128 #endif
 129 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)
 130
 131 // ============================================================================
 132 // implementation
 133 // ============================================================================
 134
 135 // ----------------------------------------------------------------------------
 136 // wxNotebook construction
 137 // ----------------------------------------------------------------------------
 138
 139 // common part of all ctors
 140 void wxNotebook::Init()
 141 {
 142   m_imageList = NULL;
 143   m_nSelection = -1;
 144 }
 145
 146 // default for dynamic class
 147 wxNotebook::wxNotebook()
 148 {
 149   Init();
 150 }
 151
 152 // the same arguments as for wxControl
 153 wxNotebook::wxNotebook(wxWindow *parent,
 154                        wxWindowID id,
 155                        const wxPoint& pos,
 156                        const wxSize& size,
 157                        long style,
 158                        const wxString& name)
 159 {
 160   Init();
 161
 162   Create(parent, id, pos, size, style, name);
 163 }
 164
 165 // Create() function
 166 bool wxNotebook::Create(wxWindow *parent,
 167                         wxWindowID id,
 168                         const wxPoint& pos,
 169                         const wxSize& size,
 170                         long style,
 171                         const wxString& name)
 172 {
 173     // Does ComCtl32 support non-top tabs?
 174     int verComCtl32 = wxApp::GetComCtl32Version();
 175     if ( verComCtl32 < 470 || verComCtl32 >= 600 )
 176     {
 177         if (style & wxNB_BOTTOM)
 178             style &= ~wxNB_BOTTOM;
 179
 180         if (style & wxNB_LEFT)
 181             style &= ~wxNB_LEFT;
 182
 183         if (style & wxNB_RIGHT)
 184             style &= ~wxNB_RIGHT;
 185     }
 186
 187     if ( !CreateControl(parent, id, pos, size, style | wxTAB_TRAVERSAL,
 188                         wxDefaultValidator, name) )
 189         return FALSE;
 190
 191     if ( !MSWCreateControl(WC_TABCONTROL, wxEmptyString, pos, size) )
 192         return FALSE;
 193
 194     SetBackgroundColour(wxColour(::GetSysColor(COLOR_BTNFACE)));
 195
 196     return TRUE;
 197 }
 198
 199 WXDWORD wxNotebook::MSWGetStyle(long style, WXDWORD *exstyle) const
 200 {
 201     WXDWORD tabStyle = wxControl::MSWGetStyle(style, exstyle);
 202
 203     tabStyle |= WS_TABSTOP | TCS_TABS;
 204
 205     if ( style & wxNB_MULTILINE )
 206         tabStyle |= TCS_MULTILINE;
 207     if ( style & wxNB_FIXEDWIDTH )
 208         tabStyle |= TCS_FIXEDWIDTH;
 209
 210     if ( style & wxNB_BOTTOM )
 211         tabStyle |= TCS_RIGHT;
 212     else if ( style & wxNB_LEFT )
 213         tabStyle |= TCS_VERTICAL;
 214     else if ( style & wxNB_RIGHT )
 215         tabStyle |= TCS_VERTICAL | TCS_RIGHT;
 216
 217     // ex style
 218     if ( exstyle )
 219     {
 220         // note that we never want to have the default WS_EX_CLIENTEDGE style
 221         // as it looks too ugly for the notebooks
 222         *exstyle = 0;
 223     }
 224
 225     return tabStyle;
 226 }
 227
 228 // ----------------------------------------------------------------------------
 229 // wxNotebook accessors
 230 // ----------------------------------------------------------------------------
 231
 232 int wxNotebook::GetPageCount() const
 233 {
 234   // consistency check
 235   wxASSERT( (int)m_pages.Count() == TabCtrl_GetItemCount(m_hwnd) );
 236
 237   return m_pages.Count();
 238 }
 239
 240 int wxNotebook::GetRowCount() const
 241 {
 242   return TabCtrl_GetRowCount(m_hwnd);
 243 }
 244
 245 int wxNotebook::SetSelection(int nPage)
 246 {
 247   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, wxT("notebook page out of range") );
 248
 249   if ( nPage != m_nSelection )
 250   {
 251     wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_windowId);
 252     event.SetSelection(nPage);
 253     event.SetOldSelection(m_nSelection);
 254     event.SetEventObject(this);
 255     if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 256     {
 257       // program allows the page change
 258       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 259       (void)GetEventHandler()->ProcessEvent(event);
 260
 261       TabCtrl_SetCurSel(m_hwnd, nPage);
 262     }
 263   }
 264
 265   return m_nSelection;
 266 }
 267
 268 bool wxNotebook::SetPageText(int nPage, const wxString& strText)
 269 {
 270   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, wxT("notebook page out of range") );
 271
 272   TC_ITEM tcItem;
 273   tcItem.mask = TCIF_TEXT;
 274   tcItem.pszText = (wxChar *)strText.c_str();
 275
 276   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 277 }
 278
 279 wxString wxNotebook::GetPageText(int nPage) const
 280 {
 281   wxCHECK_MSG( IS_VALID_PAGE(nPage), wxEmptyString, wxT("notebook page out of range") );
 282
 283   wxChar buf[256];
 284   TC_ITEM tcItem;
 285   tcItem.mask = TCIF_TEXT;
 286   tcItem.pszText = buf;
 287   tcItem.cchTextMax = WXSIZEOF(buf);
 288
 289   wxString str;
 290   if ( TabCtrl_GetItem(m_hwnd, nPage, &tcItem) )
 291     str = tcItem.pszText;
 292
 293   return str;
 294 }
 295
 296 int wxNotebook::GetPageImage(int nPage) const
 297 {
 298   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, wxT("notebook page out of range") );
 299
 300   TC_ITEM tcItem;
 301   tcItem.mask = TCIF_IMAGE;
 302
 303   return TabCtrl_GetItem(m_hwnd, nPage, &tcItem) ? tcItem.iImage : -1;
 304 }
 305
 306 bool wxNotebook::SetPageImage(int nPage, int nImage)
 307 {
 308   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, wxT("notebook page out of range") );
 309
 310   TC_ITEM tcItem;
 311   tcItem.mask = TCIF_IMAGE;
 312   tcItem.iImage = nImage;
 313
 314   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 315 }
 316
 317 void wxNotebook::SetImageList(wxImageList* imageList)
 318 {
 319   wxNotebookBase::SetImageList(imageList);
 320
 321   if ( imageList )
 322   {
 323     TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
 324   }
 325 }
 326
 327 // ----------------------------------------------------------------------------
 328 // wxNotebook size settings
 329 // ----------------------------------------------------------------------------
 330
 331 void wxNotebook::SetPageSize(const wxSize& size)
 332 {
 333     // transform the page size into the notebook size
 334     RECT rc;
 335     rc.left =
 336     rc.top = 0;
 337     rc.right = size.x;
 338     rc.bottom = size.y;
 339
 340     TabCtrl_AdjustRect(GetHwnd(), TRUE, &rc);
 341
 342     // and now set it
 343     SetSize(rc.right - rc.left, rc.bottom - rc.top);
 344 }
 345
 346 void wxNotebook::SetPadding(const wxSize& padding)
 347 {
 348     TabCtrl_SetPadding(GetHwnd(), padding.x, padding.y);
 349 }
 350
 351 // Windows-only at present. Also, you must use the wxNB_FIXEDWIDTH
 352 // style.
 353 void wxNotebook::SetTabSize(const wxSize& sz)
 354 {
 355     ::SendMessage(GetHwnd(), TCM_SETITEMSIZE, 0, MAKELPARAM(sz.x, sz.y));
 356 }
 357
 358 wxSize wxNotebook::CalcSizeFromPage(const wxSize& sizePage) const
 359 {
 360     wxSize sizeTotal = sizePage;
 361
 362     // We need to make getting tab size part of the wxWindows API.
 363     wxSize tabSize(0, 0);
 364     if (GetPageCount() > 0)
 365     {
 366         RECT rect;
 367         TabCtrl_GetItemRect((HWND) GetHWND(), 0, & rect);
 368         tabSize.x = rect.right - rect.left;
 369         tabSize.y = rect.bottom - rect.top;
 370     }
 371     if ( HasFlag(wxNB_LEFT) || HasFlag(wxNB_RIGHT) )
 372     {
 373         sizeTotal.x += tabSize.x + 7;
 374         sizeTotal.y += 7;
 375     }
 376     else
 377     {
 378         sizeTotal.x += 7;
 379         sizeTotal.y += tabSize.y + 7;
 380     }
 381
 382     return sizeTotal;
 383 }
 384
 385 void wxNotebook::AdjustPageSize(wxNotebookPage *page)
 386 {
 387     wxCHECK_RET( page, _T("NULL page in wxNotebook::AdjustPageSize") );
 388
 389     RECT rc;
 390     rc.left =
 391     rc.top = 0;
 392
 393     // get the page size from the notebook size
 394     GetSize((int *)&rc.right, (int *)&rc.bottom);
 395     TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
 396
 397     page->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
 398 }
 399
 400 // ----------------------------------------------------------------------------
 401 // wxNotebook operations
 402 // ----------------------------------------------------------------------------
 403
 404 // remove one page from the notebook, without deleting
 405 wxNotebookPage *wxNotebook::DoRemovePage(int nPage)
 406 {
 407     wxNotebookPage *pageRemoved = wxNotebookBase::DoRemovePage(nPage);
 408     if ( !pageRemoved )
 409         return NULL;
 410
 411     TabCtrl_DeleteItem(m_hwnd, nPage);
 412
 413     if ( m_pages.IsEmpty() )
 414     {
 415         // no selection any more, the notebook becamse empty
 416         m_nSelection = -1;
 417     }
 418     else // notebook still not empty
 419     {
 420         // change the selected page if it was deleted or became invalid
 421         int selNew;
 422         if ( m_nSelection == GetPageCount() )
 423         {
 424             // last page deleted, make the new last page the new selection
 425             selNew = m_nSelection - 1;
 426         }
 427         else if ( nPage <= m_nSelection )
 428         {
 429             // we must show another page, even if it has the same index
 430             selNew = m_nSelection;
 431         }
 432         else // nothing changes for the currently selected page
 433         {
 434             selNew = -1;
 435
 436             // we still must refresh the current page: this needs to be done
 437             // for some unknown reason if the tab control shows the up-down
 438             // control (i.e. when there are too many pages) -- otherwise after
 439             // deleting a page nothing at all is shown
 440             if (m_nSelection >= 0)
 441                 m_pages[m_nSelection]->Refresh();
 442         }
 443
 444         if ( selNew != -1 )
 445         {
 446             // m_nSelection must be always valid so reset it before calling
 447             // SetSelection()
 448             m_nSelection = -1;
 449             SetSelection(selNew);
 450         }
 451     }
 452
 453     return pageRemoved;
 454 }
 455
 456 // remove all pages
 457 bool wxNotebook::DeleteAllPages()
 458 {
 459   int nPageCount = GetPageCount();
 460   int nPage;
 461   for ( nPage = 0; nPage < nPageCount; nPage++ )
 462     delete m_pages[nPage];
 463
 464   m_pages.Clear();
 465
 466   TabCtrl_DeleteAllItems(m_hwnd);
 467
 468   m_nSelection = -1;
 469
 470   return TRUE;
 471 }
 472
 473 // same as AddPage() but does it at given position
 474 bool wxNotebook::InsertPage(int nPage,
 475                             wxNotebookPage *pPage,
 476                             const wxString& strText,
 477                             bool bSelect,
 478                             int imageId)
 479 {
 480     wxCHECK_MSG( pPage != NULL, FALSE, _T("NULL page in wxNotebook::InsertPage") );
 481     wxCHECK_MSG( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), FALSE,
 482                  _T("invalid index in wxNotebook::InsertPage") );
 483
 484     wxASSERT_MSG( pPage->GetParent() == this,
 485                     _T("notebook pages must have notebook as parent") );
 486
 487 #if wxUSE_UXTHEME && wxUSE_UXTHEME_AUTO
 488     static bool g_TestedForTheme = FALSE;
 489     static bool g_UseTheme = FALSE;
 490     if (!g_TestedForTheme)
 491     {
 492         int commCtrlVersion = wxTheApp->GetComCtl32Version() ;
 493
 494         g_UseTheme = (commCtrlVersion >= 600);
 495         g_TestedForTheme = TRUE;
 496     }
 497
 498     // Automatically apply the theme background,
 499     // changing the colour of the panel to match the
 500     // tab page colour. This won't work well with all
 501     // themes but it's a start.
 502     if (g_UseTheme && wxUxThemeEngine::Get() && pPage->IsKindOf(CLASSINFO(wxPanel)))
 503     {
 504         ApplyThemeBackground(pPage, GetThemeBackgroundColour());
 505     }
 506 #endif
 507
 508     // add a new tab to the control
 509     // ----------------------------
 510
 511     // init all fields to 0
 512     TC_ITEM tcItem;
 513     wxZeroMemory(tcItem);
 514
 515     // set the image, if any
 516     if ( imageId != -1 )
 517     {
 518         tcItem.mask |= TCIF_IMAGE;
 519         tcItem.iImage  = imageId;
 520     }
 521
 522     // and the text
 523     if ( !strText.IsEmpty() )
 524     {
 525         tcItem.mask |= TCIF_TEXT;
 526         tcItem.pszText = (wxChar *)strText.c_str(); // const_cast
 527     }
 528
 529     // fit the notebook page to the tab control's display area: this should be
 530     // done before adding it to the notebook or TabCtrl_InsertItem() will
 531     // change the notebooks size itself!
 532     AdjustPageSize(pPage);
 533
 534     // finally do insert it
 535     if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 )
 536     {
 537         wxLogError(wxT("Can't create the notebook page '%s'."), strText.c_str());
 538
 539         return FALSE;
 540     }
 541
 542     // succeeded: save the pointer to the page
 543     m_pages.Insert(pPage, nPage);
 544
 545     // for the first page (only) we need to adjust the size again because the
 546     // notebook size changed: the tabs which hadn't been there before are now
 547     // shown
 548     if ( m_pages.GetCount() == 1 )
 549     {
 550         AdjustPageSize(pPage);
 551     }
 552
 553     // hide the page: unless it is selected, it shouldn't be shown (and if it
 554     // is selected it will be shown later)
 555     HWND hwnd = GetWinHwnd(pPage);
 556     SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);
 557
 558     // this updates internal flag too -- otherwise it would get out of sync
 559     // with the real state
 560     pPage->Show(FALSE);
 561
 562
 563     // now deal with the selection
 564     // ---------------------------
 565
 566     // if the inserted page is before the selected one, we must update the
 567     // index of the selected page
 568     if ( nPage <= m_nSelection )
 569     {
 570         // one extra page added
 571         m_nSelection++;
 572     }
 573
 574     // some page should be selected: either this one or the first one if there
 575     // is still no selection
 576     int selNew = -1;
 577     if ( bSelect )
 578         selNew = nPage;
 579     else if ( m_nSelection == -1 )
 580         selNew = 0;
 581
 582     if ( selNew != -1 )
 583         SetSelection(selNew);
 584
 585     return TRUE;
 586 }
 587
 588 int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
 589 {
 590     TC_HITTESTINFO hitTestInfo;
 591     hitTestInfo.pt.x = pt.x;
 592     hitTestInfo.pt.y = pt.y;
 593     int item = TabCtrl_HitTest(GetHwnd(), &hitTestInfo);
 594
 595     if ( flags )
 596     {
 597         *flags = 0;
 598
 599         if ((hitTestInfo.flags & TCHT_NOWHERE) == TCHT_NOWHERE)
 600             *flags |= wxNB_HITTEST_NOWHERE;
 601         if ((hitTestInfo.flags & TCHT_ONITEM) == TCHT_ONITEM)
 602             *flags |= wxNB_HITTEST_ONITEM;
 603         if ((hitTestInfo.flags & TCHT_ONITEMICON) == TCHT_ONITEMICON)
 604             *flags |= wxNB_HITTEST_ONICON;
 605         if ((hitTestInfo.flags & TCHT_ONITEMLABEL) == TCHT_ONITEMLABEL)
 606             *flags |= wxNB_HITTEST_ONLABEL;
 607     }
 608
 609     return item;
 610 }
 611
 612
 613 // ----------------------------------------------------------------------------
 614 // wxNotebook callbacks
 615 // ----------------------------------------------------------------------------
 616
 617 void wxNotebook::OnSize(wxSizeEvent& event)
 618 {
 619   // fit the notebook page to the tab control's display area
 620   RECT rc;
 621   rc.left = rc.top = 0;
 622   GetSize((int *)&rc.right, (int *)&rc.bottom);
 623
 624   TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
 625
 626   int width = rc.right - rc.left,
 627       height = rc.bottom - rc.top;
 628   size_t nCount = m_pages.Count();
 629   for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
 630     wxNotebookPage *pPage = m_pages[nPage];
 631     pPage->SetSize(rc.left, rc.top, width, height);
 632   }
 633
 634   event.Skip();
 635 }
 636
 637 void wxNotebook::OnSelChange(wxNotebookEvent& event)
 638 {
 639   // is it our tab control?
 640   if ( event.GetEventObject() == this )
 641   {
 642       int sel = event.GetOldSelection();
 643       if ( sel != -1 )
 644         m_pages[sel]->Show(FALSE);
 645
 646       sel = event.GetSelection();
 647       if ( sel != -1 )
 648       {
 649         wxNotebookPage *pPage = m_pages[sel];
 650         pPage->Show(TRUE);
 651         pPage->SetFocus();
 652       }
 653
 654       m_nSelection = sel;
 655   }
 656
 657   // we want to give others a chance to process this message as well
 658   event.Skip();
 659 }
 660
 661 void wxNotebook::OnSetFocus(wxFocusEvent& event)
 662 {
 663     // this function is only called when the focus is explicitly set (i.e. from
 664     // the program) to the notebook - in this case we don't need the
 665     // complicated OnNavigationKey() logic because the programmer knows better
 666     // what [s]he wants
 667
 668     // set focus to the currently selected page if any
 669     if ( m_nSelection != -1 )
 670         m_pages[m_nSelection]->SetFocus();
 671
 672     event.Skip();
 673 }
 674
 675 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 676 {
 677     if ( event.IsWindowChange() ) {
 678         // change pages
 679         AdvanceSelection(event.GetDirection());
 680     }
 681     else {
 682         // we get this event in 2 cases
 683         //
 684         // a) one of our pages might have generated it because the user TABbed
 685         // out from it in which case we should propagate the event upwards and
 686         // our parent will take care of setting the focus to prev/next sibling
 687         //
 688         // or
 689         //
 690         // b) the parent panel wants to give the focus to us so that we
 691         // forward it to our selected page. We can't deal with this in
 692         // OnSetFocus() because we don't know which direction the focus came
 693         // from in this case and so can't choose between setting the focus to
 694         // first or last panel child
 695         wxWindow *parent = GetParent();
 696         // the cast is here to fic a GCC ICE
 697         if ( ((wxWindow*)event.GetEventObject()) == parent )
 698         {
 699             // no, it doesn't come from child, case (b): forward to a page
 700             if ( m_nSelection != -1 )
 701             {
 702                 // so that the page knows that the event comes from it's parent
 703                 // and is being propagated downwards
 704                 event.SetEventObject(this);
 705
 706                 wxWindow *page = m_pages[m_nSelection];
 707                 if ( !page->GetEventHandler()->ProcessEvent(event) )
 708                 {
 709                     page->SetFocus();
 710                 }
 711                 //else: page manages focus inside it itself
 712             }
 713             else
 714             {
 715                 // we have no pages - still have to give focus to _something_
 716                 SetFocus();
 717             }
 718         }
 719         else
 720         {
 721             // it comes from our child, case (a), pass to the parent
 722             if ( parent ) {
 723                 event.SetCurrentFocus(this);
 724                 parent->GetEventHandler()->ProcessEvent(event);
 725             }
 726         }
 727     }
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // wxNotebook base class virtuals
 732 // ----------------------------------------------------------------------------
 733
 734 #if wxUSE_CONSTRAINTS
 735
 736 // override these 2 functions to do nothing: everything is done in OnSize
 737
 738 void wxNotebook::SetConstraintSizes(bool WXUNUSED(recurse))
 739 {
 740   // don't set the sizes of the pages - their correct size is not yet known
 741   wxControl::SetConstraintSizes(FALSE);
 742 }
 743
 744 bool wxNotebook::DoPhase(int WXUNUSED(nPhase))
 745 {
 746   return TRUE;
 747 }
 748
 749 #endif // wxUSE_CONSTRAINTS
 750
 751 // ----------------------------------------------------------------------------
 752 // wxNotebook Windows message handlers
 753 // ----------------------------------------------------------------------------
 754
 755 bool wxNotebook::MSWOnScroll(int orientation, WXWORD nSBCode,
 756                              WXWORD pos, WXHWND control)
 757 {
 758     // don't generate EVT_SCROLLWIN events for the WM_SCROLLs coming from the
 759     // up-down control
 760     if ( control )
 761         return FALSE;
 762
 763     return wxNotebookBase::MSWOnScroll(orientation, nSBCode, pos, control);
 764 }
 765
 766 bool wxNotebook::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM* result)
 767 {
 768   wxNotebookEvent event(wxEVT_NULL, m_windowId);
 769
 770   NMHDR* hdr = (NMHDR *)lParam;
 771   switch ( hdr->code ) {
 772     case TCN_SELCHANGE:
 773       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 774       break;
 775
 776     case TCN_SELCHANGING:
 777       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
 778       break;
 779
 780     default:
 781       return wxControl::MSWOnNotify(idCtrl, lParam, result);
 782   }
 783
 784   event.SetSelection(TabCtrl_GetCurSel(m_hwnd));
 785   event.SetOldSelection(m_nSelection);
 786   event.SetEventObject(this);
 787   event.SetInt(idCtrl);
 788
 789   bool processed = GetEventHandler()->ProcessEvent(event);
 790   *result = !event.IsAllowed();
 791   return processed;
 792 }
 793
 794 // Windows only: attempts to get colour for UX theme page background
 795 wxColour wxNotebook::GetThemeBackgroundColour()
 796 {
 797 #if wxUSE_UXTHEME
 798     if (wxUxThemeEngine::Get())
 799     {
 800         wxUxThemeHandle hTheme(this, L"TAB");
 801         if (hTheme)
 802         {
 803             // This is total guesswork.
 804             // See PlatformSDK\Include\Tmschema.h for values
 805             COLORREF themeColor;
 806             wxUxThemeEngine::Get()->GetThemeColor
 807                                     (
 808                                         hTheme,
 809                                         10 /* TABP_BODY */,
 810                                         1 /* NORMAL */,
 811                                         3821, /* FILLCOLORHINT */
 812                                         & themeColor
 813                                     );
 814
 815             wxColour colour(GetRValue(themeColor), GetGValue(themeColor), GetBValue(themeColor));
 816             return colour;
 817         }
 818     }
 819 #endif // wxUSE_UXTHEME
 820
 821     return GetBackgroundColour();
 822 }
 823
 824 // Windows only: attempts to apply the UX theme page background to this page
 825 #if wxUSE_UXTHEME
 826 void wxNotebook::ApplyThemeBackground(wxWindow* window, const wxColour& colour)
 827 #else
 828 void wxNotebook::ApplyThemeBackground(wxWindow*, const wxColour&)
 829 #endif
 830 {
 831 #if wxUSE_UXTHEME
 832     // Don't set the background for buttons since this will
 833     // switch it into ownerdraw mode
 834     if (window->IsKindOf(CLASSINFO(wxButton)) && !window->IsKindOf(CLASSINFO(wxBitmapButton)))
 835         // This is essential, otherwise you'll see dark grey
 836         // corners in the buttons.
 837         ((wxButton*)window)->wxControl::SetBackgroundColour(colour);
 838     else if (window->IsKindOf(CLASSINFO(wxStaticText)) ||
 839              window->IsKindOf(CLASSINFO(wxStaticBox)) ||
 840              window->IsKindOf(CLASSINFO(wxStaticLine)) ||
 841              window->IsKindOf(CLASSINFO(wxRadioButton)) ||
 842              window->IsKindOf(CLASSINFO(wxRadioBox)) ||
 843              window->IsKindOf(CLASSINFO(wxCheckBox)) ||
 844              window->IsKindOf(CLASSINFO(wxBitmapButton)) ||
 845              window->IsKindOf(CLASSINFO(wxSlider)) ||
 846              window->IsKindOf(CLASSINFO(wxPanel)) ||
 847              (window->IsKindOf(CLASSINFO(wxNotebook)) && (window != this)) ||
 848              window->IsKindOf(CLASSINFO(wxScrolledWindow))
 849         )
 850     {
 851         window->SetBackgroundColour(colour);
 852     }
 853
 854     for ( wxWindowList::compatibility_iterator node = window->GetChildren().GetFirst(); node; node = node->GetNext() )
 855     {
 856         wxWindow *child = node->GetData();
 857         ApplyThemeBackground(child, colour);
 858     }
 859 #endif
 860 }
 861
 862 long wxNotebook::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 863 {
 864     static bool g_TestedForTheme = FALSE;
 865     static bool g_UseTheme = FALSE;
 866     switch ( nMsg )
 867     {
 868         case WM_ERASEBKGND:
 869         {
 870             if (!g_TestedForTheme)
 871             {
 872                 int commCtrlVersion = wxTheApp->GetComCtl32Version() ;
 873
 874                 g_UseTheme = (commCtrlVersion >= 600);
 875                 g_TestedForTheme = TRUE;
 876             }
 877
 878             // If using XP themes, it seems we can get away
 879             // with not drawing a background, which reduces flicker.
 880             if (g_UseTheme)
 881                 return TRUE;
 882         }
 883     }
 884
 885     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 886 }
 887
 888
 889 #endif // wxUSE_NOTEBOOK