src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/statbox.h"
  42     #include "wx/textctrl.h"
  43     #include "wx/settings.h"
  44     #include "wx/dialog.h"
  45     #include "wx/msgdlg.h"
  46     #include "wx/statusbr.h"
  47     #include "wx/dcclient.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_CONSTRAINTS
  51     #include "wx/layout.h"
  52 #endif // wxUSE_CONSTRAINTS
  53
  54 #include "wx/sizer.h"
  55
  56 #if wxUSE_DRAG_AND_DROP
  57     #include "wx/dnd.h"
  58 #endif // wxUSE_DRAG_AND_DROP
  59
  60 #if wxUSE_ACCESSIBILITY
  61     #include "wx/access.h"
  62 #endif
  63
  64 #if wxUSE_HELP
  65     #include "wx/cshelp.h"
  66 #endif // wxUSE_HELP
  67
  68 #if wxUSE_TOOLTIPS
  69     #include "wx/tooltip.h"
  70 #endif // wxUSE_TOOLTIPS
  71
  72 #if wxUSE_CARET
  73     #include "wx/caret.h"
  74 #endif // wxUSE_CARET
  75
  76 // ----------------------------------------------------------------------------
  77 // static data
  78 // ----------------------------------------------------------------------------
  79
  80 #if defined(__WXPM__)
  81 int wxWindowBase::ms_lastControlId = 2000;
  82 #else
  83 int wxWindowBase::ms_lastControlId = -200;
  84 #endif
  85
  86 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  87
  88 // ----------------------------------------------------------------------------
  89 // event table
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  93     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  94     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  95     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  96
  97 #if wxUSE_HELP
  98     EVT_HELP(-1, wxWindowBase::OnHelp)
  99 #endif // wxUSE_HELP
 100
 101 END_EVENT_TABLE()
 102
 103 // ============================================================================
 104 // implementation of the common functionality of the wxWindow class
 105 // ============================================================================
 106
 107 // ----------------------------------------------------------------------------
 108 // initialization
 109 // ----------------------------------------------------------------------------
 110
 111 // the default initialization
 112 void wxWindowBase::InitBase()
 113 {
 114     // no window yet, no parent nor children
 115     m_parent = (wxWindow *)NULL;
 116     m_windowId = -1;
 117     m_children.DeleteContents( FALSE ); // don't auto delete node data
 118
 119     // no constraints on the minimal window size
 120     m_minWidth =
 121     m_minHeight =
 122     m_maxWidth =
 123     m_maxHeight = -1;
 124
 125     // window is created enabled but it's not visible yet
 126     m_isShown = FALSE;
 127     m_isEnabled = TRUE;
 128
 129     // the default event handler is just this window
 130     m_eventHandler = this;
 131
 132 #if wxUSE_VALIDATORS
 133     // no validator
 134     m_windowValidator = (wxValidator *) NULL;
 135 #endif // wxUSE_VALIDATORS
 136
 137     // use the system default colours
 138     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 139     m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 140
 141     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 142     // so the font is *not* really set - but calls to SetFont() later won't do
 143     // anything because m_font appears to be already set!
 144 #ifndef __WXMSW__
 145     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 146 #endif // __WXMSW__
 147
 148     // the colours/fonts are default for now
 149     m_hasBgCol =
 150     m_hasFgCol =
 151     m_hasFont = FALSE;
 152
 153     m_isBeingDeleted = FALSE;
 154
 155     // no style bits
 156     m_exStyle =
 157     m_windowStyle = 0;
 158
 159 #if wxUSE_CONSTRAINTS
 160     // no constraints whatsoever
 161     m_constraints = (wxLayoutConstraints *) NULL;
 162     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 163 #endif // wxUSE_CONSTRAINTS
 164
 165     m_windowSizer = (wxSizer *) NULL;
 166     m_containingSizer = (wxSizer *) NULL;
 167     m_autoLayout = FALSE;
 168
 169 #if wxUSE_DRAG_AND_DROP
 170     m_dropTarget = (wxDropTarget *)NULL;
 171 #endif // wxUSE_DRAG_AND_DROP
 172
 173 #if wxUSE_TOOLTIPS
 174     m_tooltip = (wxToolTip *)NULL;
 175 #endif // wxUSE_TOOLTIPS
 176
 177 #if wxUSE_CARET
 178     m_caret = (wxCaret *)NULL;
 179 #endif // wxUSE_CARET
 180
 181 #if wxUSE_PALETTE
 182     m_hasCustomPalette = FALSE;
 183 #endif // wxUSE_PALETTE
 184
 185 #if wxUSE_ACCESSIBILITY
 186     m_accessible = NULL;
 187 #endif
 188
 189     m_virtualSize = wxDefaultSize;
 190
 191     m_minVirtualWidth =
 192     m_minVirtualHeight =
 193     m_maxVirtualWidth =
 194     m_maxVirtualHeight = -1;
 195
 196     // Whether we're using the current theme for this window (wxGTK only for now)
 197     m_themeEnabled = FALSE;
 198 }
 199
 200 // common part of window creation process
 201 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 202                               wxWindowID id,
 203                               const wxPoint& WXUNUSED(pos),
 204                               const wxSize& WXUNUSED(size),
 205                               long style,
 206                               const wxValidator& validator,
 207                               const wxString& name)
 208 {
 209 #if wxUSE_STATBOX
 210     // wxGTK doesn't allow to create controls with static box as the parent so
 211     // this will result in a crash when the program is ported to wxGTK so warn
 212     // the user about it
 213
 214     // if you get this assert, the correct solution is to create the controls
 215     // as siblings of the static box
 216     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 217                   _T("wxStaticBox can't be used as a window parent!") );
 218 #endif // wxUSE_STATBOX
 219
 220     // ids are limited to 16 bits under MSW so if you care about portability,
 221     // it's not a good idea to use ids out of this range (and negative ids are
 222     // reserved for wxWindows own usage)
 223     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 224                   _T("invalid id value") );
 225
 226     // generate a new id if the user doesn't care about it
 227     m_windowId = id == wxID_ANY ? NewControlId() : id;
 228
 229     SetName(name);
 230     SetWindowStyleFlag(style);
 231     SetParent(parent);
 232
 233 #if wxUSE_VALIDATORS
 234     SetValidator(validator);
 235 #endif // wxUSE_VALIDATORS
 236
 237     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 238     // have it too - like this it's possible to set it only in the top level
 239     // dialog/frame and all children will inherit it by defult
 240     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 241     {
 242         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 243     }
 244
 245     return TRUE;
 246 }
 247
 248 // ----------------------------------------------------------------------------
 249 // destruction
 250 // ----------------------------------------------------------------------------
 251
 252 // common clean up
 253 wxWindowBase::~wxWindowBase()
 254 {
 255     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 256
 257     // FIXME if these 2 cases result from programming errors in the user code
 258     //       we should probably assert here instead of silently fixing them
 259
 260     // Just in case the window has been Closed, but we're then deleting
 261     // immediately: don't leave dangling pointers.
 262     wxPendingDelete.DeleteObject(this);
 263
 264     // Just in case we've loaded a top-level window via LoadNativeDialog but
 265     // we weren't a dialog class
 266     wxTopLevelWindows.DeleteObject(this);
 267
 268     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 269
 270 #if wxUSE_CARET
 271     if ( m_caret )
 272         delete m_caret;
 273 #endif // wxUSE_CARET
 274
 275 #if wxUSE_VALIDATORS
 276     if ( m_windowValidator )
 277         delete m_windowValidator;
 278 #endif // wxUSE_VALIDATORS
 279
 280 #if wxUSE_CONSTRAINTS
 281     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 282     // at deleted windows as they delete themselves.
 283     DeleteRelatedConstraints();
 284
 285     if ( m_constraints )
 286     {
 287         // This removes any dangling pointers to this window in other windows'
 288         // constraintsInvolvedIn lists.
 289         UnsetConstraints(m_constraints);
 290         delete m_constraints;
 291         m_constraints = NULL;
 292     }
 293
 294 #endif // wxUSE_CONSTRAINTS
 295
 296     if ( m_containingSizer )
 297         m_containingSizer->Detach( (wxWindow*)this );
 298
 299     if ( m_windowSizer )
 300         delete m_windowSizer;
 301
 302 #if wxUSE_DRAG_AND_DROP
 303     if ( m_dropTarget )
 304         delete m_dropTarget;
 305 #endif // wxUSE_DRAG_AND_DROP
 306
 307 #if wxUSE_TOOLTIPS
 308     if ( m_tooltip )
 309         delete m_tooltip;
 310 #endif // wxUSE_TOOLTIPS
 311
 312 #if wxUSE_ACCESSIBILITY
 313     if ( m_accessible )
 314         delete m_accessible;
 315 #endif
 316
 317     // reset the dangling pointer our parent window may keep to us
 318     if ( m_parent && m_parent->GetDefaultItem() == this )
 319     {
 320         m_parent->SetDefaultItem(NULL);
 321     }
 322 }
 323
 324 bool wxWindowBase::Destroy()
 325 {
 326     delete this;
 327
 328     return TRUE;
 329 }
 330
 331 bool wxWindowBase::Close(bool force)
 332 {
 333     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 334     event.SetEventObject(this);
 335 #if WXWIN_COMPATIBILITY
 336     event.SetForce(force);
 337 #endif // WXWIN_COMPATIBILITY
 338     event.SetCanVeto(!force);
 339
 340     // return FALSE if window wasn't closed because the application vetoed the
 341     // close event
 342     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 343 }
 344
 345 bool wxWindowBase::DestroyChildren()
 346 {
 347     wxWindowList::Node *node;
 348     for ( ;; )
 349     {
 350         // we iterate until the list becomes empty
 351         node = GetChildren().GetFirst();
 352         if ( !node )
 353             break;
 354
 355         wxWindow *child = node->GetData();
 356
 357         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 358
 359         child->Show(FALSE);
 360         delete child;
 361
 362         wxASSERT_MSG( !GetChildren().Find(child),
 363                       wxT("child didn't remove itself using RemoveChild()") );
 364     }
 365
 366     return TRUE;
 367 }
 368
 369 // ----------------------------------------------------------------------------
 370 // size/position related methods
 371 // ----------------------------------------------------------------------------
 372
 373 // centre the window with respect to its parent in either (or both) directions
 374 void wxWindowBase::Centre(int direction)
 375 {
 376     // the position/size of the parent window or of the entire screen
 377     wxPoint posParent;
 378     int widthParent, heightParent;
 379
 380     wxWindow *parent = NULL;
 381
 382     if ( !(direction & wxCENTRE_ON_SCREEN) )
 383     {
 384         // find the parent to centre this window on: it should be the
 385         // immediate parent for the controls but the top level parent for the
 386         // top level windows (like dialogs)
 387         parent = GetParent();
 388         if ( IsTopLevel() )
 389         {
 390             while ( parent && !parent->IsTopLevel() )
 391             {
 392                 parent = parent->GetParent();
 393             }
 394         }
 395
 396         // there is no wxTopLevelWindow under wxMotif yet
 397 #ifndef __WXMOTIF__
 398         // we shouldn't center the dialog on the iconized window: under
 399         // Windows, for example, this places it completely off the screen
 400         if ( parent )
 401         {
 402             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 403             if ( winTop && winTop->IsIconized() )
 404             {
 405                 parent = NULL;
 406             }
 407         }
 408 #endif // __WXMOTIF__
 409
 410         // did we find the parent?
 411         if ( !parent )
 412         {
 413             // no other choice
 414             direction |= wxCENTRE_ON_SCREEN;
 415         }
 416     }
 417
 418     if ( direction & wxCENTRE_ON_SCREEN )
 419     {
 420         // centre with respect to the whole screen
 421         wxDisplaySize(&widthParent, &heightParent);
 422     }
 423     else
 424     {
 425         if ( IsTopLevel() )
 426         {
 427             // centre on the parent
 428             parent->GetSize(&widthParent, &heightParent);
 429
 430             // adjust to the parents position
 431             posParent = parent->GetPosition();
 432         }
 433         else
 434         {
 435             // centre inside the parents client rectangle
 436             parent->GetClientSize(&widthParent, &heightParent);
 437         }
 438     }
 439
 440     int width, height;
 441     GetSize(&width, &height);
 442
 443     int xNew = -1,
 444         yNew = -1;
 445
 446     if ( direction & wxHORIZONTAL )
 447         xNew = (widthParent - width)/2;
 448
 449     if ( direction & wxVERTICAL )
 450         yNew = (heightParent - height)/2;
 451
 452     xNew += posParent.x;
 453     yNew += posParent.y;
 454
 455     // Base size of the visible dimensions of the display
 456     // to take into account the taskbar
 457     wxRect rect = wxGetClientDisplayRect();
 458     wxSize size (rect.width,rect.height);
 459
 460     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 461     //     but it may mean that the window is placed on other than the main
 462     //     display. Therefore we only make sure centered window is on the main display
 463     //     if the parent is at least partially present here.
 464     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 465     {
 466         if (xNew < 0)
 467             xNew = 0;
 468         else if (xNew+width > size.x)
 469             xNew = size.x-width-1;
 470     }
 471     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 472     {
 473         if (yNew+height > size.y)
 474             yNew = size.y-height-1;
 475
 476         // Make certain that the title bar is initially visible
 477         // always, even if this would push the bottom of the
 478         // dialog of the visible area of the display
 479         if (yNew < 0)
 480             yNew = 0;
 481     }
 482
 483     // move the window to this position (keeping the old size but using
 484     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 485     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 486 }
 487
 488 // fits the window around the children
 489 void wxWindowBase::Fit()
 490 {
 491     if ( GetChildren().GetCount() > 0 )
 492     {
 493         SetClientSize(DoGetBestSize());
 494     }
 495     //else: do nothing if we have no children
 496 }
 497
 498 // fits virtual size (ie. scrolled area etc.) around children
 499 void wxWindowBase::FitInside()
 500 {
 501     if ( GetChildren().GetCount() > 0 )
 502     {
 503         SetVirtualSize( GetBestVirtualSize() );
 504     }
 505 }
 506
 507 // return the size best suited for the current window
 508 wxSize wxWindowBase::DoGetBestSize() const
 509 {
 510     if ( m_windowSizer )
 511     {
 512         return m_windowSizer->GetMinSize();
 513     }
 514 #if wxUSE_CONSTRAINTS
 515     else if ( m_constraints )
 516     {
 517         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 518
 519         // our minimal acceptable size is such that all our windows fit inside
 520         int maxX = 0,
 521             maxY = 0;
 522
 523         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 524               node;
 525               node = node->GetNext() )
 526         {
 527             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 528             if ( !c )
 529             {
 530                 // it's not normal that we have an unconstrained child, but
 531                 // what can we do about it?
 532                 continue;
 533             }
 534
 535             int x = c->right.GetValue(),
 536                 y = c->bottom.GetValue();
 537
 538             if ( x > maxX )
 539                 maxX = x;
 540
 541             if ( y > maxY )
 542                 maxY = y;
 543
 544             // TODO: we must calculate the overlaps somehow, otherwise we
 545             //       will never return a size bigger than the current one :-(
 546         }
 547
 548         return wxSize(maxX, maxY);
 549     }
 550 #endif // wxUSE_CONSTRAINTS
 551     else if ( GetChildren().GetCount() > 0 )
 552     {
 553         // our minimal acceptable size is such that all our windows fit inside
 554         int maxX = 0,
 555             maxY = 0;
 556
 557         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 558               node;
 559               node = node->GetNext() )
 560         {
 561             wxWindow *win = node->GetData();
 562             if ( win->IsTopLevel()
 563 #if wxUSE_STATUSBAR
 564                     || wxDynamicCast(win, wxStatusBar)
 565 #endif // wxUSE_STATUSBAR
 566                )
 567             {
 568                 // dialogs and frames lie in different top level windows -
 569                 // don't deal with them here; as for the status bars, they
 570                 // don't lie in the client area at all
 571                 continue;
 572             }
 573
 574             int wx, wy, ww, wh;
 575             win->GetPosition(&wx, &wy);
 576
 577             // if the window hadn't been positioned yet, assume that it is in
 578             // the origin
 579             if ( wx == -1 )
 580                 wx = 0;
 581             if ( wy == -1 )
 582                 wy = 0;
 583
 584             win->GetSize(&ww, &wh);
 585             if ( wx + ww > maxX )
 586                 maxX = wx + ww;
 587             if ( wy + wh > maxY )
 588                 maxY = wy + wh;
 589         }
 590
 591         // for compatibility with the old versions and because it really looks
 592         // slightly more pretty like this, add a pad
 593         maxX += 7;
 594         maxY += 14;
 595
 596         return wxSize(maxX, maxY);
 597     }
 598     else
 599     {
 600         // for a generic window there is no natural best size - just use the
 601         // current one
 602         return GetSize();
 603     }
 604 }
 605
 606 // by default the origin is not shifted
 607 wxPoint wxWindowBase::GetClientAreaOrigin() const
 608 {
 609     return wxPoint(0, 0);
 610 }
 611
 612 // set the min/max size of the window
 613 void wxWindowBase::SetSizeHints(int minW, int minH,
 614                                 int maxW, int maxH,
 615                                 int WXUNUSED(incW), int WXUNUSED(incH))
 616 {
 617     // setting min width greater than max width leads to infinite loops under
 618     // X11 and generally doesn't make any sense, so don't allow it
 619     wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
 620                     (minH == -1 || maxH == -1 || minH <= maxH),
 621                  _T("min width/height must be less than max width/height!") );
 622
 623     m_minWidth = minW;
 624     m_maxWidth = maxW;
 625     m_minHeight = minH;
 626     m_maxHeight = maxH;
 627 }
 628
 629 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 630                                         int maxW, int maxH )
 631 {
 632     m_minVirtualWidth = minW;
 633     m_maxVirtualWidth = maxW;
 634     m_minVirtualHeight = minH;
 635     m_maxVirtualHeight = maxH;
 636 }
 637
 638 void wxWindowBase::DoSetVirtualSize( int x, int y )
 639 {
 640     if ( m_minVirtualWidth != -1 && m_minVirtualWidth > x )
 641         x = m_minVirtualWidth;
 642     if ( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )
 643         x = m_maxVirtualWidth;
 644     if ( m_minVirtualHeight != -1 && m_minVirtualHeight > y )
 645         y = m_minVirtualHeight;
 646     if ( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y )
 647         y = m_maxVirtualHeight;
 648
 649     m_virtualSize = wxSize(x, y);
 650 }
 651
 652 wxSize wxWindowBase::DoGetVirtualSize() const
 653 {
 654     wxSize  s( GetClientSize() );
 655
 656     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 657                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 658 }
 659
 660 // ----------------------------------------------------------------------------
 661 // show/hide/enable/disable the window
 662 // ----------------------------------------------------------------------------
 663
 664 bool wxWindowBase::Show(bool show)
 665 {
 666     if ( show != m_isShown )
 667     {
 668         m_isShown = show;
 669
 670         return TRUE;
 671     }
 672     else
 673     {
 674         return FALSE;
 675     }
 676 }
 677
 678 bool wxWindowBase::Enable(bool enable)
 679 {
 680     if ( enable != m_isEnabled )
 681     {
 682         m_isEnabled = enable;
 683
 684         return TRUE;
 685     }
 686     else
 687     {
 688         return FALSE;
 689     }
 690 }
 691 // ----------------------------------------------------------------------------
 692 // RTTI
 693 // ----------------------------------------------------------------------------
 694
 695 bool wxWindowBase::IsTopLevel() const
 696 {
 697     return FALSE;
 698 }
 699
 700 // ----------------------------------------------------------------------------
 701 // reparenting the window
 702 // ----------------------------------------------------------------------------
 703
 704 void wxWindowBase::AddChild(wxWindowBase *child)
 705 {
 706     wxCHECK_RET( child, wxT("can't add a NULL child") );
 707
 708     // this should never happen and it will lead to a crash later if it does
 709     // because RemoveChild() will remove only one node from the children list
 710     // and the other(s) one(s) will be left with dangling pointers in them
 711     wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
 712
 713     GetChildren().Append(child);
 714     child->SetParent(this);
 715 }
 716
 717 void wxWindowBase::RemoveChild(wxWindowBase *child)
 718 {
 719     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 720
 721     GetChildren().DeleteObject(child);
 722     child->SetParent((wxWindow *)NULL);
 723 }
 724
 725 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 726 {
 727     wxWindow *oldParent = GetParent();
 728     if ( newParent == oldParent )
 729     {
 730         // nothing done
 731         return FALSE;
 732     }
 733
 734     // unlink this window from the existing parent.
 735     if ( oldParent )
 736     {
 737         oldParent->RemoveChild(this);
 738     }
 739     else
 740     {
 741         wxTopLevelWindows.DeleteObject(this);
 742     }
 743
 744     // add it to the new one
 745     if ( newParent )
 746     {
 747         newParent->AddChild(this);
 748     }
 749     else
 750     {
 751         wxTopLevelWindows.Append(this);
 752     }
 753
 754     return TRUE;
 755 }
 756
 757 // ----------------------------------------------------------------------------
 758 // event handler stuff
 759 // ----------------------------------------------------------------------------
 760
 761 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 762 {
 763     wxEvtHandler *handlerOld = GetEventHandler();
 764
 765     handler->SetNextHandler(handlerOld);
 766
 767     if ( handlerOld )
 768         GetEventHandler()->SetPreviousHandler(handler);
 769
 770     SetEventHandler(handler);
 771 }
 772
 773 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 774 {
 775     wxEvtHandler *handlerA = GetEventHandler();
 776     if ( handlerA )
 777     {
 778         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 779         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 780
 781         if ( handlerB )
 782             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 783         SetEventHandler(handlerB);
 784
 785         if ( deleteHandler )
 786         {
 787             delete handlerA;
 788             handlerA = (wxEvtHandler *)NULL;
 789         }
 790     }
 791
 792     return handlerA;
 793 }
 794
 795 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 796 {
 797     wxCHECK_MSG( handler, FALSE, _T("RemoveEventHandler(NULL) called") );
 798
 799     wxEvtHandler *handlerPrev = NULL,
 800                  *handlerCur = GetEventHandler();
 801     while ( handlerCur )
 802     {
 803         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 804
 805         if ( handlerCur == handler )
 806         {
 807             if ( handlerPrev )
 808             {
 809                 handlerPrev->SetNextHandler(handlerNext);
 810             }
 811             else
 812             {
 813                 SetEventHandler(handlerNext);
 814             }
 815
 816             if ( handlerNext )
 817             {
 818                 handlerNext->SetPreviousHandler ( handlerPrev );
 819             }
 820             handler->SetNextHandler(NULL);
 821
 822             return TRUE;
 823         }
 824
 825         handlerPrev = handlerCur;
 826         handlerCur = handlerNext;
 827     }
 828
 829     wxFAIL_MSG( _T("where has the event handler gone?") );
 830
 831     return FALSE;
 832 }
 833
 834 // ----------------------------------------------------------------------------
 835 // cursors, fonts &c
 836 // ----------------------------------------------------------------------------
 837
 838 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 839 {
 840     if ( !colour.Ok() || (colour == m_backgroundColour) )
 841         return FALSE;
 842
 843     m_backgroundColour = colour;
 844
 845     m_hasBgCol = TRUE;
 846
 847     return TRUE;
 848 }
 849
 850 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 851 {
 852     if ( !colour.Ok() || (colour == m_foregroundColour) )
 853         return FALSE;
 854
 855     m_foregroundColour = colour;
 856
 857     m_hasFgCol = TRUE;
 858
 859     return TRUE;
 860 }
 861
 862 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 863 {
 864     // setting an invalid cursor is ok, it means that we don't have any special
 865     // cursor
 866     if ( m_cursor == cursor )
 867     {
 868         // no change
 869         return FALSE;
 870     }
 871
 872     m_cursor = cursor;
 873
 874     return TRUE;
 875 }
 876
 877 bool wxWindowBase::SetFont(const wxFont& font)
 878 {
 879     // don't try to set invalid font, always fall back to the default
 880     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 881
 882     if ( fontOk == m_font )
 883     {
 884         // no change
 885         return FALSE;
 886     }
 887
 888     m_font = fontOk;
 889
 890     m_hasFont = TRUE;
 891
 892     return TRUE;
 893 }
 894
 895 #if wxUSE_PALETTE
 896
 897 void wxWindowBase::SetPalette(const wxPalette& pal)
 898 {
 899     m_hasCustomPalette = TRUE;
 900     m_palette = pal;
 901
 902     // VZ: can anyone explain me what do we do here?
 903     wxWindowDC d((wxWindow *) this);
 904     d.SetPalette(pal);
 905 }
 906
 907 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
 908 {
 909     wxWindow *win = (wxWindow *)this;
 910     while ( win && !win->HasCustomPalette() )
 911     {
 912         win = win->GetParent();
 913     }
 914
 915     return win;
 916 }
 917
 918 #endif // wxUSE_PALETTE
 919
 920 #if wxUSE_CARET
 921 void wxWindowBase::SetCaret(wxCaret *caret)
 922 {
 923     if ( m_caret )
 924     {
 925         delete m_caret;
 926     }
 927
 928     m_caret = caret;
 929
 930     if ( m_caret )
 931     {
 932         wxASSERT_MSG( m_caret->GetWindow() == this,
 933                       wxT("caret should be created associated to this window") );
 934     }
 935 }
 936 #endif // wxUSE_CARET
 937
 938 #if wxUSE_VALIDATORS
 939 // ----------------------------------------------------------------------------
 940 // validators
 941 // ----------------------------------------------------------------------------
 942
 943 void wxWindowBase::SetValidator(const wxValidator& validator)
 944 {
 945     if ( m_windowValidator )
 946         delete m_windowValidator;
 947
 948     m_windowValidator = (wxValidator *)validator.Clone();
 949
 950     if ( m_windowValidator )
 951         m_windowValidator->SetWindow(this) ;
 952 }
 953 #endif // wxUSE_VALIDATORS
 954
 955 // ----------------------------------------------------------------------------
 956 // update region stuff
 957 // ----------------------------------------------------------------------------
 958
 959 wxRect wxWindowBase::GetUpdateClientRect() const
 960 {
 961     wxRegion rgnUpdate = GetUpdateRegion();
 962     rgnUpdate.Intersect(GetClientRect());
 963     wxRect rectUpdate = rgnUpdate.GetBox();
 964     wxPoint ptOrigin = GetClientAreaOrigin();
 965     rectUpdate.x -= ptOrigin.x;
 966     rectUpdate.y -= ptOrigin.y;
 967
 968     return rectUpdate;
 969 }
 970
 971 bool wxWindowBase::IsExposed(int x, int y) const
 972 {
 973     return m_updateRegion.Contains(x, y) != wxOutRegion;
 974 }
 975
 976 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
 977 {
 978     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
 979 }
 980
 981 // ----------------------------------------------------------------------------
 982 // find child window by id or name
 983 // ----------------------------------------------------------------------------
 984
 985 wxWindow *wxWindowBase::FindWindow( long id )
 986 {
 987     if ( id == m_windowId )
 988         return (wxWindow *)this;
 989
 990     wxWindowBase *res = (wxWindow *)NULL;
 991     wxWindowList::Node *node;
 992     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 993     {
 994         wxWindowBase *child = node->GetData();
 995         res = child->FindWindow( id );
 996     }
 997
 998     return (wxWindow *)res;
 999 }
1000
1001 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1002 {
1003     if ( name == m_windowName )
1004         return (wxWindow *)this;
1005
1006     wxWindowBase *res = (wxWindow *)NULL;
1007     wxWindowList::Node *node;
1008     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1009     {
1010         wxWindow *child = node->GetData();
1011         res = child->FindWindow(name);
1012     }
1013
1014     return (wxWindow *)res;
1015 }
1016
1017
1018 // find any window by id or name or label: If parent is non-NULL, look through
1019 // children for a label or title matching the specified string. If NULL, look
1020 // through all top-level windows.
1021 //
1022 // to avoid duplicating code we reuse the same helper function but with
1023 // different comparators
1024
1025 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1026                                 const wxString& label, long id);
1027
1028 static
1029 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1030                            long WXUNUSED(id))
1031 {
1032     return win->GetLabel() == label;
1033 }
1034
1035 static
1036 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1037                           long WXUNUSED(id))
1038 {
1039     return win->GetName() == label;
1040 }
1041
1042 static
1043 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1044                         long id)
1045 {
1046     return win->GetId() == id;
1047 }
1048
1049 // recursive helper for the FindWindowByXXX() functions
1050 static
1051 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1052                                   const wxString& label,
1053                                   long id,
1054                                   wxFindWindowCmp cmp)
1055 {
1056     if ( parent )
1057     {
1058         // see if this is the one we're looking for
1059         if ( (*cmp)(parent, label, id) )
1060             return (wxWindow *)parent;
1061
1062         // It wasn't, so check all its children
1063         for ( wxWindowList::Node * node = parent->GetChildren().GetFirst();
1064               node;
1065               node = node->GetNext() )
1066         {
1067             // recursively check each child
1068             wxWindow *win = (wxWindow *)node->GetData();
1069             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1070             if (retwin)
1071                 return retwin;
1072         }
1073     }
1074
1075     // Not found
1076     return NULL;
1077 }
1078
1079 // helper for FindWindowByXXX()
1080 static
1081 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1082                              const wxString& label,
1083                              long id,
1084                              wxFindWindowCmp cmp)
1085 {
1086     if ( parent )
1087     {
1088         // just check parent and all its children
1089         return wxFindWindowRecursively(parent, label, id, cmp);
1090     }
1091
1092     // start at very top of wx's windows
1093     for ( wxWindowList::Node * node = wxTopLevelWindows.GetFirst();
1094           node;
1095           node = node->GetNext() )
1096     {
1097         // recursively check each window & its children
1098         wxWindow *win = node->GetData();
1099         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1100         if (retwin)
1101             return retwin;
1102     }
1103
1104     return NULL;
1105 }
1106
1107 /* static */
1108 wxWindow *
1109 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1110 {
1111     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1112 }
1113
1114 /* static */
1115 wxWindow *
1116 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1117 {
1118     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1119
1120     if ( !win )
1121     {
1122         // fall back to the label
1123         win = FindWindowByLabel(title, parent);
1124     }
1125
1126     return win;
1127 }
1128
1129 /* static */
1130 wxWindow *
1131 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1132 {
1133     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1134 }
1135
1136 // ----------------------------------------------------------------------------
1137 // dialog oriented functions
1138 // ----------------------------------------------------------------------------
1139
1140 void wxWindowBase::MakeModal(bool modal)
1141 {
1142     // Disable all other windows
1143     if ( IsTopLevel() )
1144     {
1145         wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
1146         while (node)
1147         {
1148             wxWindow *win = node->GetData();
1149             if (win != this)
1150                 win->Enable(!modal);
1151
1152             node = node->GetNext();
1153         }
1154     }
1155 }
1156
1157 bool wxWindowBase::Validate()
1158 {
1159 #if wxUSE_VALIDATORS
1160     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1161
1162     wxWindowList::Node *node;
1163     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1164     {
1165         wxWindowBase *child = node->GetData();
1166         wxValidator *validator = child->GetValidator();
1167         if ( validator && !validator->Validate((wxWindow *)this) )
1168         {
1169             return FALSE;
1170         }
1171
1172         if ( recurse && !child->Validate() )
1173         {
1174             return FALSE;
1175         }
1176     }
1177 #endif // wxUSE_VALIDATORS
1178
1179     return TRUE;
1180 }
1181
1182 bool wxWindowBase::TransferDataToWindow()
1183 {
1184 #if wxUSE_VALIDATORS
1185     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1186
1187     wxWindowList::Node *node;
1188     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1189     {
1190         wxWindowBase *child = node->GetData();
1191         wxValidator *validator = child->GetValidator();
1192         if ( validator && !validator->TransferToWindow() )
1193         {
1194             wxLogWarning(_("Could not transfer data to window"));
1195 #if wxUSE_LOG
1196             wxLog::FlushActive();
1197 #endif // wxUSE_LOG
1198
1199             return FALSE;
1200         }
1201
1202         if ( recurse )
1203         {
1204             if ( !child->TransferDataToWindow() )
1205             {
1206                 // warning already given
1207                 return FALSE;
1208             }
1209         }
1210     }
1211 #endif // wxUSE_VALIDATORS
1212
1213     return TRUE;
1214 }
1215
1216 bool wxWindowBase::TransferDataFromWindow()
1217 {
1218 #if wxUSE_VALIDATORS
1219     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1220
1221     wxWindowList::Node *node;
1222     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1223     {
1224         wxWindow *child = node->GetData();
1225         wxValidator *validator = child->GetValidator();
1226         if ( validator && !validator->TransferFromWindow() )
1227         {
1228             // nop warning here because the application is supposed to give
1229             // one itself - we don't know here what might have gone wrongly
1230
1231             return FALSE;
1232         }
1233
1234         if ( recurse )
1235         {
1236             if ( !child->TransferDataFromWindow() )
1237             {
1238                 // warning already given
1239                 return FALSE;
1240             }
1241         }
1242     }
1243 #endif // wxUSE_VALIDATORS
1244
1245     return TRUE;
1246 }
1247
1248 void wxWindowBase::InitDialog()
1249 {
1250     wxInitDialogEvent event(GetId());
1251     event.SetEventObject( this );
1252     GetEventHandler()->ProcessEvent(event);
1253 }
1254
1255 // ----------------------------------------------------------------------------
1256 // context-sensitive help support
1257 // ----------------------------------------------------------------------------
1258
1259 #if wxUSE_HELP
1260
1261 // associate this help text with this window
1262 void wxWindowBase::SetHelpText(const wxString& text)
1263 {
1264     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1265     if ( helpProvider )
1266     {
1267         helpProvider->AddHelp(this, text);
1268     }
1269 }
1270
1271 // associate this help text with all windows with the same id as this
1272 // one
1273 void wxWindowBase::SetHelpTextForId(const wxString& text)
1274 {
1275     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1276     if ( helpProvider )
1277     {
1278         helpProvider->AddHelp(GetId(), text);
1279     }
1280 }
1281
1282 // get the help string associated with this window (may be empty)
1283 wxString wxWindowBase::GetHelpText() const
1284 {
1285     wxString text;
1286     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1287     if ( helpProvider )
1288     {
1289         text = helpProvider->GetHelp(this);
1290     }
1291
1292     return text;
1293 }
1294
1295 // show help for this window
1296 void wxWindowBase::OnHelp(wxHelpEvent& event)
1297 {
1298     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1299     if ( helpProvider )
1300     {
1301         if ( helpProvider->ShowHelp(this) )
1302         {
1303             // skip the event.Skip() below
1304             return;
1305         }
1306     }
1307
1308     event.Skip();
1309 }
1310
1311 #endif // wxUSE_HELP
1312
1313 // ----------------------------------------------------------------------------
1314 // tooltipsroot.Replace("\\", "/");
1315 // ----------------------------------------------------------------------------
1316
1317 #if wxUSE_TOOLTIPS
1318
1319 void wxWindowBase::SetToolTip( const wxString &tip )
1320 {
1321     // don't create the new tooltip if we already have one
1322     if ( m_tooltip )
1323     {
1324         m_tooltip->SetTip( tip );
1325     }
1326     else
1327     {
1328         SetToolTip( new wxToolTip( tip ) );
1329     }
1330
1331     // setting empty tooltip text does not remove the tooltip any more - use
1332     // SetToolTip((wxToolTip *)NULL) for this
1333 }
1334
1335 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1336 {
1337     if ( m_tooltip )
1338         delete m_tooltip;
1339
1340     m_tooltip = tooltip;
1341 }
1342
1343 #endif // wxUSE_TOOLTIPS
1344
1345 // ----------------------------------------------------------------------------
1346 // constraints and sizers
1347 // ----------------------------------------------------------------------------
1348
1349 #if wxUSE_CONSTRAINTS
1350
1351 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1352 {
1353     if ( m_constraints )
1354     {
1355         UnsetConstraints(m_constraints);
1356         delete m_constraints;
1357     }
1358     m_constraints = constraints;
1359     if ( m_constraints )
1360     {
1361         // Make sure other windows know they're part of a 'meaningful relationship'
1362         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1363             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1364         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1365             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1366         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1367             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1368         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1369             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1370         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1371             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1372         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1373             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1374         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1375             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1376         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1377             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1378     }
1379 }
1380
1381 // This removes any dangling pointers to this window in other windows'
1382 // constraintsInvolvedIn lists.
1383 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1384 {
1385     if ( c )
1386     {
1387         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1388             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1389         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1390             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1391         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1392             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1393         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1394             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1395         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1396             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1397         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1398             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1399         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1400             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1401         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1402             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1403     }
1404 }
1405
1406 // Back-pointer to other windows we're involved with, so if we delete this
1407 // window, we must delete any constraints we're involved with.
1408 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1409 {
1410     if ( !m_constraintsInvolvedIn )
1411         m_constraintsInvolvedIn = new wxWindowList;
1412     if ( !m_constraintsInvolvedIn->Find(otherWin) )
1413         m_constraintsInvolvedIn->Append(otherWin);
1414 }
1415
1416 // REMOVE back-pointer to other windows we're involved with.
1417 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1418 {
1419     if ( m_constraintsInvolvedIn )
1420         m_constraintsInvolvedIn->DeleteObject(otherWin);
1421 }
1422
1423 // Reset any constraints that mention this window
1424 void wxWindowBase::DeleteRelatedConstraints()
1425 {
1426     if ( m_constraintsInvolvedIn )
1427     {
1428         wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
1429         while (node)
1430         {
1431             wxWindow *win = node->GetData();
1432             wxLayoutConstraints *constr = win->GetConstraints();
1433
1434             // Reset any constraints involving this window
1435             if ( constr )
1436             {
1437                 constr->left.ResetIfWin(this);
1438                 constr->top.ResetIfWin(this);
1439                 constr->right.ResetIfWin(this);
1440                 constr->bottom.ResetIfWin(this);
1441                 constr->width.ResetIfWin(this);
1442                 constr->height.ResetIfWin(this);
1443                 constr->centreX.ResetIfWin(this);
1444                 constr->centreY.ResetIfWin(this);
1445             }
1446
1447             wxWindowList::Node *next = node->GetNext();
1448             delete node;
1449             node = next;
1450         }
1451
1452         delete m_constraintsInvolvedIn;
1453         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1454     }
1455 }
1456
1457 #endif // wxUSE_CONSTRAINTS
1458
1459 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1460 {
1461     if ( deleteOld )
1462         delete m_windowSizer;
1463
1464     m_windowSizer = sizer;
1465
1466     SetAutoLayout( sizer != NULL );
1467 }
1468
1469 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1470 {
1471     SetSizer( sizer, deleteOld );
1472     sizer->SetSizeHints( (wxWindow*) this );
1473 }
1474
1475 #if wxUSE_CONSTRAINTS
1476
1477 void wxWindowBase::SatisfyConstraints()
1478 {
1479     wxLayoutConstraints *constr = GetConstraints();
1480     bool wasOk = constr && constr->AreSatisfied();
1481
1482     ResetConstraints();   // Mark all constraints as unevaluated
1483
1484     int noChanges = 1;
1485
1486     // if we're a top level panel (i.e. our parent is frame/dialog), our
1487     // own constraints will never be satisfied any more unless we do it
1488     // here
1489     if ( wasOk )
1490     {
1491         while ( noChanges > 0 )
1492         {
1493             LayoutPhase1(&noChanges);
1494         }
1495     }
1496
1497     LayoutPhase2(&noChanges);
1498 }
1499
1500 #endif // wxUSE_CONSTRAINTS
1501
1502 bool wxWindowBase::Layout()
1503 {
1504     // If there is a sizer, use it instead of the constraints
1505     if ( GetSizer() )
1506     {
1507         int w, h;
1508         GetVirtualSize(&w, &h);
1509         GetSizer()->SetDimension( 0, 0, w, h );
1510     }
1511 #if wxUSE_CONSTRAINTS
1512     else
1513     {
1514         SatisfyConstraints(); // Find the right constraints values
1515         SetConstraintSizes(); // Recursively set the real window sizes
1516     }
1517 #endif
1518
1519     return TRUE;
1520 }
1521
1522 #if wxUSE_CONSTRAINTS
1523
1524 // first phase of the constraints evaluation: set our own constraints
1525 bool wxWindowBase::LayoutPhase1(int *noChanges)
1526 {
1527     wxLayoutConstraints *constr = GetConstraints();
1528
1529     return !constr || constr->SatisfyConstraints(this, noChanges);
1530 }
1531
1532 // second phase: set the constraints for our children
1533 bool wxWindowBase::LayoutPhase2(int *noChanges)
1534 {
1535     *noChanges = 0;
1536
1537     // Layout children
1538     DoPhase(1);
1539
1540     // Layout grand children
1541     DoPhase(2);
1542
1543     return TRUE;
1544 }
1545
1546 // Do a phase of evaluating child constraints
1547 bool wxWindowBase::DoPhase(int phase)
1548 {
1549     // the list containing the children for which the constraints are already
1550     // set correctly
1551     wxWindowList succeeded;
1552
1553     // the max number of iterations we loop before concluding that we can't set
1554     // the constraints
1555     static const int maxIterations = 500;
1556
1557     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1558     {
1559         int noChanges = 0;
1560
1561         // loop over all children setting their constraints
1562         for ( wxWindowList::Node *node = GetChildren().GetFirst();
1563               node;
1564               node = node->GetNext() )
1565         {
1566             wxWindow *child = node->GetData();
1567             if ( child->IsTopLevel() )
1568             {
1569                 // top level children are not inside our client area
1570                 continue;
1571             }
1572
1573             if ( !child->GetConstraints() || succeeded.Find(child) )
1574             {
1575                 // this one is either already ok or nothing we can do about it
1576                 continue;
1577             }
1578
1579             int tempNoChanges = 0;
1580             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1581                                       : child->LayoutPhase2(&tempNoChanges);
1582             noChanges += tempNoChanges;
1583
1584             if ( success )
1585             {
1586                 succeeded.Append(child);
1587             }
1588         }
1589
1590         if ( !noChanges )
1591         {
1592             // constraints are set
1593             break;
1594         }
1595     }
1596
1597     return TRUE;
1598 }
1599
1600 void wxWindowBase::ResetConstraints()
1601 {
1602     wxLayoutConstraints *constr = GetConstraints();
1603     if ( constr )
1604     {
1605         constr->left.SetDone(FALSE);
1606         constr->top.SetDone(FALSE);
1607         constr->right.SetDone(FALSE);
1608         constr->bottom.SetDone(FALSE);
1609         constr->width.SetDone(FALSE);
1610         constr->height.SetDone(FALSE);
1611         constr->centreX.SetDone(FALSE);
1612         constr->centreY.SetDone(FALSE);
1613     }
1614
1615     wxWindowList::Node *node = GetChildren().GetFirst();
1616     while (node)
1617     {
1618         wxWindow *win = node->GetData();
1619         if ( !win->IsTopLevel() )
1620             win->ResetConstraints();
1621         node = node->GetNext();
1622     }
1623 }
1624
1625 // Need to distinguish between setting the 'fake' size for windows and sizers,
1626 // and setting the real values.
1627 void wxWindowBase::SetConstraintSizes(bool recurse)
1628 {
1629     wxLayoutConstraints *constr = GetConstraints();
1630     if ( constr && constr->AreSatisfied() )
1631     {
1632         int x = constr->left.GetValue();
1633         int y = constr->top.GetValue();
1634         int w = constr->width.GetValue();
1635         int h = constr->height.GetValue();
1636
1637         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1638              (constr->height.GetRelationship() != wxAsIs) )
1639         {
1640             SetSize(x, y, w, h);
1641         }
1642         else
1643         {
1644             // If we don't want to resize this window, just move it...
1645             Move(x, y);
1646         }
1647     }
1648     else if ( constr )
1649     {
1650         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1651                    GetClassInfo()->GetClassName(),
1652                    GetName().c_str());
1653     }
1654
1655     if ( recurse )
1656     {
1657         wxWindowList::Node *node = GetChildren().GetFirst();
1658         while (node)
1659         {
1660             wxWindow *win = node->GetData();
1661             if ( !win->IsTopLevel() && win->GetConstraints() )
1662                 win->SetConstraintSizes();
1663             node = node->GetNext();
1664         }
1665     }
1666 }
1667
1668 // Only set the size/position of the constraint (if any)
1669 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1670 {
1671     wxLayoutConstraints *constr = GetConstraints();
1672     if ( constr )
1673     {
1674         if ( x != -1 )
1675         {
1676             constr->left.SetValue(x);
1677             constr->left.SetDone(TRUE);
1678         }
1679         if ( y != -1 )
1680         {
1681             constr->top.SetValue(y);
1682             constr->top.SetDone(TRUE);
1683         }
1684         if ( w != -1 )
1685         {
1686             constr->width.SetValue(w);
1687             constr->width.SetDone(TRUE);
1688         }
1689         if ( h != -1 )
1690         {
1691             constr->height.SetValue(h);
1692             constr->height.SetDone(TRUE);
1693         }
1694     }
1695 }
1696
1697 void wxWindowBase::MoveConstraint(int x, int y)
1698 {
1699     wxLayoutConstraints *constr = GetConstraints();
1700     if ( constr )
1701     {
1702         if ( x != -1 )
1703         {
1704             constr->left.SetValue(x);
1705             constr->left.SetDone(TRUE);
1706         }
1707         if ( y != -1 )
1708         {
1709             constr->top.SetValue(y);
1710             constr->top.SetDone(TRUE);
1711         }
1712     }
1713 }
1714
1715 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1716 {
1717     wxLayoutConstraints *constr = GetConstraints();
1718     if ( constr )
1719     {
1720         *w = constr->width.GetValue();
1721         *h = constr->height.GetValue();
1722     }
1723     else
1724         GetSize(w, h);
1725 }
1726
1727 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1728 {
1729     wxLayoutConstraints *constr = GetConstraints();
1730     if ( constr )
1731     {
1732         *w = constr->width.GetValue();
1733         *h = constr->height.GetValue();
1734     }
1735     else
1736         GetClientSize(w, h);
1737 }
1738
1739 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1740 {
1741     wxLayoutConstraints *constr = GetConstraints();
1742     if ( constr )
1743     {
1744         *x = constr->left.GetValue();
1745         *y = constr->top.GetValue();
1746     }
1747     else
1748         GetPosition(x, y);
1749 }
1750
1751 #endif // wxUSE_CONSTRAINTS
1752
1753 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1754 {
1755     // don't do it for the dialogs/frames - they float independently of their
1756     // parent
1757     if ( !IsTopLevel() )
1758     {
1759         wxWindow *parent = GetParent();
1760         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1761         {
1762             wxPoint pt(parent->GetClientAreaOrigin());
1763             x += pt.x;
1764             y += pt.y;
1765         }
1766     }
1767 }
1768
1769 // ----------------------------------------------------------------------------
1770 // do Update UI processing for child controls
1771 // ----------------------------------------------------------------------------
1772
1773 void wxWindowBase::UpdateWindowUI(long flags)
1774 {
1775     wxUpdateUIEvent event(GetId());
1776     event.m_eventObject = this;
1777
1778     if ( GetEventHandler()->ProcessEvent(event) )
1779     {
1780         DoUpdateWindowUI(event);
1781     }
1782
1783     if (flags & wxUPDATE_UI_RECURSE)
1784     {
1785         wxWindowList::Node* node = GetChildren().GetFirst();
1786         while (node)
1787         {
1788             wxWindow* child = (wxWindow*) node->GetData();
1789             child->UpdateWindowUI(flags);
1790             node = node->GetNext();
1791         }
1792     }
1793 }
1794
1795 // do the window-specific processing after processing the update event
1796 // TODO: take specific knowledge out of this function and
1797 // put in each control's base class. Unfortunately we don't
1798 // yet have base implementation files for wxCheckBox and wxRadioButton.
1799 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1800 {
1801     if ( event.GetSetEnabled() )
1802         Enable(event.GetEnabled());
1803
1804 #if wxUSE_CONTROLS
1805     if ( event.GetSetText() )
1806     {
1807         wxControl *control = wxDynamicCastThis(wxControl);
1808         if ( control )
1809         {
1810             if ( event.GetText() != control->GetLabel() )
1811                 control->SetLabel(event.GetText());
1812         }
1813 #if wxUSE_CHECKBOX
1814         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1815         if ( checkbox )
1816         {
1817             if ( event.GetSetChecked() )
1818                 checkbox->SetValue(event.GetChecked());
1819         }
1820 #endif // wxUSE_CHECKBOX
1821
1822 #if wxUSE_RADIOBTN
1823         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1824         if ( radiobtn )
1825         {
1826             if ( event.GetSetChecked() )
1827                 radiobtn->SetValue(event.GetChecked());
1828         }
1829 #endif // wxUSE_RADIOBTN
1830     }
1831 #endif
1832 }
1833
1834 // call internal idle recursively
1835 void wxWindowBase::ProcessInternalIdle()
1836 {
1837     OnInternalIdle();
1838
1839     wxWindowList::Node  *node = GetChildren().GetFirst();
1840     while (node)
1841     {
1842         wxWindow *child = node->GetData();
1843         child->ProcessInternalIdle();
1844         node = node->GetNext();
1845     }
1846 }
1847
1848 // ----------------------------------------------------------------------------
1849 // dialog units translations
1850 // ----------------------------------------------------------------------------
1851
1852 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1853 {
1854     int charWidth = GetCharWidth();
1855     int charHeight = GetCharHeight();
1856     wxPoint pt2(-1, -1);
1857     if (pt.x != -1)
1858         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1859     if (pt.y != -1)
1860         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1861
1862     return pt2;
1863 }
1864
1865 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1866 {
1867     int charWidth = GetCharWidth();
1868     int charHeight = GetCharHeight();
1869     wxPoint pt2(-1, -1);
1870     if (pt.x != -1)
1871         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1872     if (pt.y != -1)
1873         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1874
1875     return pt2;
1876 }
1877
1878 // ----------------------------------------------------------------------------
1879 // event handlers
1880 // ----------------------------------------------------------------------------
1881
1882 // propagate the colour change event to the subwindows
1883 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1884 {
1885     wxWindowList::Node *node = GetChildren().GetFirst();
1886     while ( node )
1887     {
1888         // Only propagate to non-top-level windows
1889         wxWindow *win = node->GetData();
1890         if ( !win->IsTopLevel() )
1891         {
1892             wxSysColourChangedEvent event2;
1893             event.m_eventObject = win;
1894             win->GetEventHandler()->ProcessEvent(event2);
1895         }
1896
1897         node = node->GetNext();
1898     }
1899 }
1900
1901 // the default action is to populate dialog with data when it's created,
1902 // and nudge the UI into displaying itself correctly in case
1903 // we've turned the wxUpdateUIEvents frequency down low.
1904 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1905 {
1906     TransferDataToWindow();
1907
1908     // Update the UI at this point
1909     UpdateWindowUI(wxUPDATE_UI_RECURSE);
1910 }
1911
1912 // process Ctrl-Alt-mclick
1913 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1914 {
1915 #if wxUSE_MSGDLG
1916     if ( event.ControlDown() && event.AltDown() )
1917     {
1918         // don't translate these strings
1919         wxString port;
1920
1921 #ifdef __WXUNIVERSAL__
1922         port = _T("Univ/");
1923 #endif // __WXUNIVERSAL__
1924
1925         switch ( wxGetOsVersion() )
1926         {
1927             case wxMOTIF_X:     port += _T("Motif"); break;
1928             case wxMAC:
1929             case wxMAC_DARWIN:  port += _T("Mac"); break;
1930             case wxBEOS:        port += _T("BeOS"); break;
1931             case wxGTK:
1932             case wxGTK_WIN32:
1933             case wxGTK_OS2:
1934             case wxGTK_BEOS:    port += _T("GTK"); break;
1935             case wxWINDOWS:
1936             case wxPENWINDOWS:
1937             case wxWINDOWS_NT:
1938             case wxWIN32S:
1939             case wxWIN95:
1940             case wxWIN386:      port += _T("MS Windows"); break;
1941             case wxMGL_UNIX:
1942             case wxMGL_X:
1943             case wxMGL_WIN32:
1944             case wxMGL_OS2:     port += _T("MGL"); break;
1945             case wxWINDOWS_OS2:
1946             case wxOS2_PM:      port += _T("OS/2"); break;
1947             default:            port += _T("unknown"); break;
1948         }
1949
1950         wxMessageBox(wxString::Format(
1951                                       _T(
1952                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
1953                                         ),
1954                                       port.c_str(),
1955                                       wxMAJOR_VERSION,
1956                                       wxMINOR_VERSION,
1957                                       wxRELEASE_NUMBER,
1958 #if wxUSE_UNICODE
1959                                       L" (Unicode)",
1960 #else
1961                                       "",
1962 #endif
1963                                       __TDATE__,
1964                                       __TTIME__
1965                                      ),
1966                      _T("wxWindows information"),
1967                      wxICON_INFORMATION | wxOK,
1968                      (wxWindow *)this);
1969     }
1970     else
1971 #endif // wxUSE_MSGDLG
1972     {
1973         event.Skip();
1974     }
1975 }
1976
1977 // ----------------------------------------------------------------------------
1978 // accessibility
1979 // ----------------------------------------------------------------------------
1980
1981 #if wxUSE_ACCESSIBILITY
1982 void wxWindowBase::SetAccessible(wxAccessible* accessible)
1983 {
1984     if (m_accessible && (accessible != m_accessible))
1985         delete m_accessible;
1986     m_accessible = accessible;
1987     if (m_accessible)
1988         m_accessible->SetWindow((wxWindow*) this);
1989 }
1990
1991 // Returns the accessible object, creating if necessary.
1992 wxAccessible* wxWindowBase::GetOrCreateAccessible()
1993 {
1994     if (!m_accessible)
1995         m_accessible = CreateAccessible();
1996     return m_accessible;
1997 }
1998
1999 // Override to create a specific accessible object.
2000 wxAccessible* wxWindowBase::CreateAccessible()
2001 {
2002     return new wxWindowAccessible((wxWindow*) this);
2003 }
2004
2005 #endif
2006
2007 // ----------------------------------------------------------------------------
2008 // list classes implementation
2009 // ----------------------------------------------------------------------------
2010
2011 void wxWindowListNode::DeleteData()
2012 {
2013     delete (wxWindow *)GetData();
2014 }
2015
2016 // ----------------------------------------------------------------------------
2017 // borders
2018 // ----------------------------------------------------------------------------
2019
2020 wxBorder wxWindowBase::GetBorder(long flags) const
2021 {
2022     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2023     if ( border == wxBORDER_DEFAULT )
2024     {
2025         border = GetDefaultBorder();
2026     }
2027
2028     return border;
2029 }
2030
2031 wxBorder wxWindowBase::GetDefaultBorder() const
2032 {
2033     return wxBORDER_NONE;
2034 }
2035
2036 // ----------------------------------------------------------------------------
2037 // hit testing
2038 // ----------------------------------------------------------------------------
2039
2040 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2041 {
2042     // here we just check if the point is inside the window or not
2043
2044     // check the top and left border first
2045     bool outside = x < 0 || y < 0;
2046     if ( !outside )
2047     {
2048         // check the right and bottom borders too
2049         wxSize size = GetSize();
2050         outside = x >= size.x || y >= size.y;
2051     }
2052
2053     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2054 }
2055
2056 // ----------------------------------------------------------------------------
2057 // mouse capture
2058 // ----------------------------------------------------------------------------
2059
2060 struct WXDLLEXPORT wxWindowNext
2061 {
2062     wxWindow *win;
2063     wxWindowNext *next;
2064 } *wxWindowBase::ms_winCaptureNext = NULL;
2065
2066 void wxWindowBase::CaptureMouse()
2067 {
2068     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2069
2070     wxWindow *winOld = GetCapture();
2071     if ( winOld )
2072     {
2073         ((wxWindowBase*) winOld)->DoReleaseMouse();
2074
2075         // save it on stack
2076         wxWindowNext *item = new wxWindowNext;
2077         item->win = winOld;
2078         item->next = ms_winCaptureNext;
2079         ms_winCaptureNext = item;
2080     }
2081     //else: no mouse capture to save
2082
2083     DoCaptureMouse();
2084 }
2085
2086 void wxWindowBase::ReleaseMouse()
2087 {
2088     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2089
2090     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2091
2092     DoReleaseMouse();
2093
2094     if ( ms_winCaptureNext )
2095     {
2096         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2097
2098         wxWindowNext *item = ms_winCaptureNext;
2099         ms_winCaptureNext = item->next;
2100         delete item;
2101     }
2102     //else: stack is empty, no previous capture
2103
2104     wxLogTrace(_T("mousecapture"),
2105                _T("After ReleaseMouse() mouse is captured by %p"),
2106                GetCapture());
2107 }
2108
2109
2110 void wxWindowBase::SendDestroyEvent()
2111 {
2112     wxWindowDestroyEvent event;
2113     event.SetEventObject(this);
2114     event.SetId(GetId());
2115     GetEventHandler()->ProcessEvent(event);
2116 }
2117
2118 // ----------------------------------------------------------------------------
2119 // event processing
2120 // ----------------------------------------------------------------------------
2121
2122 #if wxUSE_VALIDATORS
2123
2124 bool wxWindowBase::TryValidator(wxEvent& event)
2125 {
2126     // Can only use the validator of the window which
2127     // is receiving the event
2128     if ( event.GetEventObject() == this )
2129     {
2130         wxValidator *validator = GetValidator();
2131         if ( validator && validator->ProcessEvent(event) )
2132         {
2133             return TRUE;
2134         }
2135     }
2136
2137     return FALSE;
2138 }
2139
2140 #endif // wxUSE_VALIDATORS
2141
2142 bool wxWindowBase::TryParent(wxEvent& event)
2143 {
2144     // Carry on up the parent-child hierarchy, but only if event is a command
2145     // event: it wouldn't make sense for a parent to receive a child's size
2146     // event, for example
2147     if ( event.IsCommandEvent() )
2148     {
2149         // honour the requests to stop propagation at this window: this is
2150         // used by the dialogs, for example, to prevent processing the events
2151         // from the dialog controls in the parent frame which rarely, if ever,
2152         // makes sense
2153         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2154         {
2155             wxWindow *parent = GetParent();
2156             if ( parent && !parent->IsBeingDeleted() )
2157                 return parent->GetEventHandler()->ProcessEvent(event);
2158         }
2159     }
2160
2161     return wxEvtHandler::TryParent(event);
2162 }
2163
2164 // ----------------------------------------------------------------------------
2165 // global functions
2166 // ----------------------------------------------------------------------------
2167
2168 wxWindow* wxGetTopLevelParent(wxWindow *win)
2169 {
2170     while ( win && !win->IsTopLevel() )
2171          win = win->GetParent();
2172
2173     return win;
2174 }
2175
2176 #if wxUSE_ACCESSIBILITY
2177 // ----------------------------------------------------------------------------
2178 // accessible object for windows
2179 // ----------------------------------------------------------------------------
2180
2181 // Can return either a child object, or an integer
2182 // representing the child element, starting from 1.
2183 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& pt, int* childId, wxAccessible** childObject)
2184 {
2185     wxASSERT( GetWindow() != NULL );
2186     if (!GetWindow())
2187         return wxACC_FAIL;
2188
2189     return wxACC_NOT_IMPLEMENTED;
2190 }
2191
2192 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2193 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2194 {
2195     wxASSERT( GetWindow() != NULL );
2196     if (!GetWindow())
2197         return wxACC_FAIL;
2198
2199     wxWindow* win = NULL;
2200     if (elementId == 0)
2201     {
2202         win = GetWindow();
2203     }
2204     else
2205     {
2206         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2207         {
2208             win = (wxWindow*) GetWindow()->GetChildren().Nth(elementId-1)->GetData();
2209         }
2210         else
2211             return wxACC_FAIL;
2212     }
2213     if (win)
2214     {
2215         rect = win->GetRect();
2216         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2217             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2218         return wxACC_OK;
2219     }
2220
2221     return wxACC_NOT_IMPLEMENTED;
2222 }
2223
2224 // Navigates from fromId to toId/toObject.
2225 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2226                              int* toId, wxAccessible** toObject)
2227 {
2228     wxASSERT( GetWindow() != NULL );
2229     if (!GetWindow())
2230         return wxACC_FAIL;
2231
2232     switch (navDir)
2233     {
2234     case wxNAVDIR_FIRSTCHILD:
2235         {
2236             if (GetWindow()->GetChildren().GetCount() == 0)
2237                 return wxACC_FALSE;
2238             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2239             *toObject = childWindow->GetOrCreateAccessible();
2240
2241             return wxACC_OK;
2242         }
2243     case wxNAVDIR_LASTCHILD:
2244         {
2245             if (GetWindow()->GetChildren().GetCount() == 0)
2246                 return wxACC_FALSE;
2247             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2248             *toObject = childWindow->GetOrCreateAccessible();
2249
2250             return wxACC_OK;
2251         }
2252     case wxNAVDIR_RIGHT:
2253     case wxNAVDIR_DOWN:
2254     case wxNAVDIR_NEXT:
2255         {
2256             wxWindowList::Node *node = NULL;
2257             if (fromId == 0)
2258             {
2259                 // Can't navigate to sibling of this window
2260                 // if we're a top-level window.
2261                 if (!GetWindow()->GetParent())
2262                     return wxACC_NOT_IMPLEMENTED;
2263
2264                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2265             }
2266             else
2267             {
2268                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2269                     node = (wxWindowList::Node*) GetWindow()->GetChildren().Nth(fromId-1);
2270             }
2271
2272             if (node && node->GetNext())
2273             {
2274                 wxWindow* nextWindow = (wxWindow*) node->GetNext()->Data();
2275                 *toObject = nextWindow->GetOrCreateAccessible();
2276                 return wxACC_OK;
2277             }
2278             else
2279                 return wxACC_FALSE;
2280         }
2281     case wxNAVDIR_LEFT:
2282     case wxNAVDIR_UP:
2283     case wxNAVDIR_PREVIOUS:
2284         {
2285             wxWindowList::Node *node = NULL;
2286             if (fromId == 0)
2287             {
2288                 // Can't navigate to sibling of this window
2289                 // if we're a top-level window.
2290                 if (!GetWindow()->GetParent())
2291                     return wxACC_NOT_IMPLEMENTED;
2292
2293                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2294             }
2295             else
2296             {
2297                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2298                     node = (wxWindowList::Node*) GetWindow()->GetChildren().Nth(fromId-1);
2299             }
2300
2301             if (node && node->GetPrevious())
2302             {
2303                 wxWindow* previousWindow = (wxWindow*) node->GetPrevious()->Data();
2304                 *toObject = previousWindow->GetOrCreateAccessible();
2305                 return wxACC_OK;
2306             }
2307             else
2308                 return wxACC_FALSE;
2309         }
2310     }
2311
2312     return wxACC_NOT_IMPLEMENTED;
2313 }
2314
2315 // Gets the name of the specified object.
2316 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2317 {
2318     wxASSERT( GetWindow() != NULL );
2319     if (!GetWindow())
2320         return wxACC_FAIL;
2321
2322     wxString title;
2323
2324     // If a child, leave wxWindows to call the function on the actual
2325     // child object.
2326     if (childId > 0)
2327         return wxACC_NOT_IMPLEMENTED;
2328
2329     // This will eventually be replaced by specialised
2330     // accessible classes, one for each kind of wxWindows
2331     // control or window.
2332     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2333         title = ((wxButton*) GetWindow())->GetLabel();
2334     else
2335         title = GetWindow()->GetName();
2336
2337     if (!title.IsEmpty())
2338     {
2339         *name = title;
2340         return wxACC_OK;
2341     }
2342     else
2343         return wxACC_NOT_IMPLEMENTED;
2344 }
2345
2346 // Gets the number of children.
2347 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2348 {
2349     wxASSERT( GetWindow() != NULL );
2350     if (!GetWindow())
2351         return wxACC_FAIL;
2352
2353     *childId = (int) GetWindow()->GetChildren().GetCount();
2354     return wxACC_OK;
2355 }
2356
2357 // Gets the specified child (starting from 1).
2358 // If *child is NULL and return value is wxACC_OK,
2359 // this means that the child is a simple element and
2360 // not an accessible object.
2361 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2362 {
2363     wxASSERT( GetWindow() != NULL );
2364     if (!GetWindow())
2365         return wxACC_FAIL;
2366
2367     if (childId == 0)
2368     {
2369         *child = this;
2370         return wxACC_OK;
2371     }
2372
2373     if (childId > (int) GetWindow()->GetChildren().GetCount())
2374         return wxACC_FAIL;
2375
2376     wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().Nth(childId-1)->GetData();
2377     *child = childWindow->GetOrCreateAccessible();
2378     if (*child)
2379         return wxACC_OK;
2380     else
2381         return wxACC_FAIL;
2382 }
2383
2384 // Gets the parent, or NULL.
2385 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2386 {
2387     wxASSERT( GetWindow() != NULL );
2388     if (!GetWindow())
2389         return wxACC_FAIL;
2390
2391     wxWindow* parentWindow = GetWindow()->GetParent();
2392     if (!parentWindow)
2393     {
2394         *parent = NULL;
2395         return wxACC_OK;
2396     }
2397     else
2398     {
2399         *parent = parentWindow->GetOrCreateAccessible();
2400         if (*parent)
2401             return wxACC_OK;
2402         else
2403             return wxACC_FAIL;
2404     }
2405 }
2406
2407 // Performs the default action. childId is 0 (the action for this object)
2408 // or > 0 (the action for a child).
2409 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2410 // window (e.g. an edit control).
2411 wxAccStatus wxWindowAccessible::DoDefaultAction(int childId)
2412 {
2413     wxASSERT( GetWindow() != NULL );
2414     if (!GetWindow())
2415         return wxACC_FAIL;
2416
2417     return wxACC_NOT_IMPLEMENTED;
2418 }
2419
2420 // Gets the default action for this object (0) or > 0 (the action for a child).
2421 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2422 // string if there is no action.
2423 // The retrieved string describes the action that is performed on an object,
2424 // not what the object does as a result. For example, a toolbar button that prints
2425 // a document has a default action of "Press" rather than "Prints the current document."
2426 wxAccStatus wxWindowAccessible::GetDefaultAction(int childId, wxString* actionName)
2427 {
2428     wxASSERT( GetWindow() != NULL );
2429     if (!GetWindow())
2430         return wxACC_FAIL;
2431
2432     return wxACC_NOT_IMPLEMENTED;
2433 }
2434
2435 // Returns the description for this object or a child.
2436 wxAccStatus wxWindowAccessible::GetDescription(int childId, wxString* description)
2437 {
2438     wxASSERT( GetWindow() != NULL );
2439     if (!GetWindow())
2440         return wxACC_FAIL;
2441
2442     wxString ht(GetWindow()->GetHelpText());
2443     if (!ht.IsEmpty())
2444     {
2445         *description = ht;
2446         return wxACC_OK;
2447     }
2448     return wxACC_NOT_IMPLEMENTED;
2449 }
2450
2451 // Returns help text for this object or a child, similar to tooltip text.
2452 wxAccStatus wxWindowAccessible::GetHelpText(int childId, wxString* helpText)
2453 {
2454     wxASSERT( GetWindow() != NULL );
2455     if (!GetWindow())
2456         return wxACC_FAIL;
2457
2458     wxString ht(GetWindow()->GetHelpText());
2459     if (!ht.IsEmpty())
2460     {
2461         *helpText = ht;
2462         return wxACC_OK;
2463     }
2464     return wxACC_NOT_IMPLEMENTED;
2465 }
2466
2467 // Returns the keyboard shortcut for this object or child.
2468 // Return e.g. ALT+K
2469 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int childId, wxString* shortcut)
2470 {
2471     wxASSERT( GetWindow() != NULL );
2472     if (!GetWindow())
2473         return wxACC_FAIL;
2474
2475     return wxACC_NOT_IMPLEMENTED;
2476 }
2477
2478 // Returns a role constant.
2479 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2480 {
2481     wxASSERT( GetWindow() != NULL );
2482     if (!GetWindow())
2483         return wxACC_FAIL;
2484
2485     // If a child, leave wxWindows to call the function on the actual
2486     // child object.
2487     if (childId > 0)
2488         return wxACC_NOT_IMPLEMENTED;
2489
2490     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2491         return wxACC_NOT_IMPLEMENTED;
2492 #if wxUSE_STATUSBAR
2493     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2494         return wxACC_NOT_IMPLEMENTED;
2495 #endif
2496 #if wxUSE_TOOLBAR
2497     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2498         return wxACC_NOT_IMPLEMENTED;
2499 #endif
2500
2501     //*role = wxROLE_SYSTEM_CLIENT;
2502     *role = wxROLE_SYSTEM_CLIENT;
2503     return wxACC_OK;
2504
2505     return wxACC_NOT_IMPLEMENTED;
2506 }
2507
2508 // Returns a state constant.
2509 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2510 {
2511     wxASSERT( GetWindow() != NULL );
2512     if (!GetWindow())
2513         return wxACC_FAIL;
2514
2515     // If a child, leave wxWindows to call the function on the actual
2516     // child object.
2517     if (childId > 0)
2518         return wxACC_NOT_IMPLEMENTED;
2519
2520     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2521         return wxACC_NOT_IMPLEMENTED;
2522
2523 #if wxUSE_STATUSBAR
2524     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2525         return wxACC_NOT_IMPLEMENTED;
2526 #endif
2527 #if wxUSE_TOOLBAR
2528     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2529         return wxACC_NOT_IMPLEMENTED;
2530 #endif
2531
2532     *state = 0;
2533     return wxACC_OK;
2534
2535     return wxACC_NOT_IMPLEMENTED;
2536 }
2537
2538 // Returns a localized string representing the value for the object
2539 // or child.
2540 wxAccStatus wxWindowAccessible::GetValue(int childId, wxString* strValue)
2541 {
2542     wxASSERT( GetWindow() != NULL );
2543     if (!GetWindow())
2544         return wxACC_FAIL;
2545
2546     return wxACC_NOT_IMPLEMENTED;
2547 }
2548
2549 // Selects the object or child.
2550 wxAccStatus wxWindowAccessible::Select(int childId, wxAccSelectionFlags selectFlags)
2551 {
2552     wxASSERT( GetWindow() != NULL );
2553     if (!GetWindow())
2554         return wxACC_FAIL;
2555
2556     return wxACC_NOT_IMPLEMENTED;
2557 }
2558
2559 // Gets the window with the keyboard focus.
2560 // If childId is 0 and child is NULL, no object in
2561 // this subhierarchy has the focus.
2562 // If this object has the focus, child should be 'this'.
2563 wxAccStatus wxWindowAccessible::GetFocus(int* childId, wxAccessible** child)
2564 {
2565     wxASSERT( GetWindow() != NULL );
2566     if (!GetWindow())
2567         return wxACC_FAIL;
2568
2569     return wxACC_NOT_IMPLEMENTED;
2570 }
2571
2572 // Gets a variant representing the selected children
2573 // of this object.
2574 // Acceptable values:
2575 // - a null variant (IsNull() returns TRUE)
2576 // - a list variant (GetType() == wxT("list")
2577 // - an integer representing the selected child element,
2578 //   or 0 if this object is selected (GetType() == wxT("long")
2579 // - a "void*" pointer to a wxAccessible child object
2580 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* selections)
2581 {
2582     wxASSERT( GetWindow() != NULL );
2583     if (!GetWindow())
2584         return wxACC_FAIL;
2585
2586     return wxACC_NOT_IMPLEMENTED;
2587 }
2588
2589 #endif // wxUSE_ACCESSIBILITY