src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76
  77 // Windows List
  78 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  79
  80 // globals
  81 #if wxUSE_MENUS
  82 wxMenu *wxCurrentPopupMenu = NULL;
  83 #endif // wxUSE_MENUS
  84
  85 // ----------------------------------------------------------------------------
  86 // static data
  87 // ----------------------------------------------------------------------------
  88
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105     EVT_SIZE(wxWindowBase::InternalOnSize)
 106 END_EVENT_TABLE()
 107
 108 // ============================================================================
 109 // implementation of the common functionality of the wxWindow class
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // initialization
 114 // ----------------------------------------------------------------------------
 115
 116 // the default initialization
 117 wxWindowBase::wxWindowBase()
 118 {
 119     // no window yet, no parent nor children
 120     m_parent = NULL;
 121     m_windowId = wxID_ANY;
 122
 123     // no constraints on the minimal window size
 124     m_minWidth =
 125     m_maxWidth = wxDefaultCoord;
 126     m_minHeight =
 127     m_maxHeight = wxDefaultCoord;
 128
 129     // invalidiated cache value
 130     m_bestSizeCache = wxDefaultSize;
 131
 132     // window are created enabled and visible by default
 133     m_isShown =
 134     m_isEnabled = true;
 135
 136     // the default event handler is just this window
 137     m_eventHandler = this;
 138
 139 #if wxUSE_VALIDATORS
 140     // no validator
 141     m_windowValidator = NULL;
 142 #endif // wxUSE_VALIDATORS
 143
 144     // the colours/fonts are default for now, so leave m_font,
 145     // m_backgroundColour and m_foregroundColour uninitialized and set those
 146     m_hasBgCol =
 147     m_hasFgCol =
 148     m_hasFont = false;
 149     m_inheritBgCol =
 150     m_inheritFgCol =
 151     m_inheritFont = false;
 152
 153     // no style bits
 154     m_exStyle =
 155     m_windowStyle = 0;
 156
 157     m_backgroundStyle = wxBG_STYLE_ERASE;
 158
 159 #if wxUSE_CONSTRAINTS
 160     // no constraints whatsoever
 161     m_constraints = NULL;
 162     m_constraintsInvolvedIn = NULL;
 163 #endif // wxUSE_CONSTRAINTS
 164
 165     m_windowSizer = NULL;
 166     m_containingSizer = NULL;
 167     m_autoLayout = false;
 168
 169 #if wxUSE_DRAG_AND_DROP
 170     m_dropTarget = NULL;
 171 #endif // wxUSE_DRAG_AND_DROP
 172
 173 #if wxUSE_TOOLTIPS
 174     m_tooltip = NULL;
 175 #endif // wxUSE_TOOLTIPS
 176
 177 #if wxUSE_CARET
 178     m_caret = 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_scrollHelper = NULL;
 192
 193     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 194 #if wxUSE_SYSTEM_OPTIONS
 195     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 196     {
 197        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 198     }
 199 #endif
 200
 201     // Whether we're using the current theme for this window (wxGTK only for now)
 202     m_themeEnabled = false;
 203
 204     // This is set to true by SendDestroyEvent() which should be called by the
 205     // most derived class to ensure that the destruction event is sent as soon
 206     // as possible to allow its handlers to still see the undestroyed window
 207     m_isBeingDeleted = false;
 208
 209     m_freezeCount = 0;
 210 }
 211
 212 // common part of window creation process
 213 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 214                               wxWindowID id,
 215                               const wxPoint& WXUNUSED(pos),
 216                               const wxSize& WXUNUSED(size),
 217                               long style,
 218                               const wxValidator& wxVALIDATOR_PARAM(validator),
 219                               const wxString& name)
 220 {
 221     // ids are limited to 16 bits under MSW so if you care about portability,
 222     // it's not a good idea to use ids out of this range (and negative ids are
 223     // reserved for wxWidgets own usage)
 224     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 225                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 226                   wxT("invalid id value") );
 227
 228     // generate a new id if the user doesn't care about it
 229     if ( id == wxID_ANY )
 230     {
 231         m_windowId = NewControlId();
 232     }
 233     else // valid id specified
 234     {
 235         m_windowId = id;
 236     }
 237
 238     // don't use SetWindowStyleFlag() here, this function should only be called
 239     // to change the flag after creation as it tries to reflect the changes in
 240     // flags by updating the window dynamically and we don't need this here
 241     m_windowStyle = style;
 242
 243     SetName(name);
 244     SetParent(parent);
 245
 246 #if wxUSE_VALIDATORS
 247     SetValidator(validator);
 248 #endif // wxUSE_VALIDATORS
 249
 250     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 251     // have it too - like this it's possible to set it only in the top level
 252     // dialog/frame and all children will inherit it by defult
 253     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 254     {
 255         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 256     }
 257
 258     return true;
 259 }
 260
 261 bool wxWindowBase::ToggleWindowStyle(int flag)
 262 {
 263     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 264
 265     bool rc;
 266     long style = GetWindowStyleFlag();
 267     if ( style & flag )
 268     {
 269         style &= ~flag;
 270         rc = false;
 271     }
 272     else // currently off
 273     {
 274         style |= flag;
 275         rc = true;
 276     }
 277
 278     SetWindowStyleFlag(style);
 279
 280     return rc;
 281 }
 282
 283 // ----------------------------------------------------------------------------
 284 // destruction
 285 // ----------------------------------------------------------------------------
 286
 287 // common clean up
 288 wxWindowBase::~wxWindowBase()
 289 {
 290     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 291
 292     // FIXME if these 2 cases result from programming errors in the user code
 293     //       we should probably assert here instead of silently fixing them
 294
 295     // Just in case the window has been Closed, but we're then deleting
 296     // immediately: don't leave dangling pointers.
 297     wxPendingDelete.DeleteObject(this);
 298
 299     // Just in case we've loaded a top-level window via LoadNativeDialog but
 300     // we weren't a dialog class
 301     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 302
 303 #if wxUSE_MENUS
 304     // The associated popup menu can still be alive, disassociate from it in
 305     // this case
 306     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 307         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 308 #endif // wxUSE_MENUS
 309
 310     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 311
 312     // notify the parent about this window destruction
 313     if ( m_parent )
 314         m_parent->RemoveChild(this);
 315
 316 #if wxUSE_CARET
 317     delete m_caret;
 318 #endif // wxUSE_CARET
 319
 320 #if wxUSE_VALIDATORS
 321     delete m_windowValidator;
 322 #endif // wxUSE_VALIDATORS
 323
 324 #if wxUSE_CONSTRAINTS
 325     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 326     // at deleted windows as they delete themselves.
 327     DeleteRelatedConstraints();
 328
 329     if ( m_constraints )
 330     {
 331         // This removes any dangling pointers to this window in other windows'
 332         // constraintsInvolvedIn lists.
 333         UnsetConstraints(m_constraints);
 334         delete m_constraints;
 335         m_constraints = NULL;
 336     }
 337 #endif // wxUSE_CONSTRAINTS
 338
 339     if ( m_containingSizer )
 340         m_containingSizer->Detach( (wxWindow*)this );
 341
 342     delete m_windowSizer;
 343
 344 #if wxUSE_DRAG_AND_DROP
 345     delete m_dropTarget;
 346 #endif // wxUSE_DRAG_AND_DROP
 347
 348 #if wxUSE_TOOLTIPS
 349     delete m_tooltip;
 350 #endif // wxUSE_TOOLTIPS
 351
 352 #if wxUSE_ACCESSIBILITY
 353     delete m_accessible;
 354 #endif
 355
 356 #if wxUSE_HELP
 357     // NB: this has to be called unconditionally, because we don't know
 358     //     whether this window has associated help text or not
 359     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 360     if ( helpProvider )
 361         helpProvider->RemoveHelp(this);
 362 #endif
 363 }
 364
 365 bool wxWindowBase::IsBeingDeleted() const
 366 {
 367     return m_isBeingDeleted ||
 368             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 369 }
 370
 371 void wxWindowBase::SendDestroyEvent()
 372 {
 373     if ( m_isBeingDeleted )
 374     {
 375         // we could have been already called from a more derived class dtor,
 376         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 377         // should be simply ignored
 378         return;
 379     }
 380
 381     m_isBeingDeleted = true;
 382
 383     wxWindowDestroyEvent event;
 384     event.SetEventObject(this);
 385     event.SetId(GetId());
 386     GetEventHandler()->ProcessEvent(event);
 387 }
 388
 389 bool wxWindowBase::Destroy()
 390 {
 391     SendDestroyEvent();
 392
 393     delete this;
 394
 395     return true;
 396 }
 397
 398 bool wxWindowBase::Close(bool force)
 399 {
 400     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 401     event.SetEventObject(this);
 402     event.SetCanVeto(!force);
 403
 404     // return false if window wasn't closed because the application vetoed the
 405     // close event
 406     return HandleWindowEvent(event) && !event.GetVeto();
 407 }
 408
 409 bool wxWindowBase::DestroyChildren()
 410 {
 411     wxWindowList::compatibility_iterator node;
 412     for ( ;; )
 413     {
 414         // we iterate until the list becomes empty
 415         node = GetChildren().GetFirst();
 416         if ( !node )
 417             break;
 418
 419         wxWindow *child = node->GetData();
 420
 421         // note that we really want to delete it immediately so don't call the
 422         // possible overridden Destroy() version which might not delete the
 423         // child immediately resulting in problems with our (top level) child
 424         // outliving its parent
 425         child->wxWindowBase::Destroy();
 426
 427         wxASSERT_MSG( !GetChildren().Find(child),
 428                       wxT("child didn't remove itself using RemoveChild()") );
 429     }
 430
 431     return true;
 432 }
 433
 434 // ----------------------------------------------------------------------------
 435 // size/position related methods
 436 // ----------------------------------------------------------------------------
 437
 438 // centre the window with respect to its parent in either (or both) directions
 439 void wxWindowBase::DoCentre(int dir)
 440 {
 441     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 442                  wxT("this method only implements centering child windows") );
 443
 444     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 445 }
 446
 447 // fits the window around the children
 448 void wxWindowBase::Fit()
 449 {
 450     if ( !GetChildren().empty() )
 451     {
 452         SetSize(GetBestSize());
 453     }
 454     //else: do nothing if we have no children
 455 }
 456
 457 // fits virtual size (ie. scrolled area etc.) around children
 458 void wxWindowBase::FitInside()
 459 {
 460     if ( GetChildren().GetCount() > 0 )
 461     {
 462         SetVirtualSize( GetBestVirtualSize() );
 463     }
 464 }
 465
 466 // On Mac, scrollbars are explicitly children.
 467 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 468 static bool wxHasRealChildren(const wxWindowBase* win)
 469 {
 470     int realChildCount = 0;
 471
 472     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 473           node;
 474           node = node->GetNext() )
 475     {
 476         wxWindow *win = node->GetData();
 477         if ( !win->IsTopLevel() && win->IsShown()
 478 #if wxUSE_SCROLLBAR
 479             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 480 #endif
 481             )
 482             realChildCount ++;
 483     }
 484     return (realChildCount > 0);
 485 }
 486 #endif
 487
 488 void wxWindowBase::InvalidateBestSize()
 489 {
 490     m_bestSizeCache = wxDefaultSize;
 491
 492     // parent's best size calculation may depend on its children's
 493     // as long as child window we are in is not top level window itself
 494     // (because the TLW size is never resized automatically)
 495     // so let's invalidate it as well to be safe:
 496     if (m_parent && !IsTopLevel())
 497         m_parent->InvalidateBestSize();
 498 }
 499
 500 // return the size best suited for the current window
 501 wxSize wxWindowBase::DoGetBestSize() const
 502 {
 503     wxSize best;
 504
 505     if ( m_windowSizer )
 506     {
 507         best = m_windowSizer->GetMinSize();
 508     }
 509 #if wxUSE_CONSTRAINTS
 510     else if ( m_constraints )
 511     {
 512         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 513
 514         // our minimal acceptable size is such that all our windows fit inside
 515         int maxX = 0,
 516             maxY = 0;
 517
 518         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 519               node;
 520               node = node->GetNext() )
 521         {
 522             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 523             if ( !c )
 524             {
 525                 // it's not normal that we have an unconstrained child, but
 526                 // what can we do about it?
 527                 continue;
 528             }
 529
 530             int x = c->right.GetValue(),
 531                 y = c->bottom.GetValue();
 532
 533             if ( x > maxX )
 534                 maxX = x;
 535
 536             if ( y > maxY )
 537                 maxY = y;
 538
 539             // TODO: we must calculate the overlaps somehow, otherwise we
 540             //       will never return a size bigger than the current one :-(
 541         }
 542
 543         best = wxSize(maxX, maxY);
 544     }
 545 #endif // wxUSE_CONSTRAINTS
 546     else if ( !GetChildren().empty()
 547 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 548               && wxHasRealChildren(this)
 549 #endif
 550               )
 551     {
 552         // our minimal acceptable size is such that all our visible child
 553         // windows fit inside
 554         int maxX = 0,
 555             maxY = 0;
 556
 557         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 558               node;
 559               node = node->GetNext() )
 560         {
 561             wxWindow *win = node->GetData();
 562             if ( win->IsTopLevel()
 563                     || !win->IsShown()
 564 #if wxUSE_STATUSBAR
 565                         || wxDynamicCast(win, wxStatusBar)
 566 #endif // wxUSE_STATUSBAR
 567                )
 568             {
 569                 // dialogs and frames lie in different top level windows -
 570                 // don't deal with them here; as for the status bars, they
 571                 // don't lie in the client area at all
 572                 continue;
 573             }
 574
 575             int wx, wy, ww, wh;
 576             win->GetPosition(&wx, &wy);
 577
 578             // if the window hadn't been positioned yet, assume that it is in
 579             // the origin
 580             if ( wx == wxDefaultCoord )
 581                 wx = 0;
 582             if ( wy == wxDefaultCoord )
 583                 wy = 0;
 584
 585             win->GetSize(&ww, &wh);
 586             if ( wx + ww > maxX )
 587                 maxX = wx + ww;
 588             if ( wy + wh > maxY )
 589                 maxY = wy + wh;
 590         }
 591
 592         best = wxSize(maxX, maxY);
 593     }
 594     else // ! has children
 595     {
 596         wxSize size = GetMinSize();
 597         if ( !size.IsFullySpecified() )
 598         {
 599             // if the window doesn't define its best size we assume that it can
 600             // be arbitrarily small -- usually this is not the case, of course,
 601             // but we have no way to know what the limit is, it should really
 602             // override DoGetBestClientSize() itself to tell us
 603             size.SetDefaults(wxSize(1, 1));
 604         }
 605
 606         // return as-is, unadjusted by the client size difference.
 607         return size;
 608     }
 609
 610     // Add any difference between size and client size
 611     wxSize diff = GetSize() - GetClientSize();
 612     best.x += wxMax(0, diff.x);
 613     best.y += wxMax(0, diff.y);
 614
 615     return best;
 616 }
 617
 618 // helper of GetWindowBorderSize(): as many ports don't implement support for
 619 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 620 // fallbacks in this case
 621 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 622 {
 623     int rc = wxSystemSettings::GetMetric(
 624         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 625     if ( rc == -1 )
 626     {
 627         switch ( what )
 628         {
 629             case wxSYS_BORDER_X:
 630             case wxSYS_BORDER_Y:
 631                 // 2D border is by default 1 pixel wide
 632                 rc = 1;
 633                 break;
 634
 635             case wxSYS_EDGE_X:
 636             case wxSYS_EDGE_Y:
 637                 // 3D borders are by default 2 pixels
 638                 rc = 2;
 639                 break;
 640
 641             default:
 642                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 643                 rc = 0;
 644         }
 645     }
 646
 647     return rc;
 648 }
 649
 650 wxSize wxWindowBase::GetWindowBorderSize() const
 651 {
 652     wxSize size;
 653
 654     switch ( GetBorder() )
 655     {
 656         case wxBORDER_NONE:
 657             // nothing to do, size is already (0, 0)
 658             break;
 659
 660         case wxBORDER_SIMPLE:
 661         case wxBORDER_STATIC:
 662             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 663             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 664             break;
 665
 666         case wxBORDER_SUNKEN:
 667         case wxBORDER_RAISED:
 668             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 669                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 670             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 671                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 672             break;
 673
 674         case wxBORDER_DOUBLE:
 675             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 676                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 677             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 678                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 679             break;
 680
 681         default:
 682             wxFAIL_MSG(wxT("Unknown border style."));
 683             break;
 684     }
 685
 686     // we have borders on both sides
 687     return size*2;
 688 }
 689
 690 wxSize wxWindowBase::GetEffectiveMinSize() const
 691 {
 692     // merge the best size with the min size, giving priority to the min size
 693     wxSize min = GetMinSize();
 694
 695     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 696     {
 697         wxSize best = GetBestSize();
 698         if (min.x == wxDefaultCoord) min.x =  best.x;
 699         if (min.y == wxDefaultCoord) min.y =  best.y;
 700     }
 701
 702     return min;
 703 }
 704
 705 wxSize wxWindowBase::GetBestSize() const
 706 {
 707     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 708         return m_bestSizeCache;
 709
 710     // call DoGetBestClientSize() first, if a derived class overrides it wants
 711     // it to be used
 712     wxSize size = DoGetBestClientSize();
 713     if ( size != wxDefaultSize )
 714     {
 715         size += DoGetBorderSize();
 716
 717         CacheBestSize(size);
 718         return size;
 719     }
 720
 721     return DoGetBestSize();
 722 }
 723
 724 void wxWindowBase::SetMinSize(const wxSize& minSize)
 725 {
 726     m_minWidth = minSize.x;
 727     m_minHeight = minSize.y;
 728 }
 729
 730 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 731 {
 732     m_maxWidth = maxSize.x;
 733     m_maxHeight = maxSize.y;
 734 }
 735
 736 void wxWindowBase::SetInitialSize(const wxSize& size)
 737 {
 738     // Set the min size to the size passed in.  This will usually either be
 739     // wxDefaultSize or the size passed to this window's ctor/Create function.
 740     SetMinSize(size);
 741
 742     // Merge the size with the best size if needed
 743     wxSize best = GetEffectiveMinSize();
 744
 745     // If the current size doesn't match then change it
 746     if (GetSize() != best)
 747         SetSize(best);
 748 }
 749
 750
 751 // by default the origin is not shifted
 752 wxPoint wxWindowBase::GetClientAreaOrigin() const
 753 {
 754     return wxPoint(0,0);
 755 }
 756
 757 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 758 {
 759     const wxSize diff(GetSize() - GetClientSize());
 760
 761     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 762                   size.y == -1 ? -1 : size.y + diff.y);
 763 }
 764
 765 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 766 {
 767     const wxSize diff(GetSize() - GetClientSize());
 768
 769     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 770                   size.y == -1 ? -1 : size.y - diff.y);
 771 }
 772
 773 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 774 {
 775     if ( m_windowVariant != variant )
 776     {
 777         m_windowVariant = variant;
 778
 779         DoSetWindowVariant(variant);
 780     }
 781 }
 782
 783 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 784 {
 785     // adjust the font height to correspond to our new variant (notice that
 786     // we're only called if something really changed)
 787     wxFont font = GetFont();
 788     int size = font.GetPointSize();
 789     switch ( variant )
 790     {
 791         case wxWINDOW_VARIANT_NORMAL:
 792             break;
 793
 794         case wxWINDOW_VARIANT_SMALL:
 795             size *= 3;
 796             size /= 4;
 797             break;
 798
 799         case wxWINDOW_VARIANT_MINI:
 800             size *= 2;
 801             size /= 3;
 802             break;
 803
 804         case wxWINDOW_VARIANT_LARGE:
 805             size *= 5;
 806             size /= 4;
 807             break;
 808
 809         default:
 810             wxFAIL_MSG(wxT("unexpected window variant"));
 811             break;
 812     }
 813
 814     font.SetPointSize(size);
 815     SetFont(font);
 816 }
 817
 818 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 819                                    int maxW, int maxH,
 820                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 821 {
 822     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 823                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 824                  wxT("min width/height must be less than max width/height!") );
 825
 826     m_minWidth = minW;
 827     m_maxWidth = maxW;
 828     m_minHeight = minH;
 829     m_maxHeight = maxH;
 830 }
 831
 832
 833 #if WXWIN_COMPATIBILITY_2_8
 834 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 835                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 836 {
 837 }
 838
 839 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 840                                        const wxSize& WXUNUSED(maxsize))
 841 {
 842 }
 843 #endif // WXWIN_COMPATIBILITY_2_8
 844
 845 void wxWindowBase::DoSetVirtualSize( int x, int y )
 846 {
 847     m_virtualSize = wxSize(x, y);
 848 }
 849
 850 wxSize wxWindowBase::DoGetVirtualSize() const
 851 {
 852     // we should use the entire client area so if it is greater than our
 853     // virtual size, expand it to fit (otherwise if the window is big enough we
 854     // wouldn't be using parts of it)
 855     wxSize size = GetClientSize();
 856     if ( m_virtualSize.x > size.x )
 857         size.x = m_virtualSize.x;
 858
 859     if ( m_virtualSize.y >= size.y )
 860         size.y = m_virtualSize.y;
 861
 862     return size;
 863 }
 864
 865 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 866 {
 867     // screen position is the same as (0, 0) in client coords for non TLWs (and
 868     // TLWs override this method)
 869     if ( x )
 870         *x = 0;
 871     if ( y )
 872         *y = 0;
 873
 874     ClientToScreen(x, y);
 875 }
 876
 877 void wxWindowBase::SendSizeEvent(int flags)
 878 {
 879     wxSizeEvent event(GetSize(), GetId());
 880     event.SetEventObject(this);
 881     if ( flags & wxSEND_EVENT_POST )
 882         wxPostEvent(this, event);
 883     else
 884         HandleWindowEvent(event);
 885 }
 886
 887 void wxWindowBase::SendSizeEventToParent(int flags)
 888 {
 889     wxWindow * const parent = GetParent();
 890     if ( parent && !parent->IsBeingDeleted() )
 891         parent->SendSizeEvent(flags);
 892 }
 893
 894 bool wxWindowBase::HasScrollbar(int orient) const
 895 {
 896     // if scrolling in the given direction is disabled, we can't have the
 897     // corresponding scrollbar no matter what
 898     if ( !CanScroll(orient) )
 899         return false;
 900
 901     const wxSize sizeVirt = GetVirtualSize();
 902     const wxSize sizeClient = GetClientSize();
 903
 904     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 905                                   : sizeVirt.y > sizeClient.y;
 906 }
 907
 908 // ----------------------------------------------------------------------------
 909 // show/hide/enable/disable the window
 910 // ----------------------------------------------------------------------------
 911
 912 bool wxWindowBase::Show(bool show)
 913 {
 914     if ( show != m_isShown )
 915     {
 916         m_isShown = show;
 917
 918         return true;
 919     }
 920     else
 921     {
 922         return false;
 923     }
 924 }
 925
 926 bool wxWindowBase::IsEnabled() const
 927 {
 928     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 929 }
 930
 931 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 932 {
 933 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 934     DoEnable(enabled);
 935 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 936
 937     OnEnabled(enabled);
 938
 939     // If we are top-level then the logic doesn't apply - otherwise
 940     // showing a modal dialog would result in total greying out (and ungreying
 941     // out later) of everything which would be really ugly
 942     if ( IsTopLevel() )
 943         return;
 944
 945     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 946           node;
 947           node = node->GetNext() )
 948     {
 949         wxWindowBase * const child = node->GetData();
 950         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 951             child->NotifyWindowOnEnableChange(enabled);
 952     }
 953 }
 954
 955 bool wxWindowBase::Enable(bool enable)
 956 {
 957     if ( enable == IsThisEnabled() )
 958         return false;
 959
 960     m_isEnabled = enable;
 961
 962 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 963     DoEnable(enable);
 964 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 965     wxWindowBase * const parent = GetParent();
 966     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 967     {
 968         return true;
 969     }
 970 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 971
 972     NotifyWindowOnEnableChange(enable);
 973
 974     return true;
 975 }
 976
 977 bool wxWindowBase::IsShownOnScreen() const
 978 {
 979     // A window is shown on screen if it itself is shown and so are all its
 980     // parents. But if a window is toplevel one, then its always visible on
 981     // screen if IsShown() returns true, even if it has a hidden parent.
 982     return IsShown() &&
 983            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 984 }
 985
 986 // ----------------------------------------------------------------------------
 987 // RTTI
 988 // ----------------------------------------------------------------------------
 989
 990 bool wxWindowBase::IsTopLevel() const
 991 {
 992     return false;
 993 }
 994
 995 // ----------------------------------------------------------------------------
 996 // Freeze/Thaw
 997 // ----------------------------------------------------------------------------
 998
 999 void wxWindowBase::Freeze()
1000 {
1001     if ( !m_freezeCount++ )
1002     {
1003         // physically freeze this window:
1004         DoFreeze();
1005
1006         // and recursively freeze all children:
1007         for ( wxWindowList::iterator i = GetChildren().begin();
1008               i != GetChildren().end(); ++i )
1009         {
1010             wxWindow *child = *i;
1011             if ( child->IsTopLevel() )
1012                 continue;
1013
1014             child->Freeze();
1015         }
1016     }
1017 }
1018
1019 void wxWindowBase::Thaw()
1020 {
1021     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1022
1023     if ( !--m_freezeCount )
1024     {
1025         // recursively thaw all children:
1026         for ( wxWindowList::iterator i = GetChildren().begin();
1027               i != GetChildren().end(); ++i )
1028         {
1029             wxWindow *child = *i;
1030             if ( child->IsTopLevel() )
1031                 continue;
1032
1033             child->Thaw();
1034         }
1035
1036         // physically thaw this window:
1037         DoThaw();
1038     }
1039 }
1040
1041 // ----------------------------------------------------------------------------
1042 // reparenting the window
1043 // ----------------------------------------------------------------------------
1044
1045 void wxWindowBase::AddChild(wxWindowBase *child)
1046 {
1047     wxCHECK_RET( child, wxT("can't add a NULL child") );
1048
1049     // this should never happen and it will lead to a crash later if it does
1050     // because RemoveChild() will remove only one node from the children list
1051     // and the other(s) one(s) will be left with dangling pointers in them
1052     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1053
1054     GetChildren().Append((wxWindow*)child);
1055     child->SetParent(this);
1056
1057     // adding a child while frozen will assert when thawed, so freeze it as if
1058     // it had been already present when we were frozen
1059     if ( IsFrozen() && !child->IsTopLevel() )
1060         child->Freeze();
1061 }
1062
1063 void wxWindowBase::RemoveChild(wxWindowBase *child)
1064 {
1065     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1066
1067     // removing a child while frozen may result in permanently frozen window
1068     // if used e.g. from Reparent(), so thaw it
1069     //
1070     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1071     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1072     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1073         child->Thaw();
1074
1075     GetChildren().DeleteObject((wxWindow *)child);
1076     child->SetParent(NULL);
1077 }
1078
1079 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1080 {
1081     wxWindow *oldParent = GetParent();
1082     if ( newParent == oldParent )
1083     {
1084         // nothing done
1085         return false;
1086     }
1087
1088     const bool oldEnabledState = IsEnabled();
1089
1090     // unlink this window from the existing parent.
1091     if ( oldParent )
1092     {
1093         oldParent->RemoveChild(this);
1094     }
1095     else
1096     {
1097         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1098     }
1099
1100     // add it to the new one
1101     if ( newParent )
1102     {
1103         newParent->AddChild(this);
1104     }
1105     else
1106     {
1107         wxTopLevelWindows.Append((wxWindow *)this);
1108     }
1109
1110     // We need to notify window (and its subwindows) if by changing the parent
1111     // we also change our enabled/disabled status.
1112     const bool newEnabledState = IsEnabled();
1113     if ( newEnabledState != oldEnabledState )
1114     {
1115         NotifyWindowOnEnableChange(newEnabledState);
1116     }
1117
1118     return true;
1119 }
1120
1121 // ----------------------------------------------------------------------------
1122 // event handler stuff
1123 // ----------------------------------------------------------------------------
1124
1125 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1126 {
1127     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1128
1129     m_eventHandler = handler;
1130 }
1131
1132 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1133 {
1134     // disable wxEvtHandler chain mechanism for wxWindows:
1135     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1136
1137     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1138 }
1139 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1140 {
1141     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1142     // handler of our stack when is destroyed will be Unlink()ed and thus
1143     // will call this function to update the pointer of this window...
1144
1145     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1146 }
1147
1148 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1149 {
1150     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1151
1152     // the new handler is going to be part of the wxWindow stack of event handlers:
1153     // it can't be part also of an event handler double-linked chain:
1154     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1155         "The handler being pushed in the wxWindow stack shouldn't be part of "
1156         "a wxEvtHandler chain; call Unlink() on it first");
1157
1158     wxEvtHandler *handlerOld = GetEventHandler();
1159     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1160
1161     // now use wxEvtHandler double-linked list to implement a stack:
1162     handlerToPush->SetNextHandler(handlerOld);
1163
1164     if (handlerOld != this)
1165         handlerOld->SetPreviousHandler(handlerToPush);
1166
1167     SetEventHandler(handlerToPush);
1168
1169 #if wxDEBUG_LEVEL
1170     // final checks of the operations done above:
1171     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1172         "the first handler of the wxWindow stack should "
1173         "have no previous handlers set" );
1174     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1175         "the first handler of the wxWindow stack should "
1176         "have non-NULL next handler" );
1177
1178     wxEvtHandler* pLast = handlerToPush;
1179     while ( pLast && pLast != this )
1180         pLast = pLast->GetNextHandler();
1181     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1182         "the last handler of the wxWindow stack should "
1183         "have this window as next handler" );
1184 #endif // wxDEBUG_LEVEL
1185 }
1186
1187 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1188 {
1189     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1190
1191     wxEvtHandler *firstHandler = GetEventHandler();
1192     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1193     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1194     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1195         "the first handler of the wxWindow stack should have no previous handlers set" );
1196
1197     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1198     wxCHECK_MSG( secondHandler != NULL, NULL,
1199         "the first handler of the wxWindow stack should have non-NULL next handler" );
1200
1201     firstHandler->SetNextHandler(NULL);
1202     secondHandler->SetPreviousHandler(NULL);
1203
1204     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1205     SetEventHandler(secondHandler);
1206
1207     if ( deleteHandler )
1208     {
1209         delete firstHandler;
1210         firstHandler = NULL;
1211     }
1212
1213     return firstHandler;
1214 }
1215
1216 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1217 {
1218     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1219     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1220
1221     if (handlerToRemove == GetEventHandler())
1222     {
1223         // removing the first event handler is equivalent to "popping" the stack
1224         PopEventHandler(false);
1225         return true;
1226     }
1227
1228     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1229     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1230     while ( handlerCur != this )
1231     {
1232         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1233
1234         if ( handlerCur == handlerToRemove )
1235         {
1236             handlerCur->Unlink();
1237
1238             wxASSERT_MSG( handlerCur != GetEventHandler(),
1239                         "the case Remove == Pop should was already handled" );
1240             return true;
1241         }
1242
1243         handlerCur = handlerNext;
1244     }
1245
1246     wxFAIL_MSG( wxT("where has the event handler gone?") );
1247
1248     return false;
1249 }
1250
1251 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1252 {
1253     // SafelyProcessEvent() will handle exceptions nicely
1254     return GetEventHandler()->SafelyProcessEvent(event);
1255 }
1256
1257 // ----------------------------------------------------------------------------
1258 // colours, fonts &c
1259 // ----------------------------------------------------------------------------
1260
1261 void wxWindowBase::InheritAttributes()
1262 {
1263     const wxWindowBase * const parent = GetParent();
1264     if ( !parent )
1265         return;
1266
1267     // we only inherit attributes which had been explicitly set for the parent
1268     // which ensures that this only happens if the user really wants it and
1269     // not by default which wouldn't make any sense in modern GUIs where the
1270     // controls don't all use the same fonts (nor colours)
1271     if ( parent->m_inheritFont && !m_hasFont )
1272         SetFont(parent->GetFont());
1273
1274     // in addition, there is a possibility to explicitly forbid inheriting
1275     // colours at each class level by overriding ShouldInheritColours()
1276     if ( ShouldInheritColours() )
1277     {
1278         if ( parent->m_inheritFgCol && !m_hasFgCol )
1279             SetForegroundColour(parent->GetForegroundColour());
1280
1281         // inheriting (solid) background colour is wrong as it totally breaks
1282         // any kind of themed backgrounds
1283         //
1284         // instead, the controls should use the same background as their parent
1285         // (ideally by not drawing it at all)
1286 #if 0
1287         if ( parent->m_inheritBgCol && !m_hasBgCol )
1288             SetBackgroundColour(parent->GetBackgroundColour());
1289 #endif // 0
1290     }
1291 }
1292
1293 /* static */ wxVisualAttributes
1294 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1295 {
1296     // it is important to return valid values for all attributes from here,
1297     // GetXXX() below rely on this
1298     wxVisualAttributes attrs;
1299     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1300     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1301
1302     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1303     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1304     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1305     // colour on other platforms.
1306
1307 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1308     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1309 #else
1310     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1311 #endif
1312     return attrs;
1313 }
1314
1315 wxColour wxWindowBase::GetBackgroundColour() const
1316 {
1317     if ( !m_backgroundColour.IsOk() )
1318     {
1319         wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1320
1321         // get our default background colour
1322         wxColour colBg = GetDefaultAttributes().colBg;
1323
1324         // we must return some valid colour to avoid redoing this every time
1325         // and also to avoid surprizing the applications written for older
1326         // wxWidgets versions where GetBackgroundColour() always returned
1327         // something -- so give them something even if it doesn't make sense
1328         // for this window (e.g. it has a themed background)
1329         if ( !colBg.Ok() )
1330             colBg = GetClassDefaultAttributes().colBg;
1331
1332         return colBg;
1333     }
1334     else
1335         return m_backgroundColour;
1336 }
1337
1338 wxColour wxWindowBase::GetForegroundColour() const
1339 {
1340     // logic is the same as above
1341     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1342     {
1343         wxColour colFg = GetDefaultAttributes().colFg;
1344
1345         if ( !colFg.IsOk() )
1346             colFg = GetClassDefaultAttributes().colFg;
1347
1348         return colFg;
1349     }
1350     else
1351         return m_foregroundColour;
1352 }
1353
1354 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1355 {
1356     if ( colour == m_backgroundColour )
1357         return false;
1358
1359     m_hasBgCol = colour.IsOk();
1360
1361     m_inheritBgCol = m_hasBgCol;
1362     m_backgroundColour = colour;
1363     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1364     return true;
1365 }
1366
1367 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1368 {
1369     if (colour == m_foregroundColour )
1370         return false;
1371
1372     m_hasFgCol = colour.IsOk();
1373     m_inheritFgCol = m_hasFgCol;
1374     m_foregroundColour = colour;
1375     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1376     return true;
1377 }
1378
1379 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1380 {
1381     // setting an invalid cursor is ok, it means that we don't have any special
1382     // cursor
1383     if ( m_cursor.IsSameAs(cursor) )
1384     {
1385         // no change
1386         return false;
1387     }
1388
1389     m_cursor = cursor;
1390
1391     return true;
1392 }
1393
1394 wxFont wxWindowBase::GetFont() const
1395 {
1396     // logic is the same as in GetBackgroundColour()
1397     if ( !m_font.IsOk() )
1398     {
1399         wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1400
1401         wxFont font = GetDefaultAttributes().font;
1402         if ( !font.IsOk() )
1403             font = GetClassDefaultAttributes().font;
1404
1405         return font;
1406     }
1407     else
1408         return m_font;
1409 }
1410
1411 bool wxWindowBase::SetFont(const wxFont& font)
1412 {
1413     if ( font == m_font )
1414     {
1415         // no change
1416         return false;
1417     }
1418
1419     m_font = font;
1420     m_hasFont = font.IsOk();
1421     m_inheritFont = m_hasFont;
1422
1423     InvalidateBestSize();
1424
1425     return true;
1426 }
1427
1428 #if wxUSE_PALETTE
1429
1430 void wxWindowBase::SetPalette(const wxPalette& pal)
1431 {
1432     m_hasCustomPalette = true;
1433     m_palette = pal;
1434
1435     // VZ: can anyone explain me what do we do here?
1436     wxWindowDC d((wxWindow *) this);
1437     d.SetPalette(pal);
1438 }
1439
1440 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1441 {
1442     wxWindow *win = (wxWindow *)this;
1443     while ( win && !win->HasCustomPalette() )
1444     {
1445         win = win->GetParent();
1446     }
1447
1448     return win;
1449 }
1450
1451 #endif // wxUSE_PALETTE
1452
1453 #if wxUSE_CARET
1454 void wxWindowBase::SetCaret(wxCaret *caret)
1455 {
1456     if ( m_caret )
1457     {
1458         delete m_caret;
1459     }
1460
1461     m_caret = caret;
1462
1463     if ( m_caret )
1464     {
1465         wxASSERT_MSG( m_caret->GetWindow() == this,
1466                       wxT("caret should be created associated to this window") );
1467     }
1468 }
1469 #endif // wxUSE_CARET
1470
1471 #if wxUSE_VALIDATORS
1472 // ----------------------------------------------------------------------------
1473 // validators
1474 // ----------------------------------------------------------------------------
1475
1476 void wxWindowBase::SetValidator(const wxValidator& validator)
1477 {
1478     if ( m_windowValidator )
1479         delete m_windowValidator;
1480
1481     m_windowValidator = (wxValidator *)validator.Clone();
1482
1483     if ( m_windowValidator )
1484         m_windowValidator->SetWindow(this);
1485 }
1486 #endif // wxUSE_VALIDATORS
1487
1488 // ----------------------------------------------------------------------------
1489 // update region stuff
1490 // ----------------------------------------------------------------------------
1491
1492 wxRect wxWindowBase::GetUpdateClientRect() const
1493 {
1494     wxRegion rgnUpdate = GetUpdateRegion();
1495     rgnUpdate.Intersect(GetClientRect());
1496     wxRect rectUpdate = rgnUpdate.GetBox();
1497     wxPoint ptOrigin = GetClientAreaOrigin();
1498     rectUpdate.x -= ptOrigin.x;
1499     rectUpdate.y -= ptOrigin.y;
1500
1501     return rectUpdate;
1502 }
1503
1504 bool wxWindowBase::DoIsExposed(int x, int y) const
1505 {
1506     return m_updateRegion.Contains(x, y) != wxOutRegion;
1507 }
1508
1509 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1510 {
1511     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1512 }
1513
1514 void wxWindowBase::ClearBackground()
1515 {
1516     // wxGTK uses its own version, no need to add never used code
1517 #ifndef __WXGTK__
1518     wxClientDC dc((wxWindow *)this);
1519     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1520     dc.SetBackground(brush);
1521     dc.Clear();
1522 #endif // __WXGTK__
1523 }
1524
1525 // ----------------------------------------------------------------------------
1526 // find child window by id or name
1527 // ----------------------------------------------------------------------------
1528
1529 wxWindow *wxWindowBase::FindWindow(long id) const
1530 {
1531     if ( id == m_windowId )
1532         return (wxWindow *)this;
1533
1534     wxWindowBase *res = NULL;
1535     wxWindowList::compatibility_iterator node;
1536     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1537     {
1538         wxWindowBase *child = node->GetData();
1539         res = child->FindWindow( id );
1540     }
1541
1542     return (wxWindow *)res;
1543 }
1544
1545 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1546 {
1547     if ( name == m_windowName )
1548         return (wxWindow *)this;
1549
1550     wxWindowBase *res = NULL;
1551     wxWindowList::compatibility_iterator node;
1552     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1553     {
1554         wxWindow *child = node->GetData();
1555         res = child->FindWindow(name);
1556     }
1557
1558     return (wxWindow *)res;
1559 }
1560
1561
1562 // find any window by id or name or label: If parent is non-NULL, look through
1563 // children for a label or title matching the specified string. If NULL, look
1564 // through all top-level windows.
1565 //
1566 // to avoid duplicating code we reuse the same helper function but with
1567 // different comparators
1568
1569 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1570                                 const wxString& label, long id);
1571
1572 static
1573 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1574                            long WXUNUSED(id))
1575 {
1576     return win->GetLabel() == label;
1577 }
1578
1579 static
1580 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1581                           long WXUNUSED(id))
1582 {
1583     return win->GetName() == label;
1584 }
1585
1586 static
1587 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1588                         long id)
1589 {
1590     return win->GetId() == id;
1591 }
1592
1593 // recursive helper for the FindWindowByXXX() functions
1594 static
1595 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1596                                   const wxString& label,
1597                                   long id,
1598                                   wxFindWindowCmp cmp)
1599 {
1600     if ( parent )
1601     {
1602         // see if this is the one we're looking for
1603         if ( (*cmp)(parent, label, id) )
1604             return (wxWindow *)parent;
1605
1606         // It wasn't, so check all its children
1607         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1608               node;
1609               node = node->GetNext() )
1610         {
1611             // recursively check each child
1612             wxWindow *win = (wxWindow *)node->GetData();
1613             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1614             if (retwin)
1615                 return retwin;
1616         }
1617     }
1618
1619     // Not found
1620     return NULL;
1621 }
1622
1623 // helper for FindWindowByXXX()
1624 static
1625 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1626                              const wxString& label,
1627                              long id,
1628                              wxFindWindowCmp cmp)
1629 {
1630     if ( parent )
1631     {
1632         // just check parent and all its children
1633         return wxFindWindowRecursively(parent, label, id, cmp);
1634     }
1635
1636     // start at very top of wx's windows
1637     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1638           node;
1639           node = node->GetNext() )
1640     {
1641         // recursively check each window & its children
1642         wxWindow *win = node->GetData();
1643         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1644         if (retwin)
1645             return retwin;
1646     }
1647
1648     return NULL;
1649 }
1650
1651 /* static */
1652 wxWindow *
1653 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1654 {
1655     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1656 }
1657
1658 /* static */
1659 wxWindow *
1660 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1661 {
1662     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1663
1664     if ( !win )
1665     {
1666         // fall back to the label
1667         win = FindWindowByLabel(title, parent);
1668     }
1669
1670     return win;
1671 }
1672
1673 /* static */
1674 wxWindow *
1675 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1676 {
1677     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1678 }
1679
1680 // ----------------------------------------------------------------------------
1681 // dialog oriented functions
1682 // ----------------------------------------------------------------------------
1683
1684 void wxWindowBase::MakeModal(bool modal)
1685 {
1686     // Disable all other windows
1687     if ( IsTopLevel() )
1688     {
1689         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1690         while (node)
1691         {
1692             wxWindow *win = node->GetData();
1693             if (win != this)
1694                 win->Enable(!modal);
1695
1696             node = node->GetNext();
1697         }
1698     }
1699 }
1700
1701 bool wxWindowBase::Validate()
1702 {
1703 #if wxUSE_VALIDATORS
1704     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1705
1706     wxWindowList::compatibility_iterator node;
1707     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1708     {
1709         wxWindowBase *child = node->GetData();
1710         wxValidator *validator = child->GetValidator();
1711         if ( validator && !validator->Validate((wxWindow *)this) )
1712         {
1713             return false;
1714         }
1715
1716         if ( recurse && !child->Validate() )
1717         {
1718             return false;
1719         }
1720     }
1721 #endif // wxUSE_VALIDATORS
1722
1723     return true;
1724 }
1725
1726 bool wxWindowBase::TransferDataToWindow()
1727 {
1728 #if wxUSE_VALIDATORS
1729     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1730
1731     wxWindowList::compatibility_iterator node;
1732     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1733     {
1734         wxWindowBase *child = node->GetData();
1735         wxValidator *validator = child->GetValidator();
1736         if ( validator && !validator->TransferToWindow() )
1737         {
1738             wxLogWarning(_("Could not transfer data to window"));
1739 #if wxUSE_LOG
1740             wxLog::FlushActive();
1741 #endif // wxUSE_LOG
1742
1743             return false;
1744         }
1745
1746         if ( recurse )
1747         {
1748             if ( !child->TransferDataToWindow() )
1749             {
1750                 // warning already given
1751                 return false;
1752             }
1753         }
1754     }
1755 #endif // wxUSE_VALIDATORS
1756
1757     return true;
1758 }
1759
1760 bool wxWindowBase::TransferDataFromWindow()
1761 {
1762 #if wxUSE_VALIDATORS
1763     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1764
1765     wxWindowList::compatibility_iterator node;
1766     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1767     {
1768         wxWindow *child = node->GetData();
1769         wxValidator *validator = child->GetValidator();
1770         if ( validator && !validator->TransferFromWindow() )
1771         {
1772             // nop warning here because the application is supposed to give
1773             // one itself - we don't know here what might have gone wrongly
1774
1775             return false;
1776         }
1777
1778         if ( recurse )
1779         {
1780             if ( !child->TransferDataFromWindow() )
1781             {
1782                 // warning already given
1783                 return false;
1784             }
1785         }
1786     }
1787 #endif // wxUSE_VALIDATORS
1788
1789     return true;
1790 }
1791
1792 void wxWindowBase::InitDialog()
1793 {
1794     wxInitDialogEvent event(GetId());
1795     event.SetEventObject( this );
1796     GetEventHandler()->ProcessEvent(event);
1797 }
1798
1799 // ----------------------------------------------------------------------------
1800 // context-sensitive help support
1801 // ----------------------------------------------------------------------------
1802
1803 #if wxUSE_HELP
1804
1805 // associate this help text with this window
1806 void wxWindowBase::SetHelpText(const wxString& text)
1807 {
1808     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1809     if ( helpProvider )
1810     {
1811         helpProvider->AddHelp(this, text);
1812     }
1813 }
1814
1815 #if WXWIN_COMPATIBILITY_2_8
1816 // associate this help text with all windows with the same id as this
1817 // one
1818 void wxWindowBase::SetHelpTextForId(const wxString& text)
1819 {
1820     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1821     if ( helpProvider )
1822     {
1823         helpProvider->AddHelp(GetId(), text);
1824     }
1825 }
1826 #endif // WXWIN_COMPATIBILITY_2_8
1827
1828 // get the help string associated with this window (may be empty)
1829 // default implementation forwards calls to the help provider
1830 wxString
1831 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1832                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1833 {
1834     wxString text;
1835     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1836     if ( helpProvider )
1837     {
1838         text = helpProvider->GetHelp(this);
1839     }
1840
1841     return text;
1842 }
1843
1844 // show help for this window
1845 void wxWindowBase::OnHelp(wxHelpEvent& event)
1846 {
1847     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1848     if ( helpProvider )
1849     {
1850         wxPoint pos = event.GetPosition();
1851         const wxHelpEvent::Origin origin = event.GetOrigin();
1852         if ( origin == wxHelpEvent::Origin_Keyboard )
1853         {
1854             // if the help event was generated from keyboard it shouldn't
1855             // appear at the mouse position (which is still the only position
1856             // associated with help event) if the mouse is far away, although
1857             // we still do use the mouse position if it's over the window
1858             // because we suppose the user looks approximately at the mouse
1859             // already and so it would be more convenient than showing tooltip
1860             // at some arbitrary position which can be quite far from it
1861             const wxRect rectClient = GetClientRect();
1862             if ( !rectClient.Contains(ScreenToClient(pos)) )
1863             {
1864                 // position help slightly under and to the right of this window
1865                 pos = ClientToScreen(wxPoint(
1866                         2*GetCharWidth(),
1867                         rectClient.height + GetCharHeight()
1868                       ));
1869             }
1870         }
1871
1872         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1873         {
1874             // skip the event.Skip() below
1875             return;
1876         }
1877     }
1878
1879     event.Skip();
1880 }
1881
1882 #endif // wxUSE_HELP
1883
1884 // ----------------------------------------------------------------------------
1885 // tooltips
1886 // ----------------------------------------------------------------------------
1887
1888 #if wxUSE_TOOLTIPS
1889
1890 wxString wxWindowBase::GetToolTipText() const
1891 {
1892     return m_tooltip ? m_tooltip->GetTip() : wxString();
1893 }
1894
1895 void wxWindowBase::SetToolTip( const wxString &tip )
1896 {
1897     // don't create the new tooltip if we already have one
1898     if ( m_tooltip )
1899     {
1900         m_tooltip->SetTip( tip );
1901     }
1902     else
1903     {
1904         SetToolTip( new wxToolTip( tip ) );
1905     }
1906
1907     // setting empty tooltip text does not remove the tooltip any more - use
1908     // SetToolTip(NULL) for this
1909 }
1910
1911 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1912 {
1913     if ( m_tooltip != tooltip )
1914     {
1915         if ( m_tooltip )
1916             delete m_tooltip;
1917
1918         m_tooltip = tooltip;
1919     }
1920 }
1921
1922 #endif // wxUSE_TOOLTIPS
1923
1924 // ----------------------------------------------------------------------------
1925 // constraints and sizers
1926 // ----------------------------------------------------------------------------
1927
1928 #if wxUSE_CONSTRAINTS
1929
1930 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1931 {
1932     if ( m_constraints )
1933     {
1934         UnsetConstraints(m_constraints);
1935         delete m_constraints;
1936     }
1937     m_constraints = constraints;
1938     if ( m_constraints )
1939     {
1940         // Make sure other windows know they're part of a 'meaningful relationship'
1941         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1942             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1943         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1944             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1945         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1946             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1947         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1948             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1949         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1950             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1951         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1952             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1953         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1954             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1955         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1956             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1957     }
1958 }
1959
1960 // This removes any dangling pointers to this window in other windows'
1961 // constraintsInvolvedIn lists.
1962 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1963 {
1964     if ( c )
1965     {
1966         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1967             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1968         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1969             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1970         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1971             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1972         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1973             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1974         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1975             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1976         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1977             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1978         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1979             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1980         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1981             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1982     }
1983 }
1984
1985 // Back-pointer to other windows we're involved with, so if we delete this
1986 // window, we must delete any constraints we're involved with.
1987 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1988 {
1989     if ( !m_constraintsInvolvedIn )
1990         m_constraintsInvolvedIn = new wxWindowList;
1991     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1992         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1993 }
1994
1995 // REMOVE back-pointer to other windows we're involved with.
1996 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1997 {
1998     if ( m_constraintsInvolvedIn )
1999         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2000 }
2001
2002 // Reset any constraints that mention this window
2003 void wxWindowBase::DeleteRelatedConstraints()
2004 {
2005     if ( m_constraintsInvolvedIn )
2006     {
2007         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2008         while (node)
2009         {
2010             wxWindow *win = node->GetData();
2011             wxLayoutConstraints *constr = win->GetConstraints();
2012
2013             // Reset any constraints involving this window
2014             if ( constr )
2015             {
2016                 constr->left.ResetIfWin(this);
2017                 constr->top.ResetIfWin(this);
2018                 constr->right.ResetIfWin(this);
2019                 constr->bottom.ResetIfWin(this);
2020                 constr->width.ResetIfWin(this);
2021                 constr->height.ResetIfWin(this);
2022                 constr->centreX.ResetIfWin(this);
2023                 constr->centreY.ResetIfWin(this);
2024             }
2025
2026             wxWindowList::compatibility_iterator next = node->GetNext();
2027             m_constraintsInvolvedIn->Erase(node);
2028             node = next;
2029         }
2030
2031         delete m_constraintsInvolvedIn;
2032         m_constraintsInvolvedIn = NULL;
2033     }
2034 }
2035
2036 #endif // wxUSE_CONSTRAINTS
2037
2038 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2039 {
2040     if ( sizer == m_windowSizer)
2041         return;
2042
2043     if ( m_windowSizer )
2044     {
2045         m_windowSizer->SetContainingWindow(NULL);
2046
2047         if ( deleteOld )
2048             delete m_windowSizer;
2049     }
2050
2051     m_windowSizer = sizer;
2052     if ( m_windowSizer )
2053     {
2054         m_windowSizer->SetContainingWindow((wxWindow *)this);
2055     }
2056
2057     SetAutoLayout(m_windowSizer != NULL);
2058 }
2059
2060 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2061 {
2062     SetSizer( sizer, deleteOld );
2063     sizer->SetSizeHints( (wxWindow*) this );
2064 }
2065
2066
2067 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2068 {
2069     // adding a window to a sizer twice is going to result in fatal and
2070     // hard to debug problems later because when deleting the second
2071     // associated wxSizerItem we're going to dereference a dangling
2072     // pointer; so try to detect this as early as possible
2073     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2074                   wxT("Adding a window to the same sizer twice?") );
2075
2076     m_containingSizer = sizer;
2077 }
2078
2079 #if wxUSE_CONSTRAINTS
2080
2081 void wxWindowBase::SatisfyConstraints()
2082 {
2083     wxLayoutConstraints *constr = GetConstraints();
2084     bool wasOk = constr && constr->AreSatisfied();
2085
2086     ResetConstraints();   // Mark all constraints as unevaluated
2087
2088     int noChanges = 1;
2089
2090     // if we're a top level panel (i.e. our parent is frame/dialog), our
2091     // own constraints will never be satisfied any more unless we do it
2092     // here
2093     if ( wasOk )
2094     {
2095         while ( noChanges > 0 )
2096         {
2097             LayoutPhase1(&noChanges);
2098         }
2099     }
2100
2101     LayoutPhase2(&noChanges);
2102 }
2103
2104 #endif // wxUSE_CONSTRAINTS
2105
2106 bool wxWindowBase::Layout()
2107 {
2108     // If there is a sizer, use it instead of the constraints
2109     if ( GetSizer() )
2110     {
2111         int w = 0, h = 0;
2112         GetVirtualSize(&w, &h);
2113         GetSizer()->SetDimension( 0, 0, w, h );
2114     }
2115 #if wxUSE_CONSTRAINTS
2116     else
2117     {
2118         SatisfyConstraints(); // Find the right constraints values
2119         SetConstraintSizes(); // Recursively set the real window sizes
2120     }
2121 #endif
2122
2123     return true;
2124 }
2125
2126 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2127 {
2128     if ( GetAutoLayout() )
2129         Layout();
2130
2131     event.Skip();
2132 }
2133
2134 #if wxUSE_CONSTRAINTS
2135
2136 // first phase of the constraints evaluation: set our own constraints
2137 bool wxWindowBase::LayoutPhase1(int *noChanges)
2138 {
2139     wxLayoutConstraints *constr = GetConstraints();
2140
2141     return !constr || constr->SatisfyConstraints(this, noChanges);
2142 }
2143
2144 // second phase: set the constraints for our children
2145 bool wxWindowBase::LayoutPhase2(int *noChanges)
2146 {
2147     *noChanges = 0;
2148
2149     // Layout children
2150     DoPhase(1);
2151
2152     // Layout grand children
2153     DoPhase(2);
2154
2155     return true;
2156 }
2157
2158 // Do a phase of evaluating child constraints
2159 bool wxWindowBase::DoPhase(int phase)
2160 {
2161     // the list containing the children for which the constraints are already
2162     // set correctly
2163     wxWindowList succeeded;
2164
2165     // the max number of iterations we loop before concluding that we can't set
2166     // the constraints
2167     static const int maxIterations = 500;
2168
2169     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2170     {
2171         int noChanges = 0;
2172
2173         // loop over all children setting their constraints
2174         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2175               node;
2176               node = node->GetNext() )
2177         {
2178             wxWindow *child = node->GetData();
2179             if ( child->IsTopLevel() )
2180             {
2181                 // top level children are not inside our client area
2182                 continue;
2183             }
2184
2185             if ( !child->GetConstraints() || succeeded.Find(child) )
2186             {
2187                 // this one is either already ok or nothing we can do about it
2188                 continue;
2189             }
2190
2191             int tempNoChanges = 0;
2192             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2193                                       : child->LayoutPhase2(&tempNoChanges);
2194             noChanges += tempNoChanges;
2195
2196             if ( success )
2197             {
2198                 succeeded.Append(child);
2199             }
2200         }
2201
2202         if ( !noChanges )
2203         {
2204             // constraints are set
2205             break;
2206         }
2207     }
2208
2209     return true;
2210 }
2211
2212 void wxWindowBase::ResetConstraints()
2213 {
2214     wxLayoutConstraints *constr = GetConstraints();
2215     if ( constr )
2216     {
2217         constr->left.SetDone(false);
2218         constr->top.SetDone(false);
2219         constr->right.SetDone(false);
2220         constr->bottom.SetDone(false);
2221         constr->width.SetDone(false);
2222         constr->height.SetDone(false);
2223         constr->centreX.SetDone(false);
2224         constr->centreY.SetDone(false);
2225     }
2226
2227     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2228     while (node)
2229     {
2230         wxWindow *win = node->GetData();
2231         if ( !win->IsTopLevel() )
2232             win->ResetConstraints();
2233         node = node->GetNext();
2234     }
2235 }
2236
2237 // Need to distinguish between setting the 'fake' size for windows and sizers,
2238 // and setting the real values.
2239 void wxWindowBase::SetConstraintSizes(bool recurse)
2240 {
2241     wxLayoutConstraints *constr = GetConstraints();
2242     if ( constr && constr->AreSatisfied() )
2243     {
2244         int x = constr->left.GetValue();
2245         int y = constr->top.GetValue();
2246         int w = constr->width.GetValue();
2247         int h = constr->height.GetValue();
2248
2249         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2250              (constr->height.GetRelationship() != wxAsIs) )
2251         {
2252             SetSize(x, y, w, h);
2253         }
2254         else
2255         {
2256             // If we don't want to resize this window, just move it...
2257             Move(x, y);
2258         }
2259     }
2260     else if ( constr )
2261     {
2262         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2263                    GetClassInfo()->GetClassName(),
2264                    GetName().c_str());
2265     }
2266
2267     if ( recurse )
2268     {
2269         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2270         while (node)
2271         {
2272             wxWindow *win = node->GetData();
2273             if ( !win->IsTopLevel() && win->GetConstraints() )
2274                 win->SetConstraintSizes();
2275             node = node->GetNext();
2276         }
2277     }
2278 }
2279
2280 // Only set the size/position of the constraint (if any)
2281 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2282 {
2283     wxLayoutConstraints *constr = GetConstraints();
2284     if ( constr )
2285     {
2286         if ( x != wxDefaultCoord )
2287         {
2288             constr->left.SetValue(x);
2289             constr->left.SetDone(true);
2290         }
2291         if ( y != wxDefaultCoord )
2292         {
2293             constr->top.SetValue(y);
2294             constr->top.SetDone(true);
2295         }
2296         if ( w != wxDefaultCoord )
2297         {
2298             constr->width.SetValue(w);
2299             constr->width.SetDone(true);
2300         }
2301         if ( h != wxDefaultCoord )
2302         {
2303             constr->height.SetValue(h);
2304             constr->height.SetDone(true);
2305         }
2306     }
2307 }
2308
2309 void wxWindowBase::MoveConstraint(int x, int y)
2310 {
2311     wxLayoutConstraints *constr = GetConstraints();
2312     if ( constr )
2313     {
2314         if ( x != wxDefaultCoord )
2315         {
2316             constr->left.SetValue(x);
2317             constr->left.SetDone(true);
2318         }
2319         if ( y != wxDefaultCoord )
2320         {
2321             constr->top.SetValue(y);
2322             constr->top.SetDone(true);
2323         }
2324     }
2325 }
2326
2327 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2328 {
2329     wxLayoutConstraints *constr = GetConstraints();
2330     if ( constr )
2331     {
2332         *w = constr->width.GetValue();
2333         *h = constr->height.GetValue();
2334     }
2335     else
2336         GetSize(w, h);
2337 }
2338
2339 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2340 {
2341     wxLayoutConstraints *constr = GetConstraints();
2342     if ( constr )
2343     {
2344         *w = constr->width.GetValue();
2345         *h = constr->height.GetValue();
2346     }
2347     else
2348         GetClientSize(w, h);
2349 }
2350
2351 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2352 {
2353     wxLayoutConstraints *constr = GetConstraints();
2354     if ( constr )
2355     {
2356         *x = constr->left.GetValue();
2357         *y = constr->top.GetValue();
2358     }
2359     else
2360         GetPosition(x, y);
2361 }
2362
2363 #endif // wxUSE_CONSTRAINTS
2364
2365 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2366 {
2367     // don't do it for the dialogs/frames - they float independently of their
2368     // parent
2369     if ( !IsTopLevel() )
2370     {
2371         wxWindow *parent = GetParent();
2372         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2373         {
2374             wxPoint pt(parent->GetClientAreaOrigin());
2375             x += pt.x;
2376             y += pt.y;
2377         }
2378     }
2379 }
2380
2381 // ----------------------------------------------------------------------------
2382 // Update UI processing
2383 // ----------------------------------------------------------------------------
2384
2385 void wxWindowBase::UpdateWindowUI(long flags)
2386 {
2387     wxUpdateUIEvent event(GetId());
2388     event.SetEventObject(this);
2389
2390     if ( GetEventHandler()->ProcessEvent(event) )
2391     {
2392         DoUpdateWindowUI(event);
2393     }
2394
2395     if (flags & wxUPDATE_UI_RECURSE)
2396     {
2397         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2398         while (node)
2399         {
2400             wxWindow* child = (wxWindow*) node->GetData();
2401             child->UpdateWindowUI(flags);
2402             node = node->GetNext();
2403         }
2404     }
2405 }
2406
2407 // do the window-specific processing after processing the update event
2408 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2409 {
2410     if ( event.GetSetEnabled() )
2411         Enable(event.GetEnabled());
2412
2413     if ( event.GetSetShown() )
2414         Show(event.GetShown());
2415 }
2416
2417 // ----------------------------------------------------------------------------
2418 // dialog units translations
2419 // ----------------------------------------------------------------------------
2420
2421 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2422 {
2423     int charWidth = GetCharWidth();
2424     int charHeight = GetCharHeight();
2425     wxPoint pt2 = wxDefaultPosition;
2426     if (pt.x != wxDefaultCoord)
2427         pt2.x = (int) ((pt.x * 4) / charWidth);
2428     if (pt.y != wxDefaultCoord)
2429         pt2.y = (int) ((pt.y * 8) / charHeight);
2430
2431     return pt2;
2432 }
2433
2434 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2435 {
2436     int charWidth = GetCharWidth();
2437     int charHeight = GetCharHeight();
2438     wxPoint pt2 = wxDefaultPosition;
2439     if (pt.x != wxDefaultCoord)
2440         pt2.x = (int) ((pt.x * charWidth) / 4);
2441     if (pt.y != wxDefaultCoord)
2442         pt2.y = (int) ((pt.y * charHeight) / 8);
2443
2444     return pt2;
2445 }
2446
2447 // ----------------------------------------------------------------------------
2448 // event handlers
2449 // ----------------------------------------------------------------------------
2450
2451 // propagate the colour change event to the subwindows
2452 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2453 {
2454     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2455     while ( node )
2456     {
2457         // Only propagate to non-top-level windows
2458         wxWindow *win = node->GetData();
2459         if ( !win->IsTopLevel() )
2460         {
2461             wxSysColourChangedEvent event2;
2462             event.SetEventObject(win);
2463             win->GetEventHandler()->ProcessEvent(event2);
2464         }
2465
2466         node = node->GetNext();
2467     }
2468
2469     Refresh();
2470 }
2471
2472 // the default action is to populate dialog with data when it's created,
2473 // and nudge the UI into displaying itself correctly in case
2474 // we've turned the wxUpdateUIEvents frequency down low.
2475 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2476 {
2477     TransferDataToWindow();
2478
2479     // Update the UI at this point
2480     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2481 }
2482
2483 // ----------------------------------------------------------------------------
2484 // menu-related functions
2485 // ----------------------------------------------------------------------------
2486
2487 #if wxUSE_MENUS
2488
2489 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2490 {
2491     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2492
2493     wxCurrentPopupMenu = menu;
2494     const bool rc = DoPopupMenu(menu, x, y);
2495     wxCurrentPopupMenu = NULL;
2496
2497     return rc;
2498 }
2499
2500 // this is used to pass the id of the selected item from the menu event handler
2501 // to the main function itself
2502 //
2503 // it's ok to use a global here as there can be at most one popup menu shown at
2504 // any time
2505 static int gs_popupMenuSelection = wxID_NONE;
2506
2507 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2508 {
2509     // store the id in a global variable where we'll retrieve it from later
2510     gs_popupMenuSelection = event.GetId();
2511 }
2512
2513 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2514 {
2515     // nothing to do but do not skip it
2516 }
2517
2518 int
2519 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2520 {
2521     gs_popupMenuSelection = wxID_NONE;
2522
2523     Connect(wxEVT_COMMAND_MENU_SELECTED,
2524             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2525             NULL,
2526             this);
2527
2528     // it is common to construct the menu passed to this function dynamically
2529     // using some fixed range of ids which could clash with the ids used
2530     // elsewhere in the program, which could result in some menu items being
2531     // unintentionally disabled or otherwise modified by update UI handlers
2532     // elsewhere in the program code and this is difficult to avoid in the
2533     // program itself, so instead we just temporarily suspend UI updating while
2534     // this menu is shown
2535     Connect(wxEVT_UPDATE_UI,
2536             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2537             NULL,
2538             this);
2539
2540     PopupMenu(&menu, x, y);
2541
2542     Disconnect(wxEVT_UPDATE_UI,
2543                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2544                NULL,
2545                this);
2546     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2547                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2548                NULL,
2549                this);
2550
2551     return gs_popupMenuSelection;
2552 }
2553
2554 #endif // wxUSE_MENUS
2555
2556 // methods for drawing the sizers in a visible way: this is currently only
2557 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2558 // that well and also because we don't want to leave it enabled in default
2559 // builds used for production
2560 #if wxDEBUG_LEVEL > 1
2561
2562 static void DrawSizers(wxWindowBase *win);
2563
2564 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2565 {
2566     wxClientDC dc((wxWindow *)win);
2567     dc.SetPen(*pen);
2568     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2569                        *wxTRANSPARENT_BRUSH);
2570     dc.DrawRectangle(rect.Deflate(1, 1));
2571 }
2572
2573 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2574 {
2575     const wxSizerItemList& items = sizer->GetChildren();
2576     for ( wxSizerItemList::const_iterator i = items.begin(),
2577                                         end = items.end();
2578           i != end;
2579           ++i )
2580     {
2581         wxSizerItem *item = *i;
2582         if ( item->IsSizer() )
2583         {
2584             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2585             DrawSizer(win, item->GetSizer());
2586         }
2587         else if ( item->IsSpacer() )
2588         {
2589             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2590         }
2591         else if ( item->IsWindow() )
2592         {
2593             DrawSizers(item->GetWindow());
2594         }
2595         else
2596             wxFAIL_MSG("inconsistent wxSizerItem status!");
2597     }
2598 }
2599
2600 static void DrawSizers(wxWindowBase *win)
2601 {
2602     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2603
2604     wxSizer *sizer = win->GetSizer();
2605     if ( sizer )
2606     {
2607         DrawSizer(win, sizer);
2608     }
2609     else // no sizer, still recurse into the children
2610     {
2611         const wxWindowList& children = win->GetChildren();
2612         for ( wxWindowList::const_iterator i = children.begin(),
2613                                          end = children.end();
2614               i != end;
2615               ++i )
2616         {
2617             DrawSizers(*i);
2618         }
2619
2620         // show all kind of sizes of this window; see the "window sizing" topic
2621         // overview for more info about the various differences:
2622         wxSize fullSz = win->GetSize();
2623         wxSize clientSz = win->GetClientSize();
2624         wxSize bestSz = win->GetBestSize();
2625         wxSize minSz = win->GetMinSize();
2626         wxSize maxSz = win->GetMaxSize();
2627         wxSize virtualSz = win->GetVirtualSize();
2628
2629         wxMessageOutputDebug dbgout;
2630         dbgout.Printf(
2631             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2632             win->GetName(),
2633             fullSz.x, fullSz.y,
2634             clientSz.x, clientSz.y,
2635             bestSz.x, bestSz.y,
2636             minSz.x, minSz.y,
2637             maxSz.x, maxSz.y,
2638             virtualSz.x, virtualSz.y);
2639     }
2640 }
2641
2642 #endif // wxDEBUG_LEVEL
2643
2644 // process special middle clicks
2645 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2646 {
2647     if ( event.ControlDown() && event.AltDown() )
2648     {
2649 #if wxDEBUG_LEVEL > 1
2650         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2651         if ( event.ShiftDown() )
2652         {
2653             DrawSizers(this);
2654         }
2655         else
2656 #endif // __WXDEBUG__
2657         {
2658             // just Ctrl-Alt-middle click shows information about wx version
2659             ::wxInfoMessageBox((wxWindow*)this);
2660         }
2661     }
2662     else
2663     {
2664         event.Skip();
2665     }
2666 }
2667
2668 // ----------------------------------------------------------------------------
2669 // accessibility
2670 // ----------------------------------------------------------------------------
2671
2672 #if wxUSE_ACCESSIBILITY
2673 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2674 {
2675     if (m_accessible && (accessible != m_accessible))
2676         delete m_accessible;
2677     m_accessible = accessible;
2678     if (m_accessible)
2679         m_accessible->SetWindow((wxWindow*) this);
2680 }
2681
2682 // Returns the accessible object, creating if necessary.
2683 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2684 {
2685     if (!m_accessible)
2686         m_accessible = CreateAccessible();
2687     return m_accessible;
2688 }
2689
2690 // Override to create a specific accessible object.
2691 wxAccessible* wxWindowBase::CreateAccessible()
2692 {
2693     return new wxWindowAccessible((wxWindow*) this);
2694 }
2695
2696 #endif
2697
2698 // ----------------------------------------------------------------------------
2699 // list classes implementation
2700 // ----------------------------------------------------------------------------
2701
2702 #if wxUSE_STL
2703
2704 #include "wx/listimpl.cpp"
2705 WX_DEFINE_LIST(wxWindowList)
2706
2707 #else // !wxUSE_STL
2708
2709 void wxWindowListNode::DeleteData()
2710 {
2711     delete (wxWindow *)GetData();
2712 }
2713
2714 #endif // wxUSE_STL/!wxUSE_STL
2715
2716 // ----------------------------------------------------------------------------
2717 // borders
2718 // ----------------------------------------------------------------------------
2719
2720 wxBorder wxWindowBase::GetBorder(long flags) const
2721 {
2722     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2723     if ( border == wxBORDER_DEFAULT )
2724     {
2725         border = GetDefaultBorder();
2726     }
2727     else if ( border == wxBORDER_THEME )
2728     {
2729         border = GetDefaultBorderForControl();
2730     }
2731
2732     return border;
2733 }
2734
2735 wxBorder wxWindowBase::GetDefaultBorder() const
2736 {
2737     return wxBORDER_NONE;
2738 }
2739
2740 // ----------------------------------------------------------------------------
2741 // hit testing
2742 // ----------------------------------------------------------------------------
2743
2744 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2745 {
2746     // here we just check if the point is inside the window or not
2747
2748     // check the top and left border first
2749     bool outside = x < 0 || y < 0;
2750     if ( !outside )
2751     {
2752         // check the right and bottom borders too
2753         wxSize size = GetSize();
2754         outside = x >= size.x || y >= size.y;
2755     }
2756
2757     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2758 }
2759
2760 // ----------------------------------------------------------------------------
2761 // mouse capture
2762 // ----------------------------------------------------------------------------
2763
2764 struct WXDLLEXPORT wxWindowNext
2765 {
2766     wxWindow *win;
2767     wxWindowNext *next;
2768 } *wxWindowBase::ms_winCaptureNext = NULL;
2769 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2770 bool wxWindowBase::ms_winCaptureChanging = false;
2771
2772 void wxWindowBase::CaptureMouse()
2773 {
2774     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2775
2776     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2777
2778     ms_winCaptureChanging = true;
2779
2780     wxWindow *winOld = GetCapture();
2781     if ( winOld )
2782     {
2783         ((wxWindowBase*) winOld)->DoReleaseMouse();
2784
2785         // save it on stack
2786         wxWindowNext *item = new wxWindowNext;
2787         item->win = winOld;
2788         item->next = ms_winCaptureNext;
2789         ms_winCaptureNext = item;
2790     }
2791     //else: no mouse capture to save
2792
2793     DoCaptureMouse();
2794     ms_winCaptureCurrent = (wxWindow*)this;
2795
2796     ms_winCaptureChanging = false;
2797 }
2798
2799 void wxWindowBase::ReleaseMouse()
2800 {
2801     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2802
2803     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2804
2805     wxASSERT_MSG( GetCapture() == this,
2806                   "attempt to release mouse, but this window hasn't captured it" );
2807     wxASSERT_MSG( ms_winCaptureCurrent == this,
2808                   "attempt to release mouse, but this window hasn't captured it" );
2809
2810     ms_winCaptureChanging = true;
2811
2812     DoReleaseMouse();
2813     ms_winCaptureCurrent = NULL;
2814
2815     if ( ms_winCaptureNext )
2816     {
2817         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2818         ms_winCaptureCurrent = ms_winCaptureNext->win;
2819
2820         wxWindowNext *item = ms_winCaptureNext;
2821         ms_winCaptureNext = item->next;
2822         delete item;
2823     }
2824     //else: stack is empty, no previous capture
2825
2826     ms_winCaptureChanging = false;
2827
2828     wxLogTrace(wxT("mousecapture"),
2829         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2830         static_cast<void*>(GetCapture()));
2831 }
2832
2833 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2834 {
2835     wxMouseCaptureLostEvent event(win->GetId());
2836     event.SetEventObject(win);
2837     if ( !win->GetEventHandler()->ProcessEvent(event) )
2838     {
2839         // windows must handle this event, otherwise the app wouldn't behave
2840         // correctly if it loses capture unexpectedly; see the discussion here:
2841         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2842         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2843         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2844     }
2845 }
2846
2847 /* static */
2848 void wxWindowBase::NotifyCaptureLost()
2849 {
2850     // don't do anything if capture lost was expected, i.e. resulted from
2851     // a wx call to ReleaseMouse or CaptureMouse:
2852     if ( ms_winCaptureChanging )
2853         return;
2854
2855     // if the capture was lost unexpectedly, notify every window that has
2856     // capture (on stack or current) about it and clear the stack:
2857
2858     if ( ms_winCaptureCurrent )
2859     {
2860         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2861         ms_winCaptureCurrent = NULL;
2862     }
2863
2864     while ( ms_winCaptureNext )
2865     {
2866         wxWindowNext *item = ms_winCaptureNext;
2867         ms_winCaptureNext = item->next;
2868
2869         DoNotifyWindowAboutCaptureLost(item->win);
2870
2871         delete item;
2872     }
2873 }
2874
2875 #if wxUSE_HOTKEY
2876
2877 bool
2878 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2879                              int WXUNUSED(modifiers),
2880                              int WXUNUSED(keycode))
2881 {
2882     // not implemented
2883     return false;
2884 }
2885
2886 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2887 {
2888     // not implemented
2889     return false;
2890 }
2891
2892 #endif // wxUSE_HOTKEY
2893
2894 // ----------------------------------------------------------------------------
2895 // event processing
2896 // ----------------------------------------------------------------------------
2897
2898 bool wxWindowBase::TryBefore(wxEvent& event)
2899 {
2900 #if wxUSE_VALIDATORS
2901     // Can only use the validator of the window which
2902     // is receiving the event
2903     if ( event.GetEventObject() == this )
2904     {
2905         wxValidator * const validator = GetValidator();
2906         if ( validator && validator->ProcessEventHere(event) )
2907         {
2908             return true;
2909         }
2910     }
2911 #endif // wxUSE_VALIDATORS
2912
2913     return wxEvtHandler::TryBefore(event);
2914 }
2915
2916 bool wxWindowBase::TryAfter(wxEvent& event)
2917 {
2918     // carry on up the parent-child hierarchy if the propagation count hasn't
2919     // reached zero yet
2920     if ( event.ShouldPropagate() )
2921     {
2922         // honour the requests to stop propagation at this window: this is
2923         // used by the dialogs, for example, to prevent processing the events
2924         // from the dialog controls in the parent frame which rarely, if ever,
2925         // makes sense
2926         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2927         {
2928             wxWindow *parent = GetParent();
2929             if ( parent && !parent->IsBeingDeleted() )
2930             {
2931                 wxPropagateOnce propagateOnce(event);
2932
2933                 return parent->GetEventHandler()->ProcessEvent(event);
2934             }
2935         }
2936     }
2937
2938     return wxEvtHandler::TryAfter(event);
2939 }
2940
2941 // ----------------------------------------------------------------------------
2942 // window relationships
2943 // ----------------------------------------------------------------------------
2944
2945 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2946 {
2947     wxCHECK_MSG( GetParent(), NULL,
2948                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
2949
2950     wxWindowList& siblings = GetParent()->GetChildren();
2951     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2952     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
2953
2954     if ( order == OrderBefore )
2955         i = i->GetPrevious();
2956     else // OrderAfter
2957         i = i->GetNext();
2958
2959     return i ? i->GetData() : NULL;
2960 }
2961
2962 // ----------------------------------------------------------------------------
2963 // keyboard navigation
2964 // ----------------------------------------------------------------------------
2965
2966 // Navigates in the specified direction inside this window
2967 bool wxWindowBase::DoNavigateIn(int flags)
2968 {
2969 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2970     // native code doesn't process our wxNavigationKeyEvents anyhow
2971     wxUnusedVar(flags);
2972     return false;
2973 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2974     wxNavigationKeyEvent eventNav;
2975     wxWindow *focused = FindFocus();
2976     eventNav.SetCurrentFocus(focused);
2977     eventNav.SetEventObject(focused);
2978     eventNav.SetFlags(flags);
2979     return GetEventHandler()->ProcessEvent(eventNav);
2980 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2981 }
2982
2983 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2984 {
2985     if ( event.GetKeyCode() != WXK_TAB )
2986         return false;
2987
2988     int flags = wxNavigationKeyEvent::FromTab;
2989
2990     if ( event.ShiftDown() )
2991         flags |= wxNavigationKeyEvent::IsBackward;
2992     else
2993         flags |= wxNavigationKeyEvent::IsForward;
2994
2995     if ( event.ControlDown() )
2996         flags |= wxNavigationKeyEvent::WinChange;
2997
2998     Navigate(flags);
2999     return true;
3000 }
3001
3002 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3003 {
3004     // check that we're not a top level window
3005     wxCHECK_RET( GetParent(),
3006                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3007
3008     // detect the special case when we have nothing to do anyhow and when the
3009     // code below wouldn't work
3010     if ( win == this )
3011         return;
3012
3013     // find the target window in the siblings list
3014     wxWindowList& siblings = GetParent()->GetChildren();
3015     wxWindowList::compatibility_iterator i = siblings.Find(win);
3016     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3017
3018     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3019     // can't just move the node around
3020     wxWindow *self = (wxWindow *)this;
3021     siblings.DeleteObject(self);
3022     if ( move == OrderAfter )
3023     {
3024         i = i->GetNext();
3025     }
3026
3027     if ( i )
3028     {
3029         siblings.Insert(i, self);
3030     }
3031     else // OrderAfter and win was the last sibling
3032     {
3033         siblings.Append(self);
3034     }
3035 }
3036
3037 // ----------------------------------------------------------------------------
3038 // focus handling
3039 // ----------------------------------------------------------------------------
3040
3041 /*static*/ wxWindow* wxWindowBase::FindFocus()
3042 {
3043     wxWindowBase *win = DoFindFocus();
3044     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3045 }
3046
3047 bool wxWindowBase::HasFocus() const
3048 {
3049     wxWindowBase *win = DoFindFocus();
3050     return win == this ||
3051            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3052 }
3053
3054 // ----------------------------------------------------------------------------
3055 // drag and drop
3056 // ----------------------------------------------------------------------------
3057
3058 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3059
3060 namespace
3061 {
3062
3063 class DragAcceptFilesTarget : public wxFileDropTarget
3064 {
3065 public:
3066     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3067
3068     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3069                              const wxArrayString& filenames)
3070     {
3071         wxDropFilesEvent event(wxEVT_DROP_FILES,
3072                                filenames.size(),
3073                                wxCArrayString(filenames).Release());
3074         event.SetEventObject(m_win);
3075         event.m_pos.x = x;
3076         event.m_pos.y = y;
3077
3078         return m_win->HandleWindowEvent(event);
3079     }
3080
3081 private:
3082     wxWindowBase * const m_win;
3083
3084     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3085 };
3086
3087
3088 } // anonymous namespace
3089
3090 // Generic version of DragAcceptFiles(). It works by installing a simple
3091 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3092 // together with explicit SetDropTarget() calls.
3093 void wxWindowBase::DragAcceptFiles(bool accept)
3094 {
3095     if ( accept )
3096     {
3097         wxASSERT_MSG( !GetDropTarget(),
3098                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3099         SetDropTarget(new DragAcceptFilesTarget(this));
3100     }
3101     else
3102     {
3103         SetDropTarget(NULL);
3104     }
3105 }
3106
3107 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3108
3109 // ----------------------------------------------------------------------------
3110 // global functions
3111 // ----------------------------------------------------------------------------
3112
3113 wxWindow* wxGetTopLevelParent(wxWindow *win)
3114 {
3115     while ( win && !win->IsTopLevel() )
3116          win = win->GetParent();
3117
3118     return win;
3119 }
3120
3121 #if wxUSE_ACCESSIBILITY
3122 // ----------------------------------------------------------------------------
3123 // accessible object for windows
3124 // ----------------------------------------------------------------------------
3125
3126 // Can return either a child object, or an integer
3127 // representing the child element, starting from 1.
3128 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3129 {
3130     wxASSERT( GetWindow() != NULL );
3131     if (!GetWindow())
3132         return wxACC_FAIL;
3133
3134     return wxACC_NOT_IMPLEMENTED;
3135 }
3136
3137 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3138 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3139 {
3140     wxASSERT( GetWindow() != NULL );
3141     if (!GetWindow())
3142         return wxACC_FAIL;
3143
3144     wxWindow* win = NULL;
3145     if (elementId == 0)
3146     {
3147         win = GetWindow();
3148     }
3149     else
3150     {
3151         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3152         {
3153             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3154         }
3155         else
3156             return wxACC_FAIL;
3157     }
3158     if (win)
3159     {
3160         rect = win->GetRect();
3161         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3162             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3163         return wxACC_OK;
3164     }
3165
3166     return wxACC_NOT_IMPLEMENTED;
3167 }
3168
3169 // Navigates from fromId to toId/toObject.
3170 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3171                              int* WXUNUSED(toId), wxAccessible** toObject)
3172 {
3173     wxASSERT( GetWindow() != NULL );
3174     if (!GetWindow())
3175         return wxACC_FAIL;
3176
3177     switch (navDir)
3178     {
3179     case wxNAVDIR_FIRSTCHILD:
3180         {
3181             if (GetWindow()->GetChildren().GetCount() == 0)
3182                 return wxACC_FALSE;
3183             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3184             *toObject = childWindow->GetOrCreateAccessible();
3185
3186             return wxACC_OK;
3187         }
3188     case wxNAVDIR_LASTCHILD:
3189         {
3190             if (GetWindow()->GetChildren().GetCount() == 0)
3191                 return wxACC_FALSE;
3192             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3193             *toObject = childWindow->GetOrCreateAccessible();
3194
3195             return wxACC_OK;
3196         }
3197     case wxNAVDIR_RIGHT:
3198     case wxNAVDIR_DOWN:
3199     case wxNAVDIR_NEXT:
3200         {
3201             wxWindowList::compatibility_iterator node =
3202                 wxWindowList::compatibility_iterator();
3203             if (fromId == 0)
3204             {
3205                 // Can't navigate to sibling of this window
3206                 // if we're a top-level window.
3207                 if (!GetWindow()->GetParent())
3208                     return wxACC_NOT_IMPLEMENTED;
3209
3210                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3211             }
3212             else
3213             {
3214                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3215                     node = GetWindow()->GetChildren().Item(fromId-1);
3216             }
3217
3218             if (node && node->GetNext())
3219             {
3220                 wxWindow* nextWindow = node->GetNext()->GetData();
3221                 *toObject = nextWindow->GetOrCreateAccessible();
3222                 return wxACC_OK;
3223             }
3224             else
3225                 return wxACC_FALSE;
3226         }
3227     case wxNAVDIR_LEFT:
3228     case wxNAVDIR_UP:
3229     case wxNAVDIR_PREVIOUS:
3230         {
3231             wxWindowList::compatibility_iterator node =
3232                 wxWindowList::compatibility_iterator();
3233             if (fromId == 0)
3234             {
3235                 // Can't navigate to sibling of this window
3236                 // if we're a top-level window.
3237                 if (!GetWindow()->GetParent())
3238                     return wxACC_NOT_IMPLEMENTED;
3239
3240                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3241             }
3242             else
3243             {
3244                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3245                     node = GetWindow()->GetChildren().Item(fromId-1);
3246             }
3247
3248             if (node && node->GetPrevious())
3249             {
3250                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3251                 *toObject = previousWindow->GetOrCreateAccessible();
3252                 return wxACC_OK;
3253             }
3254             else
3255                 return wxACC_FALSE;
3256         }
3257     }
3258
3259     return wxACC_NOT_IMPLEMENTED;
3260 }
3261
3262 // Gets the name of the specified object.
3263 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3264 {
3265     wxASSERT( GetWindow() != NULL );
3266     if (!GetWindow())
3267         return wxACC_FAIL;
3268
3269     wxString title;
3270
3271     // If a child, leave wxWidgets to call the function on the actual
3272     // child object.
3273     if (childId > 0)
3274         return wxACC_NOT_IMPLEMENTED;
3275
3276     // This will eventually be replaced by specialised
3277     // accessible classes, one for each kind of wxWidgets
3278     // control or window.
3279 #if wxUSE_BUTTON
3280     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3281         title = ((wxButton*) GetWindow())->GetLabel();
3282     else
3283 #endif
3284         title = GetWindow()->GetName();
3285
3286     if (!title.empty())
3287     {
3288         *name = title;
3289         return wxACC_OK;
3290     }
3291     else
3292         return wxACC_NOT_IMPLEMENTED;
3293 }
3294
3295 // Gets the number of children.
3296 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3297 {
3298     wxASSERT( GetWindow() != NULL );
3299     if (!GetWindow())
3300         return wxACC_FAIL;
3301
3302     *childId = (int) GetWindow()->GetChildren().GetCount();
3303     return wxACC_OK;
3304 }
3305
3306 // Gets the specified child (starting from 1).
3307 // If *child is NULL and return value is wxACC_OK,
3308 // this means that the child is a simple element and
3309 // not an accessible object.
3310 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3311 {
3312     wxASSERT( GetWindow() != NULL );
3313     if (!GetWindow())
3314         return wxACC_FAIL;
3315
3316     if (childId == 0)
3317     {
3318         *child = this;
3319         return wxACC_OK;
3320     }
3321
3322     if (childId > (int) GetWindow()->GetChildren().GetCount())
3323         return wxACC_FAIL;
3324
3325     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3326     *child = childWindow->GetOrCreateAccessible();
3327     if (*child)
3328         return wxACC_OK;
3329     else
3330         return wxACC_FAIL;
3331 }
3332
3333 // Gets the parent, or NULL.
3334 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3335 {
3336     wxASSERT( GetWindow() != NULL );
3337     if (!GetWindow())
3338         return wxACC_FAIL;
3339
3340     wxWindow* parentWindow = GetWindow()->GetParent();
3341     if (!parentWindow)
3342     {
3343         *parent = NULL;
3344         return wxACC_OK;
3345     }
3346     else
3347     {
3348         *parent = parentWindow->GetOrCreateAccessible();
3349         if (*parent)
3350             return wxACC_OK;
3351         else
3352             return wxACC_FAIL;
3353     }
3354 }
3355
3356 // Performs the default action. childId is 0 (the action for this object)
3357 // or > 0 (the action for a child).
3358 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3359 // window (e.g. an edit control).
3360 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3361 {
3362     wxASSERT( GetWindow() != NULL );
3363     if (!GetWindow())
3364         return wxACC_FAIL;
3365
3366     return wxACC_NOT_IMPLEMENTED;
3367 }
3368
3369 // Gets the default action for this object (0) or > 0 (the action for a child).
3370 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3371 // string if there is no action.
3372 // The retrieved string describes the action that is performed on an object,
3373 // not what the object does as a result. For example, a toolbar button that prints
3374 // a document has a default action of "Press" rather than "Prints the current document."
3375 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3376 {
3377     wxASSERT( GetWindow() != NULL );
3378     if (!GetWindow())
3379         return wxACC_FAIL;
3380
3381     return wxACC_NOT_IMPLEMENTED;
3382 }
3383
3384 // Returns the description for this object or a child.
3385 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3386 {
3387     wxASSERT( GetWindow() != NULL );
3388     if (!GetWindow())
3389         return wxACC_FAIL;
3390
3391     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3392     if (!ht.empty())
3393     {
3394         *description = ht;
3395         return wxACC_OK;
3396     }
3397     return wxACC_NOT_IMPLEMENTED;
3398 }
3399
3400 // Returns help text for this object or a child, similar to tooltip text.
3401 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3402 {
3403     wxASSERT( GetWindow() != NULL );
3404     if (!GetWindow())
3405         return wxACC_FAIL;
3406
3407     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3408     if (!ht.empty())
3409     {
3410         *helpText = ht;
3411         return wxACC_OK;
3412     }
3413     return wxACC_NOT_IMPLEMENTED;
3414 }
3415
3416 // Returns the keyboard shortcut for this object or child.
3417 // Return e.g. ALT+K
3418 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3419 {
3420     wxASSERT( GetWindow() != NULL );
3421     if (!GetWindow())
3422         return wxACC_FAIL;
3423
3424     return wxACC_NOT_IMPLEMENTED;
3425 }
3426
3427 // Returns a role constant.
3428 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3429 {
3430     wxASSERT( GetWindow() != NULL );
3431     if (!GetWindow())
3432         return wxACC_FAIL;
3433
3434     // If a child, leave wxWidgets to call the function on the actual
3435     // child object.
3436     if (childId > 0)
3437         return wxACC_NOT_IMPLEMENTED;
3438
3439     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3440         return wxACC_NOT_IMPLEMENTED;
3441 #if wxUSE_STATUSBAR
3442     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3443         return wxACC_NOT_IMPLEMENTED;
3444 #endif
3445 #if wxUSE_TOOLBAR
3446     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3447         return wxACC_NOT_IMPLEMENTED;
3448 #endif
3449
3450     //*role = wxROLE_SYSTEM_CLIENT;
3451     *role = wxROLE_SYSTEM_CLIENT;
3452     return wxACC_OK;
3453
3454     #if 0
3455     return wxACC_NOT_IMPLEMENTED;
3456     #endif
3457 }
3458
3459 // Returns a state constant.
3460 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3461 {
3462     wxASSERT( GetWindow() != NULL );
3463     if (!GetWindow())
3464         return wxACC_FAIL;
3465
3466     // If a child, leave wxWidgets to call the function on the actual
3467     // child object.
3468     if (childId > 0)
3469         return wxACC_NOT_IMPLEMENTED;
3470
3471     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3472         return wxACC_NOT_IMPLEMENTED;
3473
3474 #if wxUSE_STATUSBAR
3475     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3476         return wxACC_NOT_IMPLEMENTED;
3477 #endif
3478 #if wxUSE_TOOLBAR
3479     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3480         return wxACC_NOT_IMPLEMENTED;
3481 #endif
3482
3483     *state = 0;
3484     return wxACC_OK;
3485
3486     #if 0
3487     return wxACC_NOT_IMPLEMENTED;
3488     #endif
3489 }
3490
3491 // Returns a localized string representing the value for the object
3492 // or child.
3493 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3494 {
3495     wxASSERT( GetWindow() != NULL );
3496     if (!GetWindow())
3497         return wxACC_FAIL;
3498
3499     return wxACC_NOT_IMPLEMENTED;
3500 }
3501
3502 // Selects the object or child.
3503 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3504 {
3505     wxASSERT( GetWindow() != NULL );
3506     if (!GetWindow())
3507         return wxACC_FAIL;
3508
3509     return wxACC_NOT_IMPLEMENTED;
3510 }
3511
3512 // Gets the window with the keyboard focus.
3513 // If childId is 0 and child is NULL, no object in
3514 // this subhierarchy has the focus.
3515 // If this object has the focus, child should be 'this'.
3516 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3517 {
3518     wxASSERT( GetWindow() != NULL );
3519     if (!GetWindow())
3520         return wxACC_FAIL;
3521
3522     return wxACC_NOT_IMPLEMENTED;
3523 }
3524
3525 #if wxUSE_VARIANT
3526 // Gets a variant representing the selected children
3527 // of this object.
3528 // Acceptable values:
3529 // - a null variant (IsNull() returns true)
3530 // - a list variant (GetType() == wxT("list")
3531 // - an integer representing the selected child element,
3532 //   or 0 if this object is selected (GetType() == wxT("long")
3533 // - a "void*" pointer to a wxAccessible child object
3534 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3535 {
3536     wxASSERT( GetWindow() != NULL );
3537     if (!GetWindow())
3538         return wxACC_FAIL;
3539
3540     return wxACC_NOT_IMPLEMENTED;
3541 }
3542 #endif // wxUSE_VARIANT
3543
3544 #endif // wxUSE_ACCESSIBILITY
3545
3546 // ----------------------------------------------------------------------------
3547 // RTL support
3548 // ----------------------------------------------------------------------------
3549
3550 wxCoord
3551 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3552                                        wxCoord width,
3553                                        wxCoord widthTotal) const
3554 {
3555     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3556     {
3557         x = widthTotal - x - width;
3558     }
3559
3560     return x;
3561 }
3562
3563