src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/statbox.h"
  42     #include "wx/textctrl.h"
  43     #include "wx/settings.h"
  44     #include "wx/dialog.h"
  45     #include "wx/msgdlg.h"
  46     #include "wx/statusbr.h"
  47     #include "wx/dcclient.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_CONSTRAINTS
  51     #include "wx/layout.h"
  52 #endif // wxUSE_CONSTRAINTS
  53
  54 #include "wx/sizer.h"
  55
  56 #if wxUSE_DRAG_AND_DROP
  57     #include "wx/dnd.h"
  58 #endif // wxUSE_DRAG_AND_DROP
  59
  60 #if wxUSE_ACCESSIBILITY
  61     #include "wx/access.h"
  62 #endif
  63
  64 #if wxUSE_HELP
  65     #include "wx/cshelp.h"
  66 #endif // wxUSE_HELP
  67
  68 #if wxUSE_TOOLTIPS
  69     #include "wx/tooltip.h"
  70 #endif // wxUSE_TOOLTIPS
  71
  72 #if wxUSE_CARET
  73     #include "wx/caret.h"
  74 #endif // wxUSE_CARET
  75
  76 // ----------------------------------------------------------------------------
  77 // static data
  78 // ----------------------------------------------------------------------------
  79
  80 #if defined(__WXPM__)
  81 int wxWindowBase::ms_lastControlId = 2000;
  82 #else
  83 int wxWindowBase::ms_lastControlId = -200;
  84 #endif
  85
  86 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  87
  88 // ----------------------------------------------------------------------------
  89 // event table
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  93     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  94     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  95     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  96
  97 #if wxUSE_HELP
  98     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
  99 #endif // wxUSE_HELP
 100
 101 END_EVENT_TABLE()
 102
 103 // ============================================================================
 104 // implementation of the common functionality of the wxWindow class
 105 // ============================================================================
 106
 107 // ----------------------------------------------------------------------------
 108 // initialization
 109 // ----------------------------------------------------------------------------
 110
 111 // the default initialization
 112 wxWindowBase::wxWindowBase()
 113 {
 114     // no window yet, no parent nor children
 115     m_parent = (wxWindow *)NULL;
 116     m_windowId = wxID_ANY;
 117
 118     // no constraints on the minimal window size
 119     m_minWidth =
 120     m_minHeight =
 121     m_maxWidth =
 122     m_maxHeight = -1;
 123
 124     // window are created enabled and visible by default
 125     m_isShown =
 126     m_isEnabled = true;
 127
 128     // the default event handler is just this window
 129     m_eventHandler = this;
 130
 131 #if wxUSE_VALIDATORS
 132     // no validator
 133     m_windowValidator = (wxValidator *) NULL;
 134 #endif // wxUSE_VALIDATORS
 135
 136     // use the system default colours
 137     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 138     m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 139
 140     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 141     // so the font is *not* really set - but calls to SetFont() later won't do
 142     // anything because m_font appears to be already set!
 143 #ifndef __WXMSW__
 144     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 145 #endif // __WXMSW__
 146
 147     // the colours/fonts are default for now
 148     m_hasBgCol =
 149     m_hasFgCol =
 150     m_hasFont = false;
 151
 152     m_isBeingDeleted = false;
 153
 154     // no style bits
 155     m_exStyle =
 156     m_windowStyle = 0;
 157
 158 #if wxUSE_CONSTRAINTS
 159     // no constraints whatsoever
 160     m_constraints = (wxLayoutConstraints *) NULL;
 161     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 162 #endif // wxUSE_CONSTRAINTS
 163
 164     m_windowSizer = (wxSizer *) NULL;
 165     m_containingSizer = (wxSizer *) NULL;
 166     m_autoLayout = false;
 167
 168 #if wxUSE_DRAG_AND_DROP
 169     m_dropTarget = (wxDropTarget *)NULL;
 170 #endif // wxUSE_DRAG_AND_DROP
 171
 172 #if wxUSE_TOOLTIPS
 173     m_tooltip = (wxToolTip *)NULL;
 174 #endif // wxUSE_TOOLTIPS
 175
 176 #if wxUSE_CARET
 177     m_caret = (wxCaret *)NULL;
 178 #endif // wxUSE_CARET
 179
 180 #if wxUSE_PALETTE
 181     m_hasCustomPalette = false;
 182 #endif // wxUSE_PALETTE
 183
 184 #if wxUSE_ACCESSIBILITY
 185     m_accessible = NULL;
 186 #endif
 187
 188     m_virtualSize = wxDefaultSize;
 189
 190     m_minVirtualWidth =
 191     m_minVirtualHeight =
 192     m_maxVirtualWidth =
 193     m_maxVirtualHeight = -1;
 194
 195     m_windowVariant = wxWINDOW_VARIANT_NORMAL ;
 196
 197     // Whether we're using the current theme for this window (wxGTK only for now)
 198     m_themeEnabled = false;
 199 }
 200
 201 // common part of window creation process
 202 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 203                               wxWindowID id,
 204                               const wxPoint& WXUNUSED(pos),
 205                               const wxSize& WXUNUSED(size),
 206                               long style,
 207                               const wxValidator& wxVALIDATOR_PARAM(validator),
 208                               const wxString& name)
 209 {
 210 #if wxUSE_STATBOX
 211     // wxGTK doesn't allow to create controls with static box as the parent so
 212     // this will result in a crash when the program is ported to wxGTK so warn
 213     // the user about it
 214
 215     // if you get this assert, the correct solution is to create the controls
 216     // as siblings of the static box
 217     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 218                   _T("wxStaticBox can't be used as a window parent!") );
 219 #endif // wxUSE_STATBOX
 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 wxWindows own usage)
 224     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 225                   _T("invalid id value") );
 226
 227     // generate a new id if the user doesn't care about it
 228     m_windowId = id == wxID_ANY ? NewControlId() : id;
 229
 230     SetName(name);
 231     SetWindowStyleFlag(style);
 232     SetParent(parent);
 233
 234 #if wxUSE_VALIDATORS
 235     SetValidator(validator);
 236 #endif // wxUSE_VALIDATORS
 237
 238     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 239     // have it too - like this it's possible to set it only in the top level
 240     // dialog/frame and all children will inherit it by defult
 241     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 242     {
 243         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 244     }
 245
 246     return true;
 247 }
 248
 249 // ----------------------------------------------------------------------------
 250 // destruction
 251 // ----------------------------------------------------------------------------
 252
 253 // common clean up
 254 wxWindowBase::~wxWindowBase()
 255 {
 256     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 257
 258     // FIXME if these 2 cases result from programming errors in the user code
 259     //       we should probably assert here instead of silently fixing them
 260
 261     // Just in case the window has been Closed, but we're then deleting
 262     // immediately: don't leave dangling pointers.
 263     wxPendingDelete.DeleteObject(this);
 264
 265     // Just in case we've loaded a top-level window via LoadNativeDialog but
 266     // we weren't a dialog class
 267     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 268
 269     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 270
 271     // reset the dangling pointer our parent window may keep to us
 272     if ( m_parent )
 273     {
 274         if ( m_parent->GetDefaultItem() == this )
 275         {
 276             m_parent->SetDefaultItem(NULL);
 277         }
 278
 279         m_parent->RemoveChild(this);
 280     }
 281
 282 #if wxUSE_CARET
 283     delete m_caret;
 284 #endif // wxUSE_CARET
 285
 286 #if wxUSE_VALIDATORS
 287     delete m_windowValidator;
 288 #endif // wxUSE_VALIDATORS
 289
 290 #if wxUSE_CONSTRAINTS
 291     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 292     // at deleted windows as they delete themselves.
 293     DeleteRelatedConstraints();
 294
 295     if ( m_constraints )
 296     {
 297         // This removes any dangling pointers to this window in other windows'
 298         // constraintsInvolvedIn lists.
 299         UnsetConstraints(m_constraints);
 300         delete m_constraints;
 301         m_constraints = NULL;
 302     }
 303 #endif // wxUSE_CONSTRAINTS
 304
 305     if ( m_containingSizer )
 306         m_containingSizer->Detach( (wxWindow*)this );
 307
 308     delete m_windowSizer;
 309
 310 #if wxUSE_DRAG_AND_DROP
 311     delete m_dropTarget;
 312 #endif // wxUSE_DRAG_AND_DROP
 313
 314 #if wxUSE_TOOLTIPS
 315     delete m_tooltip;
 316 #endif // wxUSE_TOOLTIPS
 317
 318 #if wxUSE_ACCESSIBILITY
 319     delete m_accessible;
 320 #endif
 321 }
 322
 323 bool wxWindowBase::Destroy()
 324 {
 325     delete this;
 326
 327     return true;
 328 }
 329
 330 bool wxWindowBase::Close(bool force)
 331 {
 332     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 333     event.SetEventObject(this);
 334     event.SetCanVeto(!force);
 335
 336     // return false if window wasn't closed because the application vetoed the
 337     // close event
 338     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 339 }
 340
 341 bool wxWindowBase::DestroyChildren()
 342 {
 343     wxWindowList::compatibility_iterator node;
 344     for ( ;; )
 345     {
 346         // we iterate until the list becomes empty
 347         node = GetChildren().GetFirst();
 348         if ( !node )
 349             break;
 350
 351         wxWindow *child = node->GetData();
 352
 353         // note that we really want to call delete and not ->Destroy() here
 354         // because we want to delete the child immediately, before we are
 355         // deleted, and delayed deletion would result in problems as our (top
 356         // level) child could outlive its parent
 357         delete child;
 358
 359         wxASSERT_MSG( !GetChildren().Find(child),
 360                       wxT("child didn't remove itself using RemoveChild()") );
 361     }
 362
 363     return true;
 364 }
 365
 366 // ----------------------------------------------------------------------------
 367 // size/position related methods
 368 // ----------------------------------------------------------------------------
 369
 370 // centre the window with respect to its parent in either (or both) directions
 371 void wxWindowBase::Centre(int direction)
 372 {
 373     // the position/size of the parent window or of the entire screen
 374     wxPoint posParent;
 375     int widthParent, heightParent;
 376
 377     wxWindow *parent = NULL;
 378
 379     if ( !(direction & wxCENTRE_ON_SCREEN) )
 380     {
 381         // find the parent to centre this window on: it should be the
 382         // immediate parent for the controls but the top level parent for the
 383         // top level windows (like dialogs)
 384         parent = GetParent();
 385         if ( IsTopLevel() )
 386         {
 387             while ( parent && !parent->IsTopLevel() )
 388             {
 389                 parent = parent->GetParent();
 390             }
 391         }
 392
 393         // there is no wxTopLevelWindow under wxMotif yet
 394 #ifndef __WXMOTIF__
 395         // we shouldn't center the dialog on the iconized window: under
 396         // Windows, for example, this places it completely off the screen
 397         if ( parent )
 398         {
 399             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 400             if ( winTop && winTop->IsIconized() )
 401             {
 402                 parent = NULL;
 403             }
 404         }
 405 #endif // __WXMOTIF__
 406
 407         // did we find the parent?
 408         if ( !parent )
 409         {
 410             // no other choice
 411             direction |= wxCENTRE_ON_SCREEN;
 412         }
 413     }
 414
 415     if ( direction & wxCENTRE_ON_SCREEN )
 416     {
 417         // centre with respect to the whole screen
 418         wxDisplaySize(&widthParent, &heightParent);
 419     }
 420     else
 421     {
 422         if ( IsTopLevel() )
 423         {
 424             // centre on the parent
 425             parent->GetSize(&widthParent, &heightParent);
 426
 427             // adjust to the parents position
 428             posParent = parent->GetPosition();
 429         }
 430         else
 431         {
 432             // centre inside the parents client rectangle
 433             parent->GetClientSize(&widthParent, &heightParent);
 434         }
 435     }
 436
 437     int width, height;
 438     GetSize(&width, &height);
 439
 440     int xNew = -1,
 441         yNew = -1;
 442
 443     if ( direction & wxHORIZONTAL )
 444         xNew = (widthParent - width)/2;
 445
 446     if ( direction & wxVERTICAL )
 447         yNew = (heightParent - height)/2;
 448
 449     xNew += posParent.x;
 450     yNew += posParent.y;
 451
 452     // Base size of the visible dimensions of the display
 453     // to take into account the taskbar
 454     wxRect rect = wxGetClientDisplayRect();
 455     wxSize size (rect.width,rect.height);
 456
 457     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 458     //     but it may mean that the window is placed on other than the main
 459     //     display. Therefore we only make sure centered window is on the main display
 460     //     if the parent is at least partially present here.
 461     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 462     {
 463         if (xNew < 0)
 464             xNew = 0;
 465         else if (xNew+width > size.x)
 466             xNew = size.x-width-1;
 467     }
 468     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 469     {
 470         if (yNew+height > size.y)
 471             yNew = size.y-height-1;
 472
 473         // Make certain that the title bar is initially visible
 474         // always, even if this would push the bottom of the
 475         // dialog of the visible area of the display
 476         if (yNew < 0)
 477             yNew = 0;
 478     }
 479
 480     // move the window to this position (keeping the old size but using
 481     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 482     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 483 }
 484
 485 // fits the window around the children
 486 void wxWindowBase::Fit()
 487 {
 488     if ( GetChildren().GetCount() > 0 )
 489     {
 490         SetClientSize(DoGetBestSize());
 491     }
 492     //else: do nothing if we have no children
 493 }
 494
 495 // fits virtual size (ie. scrolled area etc.) around children
 496 void wxWindowBase::FitInside()
 497 {
 498     if ( GetChildren().GetCount() > 0 )
 499     {
 500         SetVirtualSize( GetBestVirtualSize() );
 501     }
 502 }
 503
 504 // return the size best suited for the current window
 505 wxSize wxWindowBase::DoGetBestSize() const
 506 {
 507     if ( m_windowSizer )
 508     {
 509         return m_windowSizer->GetMinSize();
 510     }
 511 #if wxUSE_CONSTRAINTS
 512     else if ( m_constraints )
 513     {
 514         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 515
 516         // our minimal acceptable size is such that all our windows fit inside
 517         int maxX = 0,
 518             maxY = 0;
 519
 520         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 521               node;
 522               node = node->GetNext() )
 523         {
 524             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 525             if ( !c )
 526             {
 527                 // it's not normal that we have an unconstrained child, but
 528                 // what can we do about it?
 529                 continue;
 530             }
 531
 532             int x = c->right.GetValue(),
 533                 y = c->bottom.GetValue();
 534
 535             if ( x > maxX )
 536                 maxX = x;
 537
 538             if ( y > maxY )
 539                 maxY = y;
 540
 541             // TODO: we must calculate the overlaps somehow, otherwise we
 542             //       will never return a size bigger than the current one :-(
 543         }
 544
 545         return wxSize(maxX, maxY);
 546     }
 547 #endif // wxUSE_CONSTRAINTS
 548     else if ( GetChildren().GetCount() > 0 )
 549     {
 550         // our minimal acceptable size is such that all our windows fit inside
 551         int maxX = 0,
 552             maxY = 0;
 553
 554         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 555               node;
 556               node = node->GetNext() )
 557         {
 558             wxWindow *win = node->GetData();
 559             if ( win->IsTopLevel()
 560 #if wxUSE_STATUSBAR
 561                     || wxDynamicCast(win, wxStatusBar)
 562 #endif // wxUSE_STATUSBAR
 563                )
 564             {
 565                 // dialogs and frames lie in different top level windows -
 566                 // don't deal with them here; as for the status bars, they
 567                 // don't lie in the client area at all
 568                 continue;
 569             }
 570
 571             int wx, wy, ww, wh;
 572             win->GetPosition(&wx, &wy);
 573
 574             // if the window hadn't been positioned yet, assume that it is in
 575             // the origin
 576             if ( wx == -1 )
 577                 wx = 0;
 578             if ( wy == -1 )
 579                 wy = 0;
 580
 581             win->GetSize(&ww, &wh);
 582             if ( wx + ww > maxX )
 583                 maxX = wx + ww;
 584             if ( wy + wh > maxY )
 585                 maxY = wy + wh;
 586         }
 587
 588         // for compatibility with the old versions and because it really looks
 589         // slightly more pretty like this, add a pad
 590         maxX += 7;
 591         maxY += 14;
 592
 593         return wxSize(maxX, maxY);
 594     }
 595     else
 596     {
 597         // for a generic window there is no natural best size - just use the
 598         // current one
 599         return GetSize();
 600     }
 601 }
 602
 603 // by default the origin is not shifted
 604 wxPoint wxWindowBase::GetClientAreaOrigin() const
 605 {
 606     return wxPoint(0, 0);
 607 }
 608
 609 // set the min/max size of the window
 610 void wxWindowBase::SetSizeHints(int minW, int minH,
 611                                 int maxW, int maxH,
 612                                 int WXUNUSED(incW), int WXUNUSED(incH))
 613 {
 614     // setting min width greater than max width leads to infinite loops under
 615     // X11 and generally doesn't make any sense, so don't allow it
 616     wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
 617                     (minH == -1 || maxH == -1 || minH <= maxH),
 618                  _T("min width/height must be less than max width/height!") );
 619
 620     m_minWidth = minW;
 621     m_maxWidth = maxW;
 622     m_minHeight = minH;
 623     m_maxHeight = maxH;
 624 }
 625
 626 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 627 {
 628     if ( m_windowVariant == variant )
 629         return ;
 630
 631     m_windowVariant = variant ;
 632
 633     DoSetWindowVariant( variant ) ;
 634     return ;
 635 }
 636
 637 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 638 {
 639     wxFont font = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT ) ;
 640     int size = font.GetPointSize() ;
 641     switch ( variant )
 642     {
 643         case wxWINDOW_VARIANT_NORMAL :
 644             break ;
 645         case wxWINDOW_VARIANT_SMALL :
 646             font.SetPointSize( size * 3 / 4 ) ;
 647             break ;
 648         case wxWINDOW_VARIANT_MINI :
 649             font.SetPointSize( size * 2 / 3 ) ;
 650             break ;
 651         case wxWINDOW_VARIANT_LARGE :
 652             font.SetPointSize( size * 5 / 4 ) ;
 653             break ;
 654         default:
 655             wxFAIL_MSG(_T("unexpected window variant"));
 656             break ;
 657     }
 658     SetFont( font ) ;
 659 }
 660
 661 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 662                                         int maxW, int maxH )
 663 {
 664     m_minVirtualWidth = minW;
 665     m_maxVirtualWidth = maxW;
 666     m_minVirtualHeight = minH;
 667     m_maxVirtualHeight = maxH;
 668 }
 669
 670 void wxWindowBase::DoSetVirtualSize( int x, int y )
 671 {
 672     if ( m_minVirtualWidth != -1 && m_minVirtualWidth > x )
 673         x = m_minVirtualWidth;
 674     if ( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )
 675         x = m_maxVirtualWidth;
 676     if ( m_minVirtualHeight != -1 && m_minVirtualHeight > y )
 677         y = m_minVirtualHeight;
 678     if ( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y )
 679         y = m_maxVirtualHeight;
 680
 681     m_virtualSize = wxSize(x, y);
 682 }
 683
 684 wxSize wxWindowBase::DoGetVirtualSize() const
 685 {
 686     wxSize  s( GetClientSize() );
 687
 688     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 689                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 690 }
 691
 692 // ----------------------------------------------------------------------------
 693 // show/hide/enable/disable the window
 694 // ----------------------------------------------------------------------------
 695
 696 bool wxWindowBase::Show(bool show)
 697 {
 698     if ( show != m_isShown )
 699     {
 700         m_isShown = show;
 701
 702         return true;
 703     }
 704     else
 705     {
 706         return false;
 707     }
 708 }
 709
 710 bool wxWindowBase::Enable(bool enable)
 711 {
 712     if ( enable != m_isEnabled )
 713     {
 714         m_isEnabled = enable;
 715
 716         return true;
 717     }
 718     else
 719     {
 720         return false;
 721     }
 722 }
 723 // ----------------------------------------------------------------------------
 724 // RTTI
 725 // ----------------------------------------------------------------------------
 726
 727 bool wxWindowBase::IsTopLevel() const
 728 {
 729     return false;
 730 }
 731
 732 // ----------------------------------------------------------------------------
 733 // reparenting the window
 734 // ----------------------------------------------------------------------------
 735
 736 void wxWindowBase::AddChild(wxWindowBase *child)
 737 {
 738     wxCHECK_RET( child, wxT("can't add a NULL child") );
 739
 740     // this should never happen and it will lead to a crash later if it does
 741     // because RemoveChild() will remove only one node from the children list
 742     // and the other(s) one(s) will be left with dangling pointers in them
 743     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 744
 745     GetChildren().Append((wxWindow*)child);
 746     child->SetParent(this);
 747 }
 748
 749 void wxWindowBase::RemoveChild(wxWindowBase *child)
 750 {
 751     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 752
 753     GetChildren().DeleteObject((wxWindow *)child);
 754     child->SetParent(NULL);
 755 }
 756
 757 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 758 {
 759     wxWindow *oldParent = GetParent();
 760     if ( newParent == oldParent )
 761     {
 762         // nothing done
 763         return false;
 764     }
 765
 766     // unlink this window from the existing parent.
 767     if ( oldParent )
 768     {
 769         oldParent->RemoveChild(this);
 770     }
 771     else
 772     {
 773         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 774     }
 775
 776     // add it to the new one
 777     if ( newParent )
 778     {
 779         newParent->AddChild(this);
 780     }
 781     else
 782     {
 783         wxTopLevelWindows.Append((wxWindow *)this);
 784     }
 785
 786     return true;
 787 }
 788
 789 // ----------------------------------------------------------------------------
 790 // event handler stuff
 791 // ----------------------------------------------------------------------------
 792
 793 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 794 {
 795     wxEvtHandler *handlerOld = GetEventHandler();
 796
 797     handler->SetNextHandler(handlerOld);
 798
 799     if ( handlerOld )
 800         GetEventHandler()->SetPreviousHandler(handler);
 801
 802     SetEventHandler(handler);
 803 }
 804
 805 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 806 {
 807     wxEvtHandler *handlerA = GetEventHandler();
 808     if ( handlerA )
 809     {
 810         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 811         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 812
 813         if ( handlerB )
 814             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 815         SetEventHandler(handlerB);
 816
 817         if ( deleteHandler )
 818         {
 819             delete handlerA;
 820             handlerA = (wxEvtHandler *)NULL;
 821         }
 822     }
 823
 824     return handlerA;
 825 }
 826
 827 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 828 {
 829     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 830
 831     wxEvtHandler *handlerPrev = NULL,
 832                  *handlerCur = GetEventHandler();
 833     while ( handlerCur )
 834     {
 835         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 836
 837         if ( handlerCur == handler )
 838         {
 839             if ( handlerPrev )
 840             {
 841                 handlerPrev->SetNextHandler(handlerNext);
 842             }
 843             else
 844             {
 845                 SetEventHandler(handlerNext);
 846             }
 847
 848             if ( handlerNext )
 849             {
 850                 handlerNext->SetPreviousHandler ( handlerPrev );
 851             }
 852
 853             handler->SetNextHandler(NULL);
 854             handler->SetPreviousHandler(NULL);
 855
 856             return true;
 857         }
 858
 859         handlerPrev = handlerCur;
 860         handlerCur = handlerNext;
 861     }
 862
 863     wxFAIL_MSG( _T("where has the event handler gone?") );
 864
 865     return false;
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869 // cursors, fonts &c
 870 // ----------------------------------------------------------------------------
 871
 872 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 873 {
 874     if ( !colour.Ok() || (colour == m_backgroundColour) )
 875         return false;
 876
 877     m_backgroundColour = colour;
 878
 879     m_hasBgCol = true;
 880
 881     return true;
 882 }
 883
 884 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 885 {
 886     if ( !colour.Ok() || (colour == m_foregroundColour) )
 887         return false;
 888
 889     m_foregroundColour = colour;
 890
 891     m_hasFgCol = true;
 892
 893     return true;
 894 }
 895
 896 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 897 {
 898     // setting an invalid cursor is ok, it means that we don't have any special
 899     // cursor
 900     if ( m_cursor == cursor )
 901     {
 902         // no change
 903         return false;
 904     }
 905
 906     m_cursor = cursor;
 907
 908     return true;
 909 }
 910
 911 bool wxWindowBase::SetFont(const wxFont& font)
 912 {
 913     // don't try to set invalid font, always fall back to the default
 914     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 915
 916     if ( fontOk == m_font )
 917     {
 918         // no change
 919         return false;
 920     }
 921
 922     m_font = fontOk;
 923
 924     m_hasFont = true;
 925
 926     return true;
 927 }
 928
 929 #if wxUSE_PALETTE
 930
 931 void wxWindowBase::SetPalette(const wxPalette& pal)
 932 {
 933     m_hasCustomPalette = true;
 934     m_palette = pal;
 935
 936     // VZ: can anyone explain me what do we do here?
 937     wxWindowDC d((wxWindow *) this);
 938     d.SetPalette(pal);
 939 }
 940
 941 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
 942 {
 943     wxWindow *win = (wxWindow *)this;
 944     while ( win && !win->HasCustomPalette() )
 945     {
 946         win = win->GetParent();
 947     }
 948
 949     return win;
 950 }
 951
 952 #endif // wxUSE_PALETTE
 953
 954 #if wxUSE_CARET
 955 void wxWindowBase::SetCaret(wxCaret *caret)
 956 {
 957     if ( m_caret )
 958     {
 959         delete m_caret;
 960     }
 961
 962     m_caret = caret;
 963
 964     if ( m_caret )
 965     {
 966         wxASSERT_MSG( m_caret->GetWindow() == this,
 967                       wxT("caret should be created associated to this window") );
 968     }
 969 }
 970 #endif // wxUSE_CARET
 971
 972 #if wxUSE_VALIDATORS
 973 // ----------------------------------------------------------------------------
 974 // validators
 975 // ----------------------------------------------------------------------------
 976
 977 void wxWindowBase::SetValidator(const wxValidator& validator)
 978 {
 979     if ( m_windowValidator )
 980         delete m_windowValidator;
 981
 982     m_windowValidator = (wxValidator *)validator.Clone();
 983
 984     if ( m_windowValidator )
 985         m_windowValidator->SetWindow(this) ;
 986 }
 987 #endif // wxUSE_VALIDATORS
 988
 989 // ----------------------------------------------------------------------------
 990 // update region stuff
 991 // ----------------------------------------------------------------------------
 992
 993 wxRect wxWindowBase::GetUpdateClientRect() const
 994 {
 995     wxRegion rgnUpdate = GetUpdateRegion();
 996     rgnUpdate.Intersect(GetClientRect());
 997     wxRect rectUpdate = rgnUpdate.GetBox();
 998     wxPoint ptOrigin = GetClientAreaOrigin();
 999     rectUpdate.x -= ptOrigin.x;
1000     rectUpdate.y -= ptOrigin.y;
1001
1002     return rectUpdate;
1003 }
1004
1005 bool wxWindowBase::IsExposed(int x, int y) const
1006 {
1007     return m_updateRegion.Contains(x, y) != wxOutRegion;
1008 }
1009
1010 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1011 {
1012     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1013 }
1014
1015 void wxWindowBase::ClearBackground()
1016 {
1017     // wxGTK uses its own version, no need to add never used code
1018 #ifndef __WXGTK__
1019     wxClientDC dc((wxWindow *)this);
1020     wxBrush brush(GetBackgroundColour(), wxSOLID);
1021     dc.SetBackground(brush);
1022     dc.Clear();
1023 #endif // __WXGTK__
1024 }
1025
1026 // ----------------------------------------------------------------------------
1027 // find child window by id or name
1028 // ----------------------------------------------------------------------------
1029
1030 wxWindow *wxWindowBase::FindWindow( long id )
1031 {
1032     if ( id == m_windowId )
1033         return (wxWindow *)this;
1034
1035     wxWindowBase *res = (wxWindow *)NULL;
1036     wxWindowList::compatibility_iterator node;
1037     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1038     {
1039         wxWindowBase *child = node->GetData();
1040         res = child->FindWindow( id );
1041     }
1042
1043     return (wxWindow *)res;
1044 }
1045
1046 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1047 {
1048     if ( name == m_windowName )
1049         return (wxWindow *)this;
1050
1051     wxWindowBase *res = (wxWindow *)NULL;
1052     wxWindowList::compatibility_iterator node;
1053     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1054     {
1055         wxWindow *child = node->GetData();
1056         res = child->FindWindow(name);
1057     }
1058
1059     return (wxWindow *)res;
1060 }
1061
1062
1063 // find any window by id or name or label: If parent is non-NULL, look through
1064 // children for a label or title matching the specified string. If NULL, look
1065 // through all top-level windows.
1066 //
1067 // to avoid duplicating code we reuse the same helper function but with
1068 // different comparators
1069
1070 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1071                                 const wxString& label, long id);
1072
1073 static
1074 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1075                            long WXUNUSED(id))
1076 {
1077     return win->GetLabel() == label;
1078 }
1079
1080 static
1081 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1082                           long WXUNUSED(id))
1083 {
1084     return win->GetName() == label;
1085 }
1086
1087 static
1088 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1089                         long id)
1090 {
1091     return win->GetId() == id;
1092 }
1093
1094 // recursive helper for the FindWindowByXXX() functions
1095 static
1096 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1097                                   const wxString& label,
1098                                   long id,
1099                                   wxFindWindowCmp cmp)
1100 {
1101     if ( parent )
1102     {
1103         // see if this is the one we're looking for
1104         if ( (*cmp)(parent, label, id) )
1105             return (wxWindow *)parent;
1106
1107         // It wasn't, so check all its children
1108         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1109               node;
1110               node = node->GetNext() )
1111         {
1112             // recursively check each child
1113             wxWindow *win = (wxWindow *)node->GetData();
1114             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1115             if (retwin)
1116                 return retwin;
1117         }
1118     }
1119
1120     // Not found
1121     return NULL;
1122 }
1123
1124 // helper for FindWindowByXXX()
1125 static
1126 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1127                              const wxString& label,
1128                              long id,
1129                              wxFindWindowCmp cmp)
1130 {
1131     if ( parent )
1132     {
1133         // just check parent and all its children
1134         return wxFindWindowRecursively(parent, label, id, cmp);
1135     }
1136
1137     // start at very top of wx's windows
1138     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1139           node;
1140           node = node->GetNext() )
1141     {
1142         // recursively check each window & its children
1143         wxWindow *win = node->GetData();
1144         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1145         if (retwin)
1146             return retwin;
1147     }
1148
1149     return NULL;
1150 }
1151
1152 /* static */
1153 wxWindow *
1154 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1155 {
1156     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1157 }
1158
1159 /* static */
1160 wxWindow *
1161 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1162 {
1163     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1164
1165     if ( !win )
1166     {
1167         // fall back to the label
1168         win = FindWindowByLabel(title, parent);
1169     }
1170
1171     return win;
1172 }
1173
1174 /* static */
1175 wxWindow *
1176 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1177 {
1178     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1179 }
1180
1181 // ----------------------------------------------------------------------------
1182 // dialog oriented functions
1183 // ----------------------------------------------------------------------------
1184
1185 void wxWindowBase::MakeModal(bool modal)
1186 {
1187     // Disable all other windows
1188     if ( IsTopLevel() )
1189     {
1190         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1191         while (node)
1192         {
1193             wxWindow *win = node->GetData();
1194             if (win != this)
1195                 win->Enable(!modal);
1196
1197             node = node->GetNext();
1198         }
1199     }
1200 }
1201
1202 bool wxWindowBase::Validate()
1203 {
1204 #if wxUSE_VALIDATORS
1205     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1206
1207     wxWindowList::compatibility_iterator node;
1208     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1209     {
1210         wxWindowBase *child = node->GetData();
1211         wxValidator *validator = child->GetValidator();
1212         if ( validator && !validator->Validate((wxWindow *)this) )
1213         {
1214             return false;
1215         }
1216
1217         if ( recurse && !child->Validate() )
1218         {
1219             return false;
1220         }
1221     }
1222 #endif // wxUSE_VALIDATORS
1223
1224     return true;
1225 }
1226
1227 bool wxWindowBase::TransferDataToWindow()
1228 {
1229 #if wxUSE_VALIDATORS
1230     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1231
1232     wxWindowList::compatibility_iterator node;
1233     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1234     {
1235         wxWindowBase *child = node->GetData();
1236         wxValidator *validator = child->GetValidator();
1237         if ( validator && !validator->TransferToWindow() )
1238         {
1239             wxLogWarning(_("Could not transfer data to window"));
1240 #if wxUSE_LOG
1241             wxLog::FlushActive();
1242 #endif // wxUSE_LOG
1243
1244             return false;
1245         }
1246
1247         if ( recurse )
1248         {
1249             if ( !child->TransferDataToWindow() )
1250             {
1251                 // warning already given
1252                 return false;
1253             }
1254         }
1255     }
1256 #endif // wxUSE_VALIDATORS
1257
1258     return true;
1259 }
1260
1261 bool wxWindowBase::TransferDataFromWindow()
1262 {
1263 #if wxUSE_VALIDATORS
1264     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1265
1266     wxWindowList::compatibility_iterator node;
1267     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1268     {
1269         wxWindow *child = node->GetData();
1270         wxValidator *validator = child->GetValidator();
1271         if ( validator && !validator->TransferFromWindow() )
1272         {
1273             // nop warning here because the application is supposed to give
1274             // one itself - we don't know here what might have gone wrongly
1275
1276             return false;
1277         }
1278
1279         if ( recurse )
1280         {
1281             if ( !child->TransferDataFromWindow() )
1282             {
1283                 // warning already given
1284                 return false;
1285             }
1286         }
1287     }
1288 #endif // wxUSE_VALIDATORS
1289
1290     return true;
1291 }
1292
1293 void wxWindowBase::InitDialog()
1294 {
1295     wxInitDialogEvent event(GetId());
1296     event.SetEventObject( this );
1297     GetEventHandler()->ProcessEvent(event);
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301 // context-sensitive help support
1302 // ----------------------------------------------------------------------------
1303
1304 #if wxUSE_HELP
1305
1306 // associate this help text with this window
1307 void wxWindowBase::SetHelpText(const wxString& text)
1308 {
1309     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1310     if ( helpProvider )
1311     {
1312         helpProvider->AddHelp(this, text);
1313     }
1314 }
1315
1316 // associate this help text with all windows with the same id as this
1317 // one
1318 void wxWindowBase::SetHelpTextForId(const wxString& text)
1319 {
1320     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1321     if ( helpProvider )
1322     {
1323         helpProvider->AddHelp(GetId(), text);
1324     }
1325 }
1326
1327 // get the help string associated with this window (may be empty)
1328 wxString wxWindowBase::GetHelpText() const
1329 {
1330     wxString text;
1331     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1332     if ( helpProvider )
1333     {
1334         text = helpProvider->GetHelp(this);
1335     }
1336
1337     return text;
1338 }
1339
1340 // show help for this window
1341 void wxWindowBase::OnHelp(wxHelpEvent& event)
1342 {
1343     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1344     if ( helpProvider )
1345     {
1346         if ( helpProvider->ShowHelp(this) )
1347         {
1348             // skip the event.Skip() below
1349             return;
1350         }
1351     }
1352
1353     event.Skip();
1354 }
1355
1356 #endif // wxUSE_HELP
1357
1358 // ----------------------------------------------------------------------------
1359 // tooltipsroot.Replace("\\", "/");
1360 // ----------------------------------------------------------------------------
1361
1362 #if wxUSE_TOOLTIPS
1363
1364 void wxWindowBase::SetToolTip( const wxString &tip )
1365 {
1366     // don't create the new tooltip if we already have one
1367     if ( m_tooltip )
1368     {
1369         m_tooltip->SetTip( tip );
1370     }
1371     else
1372     {
1373         SetToolTip( new wxToolTip( tip ) );
1374     }
1375
1376     // setting empty tooltip text does not remove the tooltip any more - use
1377     // SetToolTip((wxToolTip *)NULL) for this
1378 }
1379
1380 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1381 {
1382     if ( m_tooltip )
1383         delete m_tooltip;
1384
1385     m_tooltip = tooltip;
1386 }
1387
1388 #endif // wxUSE_TOOLTIPS
1389
1390 // ----------------------------------------------------------------------------
1391 // constraints and sizers
1392 // ----------------------------------------------------------------------------
1393
1394 #if wxUSE_CONSTRAINTS
1395
1396 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1397 {
1398     if ( m_constraints )
1399     {
1400         UnsetConstraints(m_constraints);
1401         delete m_constraints;
1402     }
1403     m_constraints = constraints;
1404     if ( m_constraints )
1405     {
1406         // Make sure other windows know they're part of a 'meaningful relationship'
1407         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1408             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1409         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1410             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1411         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1412             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1413         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1414             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1415         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1416             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1417         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1418             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1419         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1420             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1421         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1422             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1423     }
1424 }
1425
1426 // This removes any dangling pointers to this window in other windows'
1427 // constraintsInvolvedIn lists.
1428 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1429 {
1430     if ( c )
1431     {
1432         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1433             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1434         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1435             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1436         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1437             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1438         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1439             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1440         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1441             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1442         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1443             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1444         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1445             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1446         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1447             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1448     }
1449 }
1450
1451 // Back-pointer to other windows we're involved with, so if we delete this
1452 // window, we must delete any constraints we're involved with.
1453 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1454 {
1455     if ( !m_constraintsInvolvedIn )
1456         m_constraintsInvolvedIn = new wxWindowList;
1457     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1458         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1459 }
1460
1461 // REMOVE back-pointer to other windows we're involved with.
1462 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1463 {
1464     if ( m_constraintsInvolvedIn )
1465         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1466 }
1467
1468 // Reset any constraints that mention this window
1469 void wxWindowBase::DeleteRelatedConstraints()
1470 {
1471     if ( m_constraintsInvolvedIn )
1472     {
1473         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1474         while (node)
1475         {
1476             wxWindow *win = node->GetData();
1477             wxLayoutConstraints *constr = win->GetConstraints();
1478
1479             // Reset any constraints involving this window
1480             if ( constr )
1481             {
1482                 constr->left.ResetIfWin(this);
1483                 constr->top.ResetIfWin(this);
1484                 constr->right.ResetIfWin(this);
1485                 constr->bottom.ResetIfWin(this);
1486                 constr->width.ResetIfWin(this);
1487                 constr->height.ResetIfWin(this);
1488                 constr->centreX.ResetIfWin(this);
1489                 constr->centreY.ResetIfWin(this);
1490             }
1491
1492             wxWindowList::compatibility_iterator next = node->GetNext();
1493             m_constraintsInvolvedIn->Erase(node);
1494             node = next;
1495         }
1496
1497         delete m_constraintsInvolvedIn;
1498         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1499     }
1500 }
1501
1502 #endif // wxUSE_CONSTRAINTS
1503
1504 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1505 {
1506     if ( sizer == m_windowSizer)
1507         return;
1508
1509     if ( deleteOld )
1510         delete m_windowSizer;
1511
1512     m_windowSizer = sizer;
1513
1514     SetAutoLayout( sizer != NULL );
1515 }
1516
1517 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1518 {
1519     SetSizer( sizer, deleteOld );
1520     sizer->SetSizeHints( (wxWindow*) this );
1521 }
1522
1523 #if wxUSE_CONSTRAINTS
1524
1525 void wxWindowBase::SatisfyConstraints()
1526 {
1527     wxLayoutConstraints *constr = GetConstraints();
1528     bool wasOk = constr && constr->AreSatisfied();
1529
1530     ResetConstraints();   // Mark all constraints as unevaluated
1531
1532     int noChanges = 1;
1533
1534     // if we're a top level panel (i.e. our parent is frame/dialog), our
1535     // own constraints will never be satisfied any more unless we do it
1536     // here
1537     if ( wasOk )
1538     {
1539         while ( noChanges > 0 )
1540         {
1541             LayoutPhase1(&noChanges);
1542         }
1543     }
1544
1545     LayoutPhase2(&noChanges);
1546 }
1547
1548 #endif // wxUSE_CONSTRAINTS
1549
1550 bool wxWindowBase::Layout()
1551 {
1552     // If there is a sizer, use it instead of the constraints
1553     if ( GetSizer() )
1554     {
1555         int w, h;
1556         GetVirtualSize(&w, &h);
1557         GetSizer()->SetDimension( 0, 0, w, h );
1558     }
1559 #if wxUSE_CONSTRAINTS
1560     else
1561     {
1562         SatisfyConstraints(); // Find the right constraints values
1563         SetConstraintSizes(); // Recursively set the real window sizes
1564     }
1565 #endif
1566
1567     return true;
1568 }
1569
1570 #if wxUSE_CONSTRAINTS
1571
1572 // first phase of the constraints evaluation: set our own constraints
1573 bool wxWindowBase::LayoutPhase1(int *noChanges)
1574 {
1575     wxLayoutConstraints *constr = GetConstraints();
1576
1577     return !constr || constr->SatisfyConstraints(this, noChanges);
1578 }
1579
1580 // second phase: set the constraints for our children
1581 bool wxWindowBase::LayoutPhase2(int *noChanges)
1582 {
1583     *noChanges = 0;
1584
1585     // Layout children
1586     DoPhase(1);
1587
1588     // Layout grand children
1589     DoPhase(2);
1590
1591     return true;
1592 }
1593
1594 // Do a phase of evaluating child constraints
1595 bool wxWindowBase::DoPhase(int phase)
1596 {
1597     // the list containing the children for which the constraints are already
1598     // set correctly
1599     wxWindowList succeeded;
1600
1601     // the max number of iterations we loop before concluding that we can't set
1602     // the constraints
1603     static const int maxIterations = 500;
1604
1605     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1606     {
1607         int noChanges = 0;
1608
1609         // loop over all children setting their constraints
1610         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1611               node;
1612               node = node->GetNext() )
1613         {
1614             wxWindow *child = node->GetData();
1615             if ( child->IsTopLevel() )
1616             {
1617                 // top level children are not inside our client area
1618                 continue;
1619             }
1620
1621             if ( !child->GetConstraints() || succeeded.Find(child) )
1622             {
1623                 // this one is either already ok or nothing we can do about it
1624                 continue;
1625             }
1626
1627             int tempNoChanges = 0;
1628             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1629                                       : child->LayoutPhase2(&tempNoChanges);
1630             noChanges += tempNoChanges;
1631
1632             if ( success )
1633             {
1634                 succeeded.Append(child);
1635             }
1636         }
1637
1638         if ( !noChanges )
1639         {
1640             // constraints are set
1641             break;
1642         }
1643     }
1644
1645     return true;
1646 }
1647
1648 void wxWindowBase::ResetConstraints()
1649 {
1650     wxLayoutConstraints *constr = GetConstraints();
1651     if ( constr )
1652     {
1653         constr->left.SetDone(false);
1654         constr->top.SetDone(false);
1655         constr->right.SetDone(false);
1656         constr->bottom.SetDone(false);
1657         constr->width.SetDone(false);
1658         constr->height.SetDone(false);
1659         constr->centreX.SetDone(false);
1660         constr->centreY.SetDone(false);
1661     }
1662
1663     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1664     while (node)
1665     {
1666         wxWindow *win = node->GetData();
1667         if ( !win->IsTopLevel() )
1668             win->ResetConstraints();
1669         node = node->GetNext();
1670     }
1671 }
1672
1673 // Need to distinguish between setting the 'fake' size for windows and sizers,
1674 // and setting the real values.
1675 void wxWindowBase::SetConstraintSizes(bool recurse)
1676 {
1677     wxLayoutConstraints *constr = GetConstraints();
1678     if ( constr && constr->AreSatisfied() )
1679     {
1680         int x = constr->left.GetValue();
1681         int y = constr->top.GetValue();
1682         int w = constr->width.GetValue();
1683         int h = constr->height.GetValue();
1684
1685         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1686              (constr->height.GetRelationship() != wxAsIs) )
1687         {
1688             SetSize(x, y, w, h);
1689         }
1690         else
1691         {
1692             // If we don't want to resize this window, just move it...
1693             Move(x, y);
1694         }
1695     }
1696     else if ( constr )
1697     {
1698         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1699                    GetClassInfo()->GetClassName(),
1700                    GetName().c_str());
1701     }
1702
1703     if ( recurse )
1704     {
1705         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1706         while (node)
1707         {
1708             wxWindow *win = node->GetData();
1709             if ( !win->IsTopLevel() && win->GetConstraints() )
1710                 win->SetConstraintSizes();
1711             node = node->GetNext();
1712         }
1713     }
1714 }
1715
1716 // Only set the size/position of the constraint (if any)
1717 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1718 {
1719     wxLayoutConstraints *constr = GetConstraints();
1720     if ( constr )
1721     {
1722         if ( x != -1 )
1723         {
1724             constr->left.SetValue(x);
1725             constr->left.SetDone(true);
1726         }
1727         if ( y != -1 )
1728         {
1729             constr->top.SetValue(y);
1730             constr->top.SetDone(true);
1731         }
1732         if ( w != -1 )
1733         {
1734             constr->width.SetValue(w);
1735             constr->width.SetDone(true);
1736         }
1737         if ( h != -1 )
1738         {
1739             constr->height.SetValue(h);
1740             constr->height.SetDone(true);
1741         }
1742     }
1743 }
1744
1745 void wxWindowBase::MoveConstraint(int x, int y)
1746 {
1747     wxLayoutConstraints *constr = GetConstraints();
1748     if ( constr )
1749     {
1750         if ( x != -1 )
1751         {
1752             constr->left.SetValue(x);
1753             constr->left.SetDone(true);
1754         }
1755         if ( y != -1 )
1756         {
1757             constr->top.SetValue(y);
1758             constr->top.SetDone(true);
1759         }
1760     }
1761 }
1762
1763 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1764 {
1765     wxLayoutConstraints *constr = GetConstraints();
1766     if ( constr )
1767     {
1768         *w = constr->width.GetValue();
1769         *h = constr->height.GetValue();
1770     }
1771     else
1772         GetSize(w, h);
1773 }
1774
1775 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1776 {
1777     wxLayoutConstraints *constr = GetConstraints();
1778     if ( constr )
1779     {
1780         *w = constr->width.GetValue();
1781         *h = constr->height.GetValue();
1782     }
1783     else
1784         GetClientSize(w, h);
1785 }
1786
1787 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1788 {
1789     wxLayoutConstraints *constr = GetConstraints();
1790     if ( constr )
1791     {
1792         *x = constr->left.GetValue();
1793         *y = constr->top.GetValue();
1794     }
1795     else
1796         GetPosition(x, y);
1797 }
1798
1799 #endif // wxUSE_CONSTRAINTS
1800
1801 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1802 {
1803     // don't do it for the dialogs/frames - they float independently of their
1804     // parent
1805     if ( !IsTopLevel() )
1806     {
1807         wxWindow *parent = GetParent();
1808         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1809         {
1810             wxPoint pt(parent->GetClientAreaOrigin());
1811             x += pt.x;
1812             y += pt.y;
1813         }
1814     }
1815 }
1816
1817 // ----------------------------------------------------------------------------
1818 // do Update UI processing for child controls
1819 // ----------------------------------------------------------------------------
1820
1821 void wxWindowBase::UpdateWindowUI(long flags)
1822 {
1823     wxUpdateUIEvent event(GetId());
1824     event.m_eventObject = this;
1825
1826     if ( GetEventHandler()->ProcessEvent(event) )
1827     {
1828         DoUpdateWindowUI(event);
1829     }
1830
1831     if (flags & wxUPDATE_UI_RECURSE)
1832     {
1833         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1834         while (node)
1835         {
1836             wxWindow* child = (wxWindow*) node->GetData();
1837             child->UpdateWindowUI(flags);
1838             node = node->GetNext();
1839         }
1840     }
1841 }
1842
1843 // do the window-specific processing after processing the update event
1844 // TODO: take specific knowledge out of this function and
1845 // put in each control's base class. Unfortunately we don't
1846 // yet have base implementation files for wxCheckBox and wxRadioButton.
1847 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1848 {
1849     if ( event.GetSetEnabled() )
1850         Enable(event.GetEnabled());
1851
1852 #if wxUSE_CONTROLS
1853     if ( event.GetSetText() )
1854     {
1855         wxControl *control = wxDynamicCastThis(wxControl);
1856         if ( control )
1857         {
1858             if ( event.GetText() != control->GetLabel() )
1859                 control->SetLabel(event.GetText());
1860         }
1861 #if wxUSE_CHECKBOX
1862         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1863         if ( checkbox )
1864         {
1865             if ( event.GetSetChecked() )
1866                 checkbox->SetValue(event.GetChecked());
1867         }
1868 #endif // wxUSE_CHECKBOX
1869
1870 #if wxUSE_RADIOBTN
1871         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1872         if ( radiobtn )
1873         {
1874             if ( event.GetSetChecked() )
1875                 radiobtn->SetValue(event.GetChecked());
1876         }
1877 #endif // wxUSE_RADIOBTN
1878     }
1879 #endif
1880 }
1881
1882 #if 0
1883 // call internal idle recursively
1884 // may be obsolete (wait until OnIdle scheme stabilises)
1885 void wxWindowBase::ProcessInternalIdle()
1886 {
1887     OnInternalIdle();
1888
1889     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1890     while (node)
1891     {
1892         wxWindow *child = node->GetData();
1893         child->ProcessInternalIdle();
1894         node = node->GetNext();
1895     }
1896 }
1897 #endif
1898
1899 // ----------------------------------------------------------------------------
1900 // dialog units translations
1901 // ----------------------------------------------------------------------------
1902
1903 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1904 {
1905     int charWidth = GetCharWidth();
1906     int charHeight = GetCharHeight();
1907     wxPoint pt2(-1, -1);
1908     if (pt.x != -1)
1909         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1910     if (pt.y != -1)
1911         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1912
1913     return pt2;
1914 }
1915
1916 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1917 {
1918     int charWidth = GetCharWidth();
1919     int charHeight = GetCharHeight();
1920     wxPoint pt2(-1, -1);
1921     if (pt.x != -1)
1922         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1923     if (pt.y != -1)
1924         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1925
1926     return pt2;
1927 }
1928
1929 // ----------------------------------------------------------------------------
1930 // event handlers
1931 // ----------------------------------------------------------------------------
1932
1933 // propagate the colour change event to the subwindows
1934 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1935 {
1936     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1937     while ( node )
1938     {
1939         // Only propagate to non-top-level windows
1940         wxWindow *win = node->GetData();
1941         if ( !win->IsTopLevel() )
1942         {
1943             wxSysColourChangedEvent event2;
1944             event.m_eventObject = win;
1945             win->GetEventHandler()->ProcessEvent(event2);
1946         }
1947
1948         node = node->GetNext();
1949     }
1950 }
1951
1952 // the default action is to populate dialog with data when it's created,
1953 // and nudge the UI into displaying itself correctly in case
1954 // we've turned the wxUpdateUIEvents frequency down low.
1955 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1956 {
1957     TransferDataToWindow();
1958
1959     // Update the UI at this point
1960     UpdateWindowUI(wxUPDATE_UI_RECURSE);
1961 }
1962
1963 // process Ctrl-Alt-mclick
1964 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1965 {
1966 #if wxUSE_MSGDLG
1967     if ( event.ControlDown() && event.AltDown() )
1968     {
1969         // don't translate these strings
1970         wxString port;
1971
1972 #ifdef __WXUNIVERSAL__
1973         port = _T("Univ/");
1974 #endif // __WXUNIVERSAL__
1975
1976         switch ( wxGetOsVersion() )
1977         {
1978             case wxMOTIF_X:     port += _T("Motif"); break;
1979             case wxMAC:
1980             case wxMAC_DARWIN:  port += _T("Mac"); break;
1981             case wxBEOS:        port += _T("BeOS"); break;
1982             case wxGTK:
1983             case wxGTK_WIN32:
1984             case wxGTK_OS2:
1985             case wxGTK_BEOS:    port += _T("GTK"); break;
1986             case wxWINDOWS:
1987             case wxPENWINDOWS:
1988             case wxWINDOWS_NT:
1989             case wxWIN32S:
1990             case wxWIN95:
1991             case wxWIN386:      port += _T("MS Windows"); break;
1992             case wxMGL_UNIX:
1993             case wxMGL_X:
1994             case wxMGL_WIN32:
1995             case wxMGL_OS2:     port += _T("MGL"); break;
1996             case wxWINDOWS_OS2:
1997             case wxOS2_PM:      port += _T("OS/2"); break;
1998             default:            port += _T("unknown"); break;
1999         }
2000
2001         wxMessageBox(wxString::Format(
2002                                       _T(
2003                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
2004                                         ),
2005                                       port.c_str(),
2006                                       wxMAJOR_VERSION,
2007                                       wxMINOR_VERSION,
2008                                       wxRELEASE_NUMBER,
2009 #if wxUSE_UNICODE
2010                                       L" (Unicode)",
2011 #else
2012                                       "",
2013 #endif
2014                                       __TDATE__,
2015                                       __TTIME__
2016                                      ),
2017                      _T("wxWindows information"),
2018                      wxICON_INFORMATION | wxOK,
2019                      (wxWindow *)this);
2020     }
2021     else
2022 #endif // wxUSE_MSGDLG
2023     {
2024         event.Skip();
2025     }
2026 }
2027
2028 // ----------------------------------------------------------------------------
2029 // accessibility
2030 // ----------------------------------------------------------------------------
2031
2032 #if wxUSE_ACCESSIBILITY
2033 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2034 {
2035     if (m_accessible && (accessible != m_accessible))
2036         delete m_accessible;
2037     m_accessible = accessible;
2038     if (m_accessible)
2039         m_accessible->SetWindow((wxWindow*) this);
2040 }
2041
2042 // Returns the accessible object, creating if necessary.
2043 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2044 {
2045     if (!m_accessible)
2046         m_accessible = CreateAccessible();
2047     return m_accessible;
2048 }
2049
2050 // Override to create a specific accessible object.
2051 wxAccessible* wxWindowBase::CreateAccessible()
2052 {
2053     return new wxWindowAccessible((wxWindow*) this);
2054 }
2055
2056 #endif
2057
2058 #if !wxUSE_STL
2059 // ----------------------------------------------------------------------------
2060 // list classes implementation
2061 // ----------------------------------------------------------------------------
2062
2063 void wxWindowListNode::DeleteData()
2064 {
2065     delete (wxWindow *)GetData();
2066 }
2067 #endif
2068
2069 // ----------------------------------------------------------------------------
2070 // borders
2071 // ----------------------------------------------------------------------------
2072
2073 wxBorder wxWindowBase::GetBorder(long flags) const
2074 {
2075     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2076     if ( border == wxBORDER_DEFAULT )
2077     {
2078         border = GetDefaultBorder();
2079     }
2080
2081     return border;
2082 }
2083
2084 wxBorder wxWindowBase::GetDefaultBorder() const
2085 {
2086     return wxBORDER_NONE;
2087 }
2088
2089 // ----------------------------------------------------------------------------
2090 // hit testing
2091 // ----------------------------------------------------------------------------
2092
2093 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2094 {
2095     // here we just check if the point is inside the window or not
2096
2097     // check the top and left border first
2098     bool outside = x < 0 || y < 0;
2099     if ( !outside )
2100     {
2101         // check the right and bottom borders too
2102         wxSize size = GetSize();
2103         outside = x >= size.x || y >= size.y;
2104     }
2105
2106     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2107 }
2108
2109 // ----------------------------------------------------------------------------
2110 // mouse capture
2111 // ----------------------------------------------------------------------------
2112
2113 struct WXDLLEXPORT wxWindowNext
2114 {
2115     wxWindow *win;
2116     wxWindowNext *next;
2117 } *wxWindowBase::ms_winCaptureNext = NULL;
2118
2119 void wxWindowBase::CaptureMouse()
2120 {
2121     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2122
2123     wxWindow *winOld = GetCapture();
2124     if ( winOld )
2125     {
2126         ((wxWindowBase*) winOld)->DoReleaseMouse();
2127
2128         // save it on stack
2129         wxWindowNext *item = new wxWindowNext;
2130         item->win = winOld;
2131         item->next = ms_winCaptureNext;
2132         ms_winCaptureNext = item;
2133     }
2134     //else: no mouse capture to save
2135
2136     DoCaptureMouse();
2137 }
2138
2139 void wxWindowBase::ReleaseMouse()
2140 {
2141     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2142
2143     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2144
2145     DoReleaseMouse();
2146
2147     if ( ms_winCaptureNext )
2148     {
2149         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2150
2151         wxWindowNext *item = ms_winCaptureNext;
2152         ms_winCaptureNext = item->next;
2153         delete item;
2154     }
2155     //else: stack is empty, no previous capture
2156
2157     wxLogTrace(_T("mousecapture"),
2158         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2159         GetCapture());
2160 }
2161
2162 #if wxUSE_HOTKEY
2163
2164 bool
2165 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2166                              int WXUNUSED(modifiers),
2167                              int WXUNUSED(keycode))
2168 {
2169     // not implemented
2170     return false;
2171 }
2172
2173 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2174 {
2175     // not implemented
2176     return false;
2177 }
2178
2179 #endif // wxUSE_HOTKEY
2180
2181 void wxWindowBase::SendDestroyEvent()
2182 {
2183     wxWindowDestroyEvent event;
2184     event.SetEventObject(this);
2185     event.SetId(GetId());
2186     GetEventHandler()->ProcessEvent(event);
2187 }
2188
2189 // ----------------------------------------------------------------------------
2190 // event processing
2191 // ----------------------------------------------------------------------------
2192
2193 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2194 {
2195 #if wxUSE_VALIDATORS
2196     // Can only use the validator of the window which
2197     // is receiving the event
2198     if ( event.GetEventObject() == this )
2199     {
2200         wxValidator *validator = GetValidator();
2201         if ( validator && validator->ProcessEvent(event) )
2202         {
2203             return true;
2204         }
2205     }
2206 #endif // wxUSE_VALIDATORS
2207
2208     return false;
2209 }
2210
2211 bool wxWindowBase::TryParent(wxEvent& event)
2212 {
2213     // carry on up the parent-child hierarchy if the propgation count hasn't
2214     // reached zero yet
2215     if ( event.ShouldPropagate() )
2216     {
2217         // honour the requests to stop propagation at this window: this is
2218         // used by the dialogs, for example, to prevent processing the events
2219         // from the dialog controls in the parent frame which rarely, if ever,
2220         // makes sense
2221         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2222         {
2223             wxWindow *parent = GetParent();
2224             if ( parent && !parent->IsBeingDeleted() )
2225             {
2226                 wxPropagateOnce propagateOnce(event);
2227
2228                 return parent->GetEventHandler()->ProcessEvent(event);
2229             }
2230         }
2231     }
2232
2233     return wxEvtHandler::TryParent(event);
2234 }
2235
2236 // ----------------------------------------------------------------------------
2237 // global functions
2238 // ----------------------------------------------------------------------------
2239
2240 wxWindow* wxGetTopLevelParent(wxWindow *win)
2241 {
2242     while ( win && !win->IsTopLevel() )
2243          win = win->GetParent();
2244
2245     return win;
2246 }
2247
2248 #if wxUSE_ACCESSIBILITY
2249 // ----------------------------------------------------------------------------
2250 // accessible object for windows
2251 // ----------------------------------------------------------------------------
2252
2253 // Can return either a child object, or an integer
2254 // representing the child element, starting from 1.
2255 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2256 {
2257     wxASSERT( GetWindow() != NULL );
2258     if (!GetWindow())
2259         return wxACC_FAIL;
2260
2261     return wxACC_NOT_IMPLEMENTED;
2262 }
2263
2264 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2265 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2266 {
2267     wxASSERT( GetWindow() != NULL );
2268     if (!GetWindow())
2269         return wxACC_FAIL;
2270
2271     wxWindow* win = NULL;
2272     if (elementId == 0)
2273     {
2274         win = GetWindow();
2275     }
2276     else
2277     {
2278         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2279         {
2280             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2281         }
2282         else
2283             return wxACC_FAIL;
2284     }
2285     if (win)
2286     {
2287         rect = win->GetRect();
2288         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2289             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2290         return wxACC_OK;
2291     }
2292
2293     return wxACC_NOT_IMPLEMENTED;
2294 }
2295
2296 // Navigates from fromId to toId/toObject.
2297 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2298                              int* WXUNUSED(toId), wxAccessible** toObject)
2299 {
2300     wxASSERT( GetWindow() != NULL );
2301     if (!GetWindow())
2302         return wxACC_FAIL;
2303
2304     switch (navDir)
2305     {
2306     case wxNAVDIR_FIRSTCHILD:
2307         {
2308             if (GetWindow()->GetChildren().GetCount() == 0)
2309                 return wxACC_FALSE;
2310             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2311             *toObject = childWindow->GetOrCreateAccessible();
2312
2313             return wxACC_OK;
2314         }
2315     case wxNAVDIR_LASTCHILD:
2316         {
2317             if (GetWindow()->GetChildren().GetCount() == 0)
2318                 return wxACC_FALSE;
2319             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2320             *toObject = childWindow->GetOrCreateAccessible();
2321
2322             return wxACC_OK;
2323         }
2324     case wxNAVDIR_RIGHT:
2325     case wxNAVDIR_DOWN:
2326     case wxNAVDIR_NEXT:
2327         {
2328             wxWindowList::compatibility_iterator node =
2329                 wxWindowList::compatibility_iterator();
2330             if (fromId == 0)
2331             {
2332                 // Can't navigate to sibling of this window
2333                 // if we're a top-level window.
2334                 if (!GetWindow()->GetParent())
2335                     return wxACC_NOT_IMPLEMENTED;
2336
2337                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2338             }
2339             else
2340             {
2341                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2342                     node = GetWindow()->GetChildren().Item(fromId-1);
2343             }
2344
2345             if (node && node->GetNext())
2346             {
2347                 wxWindow* nextWindow = node->GetNext()->GetData();
2348                 *toObject = nextWindow->GetOrCreateAccessible();
2349                 return wxACC_OK;
2350             }
2351             else
2352                 return wxACC_FALSE;
2353         }
2354     case wxNAVDIR_LEFT:
2355     case wxNAVDIR_UP:
2356     case wxNAVDIR_PREVIOUS:
2357         {
2358             wxWindowList::compatibility_iterator node =
2359                 wxWindowList::compatibility_iterator();
2360             if (fromId == 0)
2361             {
2362                 // Can't navigate to sibling of this window
2363                 // if we're a top-level window.
2364                 if (!GetWindow()->GetParent())
2365                     return wxACC_NOT_IMPLEMENTED;
2366
2367                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2368             }
2369             else
2370             {
2371                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2372                     node = GetWindow()->GetChildren().Item(fromId-1);
2373             }
2374
2375             if (node && node->GetPrevious())
2376             {
2377                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2378                 *toObject = previousWindow->GetOrCreateAccessible();
2379                 return wxACC_OK;
2380             }
2381             else
2382                 return wxACC_FALSE;
2383         }
2384     }
2385
2386     return wxACC_NOT_IMPLEMENTED;
2387 }
2388
2389 // Gets the name of the specified object.
2390 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2391 {
2392     wxASSERT( GetWindow() != NULL );
2393     if (!GetWindow())
2394         return wxACC_FAIL;
2395
2396     wxString title;
2397
2398     // If a child, leave wxWindows to call the function on the actual
2399     // child object.
2400     if (childId > 0)
2401         return wxACC_NOT_IMPLEMENTED;
2402
2403     // This will eventually be replaced by specialised
2404     // accessible classes, one for each kind of wxWindows
2405     // control or window.
2406     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2407         title = ((wxButton*) GetWindow())->GetLabel();
2408     else
2409         title = GetWindow()->GetName();
2410
2411     if (!title.IsEmpty())
2412     {
2413         *name = title;
2414         return wxACC_OK;
2415     }
2416     else
2417         return wxACC_NOT_IMPLEMENTED;
2418 }
2419
2420 // Gets the number of children.
2421 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2422 {
2423     wxASSERT( GetWindow() != NULL );
2424     if (!GetWindow())
2425         return wxACC_FAIL;
2426
2427     *childId = (int) GetWindow()->GetChildren().GetCount();
2428     return wxACC_OK;
2429 }
2430
2431 // Gets the specified child (starting from 1).
2432 // If *child is NULL and return value is wxACC_OK,
2433 // this means that the child is a simple element and
2434 // not an accessible object.
2435 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2436 {
2437     wxASSERT( GetWindow() != NULL );
2438     if (!GetWindow())
2439         return wxACC_FAIL;
2440
2441     if (childId == 0)
2442     {
2443         *child = this;
2444         return wxACC_OK;
2445     }
2446
2447     if (childId > (int) GetWindow()->GetChildren().GetCount())
2448         return wxACC_FAIL;
2449
2450     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2451     *child = childWindow->GetOrCreateAccessible();
2452     if (*child)
2453         return wxACC_OK;
2454     else
2455         return wxACC_FAIL;
2456 }
2457
2458 // Gets the parent, or NULL.
2459 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2460 {
2461     wxASSERT( GetWindow() != NULL );
2462     if (!GetWindow())
2463         return wxACC_FAIL;
2464
2465     wxWindow* parentWindow = GetWindow()->GetParent();
2466     if (!parentWindow)
2467     {
2468         *parent = NULL;
2469         return wxACC_OK;
2470     }
2471     else
2472     {
2473         *parent = parentWindow->GetOrCreateAccessible();
2474         if (*parent)
2475             return wxACC_OK;
2476         else
2477             return wxACC_FAIL;
2478     }
2479 }
2480
2481 // Performs the default action. childId is 0 (the action for this object)
2482 // or > 0 (the action for a child).
2483 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2484 // window (e.g. an edit control).
2485 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2486 {
2487     wxASSERT( GetWindow() != NULL );
2488     if (!GetWindow())
2489         return wxACC_FAIL;
2490
2491     return wxACC_NOT_IMPLEMENTED;
2492 }
2493
2494 // Gets the default action for this object (0) or > 0 (the action for a child).
2495 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2496 // string if there is no action.
2497 // The retrieved string describes the action that is performed on an object,
2498 // not what the object does as a result. For example, a toolbar button that prints
2499 // a document has a default action of "Press" rather than "Prints the current document."
2500 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2501 {
2502     wxASSERT( GetWindow() != NULL );
2503     if (!GetWindow())
2504         return wxACC_FAIL;
2505
2506     return wxACC_NOT_IMPLEMENTED;
2507 }
2508
2509 // Returns the description for this object or a child.
2510 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2511 {
2512     wxASSERT( GetWindow() != NULL );
2513     if (!GetWindow())
2514         return wxACC_FAIL;
2515
2516     wxString ht(GetWindow()->GetHelpText());
2517     if (!ht.IsEmpty())
2518     {
2519         *description = ht;
2520         return wxACC_OK;
2521     }
2522     return wxACC_NOT_IMPLEMENTED;
2523 }
2524
2525 // Returns help text for this object or a child, similar to tooltip text.
2526 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2527 {
2528     wxASSERT( GetWindow() != NULL );
2529     if (!GetWindow())
2530         return wxACC_FAIL;
2531
2532     wxString ht(GetWindow()->GetHelpText());
2533     if (!ht.IsEmpty())
2534     {
2535         *helpText = ht;
2536         return wxACC_OK;
2537     }
2538     return wxACC_NOT_IMPLEMENTED;
2539 }
2540
2541 // Returns the keyboard shortcut for this object or child.
2542 // Return e.g. ALT+K
2543 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2544 {
2545     wxASSERT( GetWindow() != NULL );
2546     if (!GetWindow())
2547         return wxACC_FAIL;
2548
2549     return wxACC_NOT_IMPLEMENTED;
2550 }
2551
2552 // Returns a role constant.
2553 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2554 {
2555     wxASSERT( GetWindow() != NULL );
2556     if (!GetWindow())
2557         return wxACC_FAIL;
2558
2559     // If a child, leave wxWindows to call the function on the actual
2560     // child object.
2561     if (childId > 0)
2562         return wxACC_NOT_IMPLEMENTED;
2563
2564     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2565         return wxACC_NOT_IMPLEMENTED;
2566 #if wxUSE_STATUSBAR
2567     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2568         return wxACC_NOT_IMPLEMENTED;
2569 #endif
2570 #if wxUSE_TOOLBAR
2571     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2572         return wxACC_NOT_IMPLEMENTED;
2573 #endif
2574
2575     //*role = wxROLE_SYSTEM_CLIENT;
2576     *role = wxROLE_SYSTEM_CLIENT;
2577     return wxACC_OK;
2578
2579     #if 0
2580     return wxACC_NOT_IMPLEMENTED;
2581     #endif
2582 }
2583
2584 // Returns a state constant.
2585 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2586 {
2587     wxASSERT( GetWindow() != NULL );
2588     if (!GetWindow())
2589         return wxACC_FAIL;
2590
2591     // If a child, leave wxWindows to call the function on the actual
2592     // child object.
2593     if (childId > 0)
2594         return wxACC_NOT_IMPLEMENTED;
2595
2596     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2597         return wxACC_NOT_IMPLEMENTED;
2598
2599 #if wxUSE_STATUSBAR
2600     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2601         return wxACC_NOT_IMPLEMENTED;
2602 #endif
2603 #if wxUSE_TOOLBAR
2604     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2605         return wxACC_NOT_IMPLEMENTED;
2606 #endif
2607
2608     *state = 0;
2609     return wxACC_OK;
2610
2611     #if 0
2612     return wxACC_NOT_IMPLEMENTED;
2613     #endif
2614 }
2615
2616 // Returns a localized string representing the value for the object
2617 // or child.
2618 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2619 {
2620     wxASSERT( GetWindow() != NULL );
2621     if (!GetWindow())
2622         return wxACC_FAIL;
2623
2624     return wxACC_NOT_IMPLEMENTED;
2625 }
2626
2627 // Selects the object or child.
2628 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2629 {
2630     wxASSERT( GetWindow() != NULL );
2631     if (!GetWindow())
2632         return wxACC_FAIL;
2633
2634     return wxACC_NOT_IMPLEMENTED;
2635 }
2636
2637 // Gets the window with the keyboard focus.
2638 // If childId is 0 and child is NULL, no object in
2639 // this subhierarchy has the focus.
2640 // If this object has the focus, child should be 'this'.
2641 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2642 {
2643     wxASSERT( GetWindow() != NULL );
2644     if (!GetWindow())
2645         return wxACC_FAIL;
2646
2647     return wxACC_NOT_IMPLEMENTED;
2648 }
2649
2650 // Gets a variant representing the selected children
2651 // of this object.
2652 // Acceptable values:
2653 // - a null variant (IsNull() returns TRUE)
2654 // - a list variant (GetType() == wxT("list")
2655 // - an integer representing the selected child element,
2656 //   or 0 if this object is selected (GetType() == wxT("long")
2657 // - a "void*" pointer to a wxAccessible child object
2658 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2659 {
2660     wxASSERT( GetWindow() != NULL );
2661     if (!GetWindow())
2662         return wxACC_FAIL;
2663
2664     return wxACC_NOT_IMPLEMENTED;
2665 }
2666
2667 #endif // wxUSE_ACCESSIBILITY