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 :   m_bestSize(wxDefaultSize)
 114 {
 115     // no window yet, no parent nor children
 116     m_parent = (wxWindow *)NULL;
 117     m_windowId = wxID_ANY;
 118
 119     // no constraints on the minimal window size
 120     m_minWidth =
 121     m_minHeight =
 122     m_maxWidth =
 123     m_maxHeight = -1;
 124
 125     // window are created enabled and visible by default
 126     m_isShown =
 127     m_isEnabled = true;
 128
 129     // the default event handler is just this window
 130     m_eventHandler = this;
 131
 132 #if wxUSE_VALIDATORS
 133     // no validator
 134     m_windowValidator = (wxValidator *) NULL;
 135 #endif // wxUSE_VALIDATORS
 136
 137     // the colours/fonts are default for now, so leave m_font,
 138     // m_backgroundColour and m_foregroundColour uninitialized and set those
 139     m_hasBgCol =
 140     m_hasFgCol =
 141     m_hasFont = false;
 142
 143     // no style bits
 144     m_exStyle =
 145     m_windowStyle = 0;
 146
 147 #if wxUSE_CONSTRAINTS
 148     // no constraints whatsoever
 149     m_constraints = (wxLayoutConstraints *) NULL;
 150     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 151 #endif // wxUSE_CONSTRAINTS
 152
 153     m_windowSizer = (wxSizer *) NULL;
 154     m_containingSizer = (wxSizer *) NULL;
 155     m_autoLayout = false;
 156
 157 #if wxUSE_DRAG_AND_DROP
 158     m_dropTarget = (wxDropTarget *)NULL;
 159 #endif // wxUSE_DRAG_AND_DROP
 160
 161 #if wxUSE_TOOLTIPS
 162     m_tooltip = (wxToolTip *)NULL;
 163 #endif // wxUSE_TOOLTIPS
 164
 165 #if wxUSE_CARET
 166     m_caret = (wxCaret *)NULL;
 167 #endif // wxUSE_CARET
 168
 169 #if wxUSE_PALETTE
 170     m_hasCustomPalette = false;
 171 #endif // wxUSE_PALETTE
 172
 173 #if wxUSE_ACCESSIBILITY
 174     m_accessible = NULL;
 175 #endif
 176
 177     m_virtualSize = wxDefaultSize;
 178
 179     m_minVirtualWidth =
 180     m_minVirtualHeight =
 181     m_maxVirtualWidth =
 182     m_maxVirtualHeight = -1;
 183
 184     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 185
 186     // Whether we're using the current theme for this window (wxGTK only for now)
 187     m_themeEnabled = false;
 188
 189     // VZ: this one shouldn't exist...
 190     m_isBeingDeleted = false;
 191 }
 192
 193 // common part of window creation process
 194 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 195                               wxWindowID id,
 196                               const wxPoint& WXUNUSED(pos),
 197                               const wxSize& size,
 198                               long style,
 199                               const wxValidator& wxVALIDATOR_PARAM(validator),
 200                               const wxString& name)
 201 {
 202 #if wxUSE_STATBOX
 203     // wxGTK doesn't allow to create controls with static box as the parent so
 204     // this will result in a crash when the program is ported to wxGTK so warn
 205     // the user about it
 206
 207     // if you get this assert, the correct solution is to create the controls
 208     // as siblings of the static box
 209     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 210                   _T("wxStaticBox can't be used as a window parent!") );
 211 #endif // wxUSE_STATBOX
 212
 213     // ids are limited to 16 bits under MSW so if you care about portability,
 214     // it's not a good idea to use ids out of this range (and negative ids are
 215     // reserved for wxWindows own usage)
 216     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 217                   _T("invalid id value") );
 218
 219     // generate a new id if the user doesn't care about it
 220     m_windowId = id == wxID_ANY ? NewControlId() : id;
 221
 222     SetName(name);
 223     SetWindowStyleFlag(style);
 224     SetParent(parent);
 225
 226     // Set the minsize to be the size passed to the ctor (if any) for
 227     // non-TLWs.  This is so items used in a sizer will use this explicitly
 228     // set size for layout, instead of falling back the (probably smaller)
 229     // bestsize.
 230     if (! IsTopLevel())
 231         SetSizeHints(size);
 232
 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         // Windows which don't implement DoGetBestSize and aren't parents.
 598         // This emulates the behavior of a wxSizer without wxADJUST_MINSIZE
 599
 600         // If you get the following message you should do one of two things
 601         // 1. Do what it says (best)
 602         // 2. m_bestSize = GetSize() at end of Create() (hack)
 603         if(m_bestSize == wxDefaultSize)
 604         {
 605             wxLogDebug(wxT("Class %s (or superclass) should implement DoGetBestSize()"),GetClassInfo()->GetClassName());
 606             wxConstCast(this,wxWindowBase)->m_bestSize = GetSize();
 607         }
 608         return m_bestSize;
 609     }
 610 }
 611
 612 // by default the origin is not shifted
 613 wxPoint wxWindowBase::GetClientAreaOrigin() const
 614 {
 615     return wxPoint(0, 0);
 616 }
 617
 618 // set the min/max size of the window
 619 void wxWindowBase::SetSizeHints(int minW, int minH,
 620                                 int maxW, int maxH,
 621                                 int WXUNUSED(incW), int WXUNUSED(incH))
 622 {
 623     // setting min width greater than max width leads to infinite loops under
 624     // X11 and generally doesn't make any sense, so don't allow it
 625     wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
 626                     (minH == -1 || maxH == -1 || minH <= maxH),
 627                  _T("min width/height must be less than max width/height!") );
 628
 629     m_minWidth = minW;
 630     m_maxWidth = maxW;
 631     m_minHeight = minH;
 632     m_maxHeight = maxH;
 633 }
 634
 635 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 636 {
 637     if ( m_windowVariant != variant )
 638     {
 639         m_windowVariant = variant;
 640
 641         DoSetWindowVariant(variant);
 642     }
 643 }
 644
 645 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 646 {
 647     // adjust the font height to correspond to our new variant (notice that
 648     // we're only called if something really changed)
 649     wxFont font = GetFont();
 650     int size = font.GetPointSize();
 651     switch ( variant )
 652     {
 653         case wxWINDOW_VARIANT_NORMAL:
 654             break;
 655
 656         case wxWINDOW_VARIANT_SMALL:
 657             size *= 3;
 658             size /= 4;
 659             break;
 660
 661         case wxWINDOW_VARIANT_MINI:
 662             size *= 2;
 663             size /= 3;
 664             break;
 665
 666         case wxWINDOW_VARIANT_LARGE:
 667             size *= 5;
 668             size /= 4;
 669             break;
 670
 671         default:
 672             wxFAIL_MSG(_T("unexpected window variant"));
 673             break;
 674     }
 675
 676     font.SetPointSize(size);
 677     SetFont(font);
 678 }
 679
 680 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 681                                         int maxW, int maxH )
 682 {
 683     m_minVirtualWidth = minW;
 684     m_maxVirtualWidth = maxW;
 685     m_minVirtualHeight = minH;
 686     m_maxVirtualHeight = maxH;
 687 }
 688
 689 void wxWindowBase::DoSetVirtualSize( int x, int y )
 690 {
 691     if ( m_minVirtualWidth != -1 && m_minVirtualWidth > x )
 692         x = m_minVirtualWidth;
 693     if ( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )
 694         x = m_maxVirtualWidth;
 695     if ( m_minVirtualHeight != -1 && m_minVirtualHeight > y )
 696         y = m_minVirtualHeight;
 697     if ( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y )
 698         y = m_maxVirtualHeight;
 699
 700     m_virtualSize = wxSize(x, y);
 701 }
 702
 703 wxSize wxWindowBase::DoGetVirtualSize() const
 704 {
 705     wxSize  s( GetClientSize() );
 706
 707     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 708                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 709 }
 710
 711 // ----------------------------------------------------------------------------
 712 // show/hide/enable/disable the window
 713 // ----------------------------------------------------------------------------
 714
 715 bool wxWindowBase::Show(bool show)
 716 {
 717     if ( show != m_isShown )
 718     {
 719         m_isShown = show;
 720
 721         return true;
 722     }
 723     else
 724     {
 725         return false;
 726     }
 727 }
 728
 729 bool wxWindowBase::Enable(bool enable)
 730 {
 731     if ( enable != m_isEnabled )
 732     {
 733         m_isEnabled = enable;
 734
 735         return true;
 736     }
 737     else
 738     {
 739         return false;
 740     }
 741 }
 742 // ----------------------------------------------------------------------------
 743 // RTTI
 744 // ----------------------------------------------------------------------------
 745
 746 bool wxWindowBase::IsTopLevel() const
 747 {
 748     return false;
 749 }
 750
 751 // ----------------------------------------------------------------------------
 752 // reparenting the window
 753 // ----------------------------------------------------------------------------
 754
 755 void wxWindowBase::AddChild(wxWindowBase *child)
 756 {
 757     wxCHECK_RET( child, wxT("can't add a NULL child") );
 758
 759     // this should never happen and it will lead to a crash later if it does
 760     // because RemoveChild() will remove only one node from the children list
 761     // and the other(s) one(s) will be left with dangling pointers in them
 762     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 763
 764     GetChildren().Append((wxWindow*)child);
 765     child->SetParent(this);
 766 }
 767
 768 void wxWindowBase::RemoveChild(wxWindowBase *child)
 769 {
 770     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 771
 772     GetChildren().DeleteObject((wxWindow *)child);
 773     child->SetParent(NULL);
 774 }
 775
 776 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 777 {
 778     wxWindow *oldParent = GetParent();
 779     if ( newParent == oldParent )
 780     {
 781         // nothing done
 782         return false;
 783     }
 784
 785     // unlink this window from the existing parent.
 786     if ( oldParent )
 787     {
 788         oldParent->RemoveChild(this);
 789     }
 790     else
 791     {
 792         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 793     }
 794
 795     // add it to the new one
 796     if ( newParent )
 797     {
 798         newParent->AddChild(this);
 799     }
 800     else
 801     {
 802         wxTopLevelWindows.Append((wxWindow *)this);
 803     }
 804
 805     return true;
 806 }
 807
 808 // ----------------------------------------------------------------------------
 809 // event handler stuff
 810 // ----------------------------------------------------------------------------
 811
 812 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 813 {
 814     wxEvtHandler *handlerOld = GetEventHandler();
 815
 816     handler->SetNextHandler(handlerOld);
 817
 818     if ( handlerOld )
 819         GetEventHandler()->SetPreviousHandler(handler);
 820
 821     SetEventHandler(handler);
 822 }
 823
 824 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 825 {
 826     wxEvtHandler *handlerA = GetEventHandler();
 827     if ( handlerA )
 828     {
 829         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 830         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 831
 832         if ( handlerB )
 833             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 834         SetEventHandler(handlerB);
 835
 836         if ( deleteHandler )
 837         {
 838             delete handlerA;
 839             handlerA = (wxEvtHandler *)NULL;
 840         }
 841     }
 842
 843     return handlerA;
 844 }
 845
 846 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 847 {
 848     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 849
 850     wxEvtHandler *handlerPrev = NULL,
 851                  *handlerCur = GetEventHandler();
 852     while ( handlerCur )
 853     {
 854         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 855
 856         if ( handlerCur == handler )
 857         {
 858             if ( handlerPrev )
 859             {
 860                 handlerPrev->SetNextHandler(handlerNext);
 861             }
 862             else
 863             {
 864                 SetEventHandler(handlerNext);
 865             }
 866
 867             if ( handlerNext )
 868             {
 869                 handlerNext->SetPreviousHandler ( handlerPrev );
 870             }
 871
 872             handler->SetNextHandler(NULL);
 873             handler->SetPreviousHandler(NULL);
 874
 875             return true;
 876         }
 877
 878         handlerPrev = handlerCur;
 879         handlerCur = handlerNext;
 880     }
 881
 882     wxFAIL_MSG( _T("where has the event handler gone?") );
 883
 884     return false;
 885 }
 886
 887 // ----------------------------------------------------------------------------
 888 // colours, fonts &c
 889 // ----------------------------------------------------------------------------
 890
 891 void wxWindowBase::InheritAttributes()
 892 {
 893     const wxWindow * const parent = GetParent();
 894     if ( !parent )
 895         return;
 896
 897     // we only inherit attributes which had been explicitly set for the parent
 898     // which ensures that this only happens if the user really wants it and
 899     // not by default which wouldn't make any sense in modern GUIs where the
 900     // controls don't all use the same fonts (nor colours)
 901     if ( parent->m_hasFont && !m_hasFont )
 902         SetFont(parent->GetFont());
 903
 904     // in addition, there is a possibility to explicitly forbid inheriting
 905     // colours at each class level by overriding ShouldInheritColours()
 906     if ( ShouldInheritColours() )
 907     {
 908         if ( parent->m_hasFgCol && !m_hasFgCol )
 909             SetForegroundColour(parent->GetForegroundColour());
 910
 911         if ( parent->m_hasBgCol && !m_hasBgCol )
 912             SetBackgroundColour(parent->GetBackgroundColour());
 913     }
 914 }
 915
 916 /* static */ wxVisualAttributes
 917 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 918 {
 919     // it is important to return valid values for all attributes from here,
 920     // GetXXX() below rely on this
 921     wxVisualAttributes attrs;
 922     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 923     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 924     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 925
 926     return attrs;
 927 }
 928
 929 wxColour wxWindowBase::GetBackgroundColour() const
 930 {
 931     if ( !m_backgroundColour.Ok() )
 932     {
 933         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 934
 935         // get our default background colour
 936         wxColour colBg = GetDefaultAttributes().colBg;
 937
 938         // we must return some valid colour to avoid redoing this every time
 939         // and also to avoid surprizing the applications written for older
 940         // wxWindows versions where GetBackgroundColour() always returned
 941         // something -- so give them something even if it doesn't make sense
 942         // for this window (e.g. it has a themed background)
 943         if ( !colBg.Ok() )
 944             colBg = GetClassDefaultAttributes().colBg;
 945
 946         // cache it for the next call
 947         wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
 948     }
 949
 950     return m_backgroundColour;
 951 }
 952
 953 wxColour wxWindowBase::GetForegroundColour() const
 954 {
 955     // logic is the same as above
 956     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 957     {
 958         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 959
 960         wxColour colFg = GetDefaultAttributes().colFg;
 961
 962         if ( !colFg.Ok() )
 963             colFg = GetClassDefaultAttributes().colFg;
 964
 965         wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
 966     }
 967
 968     return m_foregroundColour;
 969 }
 970
 971 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 972 {
 973     if ( !colour.Ok() || (colour == m_backgroundColour) )
 974         return false;
 975
 976     m_backgroundColour = colour;
 977
 978     m_hasBgCol = true;
 979
 980     return true;
 981 }
 982
 983 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 984 {
 985     if ( !colour.Ok() || (colour == m_foregroundColour) )
 986         return false;
 987
 988     m_foregroundColour = colour;
 989
 990     m_hasFgCol = true;
 991
 992     return true;
 993 }
 994
 995 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 996 {
 997     // setting an invalid cursor is ok, it means that we don't have any special
 998     // cursor
 999     if ( m_cursor == cursor )
1000     {
1001         // no change
1002         return false;
1003     }
1004
1005     m_cursor = cursor;
1006
1007     return true;
1008 }
1009
1010 wxFont& wxWindowBase::DoGetFont() const
1011 {
1012     // logic is the same as in GetBackgroundColour()
1013     if ( !m_font.Ok() )
1014     {
1015         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1016
1017         wxFont font = GetDefaultAttributes().font;
1018         if ( !font.Ok() )
1019             font = GetClassDefaultAttributes().font;
1020
1021         wxConstCast(this, wxWindowBase)->m_font = font;
1022     }
1023
1024     // cast is here for non-const GetFont() convenience
1025     return wxConstCast(this, wxWindowBase)->m_font;
1026 }
1027
1028 bool wxWindowBase::SetFont(const wxFont& font)
1029 {
1030     if ( !font.Ok() )
1031         return false;
1032
1033     if ( font == m_font )
1034     {
1035         // no change
1036         return false;
1037     }
1038
1039     m_font = font;
1040
1041     m_hasFont = true;
1042
1043     return true;
1044 }
1045
1046 #if wxUSE_PALETTE
1047
1048 void wxWindowBase::SetPalette(const wxPalette& pal)
1049 {
1050     m_hasCustomPalette = true;
1051     m_palette = pal;
1052
1053     // VZ: can anyone explain me what do we do here?
1054     wxWindowDC d((wxWindow *) this);
1055     d.SetPalette(pal);
1056 }
1057
1058 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1059 {
1060     wxWindow *win = (wxWindow *)this;
1061     while ( win && !win->HasCustomPalette() )
1062     {
1063         win = win->GetParent();
1064     }
1065
1066     return win;
1067 }
1068
1069 #endif // wxUSE_PALETTE
1070
1071 #if wxUSE_CARET
1072 void wxWindowBase::SetCaret(wxCaret *caret)
1073 {
1074     if ( m_caret )
1075     {
1076         delete m_caret;
1077     }
1078
1079     m_caret = caret;
1080
1081     if ( m_caret )
1082     {
1083         wxASSERT_MSG( m_caret->GetWindow() == this,
1084                       wxT("caret should be created associated to this window") );
1085     }
1086 }
1087 #endif // wxUSE_CARET
1088
1089 #if wxUSE_VALIDATORS
1090 // ----------------------------------------------------------------------------
1091 // validators
1092 // ----------------------------------------------------------------------------
1093
1094 void wxWindowBase::SetValidator(const wxValidator& validator)
1095 {
1096     if ( m_windowValidator )
1097         delete m_windowValidator;
1098
1099     m_windowValidator = (wxValidator *)validator.Clone();
1100
1101     if ( m_windowValidator )
1102         m_windowValidator->SetWindow(this);
1103 }
1104 #endif // wxUSE_VALIDATORS
1105
1106 // ----------------------------------------------------------------------------
1107 // update region stuff
1108 // ----------------------------------------------------------------------------
1109
1110 wxRect wxWindowBase::GetUpdateClientRect() const
1111 {
1112     wxRegion rgnUpdate = GetUpdateRegion();
1113     rgnUpdate.Intersect(GetClientRect());
1114     wxRect rectUpdate = rgnUpdate.GetBox();
1115     wxPoint ptOrigin = GetClientAreaOrigin();
1116     rectUpdate.x -= ptOrigin.x;
1117     rectUpdate.y -= ptOrigin.y;
1118
1119     return rectUpdate;
1120 }
1121
1122 bool wxWindowBase::IsExposed(int x, int y) const
1123 {
1124     return m_updateRegion.Contains(x, y) != wxOutRegion;
1125 }
1126
1127 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1128 {
1129     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1130 }
1131
1132 void wxWindowBase::ClearBackground()
1133 {
1134     // wxGTK uses its own version, no need to add never used code
1135 #ifndef __WXGTK__
1136     wxClientDC dc((wxWindow *)this);
1137     wxBrush brush(GetBackgroundColour(), wxSOLID);
1138     dc.SetBackground(brush);
1139     dc.Clear();
1140 #endif // __WXGTK__
1141 }
1142
1143 // ----------------------------------------------------------------------------
1144 // find child window by id or name
1145 // ----------------------------------------------------------------------------
1146
1147 wxWindow *wxWindowBase::FindWindow( long id )
1148 {
1149     if ( id == m_windowId )
1150         return (wxWindow *)this;
1151
1152     wxWindowBase *res = (wxWindow *)NULL;
1153     wxWindowList::compatibility_iterator node;
1154     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1155     {
1156         wxWindowBase *child = node->GetData();
1157         res = child->FindWindow( id );
1158     }
1159
1160     return (wxWindow *)res;
1161 }
1162
1163 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1164 {
1165     if ( name == m_windowName )
1166         return (wxWindow *)this;
1167
1168     wxWindowBase *res = (wxWindow *)NULL;
1169     wxWindowList::compatibility_iterator node;
1170     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1171     {
1172         wxWindow *child = node->GetData();
1173         res = child->FindWindow(name);
1174     }
1175
1176     return (wxWindow *)res;
1177 }
1178
1179
1180 // find any window by id or name or label: If parent is non-NULL, look through
1181 // children for a label or title matching the specified string. If NULL, look
1182 // through all top-level windows.
1183 //
1184 // to avoid duplicating code we reuse the same helper function but with
1185 // different comparators
1186
1187 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1188                                 const wxString& label, long id);
1189
1190 static
1191 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1192                            long WXUNUSED(id))
1193 {
1194     return win->GetLabel() == label;
1195 }
1196
1197 static
1198 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1199                           long WXUNUSED(id))
1200 {
1201     return win->GetName() == label;
1202 }
1203
1204 static
1205 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1206                         long id)
1207 {
1208     return win->GetId() == id;
1209 }
1210
1211 // recursive helper for the FindWindowByXXX() functions
1212 static
1213 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1214                                   const wxString& label,
1215                                   long id,
1216                                   wxFindWindowCmp cmp)
1217 {
1218     if ( parent )
1219     {
1220         // see if this is the one we're looking for
1221         if ( (*cmp)(parent, label, id) )
1222             return (wxWindow *)parent;
1223
1224         // It wasn't, so check all its children
1225         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1226               node;
1227               node = node->GetNext() )
1228         {
1229             // recursively check each child
1230             wxWindow *win = (wxWindow *)node->GetData();
1231             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1232             if (retwin)
1233                 return retwin;
1234         }
1235     }
1236
1237     // Not found
1238     return NULL;
1239 }
1240
1241 // helper for FindWindowByXXX()
1242 static
1243 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1244                              const wxString& label,
1245                              long id,
1246                              wxFindWindowCmp cmp)
1247 {
1248     if ( parent )
1249     {
1250         // just check parent and all its children
1251         return wxFindWindowRecursively(parent, label, id, cmp);
1252     }
1253
1254     // start at very top of wx's windows
1255     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1256           node;
1257           node = node->GetNext() )
1258     {
1259         // recursively check each window & its children
1260         wxWindow *win = node->GetData();
1261         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1262         if (retwin)
1263             return retwin;
1264     }
1265
1266     return NULL;
1267 }
1268
1269 /* static */
1270 wxWindow *
1271 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1272 {
1273     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1274 }
1275
1276 /* static */
1277 wxWindow *
1278 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1279 {
1280     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1281
1282     if ( !win )
1283     {
1284         // fall back to the label
1285         win = FindWindowByLabel(title, parent);
1286     }
1287
1288     return win;
1289 }
1290
1291 /* static */
1292 wxWindow *
1293 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1294 {
1295     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1296 }
1297
1298 // ----------------------------------------------------------------------------
1299 // dialog oriented functions
1300 // ----------------------------------------------------------------------------
1301
1302 void wxWindowBase::MakeModal(bool modal)
1303 {
1304     // Disable all other windows
1305     if ( IsTopLevel() )
1306     {
1307         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1308         while (node)
1309         {
1310             wxWindow *win = node->GetData();
1311             if (win != this)
1312                 win->Enable(!modal);
1313
1314             node = node->GetNext();
1315         }
1316     }
1317 }
1318
1319 bool wxWindowBase::Validate()
1320 {
1321 #if wxUSE_VALIDATORS
1322     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1323
1324     wxWindowList::compatibility_iterator node;
1325     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1326     {
1327         wxWindowBase *child = node->GetData();
1328         wxValidator *validator = child->GetValidator();
1329         if ( validator && !validator->Validate((wxWindow *)this) )
1330         {
1331             return false;
1332         }
1333
1334         if ( recurse && !child->Validate() )
1335         {
1336             return false;
1337         }
1338     }
1339 #endif // wxUSE_VALIDATORS
1340
1341     return true;
1342 }
1343
1344 bool wxWindowBase::TransferDataToWindow()
1345 {
1346 #if wxUSE_VALIDATORS
1347     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1348
1349     wxWindowList::compatibility_iterator node;
1350     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1351     {
1352         wxWindowBase *child = node->GetData();
1353         wxValidator *validator = child->GetValidator();
1354         if ( validator && !validator->TransferToWindow() )
1355         {
1356             wxLogWarning(_("Could not transfer data to window"));
1357 #if wxUSE_LOG
1358             wxLog::FlushActive();
1359 #endif // wxUSE_LOG
1360
1361             return false;
1362         }
1363
1364         if ( recurse )
1365         {
1366             if ( !child->TransferDataToWindow() )
1367             {
1368                 // warning already given
1369                 return false;
1370             }
1371         }
1372     }
1373 #endif // wxUSE_VALIDATORS
1374
1375     return true;
1376 }
1377
1378 bool wxWindowBase::TransferDataFromWindow()
1379 {
1380 #if wxUSE_VALIDATORS
1381     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1382
1383     wxWindowList::compatibility_iterator node;
1384     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1385     {
1386         wxWindow *child = node->GetData();
1387         wxValidator *validator = child->GetValidator();
1388         if ( validator && !validator->TransferFromWindow() )
1389         {
1390             // nop warning here because the application is supposed to give
1391             // one itself - we don't know here what might have gone wrongly
1392
1393             return false;
1394         }
1395
1396         if ( recurse )
1397         {
1398             if ( !child->TransferDataFromWindow() )
1399             {
1400                 // warning already given
1401                 return false;
1402             }
1403         }
1404     }
1405 #endif // wxUSE_VALIDATORS
1406
1407     return true;
1408 }
1409
1410 void wxWindowBase::InitDialog()
1411 {
1412     wxInitDialogEvent event(GetId());
1413     event.SetEventObject( this );
1414     GetEventHandler()->ProcessEvent(event);
1415 }
1416
1417 // ----------------------------------------------------------------------------
1418 // context-sensitive help support
1419 // ----------------------------------------------------------------------------
1420
1421 #if wxUSE_HELP
1422
1423 // associate this help text with this window
1424 void wxWindowBase::SetHelpText(const wxString& text)
1425 {
1426     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1427     if ( helpProvider )
1428     {
1429         helpProvider->AddHelp(this, text);
1430     }
1431 }
1432
1433 // associate this help text with all windows with the same id as this
1434 // one
1435 void wxWindowBase::SetHelpTextForId(const wxString& text)
1436 {
1437     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1438     if ( helpProvider )
1439     {
1440         helpProvider->AddHelp(GetId(), text);
1441     }
1442 }
1443
1444 // get the help string associated with this window (may be empty)
1445 wxString wxWindowBase::GetHelpText() const
1446 {
1447     wxString text;
1448     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1449     if ( helpProvider )
1450     {
1451         text = helpProvider->GetHelp(this);
1452     }
1453
1454     return text;
1455 }
1456
1457 // show help for this window
1458 void wxWindowBase::OnHelp(wxHelpEvent& event)
1459 {
1460     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1461     if ( helpProvider )
1462     {
1463         if ( helpProvider->ShowHelp(this) )
1464         {
1465             // skip the event.Skip() below
1466             return;
1467         }
1468     }
1469
1470     event.Skip();
1471 }
1472
1473 #endif // wxUSE_HELP
1474
1475 // ----------------------------------------------------------------------------
1476 // tooltipsroot.Replace("\\", "/");
1477 // ----------------------------------------------------------------------------
1478
1479 #if wxUSE_TOOLTIPS
1480
1481 void wxWindowBase::SetToolTip( const wxString &tip )
1482 {
1483     // don't create the new tooltip if we already have one
1484     if ( m_tooltip )
1485     {
1486         m_tooltip->SetTip( tip );
1487     }
1488     else
1489     {
1490         SetToolTip( new wxToolTip( tip ) );
1491     }
1492
1493     // setting empty tooltip text does not remove the tooltip any more - use
1494     // SetToolTip((wxToolTip *)NULL) for this
1495 }
1496
1497 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1498 {
1499     if ( m_tooltip )
1500         delete m_tooltip;
1501
1502     m_tooltip = tooltip;
1503 }
1504
1505 #endif // wxUSE_TOOLTIPS
1506
1507 // ----------------------------------------------------------------------------
1508 // constraints and sizers
1509 // ----------------------------------------------------------------------------
1510
1511 #if wxUSE_CONSTRAINTS
1512
1513 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1514 {
1515     if ( m_constraints )
1516     {
1517         UnsetConstraints(m_constraints);
1518         delete m_constraints;
1519     }
1520     m_constraints = constraints;
1521     if ( m_constraints )
1522     {
1523         // Make sure other windows know they're part of a 'meaningful relationship'
1524         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1525             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1526         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1527             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1528         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1529             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1530         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1531             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1532         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1533             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1534         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1535             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1536         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1537             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1538         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1539             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1540     }
1541 }
1542
1543 // This removes any dangling pointers to this window in other windows'
1544 // constraintsInvolvedIn lists.
1545 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1546 {
1547     if ( c )
1548     {
1549         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1550             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1551         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1552             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1553         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1554             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1555         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1556             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1557         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1558             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1559         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1560             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1561         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1562             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1563         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1564             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1565     }
1566 }
1567
1568 // Back-pointer to other windows we're involved with, so if we delete this
1569 // window, we must delete any constraints we're involved with.
1570 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1571 {
1572     if ( !m_constraintsInvolvedIn )
1573         m_constraintsInvolvedIn = new wxWindowList;
1574     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1575         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1576 }
1577
1578 // REMOVE back-pointer to other windows we're involved with.
1579 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1580 {
1581     if ( m_constraintsInvolvedIn )
1582         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1583 }
1584
1585 // Reset any constraints that mention this window
1586 void wxWindowBase::DeleteRelatedConstraints()
1587 {
1588     if ( m_constraintsInvolvedIn )
1589     {
1590         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1591         while (node)
1592         {
1593             wxWindow *win = node->GetData();
1594             wxLayoutConstraints *constr = win->GetConstraints();
1595
1596             // Reset any constraints involving this window
1597             if ( constr )
1598             {
1599                 constr->left.ResetIfWin(this);
1600                 constr->top.ResetIfWin(this);
1601                 constr->right.ResetIfWin(this);
1602                 constr->bottom.ResetIfWin(this);
1603                 constr->width.ResetIfWin(this);
1604                 constr->height.ResetIfWin(this);
1605                 constr->centreX.ResetIfWin(this);
1606                 constr->centreY.ResetIfWin(this);
1607             }
1608
1609             wxWindowList::compatibility_iterator next = node->GetNext();
1610             m_constraintsInvolvedIn->Erase(node);
1611             node = next;
1612         }
1613
1614         delete m_constraintsInvolvedIn;
1615         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1616     }
1617 }
1618
1619 #endif // wxUSE_CONSTRAINTS
1620
1621 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1622 {
1623     if ( sizer == m_windowSizer)
1624         return;
1625
1626     if ( deleteOld )
1627         delete m_windowSizer;
1628
1629     m_windowSizer = sizer;
1630
1631     SetAutoLayout( sizer != NULL );
1632 }
1633
1634 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1635 {
1636     SetSizer( sizer, deleteOld );
1637     sizer->SetSizeHints( (wxWindow*) this );
1638 }
1639
1640 #if wxUSE_CONSTRAINTS
1641
1642 void wxWindowBase::SatisfyConstraints()
1643 {
1644     wxLayoutConstraints *constr = GetConstraints();
1645     bool wasOk = constr && constr->AreSatisfied();
1646
1647     ResetConstraints();   // Mark all constraints as unevaluated
1648
1649     int noChanges = 1;
1650
1651     // if we're a top level panel (i.e. our parent is frame/dialog), our
1652     // own constraints will never be satisfied any more unless we do it
1653     // here
1654     if ( wasOk )
1655     {
1656         while ( noChanges > 0 )
1657         {
1658             LayoutPhase1(&noChanges);
1659         }
1660     }
1661
1662     LayoutPhase2(&noChanges);
1663 }
1664
1665 #endif // wxUSE_CONSTRAINTS
1666
1667 bool wxWindowBase::Layout()
1668 {
1669     // If there is a sizer, use it instead of the constraints
1670     if ( GetSizer() )
1671     {
1672         int w, h;
1673         GetVirtualSize(&w, &h);
1674         GetSizer()->SetDimension( 0, 0, w, h );
1675     }
1676 #if wxUSE_CONSTRAINTS
1677     else
1678     {
1679         SatisfyConstraints(); // Find the right constraints values
1680         SetConstraintSizes(); // Recursively set the real window sizes
1681     }
1682 #endif
1683
1684     return true;
1685 }
1686
1687 #if wxUSE_CONSTRAINTS
1688
1689 // first phase of the constraints evaluation: set our own constraints
1690 bool wxWindowBase::LayoutPhase1(int *noChanges)
1691 {
1692     wxLayoutConstraints *constr = GetConstraints();
1693
1694     return !constr || constr->SatisfyConstraints(this, noChanges);
1695 }
1696
1697 // second phase: set the constraints for our children
1698 bool wxWindowBase::LayoutPhase2(int *noChanges)
1699 {
1700     *noChanges = 0;
1701
1702     // Layout children
1703     DoPhase(1);
1704
1705     // Layout grand children
1706     DoPhase(2);
1707
1708     return true;
1709 }
1710
1711 // Do a phase of evaluating child constraints
1712 bool wxWindowBase::DoPhase(int phase)
1713 {
1714     // the list containing the children for which the constraints are already
1715     // set correctly
1716     wxWindowList succeeded;
1717
1718     // the max number of iterations we loop before concluding that we can't set
1719     // the constraints
1720     static const int maxIterations = 500;
1721
1722     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1723     {
1724         int noChanges = 0;
1725
1726         // loop over all children setting their constraints
1727         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1728               node;
1729               node = node->GetNext() )
1730         {
1731             wxWindow *child = node->GetData();
1732             if ( child->IsTopLevel() )
1733             {
1734                 // top level children are not inside our client area
1735                 continue;
1736             }
1737
1738             if ( !child->GetConstraints() || succeeded.Find(child) )
1739             {
1740                 // this one is either already ok or nothing we can do about it
1741                 continue;
1742             }
1743
1744             int tempNoChanges = 0;
1745             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1746                                       : child->LayoutPhase2(&tempNoChanges);
1747             noChanges += tempNoChanges;
1748
1749             if ( success )
1750             {
1751                 succeeded.Append(child);
1752             }
1753         }
1754
1755         if ( !noChanges )
1756         {
1757             // constraints are set
1758             break;
1759         }
1760     }
1761
1762     return true;
1763 }
1764
1765 void wxWindowBase::ResetConstraints()
1766 {
1767     wxLayoutConstraints *constr = GetConstraints();
1768     if ( constr )
1769     {
1770         constr->left.SetDone(false);
1771         constr->top.SetDone(false);
1772         constr->right.SetDone(false);
1773         constr->bottom.SetDone(false);
1774         constr->width.SetDone(false);
1775         constr->height.SetDone(false);
1776         constr->centreX.SetDone(false);
1777         constr->centreY.SetDone(false);
1778     }
1779
1780     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1781     while (node)
1782     {
1783         wxWindow *win = node->GetData();
1784         if ( !win->IsTopLevel() )
1785             win->ResetConstraints();
1786         node = node->GetNext();
1787     }
1788 }
1789
1790 // Need to distinguish between setting the 'fake' size for windows and sizers,
1791 // and setting the real values.
1792 void wxWindowBase::SetConstraintSizes(bool recurse)
1793 {
1794     wxLayoutConstraints *constr = GetConstraints();
1795     if ( constr && constr->AreSatisfied() )
1796     {
1797         int x = constr->left.GetValue();
1798         int y = constr->top.GetValue();
1799         int w = constr->width.GetValue();
1800         int h = constr->height.GetValue();
1801
1802         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1803              (constr->height.GetRelationship() != wxAsIs) )
1804         {
1805             SetSize(x, y, w, h);
1806         }
1807         else
1808         {
1809             // If we don't want to resize this window, just move it...
1810             Move(x, y);
1811         }
1812     }
1813     else if ( constr )
1814     {
1815         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1816                    GetClassInfo()->GetClassName(),
1817                    GetName().c_str());
1818     }
1819
1820     if ( recurse )
1821     {
1822         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1823         while (node)
1824         {
1825             wxWindow *win = node->GetData();
1826             if ( !win->IsTopLevel() && win->GetConstraints() )
1827                 win->SetConstraintSizes();
1828             node = node->GetNext();
1829         }
1830     }
1831 }
1832
1833 // Only set the size/position of the constraint (if any)
1834 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1835 {
1836     wxLayoutConstraints *constr = GetConstraints();
1837     if ( constr )
1838     {
1839         if ( x != -1 )
1840         {
1841             constr->left.SetValue(x);
1842             constr->left.SetDone(true);
1843         }
1844         if ( y != -1 )
1845         {
1846             constr->top.SetValue(y);
1847             constr->top.SetDone(true);
1848         }
1849         if ( w != -1 )
1850         {
1851             constr->width.SetValue(w);
1852             constr->width.SetDone(true);
1853         }
1854         if ( h != -1 )
1855         {
1856             constr->height.SetValue(h);
1857             constr->height.SetDone(true);
1858         }
1859     }
1860 }
1861
1862 void wxWindowBase::MoveConstraint(int x, int y)
1863 {
1864     wxLayoutConstraints *constr = GetConstraints();
1865     if ( constr )
1866     {
1867         if ( x != -1 )
1868         {
1869             constr->left.SetValue(x);
1870             constr->left.SetDone(true);
1871         }
1872         if ( y != -1 )
1873         {
1874             constr->top.SetValue(y);
1875             constr->top.SetDone(true);
1876         }
1877     }
1878 }
1879
1880 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1881 {
1882     wxLayoutConstraints *constr = GetConstraints();
1883     if ( constr )
1884     {
1885         *w = constr->width.GetValue();
1886         *h = constr->height.GetValue();
1887     }
1888     else
1889         GetSize(w, h);
1890 }
1891
1892 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1893 {
1894     wxLayoutConstraints *constr = GetConstraints();
1895     if ( constr )
1896     {
1897         *w = constr->width.GetValue();
1898         *h = constr->height.GetValue();
1899     }
1900     else
1901         GetClientSize(w, h);
1902 }
1903
1904 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1905 {
1906     wxLayoutConstraints *constr = GetConstraints();
1907     if ( constr )
1908     {
1909         *x = constr->left.GetValue();
1910         *y = constr->top.GetValue();
1911     }
1912     else
1913         GetPosition(x, y);
1914 }
1915
1916 #endif // wxUSE_CONSTRAINTS
1917
1918 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1919 {
1920     // don't do it for the dialogs/frames - they float independently of their
1921     // parent
1922     if ( !IsTopLevel() )
1923     {
1924         wxWindow *parent = GetParent();
1925         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1926         {
1927             wxPoint pt(parent->GetClientAreaOrigin());
1928             x += pt.x;
1929             y += pt.y;
1930         }
1931     }
1932 }
1933
1934 // ----------------------------------------------------------------------------
1935 // do Update UI processing for child controls
1936 // ----------------------------------------------------------------------------
1937
1938 void wxWindowBase::UpdateWindowUI(long flags)
1939 {
1940     wxUpdateUIEvent event(GetId());
1941     event.m_eventObject = this;
1942
1943     if ( GetEventHandler()->ProcessEvent(event) )
1944     {
1945         DoUpdateWindowUI(event);
1946     }
1947
1948     if (flags & wxUPDATE_UI_RECURSE)
1949     {
1950         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1951         while (node)
1952         {
1953             wxWindow* child = (wxWindow*) node->GetData();
1954             child->UpdateWindowUI(flags);
1955             node = node->GetNext();
1956         }
1957     }
1958 }
1959
1960 // do the window-specific processing after processing the update event
1961 // TODO: take specific knowledge out of this function and
1962 // put in each control's base class. Unfortunately we don't
1963 // yet have base implementation files for wxCheckBox and wxRadioButton.
1964 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1965 {
1966     if ( event.GetSetEnabled() )
1967         Enable(event.GetEnabled());
1968
1969 #if wxUSE_CONTROLS
1970     if ( event.GetSetText() )
1971     {
1972         wxControl *control = wxDynamicCastThis(wxControl);
1973         if ( control )
1974         {
1975             if ( event.GetText() != control->GetLabel() )
1976                 control->SetLabel(event.GetText());
1977         }
1978 #if wxUSE_CHECKBOX
1979         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1980         if ( checkbox )
1981         {
1982             if ( event.GetSetChecked() )
1983                 checkbox->SetValue(event.GetChecked());
1984         }
1985 #endif // wxUSE_CHECKBOX
1986
1987 #if wxUSE_RADIOBTN
1988         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1989         if ( radiobtn )
1990         {
1991             if ( event.GetSetChecked() )
1992                 radiobtn->SetValue(event.GetChecked());
1993         }
1994 #endif // wxUSE_RADIOBTN
1995     }
1996 #endif
1997 }
1998
1999 #if 0
2000 // call internal idle recursively
2001 // may be obsolete (wait until OnIdle scheme stabilises)
2002 void wxWindowBase::ProcessInternalIdle()
2003 {
2004     OnInternalIdle();
2005
2006     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2007     while (node)
2008     {
2009         wxWindow *child = node->GetData();
2010         child->ProcessInternalIdle();
2011         node = node->GetNext();
2012     }
2013 }
2014 #endif
2015
2016 // ----------------------------------------------------------------------------
2017 // dialog units translations
2018 // ----------------------------------------------------------------------------
2019
2020 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2021 {
2022     int charWidth = GetCharWidth();
2023     int charHeight = GetCharHeight();
2024     wxPoint pt2(-1, -1);
2025     if (pt.x != -1)
2026         pt2.x = (int) ((pt.x * 4) / charWidth);
2027     if (pt.y != -1)
2028         pt2.y = (int) ((pt.y * 8) / charHeight);
2029
2030     return pt2;
2031 }
2032
2033 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2034 {
2035     int charWidth = GetCharWidth();
2036     int charHeight = GetCharHeight();
2037     wxPoint pt2(-1, -1);
2038     if (pt.x != -1)
2039         pt2.x = (int) ((pt.x * charWidth) / 4);
2040     if (pt.y != -1)
2041         pt2.y = (int) ((pt.y * charHeight) / 8);
2042
2043     return pt2;
2044 }
2045
2046 // ----------------------------------------------------------------------------
2047 // event handlers
2048 // ----------------------------------------------------------------------------
2049
2050 // propagate the colour change event to the subwindows
2051 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2052 {
2053     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2054     while ( node )
2055     {
2056         // Only propagate to non-top-level windows
2057         wxWindow *win = node->GetData();
2058         if ( !win->IsTopLevel() )
2059         {
2060             wxSysColourChangedEvent event2;
2061             event.m_eventObject = win;
2062             win->GetEventHandler()->ProcessEvent(event2);
2063         }
2064
2065         node = node->GetNext();
2066     }
2067 }
2068
2069 // the default action is to populate dialog with data when it's created,
2070 // and nudge the UI into displaying itself correctly in case
2071 // we've turned the wxUpdateUIEvents frequency down low.
2072 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2073 {
2074     TransferDataToWindow();
2075
2076     // Update the UI at this point
2077     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2078 }
2079
2080 // process Ctrl-Alt-mclick
2081 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2082 {
2083 #if wxUSE_MSGDLG
2084     if ( event.ControlDown() && event.AltDown() )
2085     {
2086         // don't translate these strings
2087         wxString port;
2088
2089 #ifdef __WXUNIVERSAL__
2090         port = _T("Univ/");
2091 #endif // __WXUNIVERSAL__
2092
2093         switch ( wxGetOsVersion() )
2094         {
2095             case wxMOTIF_X:     port += _T("Motif"); break;
2096             case wxMAC:
2097             case wxMAC_DARWIN:  port += _T("Mac"); break;
2098             case wxBEOS:        port += _T("BeOS"); break;
2099             case wxGTK:
2100             case wxGTK_WIN32:
2101             case wxGTK_OS2:
2102             case wxGTK_BEOS:    port += _T("GTK"); break;
2103             case wxWINDOWS:
2104             case wxPENWINDOWS:
2105             case wxWINDOWS_NT:
2106             case wxWIN32S:
2107             case wxWIN95:
2108             case wxWIN386:      port += _T("MS Windows"); break;
2109             case wxMGL_UNIX:
2110             case wxMGL_X:
2111             case wxMGL_WIN32:
2112             case wxMGL_OS2:     port += _T("MGL"); break;
2113             case wxWINDOWS_OS2:
2114             case wxOS2_PM:      port += _T("OS/2"); break;
2115             default:            port += _T("unknown"); break;
2116         }
2117
2118         wxMessageBox(wxString::Format(
2119                                       _T(
2120                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
2121                                         ),
2122                                       port.c_str(),
2123                                       wxMAJOR_VERSION,
2124                                       wxMINOR_VERSION,
2125                                       wxRELEASE_NUMBER,
2126 #if wxUSE_UNICODE
2127                                       L" (Unicode)",
2128 #else
2129                                       "",
2130 #endif
2131                                       __TDATE__,
2132                                       __TTIME__
2133                                      ),
2134                      _T("wxWindows information"),
2135                      wxICON_INFORMATION | wxOK,
2136                      (wxWindow *)this);
2137     }
2138     else
2139 #endif // wxUSE_MSGDLG
2140     {
2141         event.Skip();
2142     }
2143 }
2144
2145 // ----------------------------------------------------------------------------
2146 // accessibility
2147 // ----------------------------------------------------------------------------
2148
2149 #if wxUSE_ACCESSIBILITY
2150 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2151 {
2152     if (m_accessible && (accessible != m_accessible))
2153         delete m_accessible;
2154     m_accessible = accessible;
2155     if (m_accessible)
2156         m_accessible->SetWindow((wxWindow*) this);
2157 }
2158
2159 // Returns the accessible object, creating if necessary.
2160 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2161 {
2162     if (!m_accessible)
2163         m_accessible = CreateAccessible();
2164     return m_accessible;
2165 }
2166
2167 // Override to create a specific accessible object.
2168 wxAccessible* wxWindowBase::CreateAccessible()
2169 {
2170     return new wxWindowAccessible((wxWindow*) this);
2171 }
2172
2173 #endif
2174
2175 #if !wxUSE_STL
2176 // ----------------------------------------------------------------------------
2177 // list classes implementation
2178 // ----------------------------------------------------------------------------
2179
2180 void wxWindowListNode::DeleteData()
2181 {
2182     delete (wxWindow *)GetData();
2183 }
2184 #endif
2185
2186 // ----------------------------------------------------------------------------
2187 // borders
2188 // ----------------------------------------------------------------------------
2189
2190 wxBorder wxWindowBase::GetBorder(long flags) const
2191 {
2192     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2193     if ( border == wxBORDER_DEFAULT )
2194     {
2195         border = GetDefaultBorder();
2196     }
2197
2198     return border;
2199 }
2200
2201 wxBorder wxWindowBase::GetDefaultBorder() const
2202 {
2203     return wxBORDER_NONE;
2204 }
2205
2206 // ----------------------------------------------------------------------------
2207 // hit testing
2208 // ----------------------------------------------------------------------------
2209
2210 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2211 {
2212     // here we just check if the point is inside the window or not
2213
2214     // check the top and left border first
2215     bool outside = x < 0 || y < 0;
2216     if ( !outside )
2217     {
2218         // check the right and bottom borders too
2219         wxSize size = GetSize();
2220         outside = x >= size.x || y >= size.y;
2221     }
2222
2223     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2224 }
2225
2226 // ----------------------------------------------------------------------------
2227 // mouse capture
2228 // ----------------------------------------------------------------------------
2229
2230 struct WXDLLEXPORT wxWindowNext
2231 {
2232     wxWindow *win;
2233     wxWindowNext *next;
2234 } *wxWindowBase::ms_winCaptureNext = NULL;
2235
2236 void wxWindowBase::CaptureMouse()
2237 {
2238     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2239
2240     wxWindow *winOld = GetCapture();
2241     if ( winOld )
2242     {
2243         ((wxWindowBase*) winOld)->DoReleaseMouse();
2244
2245         // save it on stack
2246         wxWindowNext *item = new wxWindowNext;
2247         item->win = winOld;
2248         item->next = ms_winCaptureNext;
2249         ms_winCaptureNext = item;
2250     }
2251     //else: no mouse capture to save
2252
2253     DoCaptureMouse();
2254 }
2255
2256 void wxWindowBase::ReleaseMouse()
2257 {
2258     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2259
2260     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2261
2262     DoReleaseMouse();
2263
2264     if ( ms_winCaptureNext )
2265     {
2266         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2267
2268         wxWindowNext *item = ms_winCaptureNext;
2269         ms_winCaptureNext = item->next;
2270         delete item;
2271     }
2272     //else: stack is empty, no previous capture
2273
2274     wxLogTrace(_T("mousecapture"),
2275         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2276         GetCapture());
2277 }
2278
2279 #if wxUSE_HOTKEY
2280
2281 bool
2282 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2283                              int WXUNUSED(modifiers),
2284                              int WXUNUSED(keycode))
2285 {
2286     // not implemented
2287     return false;
2288 }
2289
2290 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2291 {
2292     // not implemented
2293     return false;
2294 }
2295
2296 #endif // wxUSE_HOTKEY
2297
2298 void wxWindowBase::SendDestroyEvent()
2299 {
2300     wxWindowDestroyEvent event;
2301     event.SetEventObject(this);
2302     event.SetId(GetId());
2303     GetEventHandler()->ProcessEvent(event);
2304 }
2305
2306 // ----------------------------------------------------------------------------
2307 // event processing
2308 // ----------------------------------------------------------------------------
2309
2310 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2311 {
2312 #if wxUSE_VALIDATORS
2313     // Can only use the validator of the window which
2314     // is receiving the event
2315     if ( event.GetEventObject() == this )
2316     {
2317         wxValidator *validator = GetValidator();
2318         if ( validator && validator->ProcessEvent(event) )
2319         {
2320             return true;
2321         }
2322     }
2323 #endif // wxUSE_VALIDATORS
2324
2325     return false;
2326 }
2327
2328 bool wxWindowBase::TryParent(wxEvent& event)
2329 {
2330     // carry on up the parent-child hierarchy if the propgation count hasn't
2331     // reached zero yet
2332     if ( event.ShouldPropagate() )
2333     {
2334         // honour the requests to stop propagation at this window: this is
2335         // used by the dialogs, for example, to prevent processing the events
2336         // from the dialog controls in the parent frame which rarely, if ever,
2337         // makes sense
2338         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2339         {
2340             wxWindow *parent = GetParent();
2341             if ( parent && !parent->IsBeingDeleted() )
2342             {
2343                 wxPropagateOnce propagateOnce(event);
2344
2345                 return parent->GetEventHandler()->ProcessEvent(event);
2346             }
2347         }
2348     }
2349
2350     return wxEvtHandler::TryParent(event);
2351 }
2352
2353 // ----------------------------------------------------------------------------
2354 // global functions
2355 // ----------------------------------------------------------------------------
2356
2357 wxWindow* wxGetTopLevelParent(wxWindow *win)
2358 {
2359     while ( win && !win->IsTopLevel() )
2360          win = win->GetParent();
2361
2362     return win;
2363 }
2364
2365 #if wxUSE_ACCESSIBILITY
2366 // ----------------------------------------------------------------------------
2367 // accessible object for windows
2368 // ----------------------------------------------------------------------------
2369
2370 // Can return either a child object, or an integer
2371 // representing the child element, starting from 1.
2372 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2373 {
2374     wxASSERT( GetWindow() != NULL );
2375     if (!GetWindow())
2376         return wxACC_FAIL;
2377
2378     return wxACC_NOT_IMPLEMENTED;
2379 }
2380
2381 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2382 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2383 {
2384     wxASSERT( GetWindow() != NULL );
2385     if (!GetWindow())
2386         return wxACC_FAIL;
2387
2388     wxWindow* win = NULL;
2389     if (elementId == 0)
2390     {
2391         win = GetWindow();
2392     }
2393     else
2394     {
2395         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2396         {
2397             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2398         }
2399         else
2400             return wxACC_FAIL;
2401     }
2402     if (win)
2403     {
2404         rect = win->GetRect();
2405         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2406             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2407         return wxACC_OK;
2408     }
2409
2410     return wxACC_NOT_IMPLEMENTED;
2411 }
2412
2413 // Navigates from fromId to toId/toObject.
2414 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2415                              int* WXUNUSED(toId), wxAccessible** toObject)
2416 {
2417     wxASSERT( GetWindow() != NULL );
2418     if (!GetWindow())
2419         return wxACC_FAIL;
2420
2421     switch (navDir)
2422     {
2423     case wxNAVDIR_FIRSTCHILD:
2424         {
2425             if (GetWindow()->GetChildren().GetCount() == 0)
2426                 return wxACC_FALSE;
2427             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2428             *toObject = childWindow->GetOrCreateAccessible();
2429
2430             return wxACC_OK;
2431         }
2432     case wxNAVDIR_LASTCHILD:
2433         {
2434             if (GetWindow()->GetChildren().GetCount() == 0)
2435                 return wxACC_FALSE;
2436             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2437             *toObject = childWindow->GetOrCreateAccessible();
2438
2439             return wxACC_OK;
2440         }
2441     case wxNAVDIR_RIGHT:
2442     case wxNAVDIR_DOWN:
2443     case wxNAVDIR_NEXT:
2444         {
2445             wxWindowList::compatibility_iterator node =
2446                 wxWindowList::compatibility_iterator();
2447             if (fromId == 0)
2448             {
2449                 // Can't navigate to sibling of this window
2450                 // if we're a top-level window.
2451                 if (!GetWindow()->GetParent())
2452                     return wxACC_NOT_IMPLEMENTED;
2453
2454                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2455             }
2456             else
2457             {
2458                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2459                     node = GetWindow()->GetChildren().Item(fromId-1);
2460             }
2461
2462             if (node && node->GetNext())
2463             {
2464                 wxWindow* nextWindow = node->GetNext()->GetData();
2465                 *toObject = nextWindow->GetOrCreateAccessible();
2466                 return wxACC_OK;
2467             }
2468             else
2469                 return wxACC_FALSE;
2470         }
2471     case wxNAVDIR_LEFT:
2472     case wxNAVDIR_UP:
2473     case wxNAVDIR_PREVIOUS:
2474         {
2475             wxWindowList::compatibility_iterator node =
2476                 wxWindowList::compatibility_iterator();
2477             if (fromId == 0)
2478             {
2479                 // Can't navigate to sibling of this window
2480                 // if we're a top-level window.
2481                 if (!GetWindow()->GetParent())
2482                     return wxACC_NOT_IMPLEMENTED;
2483
2484                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2485             }
2486             else
2487             {
2488                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2489                     node = GetWindow()->GetChildren().Item(fromId-1);
2490             }
2491
2492             if (node && node->GetPrevious())
2493             {
2494                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2495                 *toObject = previousWindow->GetOrCreateAccessible();
2496                 return wxACC_OK;
2497             }
2498             else
2499                 return wxACC_FALSE;
2500         }
2501     }
2502
2503     return wxACC_NOT_IMPLEMENTED;
2504 }
2505
2506 // Gets the name of the specified object.
2507 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2508 {
2509     wxASSERT( GetWindow() != NULL );
2510     if (!GetWindow())
2511         return wxACC_FAIL;
2512
2513     wxString title;
2514
2515     // If a child, leave wxWindows to call the function on the actual
2516     // child object.
2517     if (childId > 0)
2518         return wxACC_NOT_IMPLEMENTED;
2519
2520     // This will eventually be replaced by specialised
2521     // accessible classes, one for each kind of wxWindows
2522     // control or window.
2523     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2524         title = ((wxButton*) GetWindow())->GetLabel();
2525     else
2526         title = GetWindow()->GetName();
2527
2528     if (!title.IsEmpty())
2529     {
2530         *name = title;
2531         return wxACC_OK;
2532     }
2533     else
2534         return wxACC_NOT_IMPLEMENTED;
2535 }
2536
2537 // Gets the number of children.
2538 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2539 {
2540     wxASSERT( GetWindow() != NULL );
2541     if (!GetWindow())
2542         return wxACC_FAIL;
2543
2544     *childId = (int) GetWindow()->GetChildren().GetCount();
2545     return wxACC_OK;
2546 }
2547
2548 // Gets the specified child (starting from 1).
2549 // If *child is NULL and return value is wxACC_OK,
2550 // this means that the child is a simple element and
2551 // not an accessible object.
2552 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2553 {
2554     wxASSERT( GetWindow() != NULL );
2555     if (!GetWindow())
2556         return wxACC_FAIL;
2557
2558     if (childId == 0)
2559     {
2560         *child = this;
2561         return wxACC_OK;
2562     }
2563
2564     if (childId > (int) GetWindow()->GetChildren().GetCount())
2565         return wxACC_FAIL;
2566
2567     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2568     *child = childWindow->GetOrCreateAccessible();
2569     if (*child)
2570         return wxACC_OK;
2571     else
2572         return wxACC_FAIL;
2573 }
2574
2575 // Gets the parent, or NULL.
2576 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2577 {
2578     wxASSERT( GetWindow() != NULL );
2579     if (!GetWindow())
2580         return wxACC_FAIL;
2581
2582     wxWindow* parentWindow = GetWindow()->GetParent();
2583     if (!parentWindow)
2584     {
2585         *parent = NULL;
2586         return wxACC_OK;
2587     }
2588     else
2589     {
2590         *parent = parentWindow->GetOrCreateAccessible();
2591         if (*parent)
2592             return wxACC_OK;
2593         else
2594             return wxACC_FAIL;
2595     }
2596 }
2597
2598 // Performs the default action. childId is 0 (the action for this object)
2599 // or > 0 (the action for a child).
2600 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2601 // window (e.g. an edit control).
2602 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2603 {
2604     wxASSERT( GetWindow() != NULL );
2605     if (!GetWindow())
2606         return wxACC_FAIL;
2607
2608     return wxACC_NOT_IMPLEMENTED;
2609 }
2610
2611 // Gets the default action for this object (0) or > 0 (the action for a child).
2612 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2613 // string if there is no action.
2614 // The retrieved string describes the action that is performed on an object,
2615 // not what the object does as a result. For example, a toolbar button that prints
2616 // a document has a default action of "Press" rather than "Prints the current document."
2617 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2618 {
2619     wxASSERT( GetWindow() != NULL );
2620     if (!GetWindow())
2621         return wxACC_FAIL;
2622
2623     return wxACC_NOT_IMPLEMENTED;
2624 }
2625
2626 // Returns the description for this object or a child.
2627 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2628 {
2629     wxASSERT( GetWindow() != NULL );
2630     if (!GetWindow())
2631         return wxACC_FAIL;
2632
2633     wxString ht(GetWindow()->GetHelpText());
2634     if (!ht.IsEmpty())
2635     {
2636         *description = ht;
2637         return wxACC_OK;
2638     }
2639     return wxACC_NOT_IMPLEMENTED;
2640 }
2641
2642 // Returns help text for this object or a child, similar to tooltip text.
2643 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2644 {
2645     wxASSERT( GetWindow() != NULL );
2646     if (!GetWindow())
2647         return wxACC_FAIL;
2648
2649     wxString ht(GetWindow()->GetHelpText());
2650     if (!ht.IsEmpty())
2651     {
2652         *helpText = ht;
2653         return wxACC_OK;
2654     }
2655     return wxACC_NOT_IMPLEMENTED;
2656 }
2657
2658 // Returns the keyboard shortcut for this object or child.
2659 // Return e.g. ALT+K
2660 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2661 {
2662     wxASSERT( GetWindow() != NULL );
2663     if (!GetWindow())
2664         return wxACC_FAIL;
2665
2666     return wxACC_NOT_IMPLEMENTED;
2667 }
2668
2669 // Returns a role constant.
2670 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2671 {
2672     wxASSERT( GetWindow() != NULL );
2673     if (!GetWindow())
2674         return wxACC_FAIL;
2675
2676     // If a child, leave wxWindows to call the function on the actual
2677     // child object.
2678     if (childId > 0)
2679         return wxACC_NOT_IMPLEMENTED;
2680
2681     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2682         return wxACC_NOT_IMPLEMENTED;
2683 #if wxUSE_STATUSBAR
2684     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2685         return wxACC_NOT_IMPLEMENTED;
2686 #endif
2687 #if wxUSE_TOOLBAR
2688     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2689         return wxACC_NOT_IMPLEMENTED;
2690 #endif
2691
2692     //*role = wxROLE_SYSTEM_CLIENT;
2693     *role = wxROLE_SYSTEM_CLIENT;
2694     return wxACC_OK;
2695
2696     #if 0
2697     return wxACC_NOT_IMPLEMENTED;
2698     #endif
2699 }
2700
2701 // Returns a state constant.
2702 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2703 {
2704     wxASSERT( GetWindow() != NULL );
2705     if (!GetWindow())
2706         return wxACC_FAIL;
2707
2708     // If a child, leave wxWindows to call the function on the actual
2709     // child object.
2710     if (childId > 0)
2711         return wxACC_NOT_IMPLEMENTED;
2712
2713     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2714         return wxACC_NOT_IMPLEMENTED;
2715
2716 #if wxUSE_STATUSBAR
2717     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2718         return wxACC_NOT_IMPLEMENTED;
2719 #endif
2720 #if wxUSE_TOOLBAR
2721     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2722         return wxACC_NOT_IMPLEMENTED;
2723 #endif
2724
2725     *state = 0;
2726     return wxACC_OK;
2727
2728     #if 0
2729     return wxACC_NOT_IMPLEMENTED;
2730     #endif
2731 }
2732
2733 // Returns a localized string representing the value for the object
2734 // or child.
2735 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2736 {
2737     wxASSERT( GetWindow() != NULL );
2738     if (!GetWindow())
2739         return wxACC_FAIL;
2740
2741     return wxACC_NOT_IMPLEMENTED;
2742 }
2743
2744 // Selects the object or child.
2745 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2746 {
2747     wxASSERT( GetWindow() != NULL );
2748     if (!GetWindow())
2749         return wxACC_FAIL;
2750
2751     return wxACC_NOT_IMPLEMENTED;
2752 }
2753
2754 // Gets the window with the keyboard focus.
2755 // If childId is 0 and child is NULL, no object in
2756 // this subhierarchy has the focus.
2757 // If this object has the focus, child should be 'this'.
2758 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2759 {
2760     wxASSERT( GetWindow() != NULL );
2761     if (!GetWindow())
2762         return wxACC_FAIL;
2763
2764     return wxACC_NOT_IMPLEMENTED;
2765 }
2766
2767 // Gets a variant representing the selected children
2768 // of this object.
2769 // Acceptable values:
2770 // - a null variant (IsNull() returns TRUE)
2771 // - a list variant (GetType() == wxT("list")
2772 // - an integer representing the selected child element,
2773 //   or 0 if this object is selected (GetType() == wxT("long")
2774 // - a "void*" pointer to a wxAccessible child object
2775 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2776 {
2777     wxASSERT( GetWindow() != NULL );
2778     if (!GetWindow())
2779         return wxACC_FAIL;
2780
2781     return wxACC_NOT_IMPLEMENTED;
2782 }
2783
2784 #endif // wxUSE_ACCESSIBILITY