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& WXUNUSED(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 #if wxUSE_VALIDATORS
 227     SetValidator(validator);
 228 #endif // wxUSE_VALIDATORS
 229
 230     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 231     // have it too - like this it's possible to set it only in the top level
 232     // dialog/frame and all children will inherit it by defult
 233     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 234     {
 235         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 236     }
 237
 238     return true;
 239 }
 240
 241 // ----------------------------------------------------------------------------
 242 // destruction
 243 // ----------------------------------------------------------------------------
 244
 245 // common clean up
 246 wxWindowBase::~wxWindowBase()
 247 {
 248     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 249
 250     // FIXME if these 2 cases result from programming errors in the user code
 251     //       we should probably assert here instead of silently fixing them
 252
 253     // Just in case the window has been Closed, but we're then deleting
 254     // immediately: don't leave dangling pointers.
 255     wxPendingDelete.DeleteObject(this);
 256
 257     // Just in case we've loaded a top-level window via LoadNativeDialog but
 258     // we weren't a dialog class
 259     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 260
 261     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 262
 263     // reset the dangling pointer our parent window may keep to us
 264     if ( m_parent )
 265     {
 266         if ( m_parent->GetDefaultItem() == this )
 267         {
 268             m_parent->SetDefaultItem(NULL);
 269         }
 270
 271         m_parent->RemoveChild(this);
 272     }
 273
 274 #if wxUSE_CARET
 275     delete m_caret;
 276 #endif // wxUSE_CARET
 277
 278 #if wxUSE_VALIDATORS
 279     delete m_windowValidator;
 280 #endif // wxUSE_VALIDATORS
 281
 282 #if wxUSE_CONSTRAINTS
 283     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 284     // at deleted windows as they delete themselves.
 285     DeleteRelatedConstraints();
 286
 287     if ( m_constraints )
 288     {
 289         // This removes any dangling pointers to this window in other windows'
 290         // constraintsInvolvedIn lists.
 291         UnsetConstraints(m_constraints);
 292         delete m_constraints;
 293         m_constraints = NULL;
 294     }
 295 #endif // wxUSE_CONSTRAINTS
 296
 297     if ( m_containingSizer )
 298         m_containingSizer->Detach( (wxWindow*)this );
 299
 300     delete m_windowSizer;
 301
 302 #if wxUSE_DRAG_AND_DROP
 303     delete m_dropTarget;
 304 #endif // wxUSE_DRAG_AND_DROP
 305
 306 #if wxUSE_TOOLTIPS
 307     delete m_tooltip;
 308 #endif // wxUSE_TOOLTIPS
 309
 310 #if wxUSE_ACCESSIBILITY
 311     delete m_accessible;
 312 #endif
 313 }
 314
 315 bool wxWindowBase::Destroy()
 316 {
 317     delete this;
 318
 319     return true;
 320 }
 321
 322 bool wxWindowBase::Close(bool force)
 323 {
 324     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 325     event.SetEventObject(this);
 326     event.SetCanVeto(!force);
 327
 328     // return false if window wasn't closed because the application vetoed the
 329     // close event
 330     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 331 }
 332
 333 bool wxWindowBase::DestroyChildren()
 334 {
 335     wxWindowList::compatibility_iterator node;
 336     for ( ;; )
 337     {
 338         // we iterate until the list becomes empty
 339         node = GetChildren().GetFirst();
 340         if ( !node )
 341             break;
 342
 343         wxWindow *child = node->GetData();
 344
 345         // note that we really want to call delete and not ->Destroy() here
 346         // because we want to delete the child immediately, before we are
 347         // deleted, and delayed deletion would result in problems as our (top
 348         // level) child could outlive its parent
 349         delete child;
 350
 351         wxASSERT_MSG( !GetChildren().Find(child),
 352                       wxT("child didn't remove itself using RemoveChild()") );
 353     }
 354
 355     return true;
 356 }
 357
 358 // ----------------------------------------------------------------------------
 359 // size/position related methods
 360 // ----------------------------------------------------------------------------
 361
 362 // centre the window with respect to its parent in either (or both) directions
 363 void wxWindowBase::Centre(int direction)
 364 {
 365     // the position/size of the parent window or of the entire screen
 366     wxPoint posParent;
 367     int widthParent, heightParent;
 368
 369     wxWindow *parent = NULL;
 370
 371     if ( !(direction & wxCENTRE_ON_SCREEN) )
 372     {
 373         // find the parent to centre this window on: it should be the
 374         // immediate parent for the controls but the top level parent for the
 375         // top level windows (like dialogs)
 376         parent = GetParent();
 377         if ( IsTopLevel() )
 378         {
 379             while ( parent && !parent->IsTopLevel() )
 380             {
 381                 parent = parent->GetParent();
 382             }
 383         }
 384
 385         // there is no wxTopLevelWindow under wxMotif yet
 386 #ifndef __WXMOTIF__
 387         // we shouldn't center the dialog on the iconized window: under
 388         // Windows, for example, this places it completely off the screen
 389         if ( parent )
 390         {
 391             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 392             if ( winTop && winTop->IsIconized() )
 393             {
 394                 parent = NULL;
 395             }
 396         }
 397 #endif // __WXMOTIF__
 398
 399         // did we find the parent?
 400         if ( !parent )
 401         {
 402             // no other choice
 403             direction |= wxCENTRE_ON_SCREEN;
 404         }
 405     }
 406
 407     if ( direction & wxCENTRE_ON_SCREEN )
 408     {
 409         // centre with respect to the whole screen
 410         wxDisplaySize(&widthParent, &heightParent);
 411     }
 412     else
 413     {
 414         if ( IsTopLevel() )
 415         {
 416             // centre on the parent
 417             parent->GetSize(&widthParent, &heightParent);
 418
 419             // adjust to the parents position
 420             posParent = parent->GetPosition();
 421         }
 422         else
 423         {
 424             // centre inside the parents client rectangle
 425             parent->GetClientSize(&widthParent, &heightParent);
 426         }
 427     }
 428
 429     int width, height;
 430     GetSize(&width, &height);
 431
 432     int xNew = -1,
 433         yNew = -1;
 434
 435     if ( direction & wxHORIZONTAL )
 436         xNew = (widthParent - width)/2;
 437
 438     if ( direction & wxVERTICAL )
 439         yNew = (heightParent - height)/2;
 440
 441     xNew += posParent.x;
 442     yNew += posParent.y;
 443
 444     // Base size of the visible dimensions of the display
 445     // to take into account the taskbar
 446     wxRect rect = wxGetClientDisplayRect();
 447     wxSize size (rect.width,rect.height);
 448
 449     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 450     //     but it may mean that the window is placed on other than the main
 451     //     display. Therefore we only make sure centered window is on the main display
 452     //     if the parent is at least partially present here.
 453     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 454     {
 455         if (xNew < 0)
 456             xNew = 0;
 457         else if (xNew+width > size.x)
 458             xNew = size.x-width-1;
 459     }
 460     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 461     {
 462         if (yNew+height > size.y)
 463             yNew = size.y-height-1;
 464
 465         // Make certain that the title bar is initially visible
 466         // always, even if this would push the bottom of the
 467         // dialog of the visible area of the display
 468         if (yNew < 0)
 469             yNew = 0;
 470     }
 471
 472     // move the window to this position (keeping the old size but using
 473     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 474     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 475 }
 476
 477 // fits the window around the children
 478 void wxWindowBase::Fit()
 479 {
 480     if ( GetChildren().GetCount() > 0 )
 481     {
 482         SetClientSize(DoGetBestSize());
 483     }
 484     //else: do nothing if we have no children
 485 }
 486
 487 // fits virtual size (ie. scrolled area etc.) around children
 488 void wxWindowBase::FitInside()
 489 {
 490     if ( GetChildren().GetCount() > 0 )
 491     {
 492         SetVirtualSize( GetBestVirtualSize() );
 493     }
 494 }
 495
 496 // return the size best suited for the current window
 497 wxSize wxWindowBase::DoGetBestSize() const
 498 {
 499     if ( m_windowSizer )
 500     {
 501         return m_windowSizer->GetMinSize();
 502     }
 503 #if wxUSE_CONSTRAINTS
 504     else if ( m_constraints )
 505     {
 506         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 507
 508         // our minimal acceptable size is such that all our windows fit inside
 509         int maxX = 0,
 510             maxY = 0;
 511
 512         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 513               node;
 514               node = node->GetNext() )
 515         {
 516             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 517             if ( !c )
 518             {
 519                 // it's not normal that we have an unconstrained child, but
 520                 // what can we do about it?
 521                 continue;
 522             }
 523
 524             int x = c->right.GetValue(),
 525                 y = c->bottom.GetValue();
 526
 527             if ( x > maxX )
 528                 maxX = x;
 529
 530             if ( y > maxY )
 531                 maxY = y;
 532
 533             // TODO: we must calculate the overlaps somehow, otherwise we
 534             //       will never return a size bigger than the current one :-(
 535         }
 536
 537         return wxSize(maxX, maxY);
 538     }
 539 #endif // wxUSE_CONSTRAINTS
 540     else if ( GetChildren().GetCount() > 0 )
 541     {
 542         // our minimal acceptable size is such that all our windows fit inside
 543         int maxX = 0,
 544             maxY = 0;
 545
 546         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 547               node;
 548               node = node->GetNext() )
 549         {
 550             wxWindow *win = node->GetData();
 551             if ( win->IsTopLevel()
 552 #if wxUSE_STATUSBAR
 553                     || wxDynamicCast(win, wxStatusBar)
 554 #endif // wxUSE_STATUSBAR
 555                )
 556             {
 557                 // dialogs and frames lie in different top level windows -
 558                 // don't deal with them here; as for the status bars, they
 559                 // don't lie in the client area at all
 560                 continue;
 561             }
 562
 563             int wx, wy, ww, wh;
 564             win->GetPosition(&wx, &wy);
 565
 566             // if the window hadn't been positioned yet, assume that it is in
 567             // the origin
 568             if ( wx == -1 )
 569                 wx = 0;
 570             if ( wy == -1 )
 571                 wy = 0;
 572
 573             win->GetSize(&ww, &wh);
 574             if ( wx + ww > maxX )
 575                 maxX = wx + ww;
 576             if ( wy + wh > maxY )
 577                 maxY = wy + wh;
 578         }
 579
 580         // for compatibility with the old versions and because it really looks
 581         // slightly more pretty like this, add a pad
 582         maxX += 7;
 583         maxY += 14;
 584
 585         return wxSize(maxX, maxY);
 586     }
 587     else
 588     {
 589         // Windows which don't implement DoGetBestSize and aren't parents.
 590         // This emulates the behavior of a wxSizer without wxADJUST_MINSIZE
 591
 592         // If you get the following message you should do one of two things
 593         // 1. Do what it says (best)
 594         // 2. m_bestSize = GetSize() at end of Create() (hack)
 595         if(m_bestSize == wxDefaultSize)
 596         {
 597             wxLogDebug(wxT("Class %s (or superclass) should implement DoGetBestSize()"),GetClassInfo()->GetClassName());
 598             wxConstCast(this,wxWindowBase)->m_bestSize = GetSize();
 599         }
 600         return m_bestSize;
 601     }
 602 }
 603
 604 // by default the origin is not shifted
 605 wxPoint wxWindowBase::GetClientAreaOrigin() const
 606 {
 607     return wxPoint(0, 0);
 608 }
 609
 610 // set the min/max size of the window
 611 void wxWindowBase::SetSizeHints(int minW, int minH,
 612                                 int maxW, int maxH,
 613                                 int WXUNUSED(incW), int WXUNUSED(incH))
 614 {
 615     // setting min width greater than max width leads to infinite loops under
 616     // X11 and generally doesn't make any sense, so don't allow it
 617     wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
 618                     (minH == -1 || maxH == -1 || minH <= maxH),
 619                  _T("min width/height must be less than max width/height!") );
 620
 621     m_minWidth = minW;
 622     m_maxWidth = maxW;
 623     m_minHeight = minH;
 624     m_maxHeight = maxH;
 625 }
 626
 627 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 628 {
 629     if ( m_windowVariant != variant )
 630     {
 631         m_windowVariant = variant;
 632
 633         DoSetWindowVariant(variant);
 634     }
 635 }
 636
 637 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 638 {
 639     // adjust the font height to correspond to our new variant (notice that
 640     // we're only called if something really changed)
 641     wxFont font = GetFont();
 642     int size = font.GetPointSize();
 643     switch ( variant )
 644     {
 645         case wxWINDOW_VARIANT_NORMAL:
 646             break;
 647
 648         case wxWINDOW_VARIANT_SMALL:
 649             size *= 3;
 650             size /= 4;
 651             break;
 652
 653         case wxWINDOW_VARIANT_MINI:
 654             size *= 2;
 655             size /= 3;
 656             break;
 657
 658         case wxWINDOW_VARIANT_LARGE:
 659             size *= 5;
 660             size /= 4;
 661             break;
 662
 663         default:
 664             wxFAIL_MSG(_T("unexpected window variant"));
 665             break;
 666     }
 667
 668     font.SetPointSize(size);
 669     SetFont(font);
 670 }
 671
 672 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 673                                         int maxW, int maxH )
 674 {
 675     m_minVirtualWidth = minW;
 676     m_maxVirtualWidth = maxW;
 677     m_minVirtualHeight = minH;
 678     m_maxVirtualHeight = maxH;
 679 }
 680
 681 void wxWindowBase::DoSetVirtualSize( int x, int y )
 682 {
 683     if ( m_minVirtualWidth != -1 && m_minVirtualWidth > x )
 684         x = m_minVirtualWidth;
 685     if ( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )
 686         x = m_maxVirtualWidth;
 687     if ( m_minVirtualHeight != -1 && m_minVirtualHeight > y )
 688         y = m_minVirtualHeight;
 689     if ( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y )
 690         y = m_maxVirtualHeight;
 691
 692     m_virtualSize = wxSize(x, y);
 693 }
 694
 695 wxSize wxWindowBase::DoGetVirtualSize() const
 696 {
 697     wxSize  s( GetClientSize() );
 698
 699     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 700                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 701 }
 702
 703 // ----------------------------------------------------------------------------
 704 // show/hide/enable/disable the window
 705 // ----------------------------------------------------------------------------
 706
 707 bool wxWindowBase::Show(bool show)
 708 {
 709     if ( show != m_isShown )
 710     {
 711         m_isShown = show;
 712
 713         return true;
 714     }
 715     else
 716     {
 717         return false;
 718     }
 719 }
 720
 721 bool wxWindowBase::Enable(bool enable)
 722 {
 723     if ( enable != m_isEnabled )
 724     {
 725         m_isEnabled = enable;
 726
 727         return true;
 728     }
 729     else
 730     {
 731         return false;
 732     }
 733 }
 734 // ----------------------------------------------------------------------------
 735 // RTTI
 736 // ----------------------------------------------------------------------------
 737
 738 bool wxWindowBase::IsTopLevel() const
 739 {
 740     return false;
 741 }
 742
 743 // ----------------------------------------------------------------------------
 744 // reparenting the window
 745 // ----------------------------------------------------------------------------
 746
 747 void wxWindowBase::AddChild(wxWindowBase *child)
 748 {
 749     wxCHECK_RET( child, wxT("can't add a NULL child") );
 750
 751     // this should never happen and it will lead to a crash later if it does
 752     // because RemoveChild() will remove only one node from the children list
 753     // and the other(s) one(s) will be left with dangling pointers in them
 754     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 755
 756     GetChildren().Append((wxWindow*)child);
 757     child->SetParent(this);
 758 }
 759
 760 void wxWindowBase::RemoveChild(wxWindowBase *child)
 761 {
 762     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 763
 764     GetChildren().DeleteObject((wxWindow *)child);
 765     child->SetParent(NULL);
 766 }
 767
 768 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 769 {
 770     wxWindow *oldParent = GetParent();
 771     if ( newParent == oldParent )
 772     {
 773         // nothing done
 774         return false;
 775     }
 776
 777     // unlink this window from the existing parent.
 778     if ( oldParent )
 779     {
 780         oldParent->RemoveChild(this);
 781     }
 782     else
 783     {
 784         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 785     }
 786
 787     // add it to the new one
 788     if ( newParent )
 789     {
 790         newParent->AddChild(this);
 791     }
 792     else
 793     {
 794         wxTopLevelWindows.Append((wxWindow *)this);
 795     }
 796
 797     return true;
 798 }
 799
 800 // ----------------------------------------------------------------------------
 801 // event handler stuff
 802 // ----------------------------------------------------------------------------
 803
 804 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 805 {
 806     wxEvtHandler *handlerOld = GetEventHandler();
 807
 808     handler->SetNextHandler(handlerOld);
 809
 810     if ( handlerOld )
 811         GetEventHandler()->SetPreviousHandler(handler);
 812
 813     SetEventHandler(handler);
 814 }
 815
 816 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 817 {
 818     wxEvtHandler *handlerA = GetEventHandler();
 819     if ( handlerA )
 820     {
 821         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 822         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 823
 824         if ( handlerB )
 825             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 826         SetEventHandler(handlerB);
 827
 828         if ( deleteHandler )
 829         {
 830             delete handlerA;
 831             handlerA = (wxEvtHandler *)NULL;
 832         }
 833     }
 834
 835     return handlerA;
 836 }
 837
 838 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 839 {
 840     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 841
 842     wxEvtHandler *handlerPrev = NULL,
 843                  *handlerCur = GetEventHandler();
 844     while ( handlerCur )
 845     {
 846         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 847
 848         if ( handlerCur == handler )
 849         {
 850             if ( handlerPrev )
 851             {
 852                 handlerPrev->SetNextHandler(handlerNext);
 853             }
 854             else
 855             {
 856                 SetEventHandler(handlerNext);
 857             }
 858
 859             if ( handlerNext )
 860             {
 861                 handlerNext->SetPreviousHandler ( handlerPrev );
 862             }
 863
 864             handler->SetNextHandler(NULL);
 865             handler->SetPreviousHandler(NULL);
 866
 867             return true;
 868         }
 869
 870         handlerPrev = handlerCur;
 871         handlerCur = handlerNext;
 872     }
 873
 874     wxFAIL_MSG( _T("where has the event handler gone?") );
 875
 876     return false;
 877 }
 878
 879 // ----------------------------------------------------------------------------
 880 // colours, fonts &c
 881 // ----------------------------------------------------------------------------
 882
 883 /* static */ wxVisualAttributes
 884 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 885 {
 886     // it is important to return valid values for all attributes from here,
 887     // GetXXX() below rely on this
 888     wxVisualAttributes attrs;
 889     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 890     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 891     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 892
 893     return attrs;
 894 }
 895
 896 wxColour wxWindowBase::GetBackgroundColour() const
 897 {
 898     if ( !m_backgroundColour.Ok() )
 899     {
 900         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 901
 902         // get our default background colour
 903         wxColour colBg = GetDefaultAttributes().colBg;
 904
 905         // we must return some valid colour to avoid redoing this every time
 906         // and also to avoid surprizing the applications written for older
 907         // wxWindows versions where GetBackgroundColour() always returned
 908         // something -- so give them something even if it doesn't make sense
 909         // for this window (e.g. it has a themed background)
 910         if ( !colBg.Ok() )
 911             colBg = GetClassDefaultAttributes().colBg;
 912
 913         // cache it for the next call
 914         wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
 915     }
 916
 917     return m_backgroundColour;
 918 }
 919
 920 wxColour wxWindowBase::GetForegroundColour() const
 921 {
 922     // logic is the same as above
 923     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 924     {
 925         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 926
 927         wxColour colFg = GetDefaultAttributes().colFg;
 928
 929         if ( !colFg.Ok() )
 930             colFg = GetClassDefaultAttributes().colFg;
 931
 932         wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
 933     }
 934
 935     return m_foregroundColour;
 936 }
 937
 938 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 939 {
 940     if ( !colour.Ok() || (colour == m_backgroundColour) )
 941         return false;
 942
 943     m_backgroundColour = colour;
 944
 945     m_hasBgCol = true;
 946
 947     return true;
 948 }
 949
 950 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 951 {
 952     if ( !colour.Ok() || (colour == m_foregroundColour) )
 953         return false;
 954
 955     m_foregroundColour = colour;
 956
 957     m_hasFgCol = true;
 958
 959     return true;
 960 }
 961
 962 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 963 {
 964     // setting an invalid cursor is ok, it means that we don't have any special
 965     // cursor
 966     if ( m_cursor == cursor )
 967     {
 968         // no change
 969         return false;
 970     }
 971
 972     m_cursor = cursor;
 973
 974     return true;
 975 }
 976
 977 wxFont& wxWindowBase::DoGetFont() const
 978 {
 979     // logic is the same as in GetBackgroundColour()
 980     if ( !m_font.Ok() )
 981     {
 982         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
 983
 984         wxFont font = GetDefaultAttributes().font;
 985         if ( !font.Ok() )
 986             font = GetClassDefaultAttributes().font;
 987
 988         wxConstCast(this, wxWindowBase)->m_font = font;
 989     }
 990
 991     // cast is here for non-const GetFont() convenience
 992     return wxConstCast(this, wxWindowBase)->m_font;
 993 }
 994
 995 bool wxWindowBase::SetFont(const wxFont& font)
 996 {
 997     if ( !font.Ok() )
 998         return false;
 999
1000     if ( font == m_font )
1001     {
1002         // no change
1003         return false;
1004     }
1005
1006     m_font = font;
1007
1008     m_hasFont = true;
1009
1010     return true;
1011 }
1012
1013 #if wxUSE_PALETTE
1014
1015 void wxWindowBase::SetPalette(const wxPalette& pal)
1016 {
1017     m_hasCustomPalette = true;
1018     m_palette = pal;
1019
1020     // VZ: can anyone explain me what do we do here?
1021     wxWindowDC d((wxWindow *) this);
1022     d.SetPalette(pal);
1023 }
1024
1025 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1026 {
1027     wxWindow *win = (wxWindow *)this;
1028     while ( win && !win->HasCustomPalette() )
1029     {
1030         win = win->GetParent();
1031     }
1032
1033     return win;
1034 }
1035
1036 #endif // wxUSE_PALETTE
1037
1038 #if wxUSE_CARET
1039 void wxWindowBase::SetCaret(wxCaret *caret)
1040 {
1041     if ( m_caret )
1042     {
1043         delete m_caret;
1044     }
1045
1046     m_caret = caret;
1047
1048     if ( m_caret )
1049     {
1050         wxASSERT_MSG( m_caret->GetWindow() == this,
1051                       wxT("caret should be created associated to this window") );
1052     }
1053 }
1054 #endif // wxUSE_CARET
1055
1056 #if wxUSE_VALIDATORS
1057 // ----------------------------------------------------------------------------
1058 // validators
1059 // ----------------------------------------------------------------------------
1060
1061 void wxWindowBase::SetValidator(const wxValidator& validator)
1062 {
1063     if ( m_windowValidator )
1064         delete m_windowValidator;
1065
1066     m_windowValidator = (wxValidator *)validator.Clone();
1067
1068     if ( m_windowValidator )
1069         m_windowValidator->SetWindow(this);
1070 }
1071 #endif // wxUSE_VALIDATORS
1072
1073 // ----------------------------------------------------------------------------
1074 // update region stuff
1075 // ----------------------------------------------------------------------------
1076
1077 wxRect wxWindowBase::GetUpdateClientRect() const
1078 {
1079     wxRegion rgnUpdate = GetUpdateRegion();
1080     rgnUpdate.Intersect(GetClientRect());
1081     wxRect rectUpdate = rgnUpdate.GetBox();
1082     wxPoint ptOrigin = GetClientAreaOrigin();
1083     rectUpdate.x -= ptOrigin.x;
1084     rectUpdate.y -= ptOrigin.y;
1085
1086     return rectUpdate;
1087 }
1088
1089 bool wxWindowBase::IsExposed(int x, int y) const
1090 {
1091     return m_updateRegion.Contains(x, y) != wxOutRegion;
1092 }
1093
1094 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1095 {
1096     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1097 }
1098
1099 void wxWindowBase::ClearBackground()
1100 {
1101     // wxGTK uses its own version, no need to add never used code
1102 #ifndef __WXGTK__
1103     wxClientDC dc((wxWindow *)this);
1104     wxBrush brush(GetBackgroundColour(), wxSOLID);
1105     dc.SetBackground(brush);
1106     dc.Clear();
1107 #endif // __WXGTK__
1108 }
1109
1110 // ----------------------------------------------------------------------------
1111 // find child window by id or name
1112 // ----------------------------------------------------------------------------
1113
1114 wxWindow *wxWindowBase::FindWindow( long id )
1115 {
1116     if ( id == m_windowId )
1117         return (wxWindow *)this;
1118
1119     wxWindowBase *res = (wxWindow *)NULL;
1120     wxWindowList::compatibility_iterator node;
1121     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1122     {
1123         wxWindowBase *child = node->GetData();
1124         res = child->FindWindow( id );
1125     }
1126
1127     return (wxWindow *)res;
1128 }
1129
1130 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1131 {
1132     if ( name == m_windowName )
1133         return (wxWindow *)this;
1134
1135     wxWindowBase *res = (wxWindow *)NULL;
1136     wxWindowList::compatibility_iterator node;
1137     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1138     {
1139         wxWindow *child = node->GetData();
1140         res = child->FindWindow(name);
1141     }
1142
1143     return (wxWindow *)res;
1144 }
1145
1146
1147 // find any window by id or name or label: If parent is non-NULL, look through
1148 // children for a label or title matching the specified string. If NULL, look
1149 // through all top-level windows.
1150 //
1151 // to avoid duplicating code we reuse the same helper function but with
1152 // different comparators
1153
1154 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1155                                 const wxString& label, long id);
1156
1157 static
1158 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1159                            long WXUNUSED(id))
1160 {
1161     return win->GetLabel() == label;
1162 }
1163
1164 static
1165 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1166                           long WXUNUSED(id))
1167 {
1168     return win->GetName() == label;
1169 }
1170
1171 static
1172 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1173                         long id)
1174 {
1175     return win->GetId() == id;
1176 }
1177
1178 // recursive helper for the FindWindowByXXX() functions
1179 static
1180 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1181                                   const wxString& label,
1182                                   long id,
1183                                   wxFindWindowCmp cmp)
1184 {
1185     if ( parent )
1186     {
1187         // see if this is the one we're looking for
1188         if ( (*cmp)(parent, label, id) )
1189             return (wxWindow *)parent;
1190
1191         // It wasn't, so check all its children
1192         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1193               node;
1194               node = node->GetNext() )
1195         {
1196             // recursively check each child
1197             wxWindow *win = (wxWindow *)node->GetData();
1198             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1199             if (retwin)
1200                 return retwin;
1201         }
1202     }
1203
1204     // Not found
1205     return NULL;
1206 }
1207
1208 // helper for FindWindowByXXX()
1209 static
1210 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1211                              const wxString& label,
1212                              long id,
1213                              wxFindWindowCmp cmp)
1214 {
1215     if ( parent )
1216     {
1217         // just check parent and all its children
1218         return wxFindWindowRecursively(parent, label, id, cmp);
1219     }
1220
1221     // start at very top of wx's windows
1222     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1223           node;
1224           node = node->GetNext() )
1225     {
1226         // recursively check each window & its children
1227         wxWindow *win = node->GetData();
1228         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1229         if (retwin)
1230             return retwin;
1231     }
1232
1233     return NULL;
1234 }
1235
1236 /* static */
1237 wxWindow *
1238 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1239 {
1240     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1241 }
1242
1243 /* static */
1244 wxWindow *
1245 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1246 {
1247     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1248
1249     if ( !win )
1250     {
1251         // fall back to the label
1252         win = FindWindowByLabel(title, parent);
1253     }
1254
1255     return win;
1256 }
1257
1258 /* static */
1259 wxWindow *
1260 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1261 {
1262     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1263 }
1264
1265 // ----------------------------------------------------------------------------
1266 // dialog oriented functions
1267 // ----------------------------------------------------------------------------
1268
1269 void wxWindowBase::MakeModal(bool modal)
1270 {
1271     // Disable all other windows
1272     if ( IsTopLevel() )
1273     {
1274         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1275         while (node)
1276         {
1277             wxWindow *win = node->GetData();
1278             if (win != this)
1279                 win->Enable(!modal);
1280
1281             node = node->GetNext();
1282         }
1283     }
1284 }
1285
1286 bool wxWindowBase::Validate()
1287 {
1288 #if wxUSE_VALIDATORS
1289     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1290
1291     wxWindowList::compatibility_iterator node;
1292     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1293     {
1294         wxWindowBase *child = node->GetData();
1295         wxValidator *validator = child->GetValidator();
1296         if ( validator && !validator->Validate((wxWindow *)this) )
1297         {
1298             return false;
1299         }
1300
1301         if ( recurse && !child->Validate() )
1302         {
1303             return false;
1304         }
1305     }
1306 #endif // wxUSE_VALIDATORS
1307
1308     return true;
1309 }
1310
1311 bool wxWindowBase::TransferDataToWindow()
1312 {
1313 #if wxUSE_VALIDATORS
1314     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1315
1316     wxWindowList::compatibility_iterator node;
1317     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1318     {
1319         wxWindowBase *child = node->GetData();
1320         wxValidator *validator = child->GetValidator();
1321         if ( validator && !validator->TransferToWindow() )
1322         {
1323             wxLogWarning(_("Could not transfer data to window"));
1324 #if wxUSE_LOG
1325             wxLog::FlushActive();
1326 #endif // wxUSE_LOG
1327
1328             return false;
1329         }
1330
1331         if ( recurse )
1332         {
1333             if ( !child->TransferDataToWindow() )
1334             {
1335                 // warning already given
1336                 return false;
1337             }
1338         }
1339     }
1340 #endif // wxUSE_VALIDATORS
1341
1342     return true;
1343 }
1344
1345 bool wxWindowBase::TransferDataFromWindow()
1346 {
1347 #if wxUSE_VALIDATORS
1348     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1349
1350     wxWindowList::compatibility_iterator node;
1351     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1352     {
1353         wxWindow *child = node->GetData();
1354         wxValidator *validator = child->GetValidator();
1355         if ( validator && !validator->TransferFromWindow() )
1356         {
1357             // nop warning here because the application is supposed to give
1358             // one itself - we don't know here what might have gone wrongly
1359
1360             return false;
1361         }
1362
1363         if ( recurse )
1364         {
1365             if ( !child->TransferDataFromWindow() )
1366             {
1367                 // warning already given
1368                 return false;
1369             }
1370         }
1371     }
1372 #endif // wxUSE_VALIDATORS
1373
1374     return true;
1375 }
1376
1377 void wxWindowBase::InitDialog()
1378 {
1379     wxInitDialogEvent event(GetId());
1380     event.SetEventObject( this );
1381     GetEventHandler()->ProcessEvent(event);
1382 }
1383
1384 // ----------------------------------------------------------------------------
1385 // context-sensitive help support
1386 // ----------------------------------------------------------------------------
1387
1388 #if wxUSE_HELP
1389
1390 // associate this help text with this window
1391 void wxWindowBase::SetHelpText(const wxString& text)
1392 {
1393     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1394     if ( helpProvider )
1395     {
1396         helpProvider->AddHelp(this, text);
1397     }
1398 }
1399
1400 // associate this help text with all windows with the same id as this
1401 // one
1402 void wxWindowBase::SetHelpTextForId(const wxString& text)
1403 {
1404     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1405     if ( helpProvider )
1406     {
1407         helpProvider->AddHelp(GetId(), text);
1408     }
1409 }
1410
1411 // get the help string associated with this window (may be empty)
1412 wxString wxWindowBase::GetHelpText() const
1413 {
1414     wxString text;
1415     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1416     if ( helpProvider )
1417     {
1418         text = helpProvider->GetHelp(this);
1419     }
1420
1421     return text;
1422 }
1423
1424 // show help for this window
1425 void wxWindowBase::OnHelp(wxHelpEvent& event)
1426 {
1427     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1428     if ( helpProvider )
1429     {
1430         if ( helpProvider->ShowHelp(this) )
1431         {
1432             // skip the event.Skip() below
1433             return;
1434         }
1435     }
1436
1437     event.Skip();
1438 }
1439
1440 #endif // wxUSE_HELP
1441
1442 // ----------------------------------------------------------------------------
1443 // tooltipsroot.Replace("\\", "/");
1444 // ----------------------------------------------------------------------------
1445
1446 #if wxUSE_TOOLTIPS
1447
1448 void wxWindowBase::SetToolTip( const wxString &tip )
1449 {
1450     // don't create the new tooltip if we already have one
1451     if ( m_tooltip )
1452     {
1453         m_tooltip->SetTip( tip );
1454     }
1455     else
1456     {
1457         SetToolTip( new wxToolTip( tip ) );
1458     }
1459
1460     // setting empty tooltip text does not remove the tooltip any more - use
1461     // SetToolTip((wxToolTip *)NULL) for this
1462 }
1463
1464 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1465 {
1466     if ( m_tooltip )
1467         delete m_tooltip;
1468
1469     m_tooltip = tooltip;
1470 }
1471
1472 #endif // wxUSE_TOOLTIPS
1473
1474 // ----------------------------------------------------------------------------
1475 // constraints and sizers
1476 // ----------------------------------------------------------------------------
1477
1478 #if wxUSE_CONSTRAINTS
1479
1480 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1481 {
1482     if ( m_constraints )
1483     {
1484         UnsetConstraints(m_constraints);
1485         delete m_constraints;
1486     }
1487     m_constraints = constraints;
1488     if ( m_constraints )
1489     {
1490         // Make sure other windows know they're part of a 'meaningful relationship'
1491         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1492             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1493         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1494             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1495         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1496             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1497         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1498             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1499         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1500             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1501         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1502             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1503         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1504             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1505         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1506             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1507     }
1508 }
1509
1510 // This removes any dangling pointers to this window in other windows'
1511 // constraintsInvolvedIn lists.
1512 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1513 {
1514     if ( c )
1515     {
1516         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1517             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1518         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1519             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1520         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1521             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1522         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1523             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1524         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1525             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1526         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1527             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1528         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1529             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1530         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1531             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1532     }
1533 }
1534
1535 // Back-pointer to other windows we're involved with, so if we delete this
1536 // window, we must delete any constraints we're involved with.
1537 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1538 {
1539     if ( !m_constraintsInvolvedIn )
1540         m_constraintsInvolvedIn = new wxWindowList;
1541     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1542         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1543 }
1544
1545 // REMOVE back-pointer to other windows we're involved with.
1546 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1547 {
1548     if ( m_constraintsInvolvedIn )
1549         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1550 }
1551
1552 // Reset any constraints that mention this window
1553 void wxWindowBase::DeleteRelatedConstraints()
1554 {
1555     if ( m_constraintsInvolvedIn )
1556     {
1557         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1558         while (node)
1559         {
1560             wxWindow *win = node->GetData();
1561             wxLayoutConstraints *constr = win->GetConstraints();
1562
1563             // Reset any constraints involving this window
1564             if ( constr )
1565             {
1566                 constr->left.ResetIfWin(this);
1567                 constr->top.ResetIfWin(this);
1568                 constr->right.ResetIfWin(this);
1569                 constr->bottom.ResetIfWin(this);
1570                 constr->width.ResetIfWin(this);
1571                 constr->height.ResetIfWin(this);
1572                 constr->centreX.ResetIfWin(this);
1573                 constr->centreY.ResetIfWin(this);
1574             }
1575
1576             wxWindowList::compatibility_iterator next = node->GetNext();
1577             m_constraintsInvolvedIn->Erase(node);
1578             node = next;
1579         }
1580
1581         delete m_constraintsInvolvedIn;
1582         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1583     }
1584 }
1585
1586 #endif // wxUSE_CONSTRAINTS
1587
1588 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1589 {
1590     if ( sizer == m_windowSizer)
1591         return;
1592
1593     if ( deleteOld )
1594         delete m_windowSizer;
1595
1596     m_windowSizer = sizer;
1597
1598     SetAutoLayout( sizer != NULL );
1599 }
1600
1601 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1602 {
1603     SetSizer( sizer, deleteOld );
1604     sizer->SetSizeHints( (wxWindow*) this );
1605 }
1606
1607 #if wxUSE_CONSTRAINTS
1608
1609 void wxWindowBase::SatisfyConstraints()
1610 {
1611     wxLayoutConstraints *constr = GetConstraints();
1612     bool wasOk = constr && constr->AreSatisfied();
1613
1614     ResetConstraints();   // Mark all constraints as unevaluated
1615
1616     int noChanges = 1;
1617
1618     // if we're a top level panel (i.e. our parent is frame/dialog), our
1619     // own constraints will never be satisfied any more unless we do it
1620     // here
1621     if ( wasOk )
1622     {
1623         while ( noChanges > 0 )
1624         {
1625             LayoutPhase1(&noChanges);
1626         }
1627     }
1628
1629     LayoutPhase2(&noChanges);
1630 }
1631
1632 #endif // wxUSE_CONSTRAINTS
1633
1634 bool wxWindowBase::Layout()
1635 {
1636     // If there is a sizer, use it instead of the constraints
1637     if ( GetSizer() )
1638     {
1639         int w, h;
1640         GetVirtualSize(&w, &h);
1641         GetSizer()->SetDimension( 0, 0, w, h );
1642     }
1643 #if wxUSE_CONSTRAINTS
1644     else
1645     {
1646         SatisfyConstraints(); // Find the right constraints values
1647         SetConstraintSizes(); // Recursively set the real window sizes
1648     }
1649 #endif
1650
1651     return true;
1652 }
1653
1654 #if wxUSE_CONSTRAINTS
1655
1656 // first phase of the constraints evaluation: set our own constraints
1657 bool wxWindowBase::LayoutPhase1(int *noChanges)
1658 {
1659     wxLayoutConstraints *constr = GetConstraints();
1660
1661     return !constr || constr->SatisfyConstraints(this, noChanges);
1662 }
1663
1664 // second phase: set the constraints for our children
1665 bool wxWindowBase::LayoutPhase2(int *noChanges)
1666 {
1667     *noChanges = 0;
1668
1669     // Layout children
1670     DoPhase(1);
1671
1672     // Layout grand children
1673     DoPhase(2);
1674
1675     return true;
1676 }
1677
1678 // Do a phase of evaluating child constraints
1679 bool wxWindowBase::DoPhase(int phase)
1680 {
1681     // the list containing the children for which the constraints are already
1682     // set correctly
1683     wxWindowList succeeded;
1684
1685     // the max number of iterations we loop before concluding that we can't set
1686     // the constraints
1687     static const int maxIterations = 500;
1688
1689     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1690     {
1691         int noChanges = 0;
1692
1693         // loop over all children setting their constraints
1694         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1695               node;
1696               node = node->GetNext() )
1697         {
1698             wxWindow *child = node->GetData();
1699             if ( child->IsTopLevel() )
1700             {
1701                 // top level children are not inside our client area
1702                 continue;
1703             }
1704
1705             if ( !child->GetConstraints() || succeeded.Find(child) )
1706             {
1707                 // this one is either already ok or nothing we can do about it
1708                 continue;
1709             }
1710
1711             int tempNoChanges = 0;
1712             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1713                                       : child->LayoutPhase2(&tempNoChanges);
1714             noChanges += tempNoChanges;
1715
1716             if ( success )
1717             {
1718                 succeeded.Append(child);
1719             }
1720         }
1721
1722         if ( !noChanges )
1723         {
1724             // constraints are set
1725             break;
1726         }
1727     }
1728
1729     return true;
1730 }
1731
1732 void wxWindowBase::ResetConstraints()
1733 {
1734     wxLayoutConstraints *constr = GetConstraints();
1735     if ( constr )
1736     {
1737         constr->left.SetDone(false);
1738         constr->top.SetDone(false);
1739         constr->right.SetDone(false);
1740         constr->bottom.SetDone(false);
1741         constr->width.SetDone(false);
1742         constr->height.SetDone(false);
1743         constr->centreX.SetDone(false);
1744         constr->centreY.SetDone(false);
1745     }
1746
1747     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1748     while (node)
1749     {
1750         wxWindow *win = node->GetData();
1751         if ( !win->IsTopLevel() )
1752             win->ResetConstraints();
1753         node = node->GetNext();
1754     }
1755 }
1756
1757 // Need to distinguish between setting the 'fake' size for windows and sizers,
1758 // and setting the real values.
1759 void wxWindowBase::SetConstraintSizes(bool recurse)
1760 {
1761     wxLayoutConstraints *constr = GetConstraints();
1762     if ( constr && constr->AreSatisfied() )
1763     {
1764         int x = constr->left.GetValue();
1765         int y = constr->top.GetValue();
1766         int w = constr->width.GetValue();
1767         int h = constr->height.GetValue();
1768
1769         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1770              (constr->height.GetRelationship() != wxAsIs) )
1771         {
1772             SetSize(x, y, w, h);
1773         }
1774         else
1775         {
1776             // If we don't want to resize this window, just move it...
1777             Move(x, y);
1778         }
1779     }
1780     else if ( constr )
1781     {
1782         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1783                    GetClassInfo()->GetClassName(),
1784                    GetName().c_str());
1785     }
1786
1787     if ( recurse )
1788     {
1789         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1790         while (node)
1791         {
1792             wxWindow *win = node->GetData();
1793             if ( !win->IsTopLevel() && win->GetConstraints() )
1794                 win->SetConstraintSizes();
1795             node = node->GetNext();
1796         }
1797     }
1798 }
1799
1800 // Only set the size/position of the constraint (if any)
1801 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1802 {
1803     wxLayoutConstraints *constr = GetConstraints();
1804     if ( constr )
1805     {
1806         if ( x != -1 )
1807         {
1808             constr->left.SetValue(x);
1809             constr->left.SetDone(true);
1810         }
1811         if ( y != -1 )
1812         {
1813             constr->top.SetValue(y);
1814             constr->top.SetDone(true);
1815         }
1816         if ( w != -1 )
1817         {
1818             constr->width.SetValue(w);
1819             constr->width.SetDone(true);
1820         }
1821         if ( h != -1 )
1822         {
1823             constr->height.SetValue(h);
1824             constr->height.SetDone(true);
1825         }
1826     }
1827 }
1828
1829 void wxWindowBase::MoveConstraint(int x, int y)
1830 {
1831     wxLayoutConstraints *constr = GetConstraints();
1832     if ( constr )
1833     {
1834         if ( x != -1 )
1835         {
1836             constr->left.SetValue(x);
1837             constr->left.SetDone(true);
1838         }
1839         if ( y != -1 )
1840         {
1841             constr->top.SetValue(y);
1842             constr->top.SetDone(true);
1843         }
1844     }
1845 }
1846
1847 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1848 {
1849     wxLayoutConstraints *constr = GetConstraints();
1850     if ( constr )
1851     {
1852         *w = constr->width.GetValue();
1853         *h = constr->height.GetValue();
1854     }
1855     else
1856         GetSize(w, h);
1857 }
1858
1859 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1860 {
1861     wxLayoutConstraints *constr = GetConstraints();
1862     if ( constr )
1863     {
1864         *w = constr->width.GetValue();
1865         *h = constr->height.GetValue();
1866     }
1867     else
1868         GetClientSize(w, h);
1869 }
1870
1871 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1872 {
1873     wxLayoutConstraints *constr = GetConstraints();
1874     if ( constr )
1875     {
1876         *x = constr->left.GetValue();
1877         *y = constr->top.GetValue();
1878     }
1879     else
1880         GetPosition(x, y);
1881 }
1882
1883 #endif // wxUSE_CONSTRAINTS
1884
1885 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1886 {
1887     // don't do it for the dialogs/frames - they float independently of their
1888     // parent
1889     if ( !IsTopLevel() )
1890     {
1891         wxWindow *parent = GetParent();
1892         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1893         {
1894             wxPoint pt(parent->GetClientAreaOrigin());
1895             x += pt.x;
1896             y += pt.y;
1897         }
1898     }
1899 }
1900
1901 // ----------------------------------------------------------------------------
1902 // do Update UI processing for child controls
1903 // ----------------------------------------------------------------------------
1904
1905 void wxWindowBase::UpdateWindowUI(long flags)
1906 {
1907     wxUpdateUIEvent event(GetId());
1908     event.m_eventObject = this;
1909
1910     if ( GetEventHandler()->ProcessEvent(event) )
1911     {
1912         DoUpdateWindowUI(event);
1913     }
1914
1915     if (flags & wxUPDATE_UI_RECURSE)
1916     {
1917         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1918         while (node)
1919         {
1920             wxWindow* child = (wxWindow*) node->GetData();
1921             child->UpdateWindowUI(flags);
1922             node = node->GetNext();
1923         }
1924     }
1925 }
1926
1927 // do the window-specific processing after processing the update event
1928 // TODO: take specific knowledge out of this function and
1929 // put in each control's base class. Unfortunately we don't
1930 // yet have base implementation files for wxCheckBox and wxRadioButton.
1931 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1932 {
1933     if ( event.GetSetEnabled() )
1934         Enable(event.GetEnabled());
1935
1936 #if wxUSE_CONTROLS
1937     if ( event.GetSetText() )
1938     {
1939         wxControl *control = wxDynamicCastThis(wxControl);
1940         if ( control )
1941         {
1942             if ( event.GetText() != control->GetLabel() )
1943                 control->SetLabel(event.GetText());
1944         }
1945 #if wxUSE_CHECKBOX
1946         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1947         if ( checkbox )
1948         {
1949             if ( event.GetSetChecked() )
1950                 checkbox->SetValue(event.GetChecked());
1951         }
1952 #endif // wxUSE_CHECKBOX
1953
1954 #if wxUSE_RADIOBTN
1955         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1956         if ( radiobtn )
1957         {
1958             if ( event.GetSetChecked() )
1959                 radiobtn->SetValue(event.GetChecked());
1960         }
1961 #endif // wxUSE_RADIOBTN
1962     }
1963 #endif
1964 }
1965
1966 #if 0
1967 // call internal idle recursively
1968 // may be obsolete (wait until OnIdle scheme stabilises)
1969 void wxWindowBase::ProcessInternalIdle()
1970 {
1971     OnInternalIdle();
1972
1973     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1974     while (node)
1975     {
1976         wxWindow *child = node->GetData();
1977         child->ProcessInternalIdle();
1978         node = node->GetNext();
1979     }
1980 }
1981 #endif
1982
1983 // ----------------------------------------------------------------------------
1984 // dialog units translations
1985 // ----------------------------------------------------------------------------
1986
1987 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1988 {
1989     int charWidth = GetCharWidth();
1990     int charHeight = GetCharHeight();
1991     wxPoint pt2(-1, -1);
1992     if (pt.x != -1)
1993         pt2.x = (int) ((pt.x * 4) / charWidth);
1994     if (pt.y != -1)
1995         pt2.y = (int) ((pt.y * 8) / charHeight);
1996
1997     return pt2;
1998 }
1999
2000 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2001 {
2002     int charWidth = GetCharWidth();
2003     int charHeight = GetCharHeight();
2004     wxPoint pt2(-1, -1);
2005     if (pt.x != -1)
2006         pt2.x = (int) ((pt.x * charWidth) / 4);
2007     if (pt.y != -1)
2008         pt2.y = (int) ((pt.y * charHeight) / 8);
2009
2010     return pt2;
2011 }
2012
2013 // ----------------------------------------------------------------------------
2014 // event handlers
2015 // ----------------------------------------------------------------------------
2016
2017 // propagate the colour change event to the subwindows
2018 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2019 {
2020     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2021     while ( node )
2022     {
2023         // Only propagate to non-top-level windows
2024         wxWindow *win = node->GetData();
2025         if ( !win->IsTopLevel() )
2026         {
2027             wxSysColourChangedEvent event2;
2028             event.m_eventObject = win;
2029             win->GetEventHandler()->ProcessEvent(event2);
2030         }
2031
2032         node = node->GetNext();
2033     }
2034 }
2035
2036 // the default action is to populate dialog with data when it's created,
2037 // and nudge the UI into displaying itself correctly in case
2038 // we've turned the wxUpdateUIEvents frequency down low.
2039 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2040 {
2041     TransferDataToWindow();
2042
2043     // Update the UI at this point
2044     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2045 }
2046
2047 // process Ctrl-Alt-mclick
2048 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2049 {
2050 #if wxUSE_MSGDLG
2051     if ( event.ControlDown() && event.AltDown() )
2052     {
2053         // don't translate these strings
2054         wxString port;
2055
2056 #ifdef __WXUNIVERSAL__
2057         port = _T("Univ/");
2058 #endif // __WXUNIVERSAL__
2059
2060         switch ( wxGetOsVersion() )
2061         {
2062             case wxMOTIF_X:     port += _T("Motif"); break;
2063             case wxMAC:
2064             case wxMAC_DARWIN:  port += _T("Mac"); break;
2065             case wxBEOS:        port += _T("BeOS"); break;
2066             case wxGTK:
2067             case wxGTK_WIN32:
2068             case wxGTK_OS2:
2069             case wxGTK_BEOS:    port += _T("GTK"); break;
2070             case wxWINDOWS:
2071             case wxPENWINDOWS:
2072             case wxWINDOWS_NT:
2073             case wxWIN32S:
2074             case wxWIN95:
2075             case wxWIN386:      port += _T("MS Windows"); break;
2076             case wxMGL_UNIX:
2077             case wxMGL_X:
2078             case wxMGL_WIN32:
2079             case wxMGL_OS2:     port += _T("MGL"); break;
2080             case wxWINDOWS_OS2:
2081             case wxOS2_PM:      port += _T("OS/2"); break;
2082             default:            port += _T("unknown"); break;
2083         }
2084
2085         wxMessageBox(wxString::Format(
2086                                       _T(
2087                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
2088                                         ),
2089                                       port.c_str(),
2090                                       wxMAJOR_VERSION,
2091                                       wxMINOR_VERSION,
2092                                       wxRELEASE_NUMBER,
2093 #if wxUSE_UNICODE
2094                                       L" (Unicode)",
2095 #else
2096                                       "",
2097 #endif
2098                                       __TDATE__,
2099                                       __TTIME__
2100                                      ),
2101                      _T("wxWindows information"),
2102                      wxICON_INFORMATION | wxOK,
2103                      (wxWindow *)this);
2104     }
2105     else
2106 #endif // wxUSE_MSGDLG
2107     {
2108         event.Skip();
2109     }
2110 }
2111
2112 // ----------------------------------------------------------------------------
2113 // accessibility
2114 // ----------------------------------------------------------------------------
2115
2116 #if wxUSE_ACCESSIBILITY
2117 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2118 {
2119     if (m_accessible && (accessible != m_accessible))
2120         delete m_accessible;
2121     m_accessible = accessible;
2122     if (m_accessible)
2123         m_accessible->SetWindow((wxWindow*) this);
2124 }
2125
2126 // Returns the accessible object, creating if necessary.
2127 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2128 {
2129     if (!m_accessible)
2130         m_accessible = CreateAccessible();
2131     return m_accessible;
2132 }
2133
2134 // Override to create a specific accessible object.
2135 wxAccessible* wxWindowBase::CreateAccessible()
2136 {
2137     return new wxWindowAccessible((wxWindow*) this);
2138 }
2139
2140 #endif
2141
2142 #if !wxUSE_STL
2143 // ----------------------------------------------------------------------------
2144 // list classes implementation
2145 // ----------------------------------------------------------------------------
2146
2147 void wxWindowListNode::DeleteData()
2148 {
2149     delete (wxWindow *)GetData();
2150 }
2151 #endif
2152
2153 // ----------------------------------------------------------------------------
2154 // borders
2155 // ----------------------------------------------------------------------------
2156
2157 wxBorder wxWindowBase::GetBorder(long flags) const
2158 {
2159     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2160     if ( border == wxBORDER_DEFAULT )
2161     {
2162         border = GetDefaultBorder();
2163     }
2164
2165     return border;
2166 }
2167
2168 wxBorder wxWindowBase::GetDefaultBorder() const
2169 {
2170     return wxBORDER_NONE;
2171 }
2172
2173 // ----------------------------------------------------------------------------
2174 // hit testing
2175 // ----------------------------------------------------------------------------
2176
2177 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2178 {
2179     // here we just check if the point is inside the window or not
2180
2181     // check the top and left border first
2182     bool outside = x < 0 || y < 0;
2183     if ( !outside )
2184     {
2185         // check the right and bottom borders too
2186         wxSize size = GetSize();
2187         outside = x >= size.x || y >= size.y;
2188     }
2189
2190     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2191 }
2192
2193 // ----------------------------------------------------------------------------
2194 // mouse capture
2195 // ----------------------------------------------------------------------------
2196
2197 struct WXDLLEXPORT wxWindowNext
2198 {
2199     wxWindow *win;
2200     wxWindowNext *next;
2201 } *wxWindowBase::ms_winCaptureNext = NULL;
2202
2203 void wxWindowBase::CaptureMouse()
2204 {
2205     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2206
2207     wxWindow *winOld = GetCapture();
2208     if ( winOld )
2209     {
2210         ((wxWindowBase*) winOld)->DoReleaseMouse();
2211
2212         // save it on stack
2213         wxWindowNext *item = new wxWindowNext;
2214         item->win = winOld;
2215         item->next = ms_winCaptureNext;
2216         ms_winCaptureNext = item;
2217     }
2218     //else: no mouse capture to save
2219
2220     DoCaptureMouse();
2221 }
2222
2223 void wxWindowBase::ReleaseMouse()
2224 {
2225     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2226
2227     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2228
2229     DoReleaseMouse();
2230
2231     if ( ms_winCaptureNext )
2232     {
2233         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2234
2235         wxWindowNext *item = ms_winCaptureNext;
2236         ms_winCaptureNext = item->next;
2237         delete item;
2238     }
2239     //else: stack is empty, no previous capture
2240
2241     wxLogTrace(_T("mousecapture"),
2242         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2243         GetCapture());
2244 }
2245
2246 #if wxUSE_HOTKEY
2247
2248 bool
2249 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2250                              int WXUNUSED(modifiers),
2251                              int WXUNUSED(keycode))
2252 {
2253     // not implemented
2254     return false;
2255 }
2256
2257 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2258 {
2259     // not implemented
2260     return false;
2261 }
2262
2263 #endif // wxUSE_HOTKEY
2264
2265 void wxWindowBase::SendDestroyEvent()
2266 {
2267     wxWindowDestroyEvent event;
2268     event.SetEventObject(this);
2269     event.SetId(GetId());
2270     GetEventHandler()->ProcessEvent(event);
2271 }
2272
2273 // ----------------------------------------------------------------------------
2274 // event processing
2275 // ----------------------------------------------------------------------------
2276
2277 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2278 {
2279 #if wxUSE_VALIDATORS
2280     // Can only use the validator of the window which
2281     // is receiving the event
2282     if ( event.GetEventObject() == this )
2283     {
2284         wxValidator *validator = GetValidator();
2285         if ( validator && validator->ProcessEvent(event) )
2286         {
2287             return true;
2288         }
2289     }
2290 #endif // wxUSE_VALIDATORS
2291
2292     return false;
2293 }
2294
2295 bool wxWindowBase::TryParent(wxEvent& event)
2296 {
2297     // carry on up the parent-child hierarchy if the propgation count hasn't
2298     // reached zero yet
2299     if ( event.ShouldPropagate() )
2300     {
2301         // honour the requests to stop propagation at this window: this is
2302         // used by the dialogs, for example, to prevent processing the events
2303         // from the dialog controls in the parent frame which rarely, if ever,
2304         // makes sense
2305         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2306         {
2307             wxWindow *parent = GetParent();
2308             if ( parent && !parent->IsBeingDeleted() )
2309             {
2310                 wxPropagateOnce propagateOnce(event);
2311
2312                 return parent->GetEventHandler()->ProcessEvent(event);
2313             }
2314         }
2315     }
2316
2317     return wxEvtHandler::TryParent(event);
2318 }
2319
2320 // ----------------------------------------------------------------------------
2321 // global functions
2322 // ----------------------------------------------------------------------------
2323
2324 wxWindow* wxGetTopLevelParent(wxWindow *win)
2325 {
2326     while ( win && !win->IsTopLevel() )
2327          win = win->GetParent();
2328
2329     return win;
2330 }
2331
2332 #if wxUSE_ACCESSIBILITY
2333 // ----------------------------------------------------------------------------
2334 // accessible object for windows
2335 // ----------------------------------------------------------------------------
2336
2337 // Can return either a child object, or an integer
2338 // representing the child element, starting from 1.
2339 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2340 {
2341     wxASSERT( GetWindow() != NULL );
2342     if (!GetWindow())
2343         return wxACC_FAIL;
2344
2345     return wxACC_NOT_IMPLEMENTED;
2346 }
2347
2348 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2349 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2350 {
2351     wxASSERT( GetWindow() != NULL );
2352     if (!GetWindow())
2353         return wxACC_FAIL;
2354
2355     wxWindow* win = NULL;
2356     if (elementId == 0)
2357     {
2358         win = GetWindow();
2359     }
2360     else
2361     {
2362         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2363         {
2364             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2365         }
2366         else
2367             return wxACC_FAIL;
2368     }
2369     if (win)
2370     {
2371         rect = win->GetRect();
2372         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2373             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2374         return wxACC_OK;
2375     }
2376
2377     return wxACC_NOT_IMPLEMENTED;
2378 }
2379
2380 // Navigates from fromId to toId/toObject.
2381 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2382                              int* WXUNUSED(toId), wxAccessible** toObject)
2383 {
2384     wxASSERT( GetWindow() != NULL );
2385     if (!GetWindow())
2386         return wxACC_FAIL;
2387
2388     switch (navDir)
2389     {
2390     case wxNAVDIR_FIRSTCHILD:
2391         {
2392             if (GetWindow()->GetChildren().GetCount() == 0)
2393                 return wxACC_FALSE;
2394             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2395             *toObject = childWindow->GetOrCreateAccessible();
2396
2397             return wxACC_OK;
2398         }
2399     case wxNAVDIR_LASTCHILD:
2400         {
2401             if (GetWindow()->GetChildren().GetCount() == 0)
2402                 return wxACC_FALSE;
2403             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2404             *toObject = childWindow->GetOrCreateAccessible();
2405
2406             return wxACC_OK;
2407         }
2408     case wxNAVDIR_RIGHT:
2409     case wxNAVDIR_DOWN:
2410     case wxNAVDIR_NEXT:
2411         {
2412             wxWindowList::compatibility_iterator node =
2413                 wxWindowList::compatibility_iterator();
2414             if (fromId == 0)
2415             {
2416                 // Can't navigate to sibling of this window
2417                 // if we're a top-level window.
2418                 if (!GetWindow()->GetParent())
2419                     return wxACC_NOT_IMPLEMENTED;
2420
2421                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2422             }
2423             else
2424             {
2425                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2426                     node = GetWindow()->GetChildren().Item(fromId-1);
2427             }
2428
2429             if (node && node->GetNext())
2430             {
2431                 wxWindow* nextWindow = node->GetNext()->GetData();
2432                 *toObject = nextWindow->GetOrCreateAccessible();
2433                 return wxACC_OK;
2434             }
2435             else
2436                 return wxACC_FALSE;
2437         }
2438     case wxNAVDIR_LEFT:
2439     case wxNAVDIR_UP:
2440     case wxNAVDIR_PREVIOUS:
2441         {
2442             wxWindowList::compatibility_iterator node =
2443                 wxWindowList::compatibility_iterator();
2444             if (fromId == 0)
2445             {
2446                 // Can't navigate to sibling of this window
2447                 // if we're a top-level window.
2448                 if (!GetWindow()->GetParent())
2449                     return wxACC_NOT_IMPLEMENTED;
2450
2451                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2452             }
2453             else
2454             {
2455                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2456                     node = GetWindow()->GetChildren().Item(fromId-1);
2457             }
2458
2459             if (node && node->GetPrevious())
2460             {
2461                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2462                 *toObject = previousWindow->GetOrCreateAccessible();
2463                 return wxACC_OK;
2464             }
2465             else
2466                 return wxACC_FALSE;
2467         }
2468     }
2469
2470     return wxACC_NOT_IMPLEMENTED;
2471 }
2472
2473 // Gets the name of the specified object.
2474 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2475 {
2476     wxASSERT( GetWindow() != NULL );
2477     if (!GetWindow())
2478         return wxACC_FAIL;
2479
2480     wxString title;
2481
2482     // If a child, leave wxWindows to call the function on the actual
2483     // child object.
2484     if (childId > 0)
2485         return wxACC_NOT_IMPLEMENTED;
2486
2487     // This will eventually be replaced by specialised
2488     // accessible classes, one for each kind of wxWindows
2489     // control or window.
2490     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2491         title = ((wxButton*) GetWindow())->GetLabel();
2492     else
2493         title = GetWindow()->GetName();
2494
2495     if (!title.IsEmpty())
2496     {
2497         *name = title;
2498         return wxACC_OK;
2499     }
2500     else
2501         return wxACC_NOT_IMPLEMENTED;
2502 }
2503
2504 // Gets the number of children.
2505 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2506 {
2507     wxASSERT( GetWindow() != NULL );
2508     if (!GetWindow())
2509         return wxACC_FAIL;
2510
2511     *childId = (int) GetWindow()->GetChildren().GetCount();
2512     return wxACC_OK;
2513 }
2514
2515 // Gets the specified child (starting from 1).
2516 // If *child is NULL and return value is wxACC_OK,
2517 // this means that the child is a simple element and
2518 // not an accessible object.
2519 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2520 {
2521     wxASSERT( GetWindow() != NULL );
2522     if (!GetWindow())
2523         return wxACC_FAIL;
2524
2525     if (childId == 0)
2526     {
2527         *child = this;
2528         return wxACC_OK;
2529     }
2530
2531     if (childId > (int) GetWindow()->GetChildren().GetCount())
2532         return wxACC_FAIL;
2533
2534     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2535     *child = childWindow->GetOrCreateAccessible();
2536     if (*child)
2537         return wxACC_OK;
2538     else
2539         return wxACC_FAIL;
2540 }
2541
2542 // Gets the parent, or NULL.
2543 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2544 {
2545     wxASSERT( GetWindow() != NULL );
2546     if (!GetWindow())
2547         return wxACC_FAIL;
2548
2549     wxWindow* parentWindow = GetWindow()->GetParent();
2550     if (!parentWindow)
2551     {
2552         *parent = NULL;
2553         return wxACC_OK;
2554     }
2555     else
2556     {
2557         *parent = parentWindow->GetOrCreateAccessible();
2558         if (*parent)
2559             return wxACC_OK;
2560         else
2561             return wxACC_FAIL;
2562     }
2563 }
2564
2565 // Performs the default action. childId is 0 (the action for this object)
2566 // or > 0 (the action for a child).
2567 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2568 // window (e.g. an edit control).
2569 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2570 {
2571     wxASSERT( GetWindow() != NULL );
2572     if (!GetWindow())
2573         return wxACC_FAIL;
2574
2575     return wxACC_NOT_IMPLEMENTED;
2576 }
2577
2578 // Gets the default action for this object (0) or > 0 (the action for a child).
2579 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2580 // string if there is no action.
2581 // The retrieved string describes the action that is performed on an object,
2582 // not what the object does as a result. For example, a toolbar button that prints
2583 // a document has a default action of "Press" rather than "Prints the current document."
2584 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2585 {
2586     wxASSERT( GetWindow() != NULL );
2587     if (!GetWindow())
2588         return wxACC_FAIL;
2589
2590     return wxACC_NOT_IMPLEMENTED;
2591 }
2592
2593 // Returns the description for this object or a child.
2594 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2595 {
2596     wxASSERT( GetWindow() != NULL );
2597     if (!GetWindow())
2598         return wxACC_FAIL;
2599
2600     wxString ht(GetWindow()->GetHelpText());
2601     if (!ht.IsEmpty())
2602     {
2603         *description = ht;
2604         return wxACC_OK;
2605     }
2606     return wxACC_NOT_IMPLEMENTED;
2607 }
2608
2609 // Returns help text for this object or a child, similar to tooltip text.
2610 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2611 {
2612     wxASSERT( GetWindow() != NULL );
2613     if (!GetWindow())
2614         return wxACC_FAIL;
2615
2616     wxString ht(GetWindow()->GetHelpText());
2617     if (!ht.IsEmpty())
2618     {
2619         *helpText = ht;
2620         return wxACC_OK;
2621     }
2622     return wxACC_NOT_IMPLEMENTED;
2623 }
2624
2625 // Returns the keyboard shortcut for this object or child.
2626 // Return e.g. ALT+K
2627 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2628 {
2629     wxASSERT( GetWindow() != NULL );
2630     if (!GetWindow())
2631         return wxACC_FAIL;
2632
2633     return wxACC_NOT_IMPLEMENTED;
2634 }
2635
2636 // Returns a role constant.
2637 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2638 {
2639     wxASSERT( GetWindow() != NULL );
2640     if (!GetWindow())
2641         return wxACC_FAIL;
2642
2643     // If a child, leave wxWindows to call the function on the actual
2644     // child object.
2645     if (childId > 0)
2646         return wxACC_NOT_IMPLEMENTED;
2647
2648     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2649         return wxACC_NOT_IMPLEMENTED;
2650 #if wxUSE_STATUSBAR
2651     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2652         return wxACC_NOT_IMPLEMENTED;
2653 #endif
2654 #if wxUSE_TOOLBAR
2655     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2656         return wxACC_NOT_IMPLEMENTED;
2657 #endif
2658
2659     //*role = wxROLE_SYSTEM_CLIENT;
2660     *role = wxROLE_SYSTEM_CLIENT;
2661     return wxACC_OK;
2662
2663     #if 0
2664     return wxACC_NOT_IMPLEMENTED;
2665     #endif
2666 }
2667
2668 // Returns a state constant.
2669 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2670 {
2671     wxASSERT( GetWindow() != NULL );
2672     if (!GetWindow())
2673         return wxACC_FAIL;
2674
2675     // If a child, leave wxWindows to call the function on the actual
2676     // child object.
2677     if (childId > 0)
2678         return wxACC_NOT_IMPLEMENTED;
2679
2680     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2681         return wxACC_NOT_IMPLEMENTED;
2682
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     *state = 0;
2693     return wxACC_OK;
2694
2695     #if 0
2696     return wxACC_NOT_IMPLEMENTED;
2697     #endif
2698 }
2699
2700 // Returns a localized string representing the value for the object
2701 // or child.
2702 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2703 {
2704     wxASSERT( GetWindow() != NULL );
2705     if (!GetWindow())
2706         return wxACC_FAIL;
2707
2708     return wxACC_NOT_IMPLEMENTED;
2709 }
2710
2711 // Selects the object or child.
2712 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2713 {
2714     wxASSERT( GetWindow() != NULL );
2715     if (!GetWindow())
2716         return wxACC_FAIL;
2717
2718     return wxACC_NOT_IMPLEMENTED;
2719 }
2720
2721 // Gets the window with the keyboard focus.
2722 // If childId is 0 and child is NULL, no object in
2723 // this subhierarchy has the focus.
2724 // If this object has the focus, child should be 'this'.
2725 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2726 {
2727     wxASSERT( GetWindow() != NULL );
2728     if (!GetWindow())
2729         return wxACC_FAIL;
2730
2731     return wxACC_NOT_IMPLEMENTED;
2732 }
2733
2734 // Gets a variant representing the selected children
2735 // of this object.
2736 // Acceptable values:
2737 // - a null variant (IsNull() returns TRUE)
2738 // - a list variant (GetType() == wxT("list")
2739 // - an integer representing the selected child element,
2740 //   or 0 if this object is selected (GetType() == wxT("long")
2741 // - a "void*" pointer to a wxAccessible child object
2742 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2743 {
2744     wxASSERT( GetWindow() != NULL );
2745     if (!GetWindow())
2746         return wxACC_FAIL;
2747
2748     return wxACC_NOT_IMPLEMENTED;
2749 }
2750
2751 #endif // wxUSE_ACCESSIBILITY