src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47 #endif //WX_PRECOMP
  48
  49 #if wxUSE_DRAG_AND_DROP
  50     #include "wx/dnd.h"
  51 #endif // wxUSE_DRAG_AND_DROP
  52
  53 #if wxUSE_ACCESSIBILITY
  54     #include "wx/access.h"
  55 #endif
  56
  57 #if wxUSE_HELP
  58     #include "wx/cshelp.h"
  59 #endif // wxUSE_HELP
  60
  61 #if wxUSE_TOOLTIPS
  62     #include "wx/tooltip.h"
  63 #endif // wxUSE_TOOLTIPS
  64
  65 #if wxUSE_CARET
  66     #include "wx/caret.h"
  67 #endif // wxUSE_CARET
  68
  69 #if wxUSE_SYSTEM_OPTIONS
  70     #include "wx/sysopt.h"
  71 #endif
  72
  73 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  74 // The gtk includes don't pull any other headers in, at least not on my system - MR
  75 #ifdef __WXGTK__
  76     #ifdef __WXGTK20__
  77         #include <gtk/gtkversion.h>
  78     #else
  79         #include <gtk/gtkfeatures.h>
  80     #endif
  81     extern const unsigned int gtk_major_version;
  82     extern const unsigned int gtk_minor_version;
  83     extern const unsigned int gtk_micro_version;
  84 #endif
  85
  86 #include "wx/platinfo.h"
  87
  88 // Windows List
  89 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  90
  91 // ----------------------------------------------------------------------------
  92 // static data
  93 // ----------------------------------------------------------------------------
  94
  95 #if defined(__WXPALMOS__)
  96 int wxWindowBase::ms_lastControlId = 32767;
  97 #elif defined(__WXPM__)
  98 int wxWindowBase::ms_lastControlId = 2000;
  99 #else
 100 int wxWindowBase::ms_lastControlId = -200;
 101 #endif
 102
 103 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 104
 105 // ----------------------------------------------------------------------------
 106 // event table
 107 // ----------------------------------------------------------------------------
 108
 109 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 110     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 111     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 112     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 113
 114 #if wxUSE_HELP
 115     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 116 #endif // wxUSE_HELP
 117
 118 END_EVENT_TABLE()
 119
 120 // ============================================================================
 121 // implementation of the common functionality of the wxWindow class
 122 // ============================================================================
 123
 124 // ----------------------------------------------------------------------------
 125 // initialization
 126 // ----------------------------------------------------------------------------
 127
 128 // the default initialization
 129 wxWindowBase::wxWindowBase()
 130 {
 131     // no window yet, no parent nor children
 132     m_parent = (wxWindow *)NULL;
 133     m_windowId = wxID_ANY;
 134
 135     // no constraints on the minimal window size
 136     m_minWidth =
 137     m_maxWidth = wxDefaultCoord;
 138     m_minHeight =
 139     m_maxHeight = wxDefaultCoord;
 140
 141     // invalidiated cache value
 142     m_bestSizeCache = wxDefaultSize;
 143
 144     // window are created enabled and visible by default
 145     m_isShown =
 146     m_isEnabled = true;
 147
 148     // the default event handler is just this window
 149     m_eventHandler = this;
 150
 151 #if wxUSE_VALIDATORS
 152     // no validator
 153     m_windowValidator = (wxValidator *) NULL;
 154 #endif // wxUSE_VALIDATORS
 155
 156     // the colours/fonts are default for now, so leave m_font,
 157     // m_backgroundColour and m_foregroundColour uninitialized and set those
 158     m_hasBgCol =
 159     m_hasFgCol =
 160     m_hasFont = false;
 161     m_inheritBgCol =
 162     m_inheritFgCol =
 163     m_inheritFont = false;
 164
 165     // no style bits
 166     m_exStyle =
 167     m_windowStyle = 0;
 168
 169     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 170
 171 #if wxUSE_CONSTRAINTS
 172     // no constraints whatsoever
 173     m_constraints = (wxLayoutConstraints *) NULL;
 174     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 175 #endif // wxUSE_CONSTRAINTS
 176
 177     m_windowSizer = (wxSizer *) NULL;
 178     m_containingSizer = (wxSizer *) NULL;
 179     m_autoLayout = false;
 180
 181 #if wxUSE_DRAG_AND_DROP
 182     m_dropTarget = (wxDropTarget *)NULL;
 183 #endif // wxUSE_DRAG_AND_DROP
 184
 185 #if wxUSE_TOOLTIPS
 186     m_tooltip = (wxToolTip *)NULL;
 187 #endif // wxUSE_TOOLTIPS
 188
 189 #if wxUSE_CARET
 190     m_caret = (wxCaret *)NULL;
 191 #endif // wxUSE_CARET
 192
 193 #if wxUSE_PALETTE
 194     m_hasCustomPalette = false;
 195 #endif // wxUSE_PALETTE
 196
 197 #if wxUSE_ACCESSIBILITY
 198     m_accessible = NULL;
 199 #endif
 200
 201     m_virtualSize = wxDefaultSize;
 202
 203     m_scrollHelper = (wxScrollHelper *) NULL;
 204
 205     m_minVirtualWidth =
 206     m_maxVirtualWidth = wxDefaultCoord;
 207     m_minVirtualHeight =
 208     m_maxVirtualHeight = wxDefaultCoord;
 209
 210     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 211 #if wxUSE_SYSTEM_OPTIONS
 212     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 213     {
 214        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 215     }
 216 #endif
 217
 218     // Whether we're using the current theme for this window (wxGTK only for now)
 219     m_themeEnabled = false;
 220
 221     // VZ: this one shouldn't exist...
 222     m_isBeingDeleted = false;
 223 }
 224
 225 // common part of window creation process
 226 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 227                               wxWindowID id,
 228                               const wxPoint& WXUNUSED(pos),
 229                               const wxSize& WXUNUSED(size),
 230                               long style,
 231                               const wxValidator& wxVALIDATOR_PARAM(validator),
 232                               const wxString& name)
 233 {
 234 #if wxUSE_STATBOX
 235     // wxGTK doesn't allow to create controls with static box as the parent so
 236     // this will result in a crash when the program is ported to wxGTK so warn
 237     // the user about it
 238
 239     // if you get this assert, the correct solution is to create the controls
 240     // as siblings of the static box
 241     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 242                   _T("wxStaticBox can't be used as a window parent!") );
 243 #endif // wxUSE_STATBOX
 244
 245     // ids are limited to 16 bits under MSW so if you care about portability,
 246     // it's not a good idea to use ids out of this range (and negative ids are
 247     // reserved for wxWidgets own usage)
 248     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 249                   _T("invalid id value") );
 250
 251     // generate a new id if the user doesn't care about it
 252     m_windowId = id == wxID_ANY ? NewControlId() : id;
 253
 254     SetName(name);
 255     SetWindowStyleFlag(style);
 256     SetParent(parent);
 257
 258 #if wxUSE_VALIDATORS
 259     SetValidator(validator);
 260 #endif // wxUSE_VALIDATORS
 261
 262     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 263     // have it too - like this it's possible to set it only in the top level
 264     // dialog/frame and all children will inherit it by defult
 265     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 266     {
 267         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 268     }
 269
 270     return true;
 271 }
 272
 273 // ----------------------------------------------------------------------------
 274 // destruction
 275 // ----------------------------------------------------------------------------
 276
 277 // common clean up
 278 wxWindowBase::~wxWindowBase()
 279 {
 280     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 281
 282     // FIXME if these 2 cases result from programming errors in the user code
 283     //       we should probably assert here instead of silently fixing them
 284
 285     // Just in case the window has been Closed, but we're then deleting
 286     // immediately: don't leave dangling pointers.
 287     wxPendingDelete.DeleteObject(this);
 288
 289     // Just in case we've loaded a top-level window via LoadNativeDialog but
 290     // we weren't a dialog class
 291     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 292
 293     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 294
 295     // reset the top-level parent's default item if it is this widget
 296     if ( m_parent )
 297     {
 298         wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent((wxWindow*)this),
 299                                               wxTopLevelWindow);
 300
 301         if ( tlw && tlw->GetDefaultItem() == this )
 302             tlw->SetDefaultItem(NULL);
 303         if ( tlw && tlw->GetTmpDefaultItem() == this )
 304             tlw->SetTmpDefaultItem(NULL);
 305     }
 306
 307     // reset the dangling pointer our parent window may keep to us
 308     if ( m_parent )
 309     {
 310         m_parent->RemoveChild(this);
 311     }
 312
 313 #if wxUSE_CARET
 314     delete m_caret;
 315 #endif // wxUSE_CARET
 316
 317 #if wxUSE_VALIDATORS
 318     delete m_windowValidator;
 319 #endif // wxUSE_VALIDATORS
 320
 321 #if wxUSE_CONSTRAINTS
 322     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 323     // at deleted windows as they delete themselves.
 324     DeleteRelatedConstraints();
 325
 326     if ( m_constraints )
 327     {
 328         // This removes any dangling pointers to this window in other windows'
 329         // constraintsInvolvedIn lists.
 330         UnsetConstraints(m_constraints);
 331         delete m_constraints;
 332         m_constraints = NULL;
 333     }
 334 #endif // wxUSE_CONSTRAINTS
 335
 336     if ( m_containingSizer )
 337         m_containingSizer->Detach( (wxWindow*)this );
 338
 339     delete m_windowSizer;
 340
 341 #if wxUSE_DRAG_AND_DROP
 342     delete m_dropTarget;
 343 #endif // wxUSE_DRAG_AND_DROP
 344
 345 #if wxUSE_TOOLTIPS
 346     delete m_tooltip;
 347 #endif // wxUSE_TOOLTIPS
 348
 349 #if wxUSE_ACCESSIBILITY
 350     delete m_accessible;
 351 #endif
 352 }
 353
 354 bool wxWindowBase::Destroy()
 355 {
 356     delete this;
 357
 358     return true;
 359 }
 360
 361 bool wxWindowBase::Close(bool force)
 362 {
 363     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 364     event.SetEventObject(this);
 365     event.SetCanVeto(!force);
 366
 367     // return false if window wasn't closed because the application vetoed the
 368     // close event
 369     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 370 }
 371
 372 bool wxWindowBase::DestroyChildren()
 373 {
 374     wxWindowList::compatibility_iterator node;
 375     for ( ;; )
 376     {
 377         // we iterate until the list becomes empty
 378         node = GetChildren().GetFirst();
 379         if ( !node )
 380             break;
 381
 382         wxWindow *child = node->GetData();
 383
 384         // note that we really want to call delete and not ->Destroy() here
 385         // because we want to delete the child immediately, before we are
 386         // deleted, and delayed deletion would result in problems as our (top
 387         // level) child could outlive its parent
 388         delete child;
 389
 390         wxASSERT_MSG( !GetChildren().Find(child),
 391                       wxT("child didn't remove itself using RemoveChild()") );
 392     }
 393
 394     return true;
 395 }
 396
 397 // ----------------------------------------------------------------------------
 398 // size/position related methods
 399 // ----------------------------------------------------------------------------
 400
 401 // centre the window with respect to its parent in either (or both) directions
 402 void wxWindowBase::DoCentre(int dir)
 403 {
 404     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 405                  _T("this method only implements centering child windows") );
 406
 407     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 408 }
 409
 410 // fits the window around the children
 411 void wxWindowBase::Fit()
 412 {
 413     if ( !GetChildren().empty() )
 414     {
 415         SetSize(GetBestSize());
 416     }
 417     //else: do nothing if we have no children
 418 }
 419
 420 // fits virtual size (ie. scrolled area etc.) around children
 421 void wxWindowBase::FitInside()
 422 {
 423     if ( GetChildren().GetCount() > 0 )
 424     {
 425         SetVirtualSize( GetBestVirtualSize() );
 426     }
 427 }
 428
 429 // On Mac, scrollbars are explicitly children.
 430 #ifdef __WXMAC__
 431 static bool wxHasRealChildren(const wxWindowBase* win)
 432 {
 433     int realChildCount = 0;
 434
 435     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 436           node;
 437           node = node->GetNext() )
 438     {
 439         wxWindow *win = node->GetData();
 440         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 441             realChildCount ++;
 442     }
 443     return (realChildCount > 0);
 444 }
 445 #endif
 446
 447 void wxWindowBase::InvalidateBestSize()
 448 {
 449     m_bestSizeCache = wxDefaultSize;
 450
 451     // parent's best size calculation may depend on its children's
 452     // as long as child window we are in is not top level window itself
 453     // (because the TLW size is never resized automatically)
 454     // so let's invalidate it as well to be safe:
 455     if (m_parent && !IsTopLevel())
 456         m_parent->InvalidateBestSize();
 457 }
 458
 459 // return the size best suited for the current window
 460 wxSize wxWindowBase::DoGetBestSize() const
 461 {
 462     wxSize best;
 463
 464     if ( m_windowSizer )
 465     {
 466         best = GetWindowSizeForVirtualSize(m_windowSizer->GetMinSize());
 467     }
 468 #if wxUSE_CONSTRAINTS
 469     else if ( m_constraints )
 470     {
 471         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 472
 473         // our minimal acceptable size is such that all our windows fit inside
 474         int maxX = 0,
 475             maxY = 0;
 476
 477         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 478               node;
 479               node = node->GetNext() )
 480         {
 481             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 482             if ( !c )
 483             {
 484                 // it's not normal that we have an unconstrained child, but
 485                 // what can we do about it?
 486                 continue;
 487             }
 488
 489             int x = c->right.GetValue(),
 490                 y = c->bottom.GetValue();
 491
 492             if ( x > maxX )
 493                 maxX = x;
 494
 495             if ( y > maxY )
 496                 maxY = y;
 497
 498             // TODO: we must calculate the overlaps somehow, otherwise we
 499             //       will never return a size bigger than the current one :-(
 500         }
 501
 502         best = wxSize(maxX, maxY);
 503     }
 504 #endif // wxUSE_CONSTRAINTS
 505     else if ( !GetChildren().empty()
 506 #ifdef __WXMAC__
 507               && wxHasRealChildren(this)
 508 #endif
 509               )
 510     {
 511         // our minimal acceptable size is such that all our visible child
 512         // windows fit inside
 513         int maxX = 0,
 514             maxY = 0;
 515
 516         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 517               node;
 518               node = node->GetNext() )
 519         {
 520             wxWindow *win = node->GetData();
 521             if ( win->IsTopLevel()
 522                     || !win->IsShown()
 523 #if wxUSE_STATUSBAR
 524                         || wxDynamicCast(win, wxStatusBar)
 525 #endif // wxUSE_STATUSBAR
 526                )
 527             {
 528                 // dialogs and frames lie in different top level windows -
 529                 // don't deal with them here; as for the status bars, they
 530                 // don't lie in the client area at all
 531                 continue;
 532             }
 533
 534             int wx, wy, ww, wh;
 535             win->GetPosition(&wx, &wy);
 536
 537             // if the window hadn't been positioned yet, assume that it is in
 538             // the origin
 539             if ( wx == wxDefaultCoord )
 540                 wx = 0;
 541             if ( wy == wxDefaultCoord )
 542                 wy = 0;
 543
 544             win->GetSize(&ww, &wh);
 545             if ( wx + ww > maxX )
 546                 maxX = wx + ww;
 547             if ( wy + wh > maxY )
 548                 maxY = wy + wh;
 549         }
 550
 551         best = wxSize(maxX, maxY);
 552     }
 553     else // ! has children
 554     {
 555         // for a generic window there is no natural best size so, if the
 556         // minimal size is not set, use the current size but take care to
 557         // remember it as minimal size for the next time because our best size
 558         // should be constant: otherwise we could get into a situation when the
 559         // window is initially at some size, then expanded to a larger size and
 560         // then, when the containing window is shrunk back (because our initial
 561         // best size had been used for computing the parent min size), we can't
 562         // be shrunk back any more because our best size is now bigger
 563         wxSize size = GetMinSize();
 564         if ( !size.IsFullySpecified() )
 565         {
 566             size.SetDefaults(GetSize());
 567             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 568         }
 569
 570         // return as-is, unadjusted by the client size difference.
 571         return size;
 572     }
 573
 574     // Add any difference between size and client size
 575     wxSize diff = GetSize() - GetClientSize();
 576     best.x += wxMax(0, diff.x);
 577     best.y += wxMax(0, diff.y);
 578
 579     return best;
 580 }
 581
 582
 583 wxSize wxWindowBase::GetBestFittingSize() const
 584 {
 585     // merge the best size with the min size, giving priority to the min size
 586     wxSize min = GetMinSize();
 587     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 588     {
 589         wxSize best = GetBestSize();
 590         if (min.x == wxDefaultCoord) min.x =  best.x;
 591         if (min.y == wxDefaultCoord) min.y =  best.y;
 592     }
 593     return min;
 594 }
 595
 596
 597 void wxWindowBase::SetBestFittingSize(const wxSize& size)
 598 {
 599     // Set the min size to the size passed in.  This will usually either be
 600     // wxDefaultSize or the size passed to this window's ctor/Create function.
 601     SetMinSize(size);
 602
 603     // Merge the size with the best size if needed
 604     wxSize best = GetBestFittingSize();
 605
 606     // If the current size doesn't match then change it
 607     if (GetSize() != best)
 608         SetSize(best);
 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::DoSetSizeHints(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 == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 626                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || 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 != wxDefaultCoord && m_minVirtualWidth > x )
 692         x = m_minVirtualWidth;
 693     if ( m_maxVirtualWidth != wxDefaultCoord && m_maxVirtualWidth < x )
 694         x = m_maxVirtualWidth;
 695     if ( m_minVirtualHeight != wxDefaultCoord && m_minVirtualHeight > y )
 696         y = m_minVirtualHeight;
 697     if ( m_maxVirtualHeight != wxDefaultCoord && m_maxVirtualHeight < y )
 698         y = m_maxVirtualHeight;
 699
 700     m_virtualSize = wxSize(x, y);
 701 }
 702
 703 wxSize wxWindowBase::DoGetVirtualSize() const
 704 {
 705     // we should use the entire client area so if it is greater than our
 706     // virtual size, expand it to fit (otherwise if the window is big enough we
 707     // wouldn't be using parts of it)
 708     wxSize size = GetClientSize();
 709     if ( m_virtualSize.x > size.x )
 710         size.x = m_virtualSize.x;
 711
 712     if ( m_virtualSize.y >= size.y )
 713         size.y = m_virtualSize.y;
 714
 715     return size;
 716 }
 717
 718 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 719 {
 720     // screen position is the same as (0, 0) in client coords for non TLWs (and
 721     // TLWs override this method)
 722     if ( x )
 723         *x = 0;
 724     if ( y )
 725         *y = 0;
 726
 727     ClientToScreen(x, y);
 728 }
 729
 730 // ----------------------------------------------------------------------------
 731 // show/hide/enable/disable the window
 732 // ----------------------------------------------------------------------------
 733
 734 bool wxWindowBase::Show(bool show)
 735 {
 736     if ( show != m_isShown )
 737     {
 738         m_isShown = show;
 739
 740         return true;
 741     }
 742     else
 743     {
 744         return false;
 745     }
 746 }
 747
 748 bool wxWindowBase::Enable(bool enable)
 749 {
 750     if ( enable != m_isEnabled )
 751     {
 752         m_isEnabled = enable;
 753
 754         return true;
 755     }
 756     else
 757     {
 758         return false;
 759     }
 760 }
 761
 762 bool wxWindowBase::IsShownOnScreen() const
 763 {
 764     return IsShown() &&
 765            (GetParent() == NULL || GetParent()->IsShownOnScreen());
 766 }
 767
 768 // ----------------------------------------------------------------------------
 769 // RTTI
 770 // ----------------------------------------------------------------------------
 771
 772 bool wxWindowBase::IsTopLevel() const
 773 {
 774     return false;
 775 }
 776
 777 // ----------------------------------------------------------------------------
 778 // reparenting the window
 779 // ----------------------------------------------------------------------------
 780
 781 void wxWindowBase::AddChild(wxWindowBase *child)
 782 {
 783     wxCHECK_RET( child, wxT("can't add a NULL child") );
 784
 785     // this should never happen and it will lead to a crash later if it does
 786     // because RemoveChild() will remove only one node from the children list
 787     // and the other(s) one(s) will be left with dangling pointers in them
 788     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 789
 790     GetChildren().Append((wxWindow*)child);
 791     child->SetParent(this);
 792 }
 793
 794 void wxWindowBase::RemoveChild(wxWindowBase *child)
 795 {
 796     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 797
 798     GetChildren().DeleteObject((wxWindow *)child);
 799     child->SetParent(NULL);
 800 }
 801
 802 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 803 {
 804     wxWindow *oldParent = GetParent();
 805     if ( newParent == oldParent )
 806     {
 807         // nothing done
 808         return false;
 809     }
 810
 811     // unlink this window from the existing parent.
 812     if ( oldParent )
 813     {
 814         oldParent->RemoveChild(this);
 815     }
 816     else
 817     {
 818         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 819     }
 820
 821     // add it to the new one
 822     if ( newParent )
 823     {
 824         newParent->AddChild(this);
 825     }
 826     else
 827     {
 828         wxTopLevelWindows.Append((wxWindow *)this);
 829     }
 830
 831     return true;
 832 }
 833
 834 // ----------------------------------------------------------------------------
 835 // event handler stuff
 836 // ----------------------------------------------------------------------------
 837
 838 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 839 {
 840     wxEvtHandler *handlerOld = GetEventHandler();
 841
 842     handler->SetNextHandler(handlerOld);
 843
 844     if ( handlerOld )
 845         GetEventHandler()->SetPreviousHandler(handler);
 846
 847     SetEventHandler(handler);
 848 }
 849
 850 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 851 {
 852     wxEvtHandler *handlerA = GetEventHandler();
 853     if ( handlerA )
 854     {
 855         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 856         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 857
 858         if ( handlerB )
 859             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 860         SetEventHandler(handlerB);
 861
 862         if ( deleteHandler )
 863         {
 864             delete handlerA;
 865             handlerA = (wxEvtHandler *)NULL;
 866         }
 867     }
 868
 869     return handlerA;
 870 }
 871
 872 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 873 {
 874     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 875
 876     wxEvtHandler *handlerPrev = NULL,
 877                  *handlerCur = GetEventHandler();
 878     while ( handlerCur )
 879     {
 880         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 881
 882         if ( handlerCur == handler )
 883         {
 884             if ( handlerPrev )
 885             {
 886                 handlerPrev->SetNextHandler(handlerNext);
 887             }
 888             else
 889             {
 890                 SetEventHandler(handlerNext);
 891             }
 892
 893             if ( handlerNext )
 894             {
 895                 handlerNext->SetPreviousHandler ( handlerPrev );
 896             }
 897
 898             handler->SetNextHandler(NULL);
 899             handler->SetPreviousHandler(NULL);
 900
 901             return true;
 902         }
 903
 904         handlerPrev = handlerCur;
 905         handlerCur = handlerNext;
 906     }
 907
 908     wxFAIL_MSG( _T("where has the event handler gone?") );
 909
 910     return false;
 911 }
 912
 913 // ----------------------------------------------------------------------------
 914 // colours, fonts &c
 915 // ----------------------------------------------------------------------------
 916
 917 void wxWindowBase::InheritAttributes()
 918 {
 919     const wxWindowBase * const parent = GetParent();
 920     if ( !parent )
 921         return;
 922
 923     // we only inherit attributes which had been explicitly set for the parent
 924     // which ensures that this only happens if the user really wants it and
 925     // not by default which wouldn't make any sense in modern GUIs where the
 926     // controls don't all use the same fonts (nor colours)
 927     if ( parent->m_inheritFont && !m_hasFont )
 928         SetFont(parent->GetFont());
 929
 930     // in addition, there is a possibility to explicitly forbid inheriting
 931     // colours at each class level by overriding ShouldInheritColours()
 932     if ( ShouldInheritColours() )
 933     {
 934         if ( parent->m_inheritFgCol && !m_hasFgCol )
 935             SetForegroundColour(parent->GetForegroundColour());
 936
 937         // inheriting (solid) background colour is wrong as it totally breaks
 938         // any kind of themed backgrounds
 939         //
 940         // instead, the controls should use the same background as their parent
 941         // (ideally by not drawing it at all)
 942 #if 0
 943         if ( parent->m_inheritBgCol && !m_hasBgCol )
 944             SetBackgroundColour(parent->GetBackgroundColour());
 945 #endif // 0
 946     }
 947 }
 948
 949 /* static */ wxVisualAttributes
 950 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 951 {
 952     // it is important to return valid values for all attributes from here,
 953     // GetXXX() below rely on this
 954     wxVisualAttributes attrs;
 955     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 956     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 957
 958     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
 959     // the usual background colour than wxSYS_COLOUR_BTNFACE.
 960     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
 961     // colour on other platforms.
 962
 963 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
 964     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 965 #else
 966     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 967 #endif
 968     return attrs;
 969 }
 970
 971 wxColour wxWindowBase::GetBackgroundColour() const
 972 {
 973     if ( !m_backgroundColour.Ok() )
 974     {
 975         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 976
 977         // get our default background colour
 978         wxColour colBg = GetDefaultAttributes().colBg;
 979
 980         // we must return some valid colour to avoid redoing this every time
 981         // and also to avoid surprizing the applications written for older
 982         // wxWidgets versions where GetBackgroundColour() always returned
 983         // something -- so give them something even if it doesn't make sense
 984         // for this window (e.g. it has a themed background)
 985         if ( !colBg.Ok() )
 986             colBg = GetClassDefaultAttributes().colBg;
 987
 988         return colBg;
 989     }
 990     else
 991         return m_backgroundColour;
 992 }
 993
 994 wxColour wxWindowBase::GetForegroundColour() const
 995 {
 996     // logic is the same as above
 997     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 998     {
 999         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
1000
1001         wxColour colFg = GetDefaultAttributes().colFg;
1002
1003         if ( !colFg.Ok() )
1004             colFg = GetClassDefaultAttributes().colFg;
1005
1006         return colFg;
1007     }
1008     else
1009         return m_foregroundColour;
1010 }
1011
1012 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1013 {
1014     if ( colour == m_backgroundColour )
1015         return false;
1016
1017     m_hasBgCol = colour.Ok();
1018     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1019         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1020
1021     m_inheritBgCol = m_hasBgCol;
1022     m_backgroundColour = colour;
1023     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1024     return true;
1025 }
1026
1027 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1028 {
1029     if (colour == m_foregroundColour )
1030         return false;
1031
1032     m_hasFgCol = colour.Ok();
1033     m_inheritFgCol = m_hasFgCol;
1034     m_foregroundColour = colour;
1035     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1036     return true;
1037 }
1038
1039 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1040 {
1041     // setting an invalid cursor is ok, it means that we don't have any special
1042     // cursor
1043     if ( m_cursor == cursor )
1044     {
1045         // no change
1046         return false;
1047     }
1048
1049     m_cursor = cursor;
1050
1051     return true;
1052 }
1053
1054 wxFont wxWindowBase::GetFont() const
1055 {
1056     // logic is the same as in GetBackgroundColour()
1057     if ( !m_font.Ok() )
1058     {
1059         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1060
1061         wxFont font = GetDefaultAttributes().font;
1062         if ( !font.Ok() )
1063             font = GetClassDefaultAttributes().font;
1064
1065         return font;
1066     }
1067     else
1068         return m_font;
1069 }
1070
1071 bool wxWindowBase::SetFont(const wxFont& font)
1072 {
1073     if ( font == m_font )
1074     {
1075         // no change
1076         return false;
1077     }
1078
1079     m_font = font;
1080     m_hasFont = font.Ok();
1081     m_inheritFont = m_hasFont;
1082
1083     InvalidateBestSize();
1084
1085     return true;
1086 }
1087
1088 #if wxUSE_PALETTE
1089
1090 void wxWindowBase::SetPalette(const wxPalette& pal)
1091 {
1092     m_hasCustomPalette = true;
1093     m_palette = pal;
1094
1095     // VZ: can anyone explain me what do we do here?
1096     wxWindowDC d((wxWindow *) this);
1097     d.SetPalette(pal);
1098 }
1099
1100 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1101 {
1102     wxWindow *win = (wxWindow *)this;
1103     while ( win && !win->HasCustomPalette() )
1104     {
1105         win = win->GetParent();
1106     }
1107
1108     return win;
1109 }
1110
1111 #endif // wxUSE_PALETTE
1112
1113 #if wxUSE_CARET
1114 void wxWindowBase::SetCaret(wxCaret *caret)
1115 {
1116     if ( m_caret )
1117     {
1118         delete m_caret;
1119     }
1120
1121     m_caret = caret;
1122
1123     if ( m_caret )
1124     {
1125         wxASSERT_MSG( m_caret->GetWindow() == this,
1126                       wxT("caret should be created associated to this window") );
1127     }
1128 }
1129 #endif // wxUSE_CARET
1130
1131 #if wxUSE_VALIDATORS
1132 // ----------------------------------------------------------------------------
1133 // validators
1134 // ----------------------------------------------------------------------------
1135
1136 void wxWindowBase::SetValidator(const wxValidator& validator)
1137 {
1138     if ( m_windowValidator )
1139         delete m_windowValidator;
1140
1141     m_windowValidator = (wxValidator *)validator.Clone();
1142
1143     if ( m_windowValidator )
1144         m_windowValidator->SetWindow(this);
1145 }
1146 #endif // wxUSE_VALIDATORS
1147
1148 // ----------------------------------------------------------------------------
1149 // update region stuff
1150 // ----------------------------------------------------------------------------
1151
1152 wxRect wxWindowBase::GetUpdateClientRect() const
1153 {
1154     wxRegion rgnUpdate = GetUpdateRegion();
1155     rgnUpdate.Intersect(GetClientRect());
1156     wxRect rectUpdate = rgnUpdate.GetBox();
1157     wxPoint ptOrigin = GetClientAreaOrigin();
1158     rectUpdate.x -= ptOrigin.x;
1159     rectUpdate.y -= ptOrigin.y;
1160
1161     return rectUpdate;
1162 }
1163
1164 bool wxWindowBase::DoIsExposed(int x, int y) const
1165 {
1166     return m_updateRegion.Contains(x, y) != wxOutRegion;
1167 }
1168
1169 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1170 {
1171     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1172 }
1173
1174 void wxWindowBase::ClearBackground()
1175 {
1176     // wxGTK uses its own version, no need to add never used code
1177 #ifndef __WXGTK__
1178     wxClientDC dc((wxWindow *)this);
1179     wxBrush brush(GetBackgroundColour(), wxSOLID);
1180     dc.SetBackground(brush);
1181     dc.Clear();
1182 #endif // __WXGTK__
1183 }
1184
1185 // ----------------------------------------------------------------------------
1186 // find child window by id or name
1187 // ----------------------------------------------------------------------------
1188
1189 wxWindow *wxWindowBase::FindWindow(long id) const
1190 {
1191     if ( id == m_windowId )
1192         return (wxWindow *)this;
1193
1194     wxWindowBase *res = (wxWindow *)NULL;
1195     wxWindowList::compatibility_iterator node;
1196     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1197     {
1198         wxWindowBase *child = node->GetData();
1199         res = child->FindWindow( id );
1200     }
1201
1202     return (wxWindow *)res;
1203 }
1204
1205 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1206 {
1207     if ( name == m_windowName )
1208         return (wxWindow *)this;
1209
1210     wxWindowBase *res = (wxWindow *)NULL;
1211     wxWindowList::compatibility_iterator node;
1212     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1213     {
1214         wxWindow *child = node->GetData();
1215         res = child->FindWindow(name);
1216     }
1217
1218     return (wxWindow *)res;
1219 }
1220
1221
1222 // find any window by id or name or label: If parent is non-NULL, look through
1223 // children for a label or title matching the specified string. If NULL, look
1224 // through all top-level windows.
1225 //
1226 // to avoid duplicating code we reuse the same helper function but with
1227 // different comparators
1228
1229 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1230                                 const wxString& label, long id);
1231
1232 static
1233 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1234                            long WXUNUSED(id))
1235 {
1236     return win->GetLabel() == label;
1237 }
1238
1239 static
1240 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1241                           long WXUNUSED(id))
1242 {
1243     return win->GetName() == label;
1244 }
1245
1246 static
1247 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1248                         long id)
1249 {
1250     return win->GetId() == id;
1251 }
1252
1253 // recursive helper for the FindWindowByXXX() functions
1254 static
1255 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1256                                   const wxString& label,
1257                                   long id,
1258                                   wxFindWindowCmp cmp)
1259 {
1260     if ( parent )
1261     {
1262         // see if this is the one we're looking for
1263         if ( (*cmp)(parent, label, id) )
1264             return (wxWindow *)parent;
1265
1266         // It wasn't, so check all its children
1267         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1268               node;
1269               node = node->GetNext() )
1270         {
1271             // recursively check each child
1272             wxWindow *win = (wxWindow *)node->GetData();
1273             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1274             if (retwin)
1275                 return retwin;
1276         }
1277     }
1278
1279     // Not found
1280     return NULL;
1281 }
1282
1283 // helper for FindWindowByXXX()
1284 static
1285 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1286                              const wxString& label,
1287                              long id,
1288                              wxFindWindowCmp cmp)
1289 {
1290     if ( parent )
1291     {
1292         // just check parent and all its children
1293         return wxFindWindowRecursively(parent, label, id, cmp);
1294     }
1295
1296     // start at very top of wx's windows
1297     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1298           node;
1299           node = node->GetNext() )
1300     {
1301         // recursively check each window & its children
1302         wxWindow *win = node->GetData();
1303         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1304         if (retwin)
1305             return retwin;
1306     }
1307
1308     return NULL;
1309 }
1310
1311 /* static */
1312 wxWindow *
1313 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1314 {
1315     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1316 }
1317
1318 /* static */
1319 wxWindow *
1320 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1321 {
1322     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1323
1324     if ( !win )
1325     {
1326         // fall back to the label
1327         win = FindWindowByLabel(title, parent);
1328     }
1329
1330     return win;
1331 }
1332
1333 /* static */
1334 wxWindow *
1335 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1336 {
1337     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1338 }
1339
1340 // ----------------------------------------------------------------------------
1341 // dialog oriented functions
1342 // ----------------------------------------------------------------------------
1343
1344 void wxWindowBase::MakeModal(bool modal)
1345 {
1346     // Disable all other windows
1347     if ( IsTopLevel() )
1348     {
1349         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1350         while (node)
1351         {
1352             wxWindow *win = node->GetData();
1353             if (win != this)
1354                 win->Enable(!modal);
1355
1356             node = node->GetNext();
1357         }
1358     }
1359 }
1360
1361 bool wxWindowBase::Validate()
1362 {
1363 #if wxUSE_VALIDATORS
1364     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1365
1366     wxWindowList::compatibility_iterator node;
1367     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1368     {
1369         wxWindowBase *child = node->GetData();
1370         wxValidator *validator = child->GetValidator();
1371         if ( validator && !validator->Validate((wxWindow *)this) )
1372         {
1373             return false;
1374         }
1375
1376         if ( recurse && !child->Validate() )
1377         {
1378             return false;
1379         }
1380     }
1381 #endif // wxUSE_VALIDATORS
1382
1383     return true;
1384 }
1385
1386 bool wxWindowBase::TransferDataToWindow()
1387 {
1388 #if wxUSE_VALIDATORS
1389     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1390
1391     wxWindowList::compatibility_iterator node;
1392     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1393     {
1394         wxWindowBase *child = node->GetData();
1395         wxValidator *validator = child->GetValidator();
1396         if ( validator && !validator->TransferToWindow() )
1397         {
1398             wxLogWarning(_("Could not transfer data to window"));
1399 #if wxUSE_LOG
1400             wxLog::FlushActive();
1401 #endif // wxUSE_LOG
1402
1403             return false;
1404         }
1405
1406         if ( recurse )
1407         {
1408             if ( !child->TransferDataToWindow() )
1409             {
1410                 // warning already given
1411                 return false;
1412             }
1413         }
1414     }
1415 #endif // wxUSE_VALIDATORS
1416
1417     return true;
1418 }
1419
1420 bool wxWindowBase::TransferDataFromWindow()
1421 {
1422 #if wxUSE_VALIDATORS
1423     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1424
1425     wxWindowList::compatibility_iterator node;
1426     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1427     {
1428         wxWindow *child = node->GetData();
1429         wxValidator *validator = child->GetValidator();
1430         if ( validator && !validator->TransferFromWindow() )
1431         {
1432             // nop warning here because the application is supposed to give
1433             // one itself - we don't know here what might have gone wrongly
1434
1435             return false;
1436         }
1437
1438         if ( recurse )
1439         {
1440             if ( !child->TransferDataFromWindow() )
1441             {
1442                 // warning already given
1443                 return false;
1444             }
1445         }
1446     }
1447 #endif // wxUSE_VALIDATORS
1448
1449     return true;
1450 }
1451
1452 void wxWindowBase::InitDialog()
1453 {
1454     wxInitDialogEvent event(GetId());
1455     event.SetEventObject( this );
1456     GetEventHandler()->ProcessEvent(event);
1457 }
1458
1459 // ----------------------------------------------------------------------------
1460 // context-sensitive help support
1461 // ----------------------------------------------------------------------------
1462
1463 #if wxUSE_HELP
1464
1465 // associate this help text with this window
1466 void wxWindowBase::SetHelpText(const wxString& text)
1467 {
1468     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1469     if ( helpProvider )
1470     {
1471         helpProvider->AddHelp(this, text);
1472     }
1473 }
1474
1475 // associate this help text with all windows with the same id as this
1476 // one
1477 void wxWindowBase::SetHelpTextForId(const wxString& text)
1478 {
1479     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1480     if ( helpProvider )
1481     {
1482         helpProvider->AddHelp(GetId(), text);
1483     }
1484 }
1485
1486 // get the help string associated with this window (may be empty)
1487 // default implementation forwards calls to the help provider
1488 wxString
1489 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1490                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1491 {
1492     wxString text;
1493     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1494     if ( helpProvider )
1495     {
1496         text = helpProvider->GetHelp(this);
1497     }
1498
1499     return text;
1500 }
1501
1502 // show help for this window
1503 void wxWindowBase::OnHelp(wxHelpEvent& event)
1504 {
1505     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1506     if ( helpProvider )
1507     {
1508         if ( helpProvider->ShowHelpAtPoint(this, event.GetPosition(), event.GetOrigin()) )
1509         {
1510             // skip the event.Skip() below
1511             return;
1512         }
1513     }
1514
1515     event.Skip();
1516 }
1517
1518 #endif // wxUSE_HELP
1519
1520 // ----------------------------------------------------------------------------
1521 // tooltipsroot.Replace("\\", "/");
1522 // ----------------------------------------------------------------------------
1523
1524 #if wxUSE_TOOLTIPS
1525
1526 void wxWindowBase::SetToolTip( const wxString &tip )
1527 {
1528     // don't create the new tooltip if we already have one
1529     if ( m_tooltip )
1530     {
1531         m_tooltip->SetTip( tip );
1532     }
1533     else
1534     {
1535         SetToolTip( new wxToolTip( tip ) );
1536     }
1537
1538     // setting empty tooltip text does not remove the tooltip any more - use
1539     // SetToolTip((wxToolTip *)NULL) for this
1540 }
1541
1542 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1543 {
1544     if ( m_tooltip != tooltip )
1545     {
1546         if ( m_tooltip )
1547             delete m_tooltip;
1548
1549         m_tooltip = tooltip;
1550     }
1551 }
1552
1553 #endif // wxUSE_TOOLTIPS
1554
1555 // ----------------------------------------------------------------------------
1556 // constraints and sizers
1557 // ----------------------------------------------------------------------------
1558
1559 #if wxUSE_CONSTRAINTS
1560
1561 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1562 {
1563     if ( m_constraints )
1564     {
1565         UnsetConstraints(m_constraints);
1566         delete m_constraints;
1567     }
1568     m_constraints = constraints;
1569     if ( m_constraints )
1570     {
1571         // Make sure other windows know they're part of a 'meaningful relationship'
1572         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1573             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1574         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1575             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1576         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1577             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1578         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1579             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1580         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1581             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1582         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1583             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1584         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1585             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1586         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1587             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1588     }
1589 }
1590
1591 // This removes any dangling pointers to this window in other windows'
1592 // constraintsInvolvedIn lists.
1593 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1594 {
1595     if ( c )
1596     {
1597         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1598             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1599         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1600             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1601         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1602             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1603         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1604             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1605         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1606             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1607         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1608             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1609         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1610             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1611         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1612             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1613     }
1614 }
1615
1616 // Back-pointer to other windows we're involved with, so if we delete this
1617 // window, we must delete any constraints we're involved with.
1618 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1619 {
1620     if ( !m_constraintsInvolvedIn )
1621         m_constraintsInvolvedIn = new wxWindowList;
1622     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1623         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1624 }
1625
1626 // REMOVE back-pointer to other windows we're involved with.
1627 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1628 {
1629     if ( m_constraintsInvolvedIn )
1630         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1631 }
1632
1633 // Reset any constraints that mention this window
1634 void wxWindowBase::DeleteRelatedConstraints()
1635 {
1636     if ( m_constraintsInvolvedIn )
1637     {
1638         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1639         while (node)
1640         {
1641             wxWindow *win = node->GetData();
1642             wxLayoutConstraints *constr = win->GetConstraints();
1643
1644             // Reset any constraints involving this window
1645             if ( constr )
1646             {
1647                 constr->left.ResetIfWin(this);
1648                 constr->top.ResetIfWin(this);
1649                 constr->right.ResetIfWin(this);
1650                 constr->bottom.ResetIfWin(this);
1651                 constr->width.ResetIfWin(this);
1652                 constr->height.ResetIfWin(this);
1653                 constr->centreX.ResetIfWin(this);
1654                 constr->centreY.ResetIfWin(this);
1655             }
1656
1657             wxWindowList::compatibility_iterator next = node->GetNext();
1658             m_constraintsInvolvedIn->Erase(node);
1659             node = next;
1660         }
1661
1662         delete m_constraintsInvolvedIn;
1663         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1664     }
1665 }
1666
1667 #endif // wxUSE_CONSTRAINTS
1668
1669 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1670 {
1671     if ( sizer == m_windowSizer)
1672         return;
1673
1674     if ( m_windowSizer )
1675     {
1676         m_windowSizer->SetContainingWindow(NULL);
1677
1678         if ( deleteOld )
1679             delete m_windowSizer;
1680     }
1681
1682     m_windowSizer = sizer;
1683     if ( m_windowSizer )
1684     {
1685         m_windowSizer->SetContainingWindow((wxWindow *)this);
1686     }
1687
1688     SetAutoLayout(m_windowSizer != NULL);
1689 }
1690
1691 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1692 {
1693     SetSizer( sizer, deleteOld );
1694     sizer->SetSizeHints( (wxWindow*) this );
1695 }
1696
1697
1698 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1699 {
1700     // adding a window to a sizer twice is going to result in fatal and
1701     // hard to debug problems later because when deleting the second
1702     // associated wxSizerItem we're going to dereference a dangling
1703     // pointer; so try to detect this as early as possible
1704     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1705                   _T("Adding a window to the same sizer twice?") );
1706
1707     m_containingSizer = sizer;
1708 }
1709
1710 #if wxUSE_CONSTRAINTS
1711
1712 void wxWindowBase::SatisfyConstraints()
1713 {
1714     wxLayoutConstraints *constr = GetConstraints();
1715     bool wasOk = constr && constr->AreSatisfied();
1716
1717     ResetConstraints();   // Mark all constraints as unevaluated
1718
1719     int noChanges = 1;
1720
1721     // if we're a top level panel (i.e. our parent is frame/dialog), our
1722     // own constraints will never be satisfied any more unless we do it
1723     // here
1724     if ( wasOk )
1725     {
1726         while ( noChanges > 0 )
1727         {
1728             LayoutPhase1(&noChanges);
1729         }
1730     }
1731
1732     LayoutPhase2(&noChanges);
1733 }
1734
1735 #endif // wxUSE_CONSTRAINTS
1736
1737 bool wxWindowBase::Layout()
1738 {
1739     // If there is a sizer, use it instead of the constraints
1740     if ( GetSizer() )
1741     {
1742         int w = 0, h = 0;
1743         GetVirtualSize(&w, &h);
1744         GetSizer()->SetDimension( 0, 0, w, h );
1745     }
1746 #if wxUSE_CONSTRAINTS
1747     else
1748     {
1749         SatisfyConstraints(); // Find the right constraints values
1750         SetConstraintSizes(); // Recursively set the real window sizes
1751     }
1752 #endif
1753
1754     return true;
1755 }
1756
1757 #if wxUSE_CONSTRAINTS
1758
1759 // first phase of the constraints evaluation: set our own constraints
1760 bool wxWindowBase::LayoutPhase1(int *noChanges)
1761 {
1762     wxLayoutConstraints *constr = GetConstraints();
1763
1764     return !constr || constr->SatisfyConstraints(this, noChanges);
1765 }
1766
1767 // second phase: set the constraints for our children
1768 bool wxWindowBase::LayoutPhase2(int *noChanges)
1769 {
1770     *noChanges = 0;
1771
1772     // Layout children
1773     DoPhase(1);
1774
1775     // Layout grand children
1776     DoPhase(2);
1777
1778     return true;
1779 }
1780
1781 // Do a phase of evaluating child constraints
1782 bool wxWindowBase::DoPhase(int phase)
1783 {
1784     // the list containing the children for which the constraints are already
1785     // set correctly
1786     wxWindowList succeeded;
1787
1788     // the max number of iterations we loop before concluding that we can't set
1789     // the constraints
1790     static const int maxIterations = 500;
1791
1792     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1793     {
1794         int noChanges = 0;
1795
1796         // loop over all children setting their constraints
1797         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1798               node;
1799               node = node->GetNext() )
1800         {
1801             wxWindow *child = node->GetData();
1802             if ( child->IsTopLevel() )
1803             {
1804                 // top level children are not inside our client area
1805                 continue;
1806             }
1807
1808             if ( !child->GetConstraints() || succeeded.Find(child) )
1809             {
1810                 // this one is either already ok or nothing we can do about it
1811                 continue;
1812             }
1813
1814             int tempNoChanges = 0;
1815             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1816                                       : child->LayoutPhase2(&tempNoChanges);
1817             noChanges += tempNoChanges;
1818
1819             if ( success )
1820             {
1821                 succeeded.Append(child);
1822             }
1823         }
1824
1825         if ( !noChanges )
1826         {
1827             // constraints are set
1828             break;
1829         }
1830     }
1831
1832     return true;
1833 }
1834
1835 void wxWindowBase::ResetConstraints()
1836 {
1837     wxLayoutConstraints *constr = GetConstraints();
1838     if ( constr )
1839     {
1840         constr->left.SetDone(false);
1841         constr->top.SetDone(false);
1842         constr->right.SetDone(false);
1843         constr->bottom.SetDone(false);
1844         constr->width.SetDone(false);
1845         constr->height.SetDone(false);
1846         constr->centreX.SetDone(false);
1847         constr->centreY.SetDone(false);
1848     }
1849
1850     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1851     while (node)
1852     {
1853         wxWindow *win = node->GetData();
1854         if ( !win->IsTopLevel() )
1855             win->ResetConstraints();
1856         node = node->GetNext();
1857     }
1858 }
1859
1860 // Need to distinguish between setting the 'fake' size for windows and sizers,
1861 // and setting the real values.
1862 void wxWindowBase::SetConstraintSizes(bool recurse)
1863 {
1864     wxLayoutConstraints *constr = GetConstraints();
1865     if ( constr && constr->AreSatisfied() )
1866     {
1867         int x = constr->left.GetValue();
1868         int y = constr->top.GetValue();
1869         int w = constr->width.GetValue();
1870         int h = constr->height.GetValue();
1871
1872         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1873              (constr->height.GetRelationship() != wxAsIs) )
1874         {
1875             SetSize(x, y, w, h);
1876         }
1877         else
1878         {
1879             // If we don't want to resize this window, just move it...
1880             Move(x, y);
1881         }
1882     }
1883     else if ( constr )
1884     {
1885         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1886                    GetClassInfo()->GetClassName(),
1887                    GetName().c_str());
1888     }
1889
1890     if ( recurse )
1891     {
1892         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1893         while (node)
1894         {
1895             wxWindow *win = node->GetData();
1896             if ( !win->IsTopLevel() && win->GetConstraints() )
1897                 win->SetConstraintSizes();
1898             node = node->GetNext();
1899         }
1900     }
1901 }
1902
1903 // Only set the size/position of the constraint (if any)
1904 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1905 {
1906     wxLayoutConstraints *constr = GetConstraints();
1907     if ( constr )
1908     {
1909         if ( x != wxDefaultCoord )
1910         {
1911             constr->left.SetValue(x);
1912             constr->left.SetDone(true);
1913         }
1914         if ( y != wxDefaultCoord )
1915         {
1916             constr->top.SetValue(y);
1917             constr->top.SetDone(true);
1918         }
1919         if ( w != wxDefaultCoord )
1920         {
1921             constr->width.SetValue(w);
1922             constr->width.SetDone(true);
1923         }
1924         if ( h != wxDefaultCoord )
1925         {
1926             constr->height.SetValue(h);
1927             constr->height.SetDone(true);
1928         }
1929     }
1930 }
1931
1932 void wxWindowBase::MoveConstraint(int x, int y)
1933 {
1934     wxLayoutConstraints *constr = GetConstraints();
1935     if ( constr )
1936     {
1937         if ( x != wxDefaultCoord )
1938         {
1939             constr->left.SetValue(x);
1940             constr->left.SetDone(true);
1941         }
1942         if ( y != wxDefaultCoord )
1943         {
1944             constr->top.SetValue(y);
1945             constr->top.SetDone(true);
1946         }
1947     }
1948 }
1949
1950 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1951 {
1952     wxLayoutConstraints *constr = GetConstraints();
1953     if ( constr )
1954     {
1955         *w = constr->width.GetValue();
1956         *h = constr->height.GetValue();
1957     }
1958     else
1959         GetSize(w, h);
1960 }
1961
1962 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1963 {
1964     wxLayoutConstraints *constr = GetConstraints();
1965     if ( constr )
1966     {
1967         *w = constr->width.GetValue();
1968         *h = constr->height.GetValue();
1969     }
1970     else
1971         GetClientSize(w, h);
1972 }
1973
1974 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1975 {
1976     wxLayoutConstraints *constr = GetConstraints();
1977     if ( constr )
1978     {
1979         *x = constr->left.GetValue();
1980         *y = constr->top.GetValue();
1981     }
1982     else
1983         GetPosition(x, y);
1984 }
1985
1986 #endif // wxUSE_CONSTRAINTS
1987
1988 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1989 {
1990     // don't do it for the dialogs/frames - they float independently of their
1991     // parent
1992     if ( !IsTopLevel() )
1993     {
1994         wxWindow *parent = GetParent();
1995         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1996         {
1997             wxPoint pt(parent->GetClientAreaOrigin());
1998             x += pt.x;
1999             y += pt.y;
2000         }
2001     }
2002 }
2003
2004 // ----------------------------------------------------------------------------
2005 // do Update UI processing for child controls
2006 // ----------------------------------------------------------------------------
2007
2008 void wxWindowBase::UpdateWindowUI(long flags)
2009 {
2010     wxUpdateUIEvent event(GetId());
2011     event.SetEventObject(this);
2012
2013     if ( GetEventHandler()->ProcessEvent(event) )
2014     {
2015         DoUpdateWindowUI(event);
2016     }
2017
2018     if (flags & wxUPDATE_UI_RECURSE)
2019     {
2020         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2021         while (node)
2022         {
2023             wxWindow* child = (wxWindow*) node->GetData();
2024             child->UpdateWindowUI(flags);
2025             node = node->GetNext();
2026         }
2027     }
2028 }
2029
2030 // do the window-specific processing after processing the update event
2031 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2032 {
2033     if ( event.GetSetEnabled() )
2034         Enable(event.GetEnabled());
2035
2036     if ( event.GetSetShown() )
2037         Show(event.GetShown());
2038 }
2039
2040 #if 0
2041 // call internal idle recursively
2042 // may be obsolete (wait until OnIdle scheme stabilises)
2043 void wxWindowBase::ProcessInternalIdle()
2044 {
2045     OnInternalIdle();
2046
2047     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2048     while (node)
2049     {
2050         wxWindow *child = node->GetData();
2051         child->ProcessInternalIdle();
2052         node = node->GetNext();
2053     }
2054 }
2055 #endif
2056
2057 // ----------------------------------------------------------------------------
2058 // dialog units translations
2059 // ----------------------------------------------------------------------------
2060
2061 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2062 {
2063     int charWidth = GetCharWidth();
2064     int charHeight = GetCharHeight();
2065     wxPoint pt2 = wxDefaultPosition;
2066     if (pt.x != wxDefaultCoord)
2067         pt2.x = (int) ((pt.x * 4) / charWidth);
2068     if (pt.y != wxDefaultCoord)
2069         pt2.y = (int) ((pt.y * 8) / charHeight);
2070
2071     return pt2;
2072 }
2073
2074 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2075 {
2076     int charWidth = GetCharWidth();
2077     int charHeight = GetCharHeight();
2078     wxPoint pt2 = wxDefaultPosition;
2079     if (pt.x != wxDefaultCoord)
2080         pt2.x = (int) ((pt.x * charWidth) / 4);
2081     if (pt.y != wxDefaultCoord)
2082         pt2.y = (int) ((pt.y * charHeight) / 8);
2083
2084     return pt2;
2085 }
2086
2087 // ----------------------------------------------------------------------------
2088 // event handlers
2089 // ----------------------------------------------------------------------------
2090
2091 // propagate the colour change event to the subwindows
2092 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2093 {
2094     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2095     while ( node )
2096     {
2097         // Only propagate to non-top-level windows
2098         wxWindow *win = node->GetData();
2099         if ( !win->IsTopLevel() )
2100         {
2101             wxSysColourChangedEvent event2;
2102             event.SetEventObject(win);
2103             win->GetEventHandler()->ProcessEvent(event2);
2104         }
2105
2106         node = node->GetNext();
2107     }
2108
2109     Refresh();
2110 }
2111
2112 // the default action is to populate dialog with data when it's created,
2113 // and nudge the UI into displaying itself correctly in case
2114 // we've turned the wxUpdateUIEvents frequency down low.
2115 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2116 {
2117     TransferDataToWindow();
2118
2119     // Update the UI at this point
2120     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2121 }
2122
2123 // methods for drawing the sizers in a visible way
2124 #ifdef __WXDEBUG__
2125
2126 static void DrawSizers(wxWindowBase *win);
2127
2128 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2129 {
2130     wxClientDC dc((wxWindow *)win);
2131     dc.SetPen(*wxRED_PEN);
2132     dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
2133     dc.DrawRectangle(rect.Deflate(1, 1));
2134 }
2135
2136 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2137 {
2138     const wxSizerItemList& items = sizer->GetChildren();
2139     for ( wxSizerItemList::const_iterator i = items.begin(),
2140                                         end = items.end();
2141           i != end;
2142           ++i )
2143     {
2144         wxSizerItem *item = *i;
2145         if ( item->IsSizer() )
2146         {
2147             DrawBorder(win, item->GetRect().Deflate(2));
2148             DrawSizer(win, item->GetSizer());
2149         }
2150         else if ( item->IsSpacer() )
2151         {
2152             DrawBorder(win, item->GetRect().Deflate(2), true);
2153         }
2154         else if ( item->IsWindow() )
2155         {
2156             DrawSizers(item->GetWindow());
2157         }
2158     }
2159 }
2160
2161 static void DrawSizers(wxWindowBase *win)
2162 {
2163     wxSizer *sizer = win->GetSizer();
2164     if ( sizer )
2165     {
2166         DrawBorder(win, win->GetClientSize());
2167         DrawSizer(win, sizer);
2168     }
2169     else // no sizer, still recurse into the children
2170     {
2171         const wxWindowList& children = win->GetChildren();
2172         for ( wxWindowList::const_iterator i = children.begin(),
2173                                          end = children.end();
2174               i != end;
2175               ++i )
2176         {
2177             DrawSizers(*i);
2178         }
2179     }
2180 }
2181
2182 #endif // __WXDEBUG__
2183
2184 // process special middle clicks
2185 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2186 {
2187     if ( event.ControlDown() && event.AltDown() )
2188     {
2189 #ifdef __WXDEBUG__
2190         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2191         if ( event.ShiftDown() )
2192         {
2193             DrawSizers(this);
2194             return;
2195         }
2196 #endif // __WXDEBUG__
2197
2198 #if wxUSE_MSGDLG
2199         // don't translate these strings, they're for diagnostics purposes only
2200         wxString msg;
2201         msg.Printf(_T("wxWidgets Library (%s port)\n")
2202                    _T("Version %d.%d.%d%s%s, compiled at %s %s%s\n")
2203                    _T("Copyright (c) 1995-2006 wxWidgets team"),
2204                    wxPlatformInfo().GetPortIdName().c_str(),
2205                    wxMAJOR_VERSION,
2206                    wxMINOR_VERSION,
2207                    wxRELEASE_NUMBER,
2208 #if wxUSE_UNICODE
2209                    L" (Unicode)",
2210 #else
2211                    wxEmptyString,
2212 #endif
2213 #ifdef __WXDEBUG__
2214                    _T(" Debug build"),
2215 #else
2216                    wxEmptyString,
2217 #endif
2218                    __TDATE__,
2219                    __TTIME__,
2220 #ifdef __WXGTK__
2221                    wxString::Format(_T("\nagainst GTK+ %d.%d.%d. Runtime GTK+ version: %d.%d.%d"), GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION, gtk_major_version, gtk_minor_version, gtk_micro_version).c_str()
2222 #else
2223                    wxEmptyString
2224 #endif
2225                    );
2226
2227         wxMessageBox(msg, _T("wxWidgets information"),
2228                      wxICON_INFORMATION | wxOK,
2229                      (wxWindow *)this);
2230     }
2231     else
2232 #endif // wxUSE_MSGDLG
2233     {
2234         event.Skip();
2235     }
2236 }
2237
2238 // ----------------------------------------------------------------------------
2239 // accessibility
2240 // ----------------------------------------------------------------------------
2241
2242 #if wxUSE_ACCESSIBILITY
2243 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2244 {
2245     if (m_accessible && (accessible != m_accessible))
2246         delete m_accessible;
2247     m_accessible = accessible;
2248     if (m_accessible)
2249         m_accessible->SetWindow((wxWindow*) this);
2250 }
2251
2252 // Returns the accessible object, creating if necessary.
2253 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2254 {
2255     if (!m_accessible)
2256         m_accessible = CreateAccessible();
2257     return m_accessible;
2258 }
2259
2260 // Override to create a specific accessible object.
2261 wxAccessible* wxWindowBase::CreateAccessible()
2262 {
2263     return new wxWindowAccessible((wxWindow*) this);
2264 }
2265
2266 #endif
2267
2268 // ----------------------------------------------------------------------------
2269 // list classes implementation
2270 // ----------------------------------------------------------------------------
2271
2272 #if wxUSE_STL
2273
2274 #include "wx/listimpl.cpp"
2275 WX_DEFINE_LIST(wxWindowList)
2276
2277 #else
2278
2279 void wxWindowListNode::DeleteData()
2280 {
2281     delete (wxWindow *)GetData();
2282 }
2283
2284 #endif
2285
2286 // ----------------------------------------------------------------------------
2287 // borders
2288 // ----------------------------------------------------------------------------
2289
2290 wxBorder wxWindowBase::GetBorder(long flags) const
2291 {
2292     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2293     if ( border == wxBORDER_DEFAULT )
2294     {
2295         border = GetDefaultBorder();
2296     }
2297
2298     return border;
2299 }
2300
2301 wxBorder wxWindowBase::GetDefaultBorder() const
2302 {
2303     return wxBORDER_NONE;
2304 }
2305
2306 // ----------------------------------------------------------------------------
2307 // hit testing
2308 // ----------------------------------------------------------------------------
2309
2310 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2311 {
2312     // here we just check if the point is inside the window or not
2313
2314     // check the top and left border first
2315     bool outside = x < 0 || y < 0;
2316     if ( !outside )
2317     {
2318         // check the right and bottom borders too
2319         wxSize size = GetSize();
2320         outside = x >= size.x || y >= size.y;
2321     }
2322
2323     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2324 }
2325
2326 // ----------------------------------------------------------------------------
2327 // mouse capture
2328 // ----------------------------------------------------------------------------
2329
2330 struct WXDLLEXPORT wxWindowNext
2331 {
2332     wxWindow *win;
2333     wxWindowNext *next;
2334 } *wxWindowBase::ms_winCaptureNext = NULL;
2335 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2336 bool wxWindowBase::ms_winCaptureChanging = false;
2337
2338 void wxWindowBase::CaptureMouse()
2339 {
2340     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2341
2342     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2343
2344     ms_winCaptureChanging = true;
2345
2346     wxWindow *winOld = GetCapture();
2347     if ( winOld )
2348     {
2349         ((wxWindowBase*) winOld)->DoReleaseMouse();
2350
2351         // save it on stack
2352         wxWindowNext *item = new wxWindowNext;
2353         item->win = winOld;
2354         item->next = ms_winCaptureNext;
2355         ms_winCaptureNext = item;
2356     }
2357     //else: no mouse capture to save
2358
2359     DoCaptureMouse();
2360     ms_winCaptureCurrent = (wxWindow*)this;
2361
2362     ms_winCaptureChanging = false;
2363 }
2364
2365 void wxWindowBase::ReleaseMouse()
2366 {
2367     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2368
2369     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2370
2371     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2372
2373     ms_winCaptureChanging = true;
2374
2375     DoReleaseMouse();
2376     ms_winCaptureCurrent = NULL;
2377
2378     if ( ms_winCaptureNext )
2379     {
2380         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2381         ms_winCaptureCurrent = ms_winCaptureNext->win;
2382
2383         wxWindowNext *item = ms_winCaptureNext;
2384         ms_winCaptureNext = item->next;
2385         delete item;
2386     }
2387     //else: stack is empty, no previous capture
2388
2389     ms_winCaptureChanging = false;
2390
2391     wxLogTrace(_T("mousecapture"),
2392         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2393         wx_static_cast(void*, GetCapture()));
2394 }
2395
2396 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2397 {
2398     wxMouseCaptureLostEvent event(win->GetId());
2399     event.SetEventObject(win);
2400     if ( !win->GetEventHandler()->ProcessEvent(event) )
2401     {
2402         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2403     }
2404 }
2405
2406 /* static */
2407 void wxWindowBase::NotifyCaptureLost()
2408 {
2409     // don't do anything if capture lost was expected, i.e. resulted from
2410     // a wx call to ReleaseMouse or CaptureMouse:
2411     if ( ms_winCaptureChanging )
2412         return;
2413
2414     // if the capture was lost unexpectedly, notify every window that has
2415     // capture (on stack or current) about it and clear the stack:
2416
2417     if ( ms_winCaptureCurrent )
2418     {
2419         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2420         ms_winCaptureCurrent = NULL;
2421     }
2422
2423     while ( ms_winCaptureNext )
2424     {
2425         wxWindowNext *item = ms_winCaptureNext;
2426         ms_winCaptureNext = item->next;
2427
2428         DoNotifyWindowAboutCaptureLost(item->win);
2429
2430         delete item;
2431     }
2432 }
2433
2434 #if wxUSE_HOTKEY
2435
2436 bool
2437 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2438                              int WXUNUSED(modifiers),
2439                              int WXUNUSED(keycode))
2440 {
2441     // not implemented
2442     return false;
2443 }
2444
2445 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2446 {
2447     // not implemented
2448     return false;
2449 }
2450
2451 #endif // wxUSE_HOTKEY
2452
2453 void wxWindowBase::SendDestroyEvent()
2454 {
2455     wxWindowDestroyEvent event;
2456     event.SetEventObject(this);
2457     event.SetId(GetId());
2458     GetEventHandler()->ProcessEvent(event);
2459 }
2460
2461 // ----------------------------------------------------------------------------
2462 // event processing
2463 // ----------------------------------------------------------------------------
2464
2465 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2466 {
2467 #if wxUSE_VALIDATORS
2468     // Can only use the validator of the window which
2469     // is receiving the event
2470     if ( event.GetEventObject() == this )
2471     {
2472         wxValidator *validator = GetValidator();
2473         if ( validator && validator->ProcessEvent(event) )
2474         {
2475             return true;
2476         }
2477     }
2478 #endif // wxUSE_VALIDATORS
2479
2480     return false;
2481 }
2482
2483 bool wxWindowBase::TryParent(wxEvent& event)
2484 {
2485     // carry on up the parent-child hierarchy if the propagation count hasn't
2486     // reached zero yet
2487     if ( event.ShouldPropagate() )
2488     {
2489         // honour the requests to stop propagation at this window: this is
2490         // used by the dialogs, for example, to prevent processing the events
2491         // from the dialog controls in the parent frame which rarely, if ever,
2492         // makes sense
2493         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2494         {
2495             wxWindow *parent = GetParent();
2496             if ( parent && !parent->IsBeingDeleted() )
2497             {
2498                 wxPropagateOnce propagateOnce(event);
2499
2500                 return parent->GetEventHandler()->ProcessEvent(event);
2501             }
2502         }
2503     }
2504
2505     return wxEvtHandler::TryParent(event);
2506 }
2507
2508 // ----------------------------------------------------------------------------
2509 // keyboard navigation
2510 // ----------------------------------------------------------------------------
2511
2512 // Navigates in the specified direction.
2513 bool wxWindowBase::Navigate(int flags)
2514 {
2515     wxNavigationKeyEvent eventNav;
2516     eventNav.SetFlags(flags);
2517     eventNav.SetEventObject(this);
2518     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2519     {
2520         return true;
2521     }
2522     return false;
2523 }
2524
2525 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, MoveKind move)
2526 {
2527     // check that we're not a top level window
2528     wxCHECK_RET( GetParent(),
2529                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2530
2531     // detect the special case when we have nothing to do anyhow and when the
2532     // code below wouldn't work
2533     if ( win == this )
2534         return;
2535
2536     // find the target window in the siblings list
2537     wxWindowList& siblings = GetParent()->GetChildren();
2538     wxWindowList::compatibility_iterator i = siblings.Find(win);
2539     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2540
2541     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2542     // can't just move the node around
2543     wxWindow *self = (wxWindow *)this;
2544     siblings.DeleteObject(self);
2545     if ( move == MoveAfter )
2546     {
2547         i = i->GetNext();
2548     }
2549
2550     if ( i )
2551     {
2552         siblings.Insert(i, self);
2553     }
2554     else // MoveAfter and win was the last sibling
2555     {
2556         siblings.Append(self);
2557     }
2558 }
2559
2560 // ----------------------------------------------------------------------------
2561 // focus handling
2562 // ----------------------------------------------------------------------------
2563
2564 /*static*/ wxWindow* wxWindowBase::FindFocus()
2565 {
2566     wxWindowBase *win = DoFindFocus();
2567     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2568 }
2569
2570 // ----------------------------------------------------------------------------
2571 // global functions
2572 // ----------------------------------------------------------------------------
2573
2574 wxWindow* wxGetTopLevelParent(wxWindow *win)
2575 {
2576     while ( win && !win->IsTopLevel() )
2577          win = win->GetParent();
2578
2579     return win;
2580 }
2581
2582 #if wxUSE_ACCESSIBILITY
2583 // ----------------------------------------------------------------------------
2584 // accessible object for windows
2585 // ----------------------------------------------------------------------------
2586
2587 // Can return either a child object, or an integer
2588 // representing the child element, starting from 1.
2589 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2590 {
2591     wxASSERT( GetWindow() != NULL );
2592     if (!GetWindow())
2593         return wxACC_FAIL;
2594
2595     return wxACC_NOT_IMPLEMENTED;
2596 }
2597
2598 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2599 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2600 {
2601     wxASSERT( GetWindow() != NULL );
2602     if (!GetWindow())
2603         return wxACC_FAIL;
2604
2605     wxWindow* win = NULL;
2606     if (elementId == 0)
2607     {
2608         win = GetWindow();
2609     }
2610     else
2611     {
2612         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2613         {
2614             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2615         }
2616         else
2617             return wxACC_FAIL;
2618     }
2619     if (win)
2620     {
2621         rect = win->GetRect();
2622         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2623             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2624         return wxACC_OK;
2625     }
2626
2627     return wxACC_NOT_IMPLEMENTED;
2628 }
2629
2630 // Navigates from fromId to toId/toObject.
2631 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2632                              int* WXUNUSED(toId), wxAccessible** toObject)
2633 {
2634     wxASSERT( GetWindow() != NULL );
2635     if (!GetWindow())
2636         return wxACC_FAIL;
2637
2638     switch (navDir)
2639     {
2640     case wxNAVDIR_FIRSTCHILD:
2641         {
2642             if (GetWindow()->GetChildren().GetCount() == 0)
2643                 return wxACC_FALSE;
2644             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2645             *toObject = childWindow->GetOrCreateAccessible();
2646
2647             return wxACC_OK;
2648         }
2649     case wxNAVDIR_LASTCHILD:
2650         {
2651             if (GetWindow()->GetChildren().GetCount() == 0)
2652                 return wxACC_FALSE;
2653             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2654             *toObject = childWindow->GetOrCreateAccessible();
2655
2656             return wxACC_OK;
2657         }
2658     case wxNAVDIR_RIGHT:
2659     case wxNAVDIR_DOWN:
2660     case wxNAVDIR_NEXT:
2661         {
2662             wxWindowList::compatibility_iterator node =
2663                 wxWindowList::compatibility_iterator();
2664             if (fromId == 0)
2665             {
2666                 // Can't navigate to sibling of this window
2667                 // if we're a top-level window.
2668                 if (!GetWindow()->GetParent())
2669                     return wxACC_NOT_IMPLEMENTED;
2670
2671                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2672             }
2673             else
2674             {
2675                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2676                     node = GetWindow()->GetChildren().Item(fromId-1);
2677             }
2678
2679             if (node && node->GetNext())
2680             {
2681                 wxWindow* nextWindow = node->GetNext()->GetData();
2682                 *toObject = nextWindow->GetOrCreateAccessible();
2683                 return wxACC_OK;
2684             }
2685             else
2686                 return wxACC_FALSE;
2687         }
2688     case wxNAVDIR_LEFT:
2689     case wxNAVDIR_UP:
2690     case wxNAVDIR_PREVIOUS:
2691         {
2692             wxWindowList::compatibility_iterator node =
2693                 wxWindowList::compatibility_iterator();
2694             if (fromId == 0)
2695             {
2696                 // Can't navigate to sibling of this window
2697                 // if we're a top-level window.
2698                 if (!GetWindow()->GetParent())
2699                     return wxACC_NOT_IMPLEMENTED;
2700
2701                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2702             }
2703             else
2704             {
2705                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2706                     node = GetWindow()->GetChildren().Item(fromId-1);
2707             }
2708
2709             if (node && node->GetPrevious())
2710             {
2711                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2712                 *toObject = previousWindow->GetOrCreateAccessible();
2713                 return wxACC_OK;
2714             }
2715             else
2716                 return wxACC_FALSE;
2717         }
2718     }
2719
2720     return wxACC_NOT_IMPLEMENTED;
2721 }
2722
2723 // Gets the name of the specified object.
2724 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2725 {
2726     wxASSERT( GetWindow() != NULL );
2727     if (!GetWindow())
2728         return wxACC_FAIL;
2729
2730     wxString title;
2731
2732     // If a child, leave wxWidgets to call the function on the actual
2733     // child object.
2734     if (childId > 0)
2735         return wxACC_NOT_IMPLEMENTED;
2736
2737     // This will eventually be replaced by specialised
2738     // accessible classes, one for each kind of wxWidgets
2739     // control or window.
2740 #if wxUSE_BUTTON
2741     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2742         title = ((wxButton*) GetWindow())->GetLabel();
2743     else
2744 #endif
2745         title = GetWindow()->GetName();
2746
2747     if (!title.empty())
2748     {
2749         *name = title;
2750         return wxACC_OK;
2751     }
2752     else
2753         return wxACC_NOT_IMPLEMENTED;
2754 }
2755
2756 // Gets the number of children.
2757 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2758 {
2759     wxASSERT( GetWindow() != NULL );
2760     if (!GetWindow())
2761         return wxACC_FAIL;
2762
2763     *childId = (int) GetWindow()->GetChildren().GetCount();
2764     return wxACC_OK;
2765 }
2766
2767 // Gets the specified child (starting from 1).
2768 // If *child is NULL and return value is wxACC_OK,
2769 // this means that the child is a simple element and
2770 // not an accessible object.
2771 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2772 {
2773     wxASSERT( GetWindow() != NULL );
2774     if (!GetWindow())
2775         return wxACC_FAIL;
2776
2777     if (childId == 0)
2778     {
2779         *child = this;
2780         return wxACC_OK;
2781     }
2782
2783     if (childId > (int) GetWindow()->GetChildren().GetCount())
2784         return wxACC_FAIL;
2785
2786     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2787     *child = childWindow->GetOrCreateAccessible();
2788     if (*child)
2789         return wxACC_OK;
2790     else
2791         return wxACC_FAIL;
2792 }
2793
2794 // Gets the parent, or NULL.
2795 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2796 {
2797     wxASSERT( GetWindow() != NULL );
2798     if (!GetWindow())
2799         return wxACC_FAIL;
2800
2801     wxWindow* parentWindow = GetWindow()->GetParent();
2802     if (!parentWindow)
2803     {
2804         *parent = NULL;
2805         return wxACC_OK;
2806     }
2807     else
2808     {
2809         *parent = parentWindow->GetOrCreateAccessible();
2810         if (*parent)
2811             return wxACC_OK;
2812         else
2813             return wxACC_FAIL;
2814     }
2815 }
2816
2817 // Performs the default action. childId is 0 (the action for this object)
2818 // or > 0 (the action for a child).
2819 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2820 // window (e.g. an edit control).
2821 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2822 {
2823     wxASSERT( GetWindow() != NULL );
2824     if (!GetWindow())
2825         return wxACC_FAIL;
2826
2827     return wxACC_NOT_IMPLEMENTED;
2828 }
2829
2830 // Gets the default action for this object (0) or > 0 (the action for a child).
2831 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2832 // string if there is no action.
2833 // The retrieved string describes the action that is performed on an object,
2834 // not what the object does as a result. For example, a toolbar button that prints
2835 // a document has a default action of "Press" rather than "Prints the current document."
2836 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2837 {
2838     wxASSERT( GetWindow() != NULL );
2839     if (!GetWindow())
2840         return wxACC_FAIL;
2841
2842     return wxACC_NOT_IMPLEMENTED;
2843 }
2844
2845 // Returns the description for this object or a child.
2846 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2847 {
2848     wxASSERT( GetWindow() != NULL );
2849     if (!GetWindow())
2850         return wxACC_FAIL;
2851
2852     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
2853     if (!ht.empty())
2854     {
2855         *description = ht;
2856         return wxACC_OK;
2857     }
2858     return wxACC_NOT_IMPLEMENTED;
2859 }
2860
2861 // Returns help text for this object or a child, similar to tooltip text.
2862 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2863 {
2864     wxASSERT( GetWindow() != NULL );
2865     if (!GetWindow())
2866         return wxACC_FAIL;
2867
2868     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
2869     if (!ht.empty())
2870     {
2871         *helpText = ht;
2872         return wxACC_OK;
2873     }
2874     return wxACC_NOT_IMPLEMENTED;
2875 }
2876
2877 // Returns the keyboard shortcut for this object or child.
2878 // Return e.g. ALT+K
2879 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2880 {
2881     wxASSERT( GetWindow() != NULL );
2882     if (!GetWindow())
2883         return wxACC_FAIL;
2884
2885     return wxACC_NOT_IMPLEMENTED;
2886 }
2887
2888 // Returns a role constant.
2889 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2890 {
2891     wxASSERT( GetWindow() != NULL );
2892     if (!GetWindow())
2893         return wxACC_FAIL;
2894
2895     // If a child, leave wxWidgets to call the function on the actual
2896     // child object.
2897     if (childId > 0)
2898         return wxACC_NOT_IMPLEMENTED;
2899
2900     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2901         return wxACC_NOT_IMPLEMENTED;
2902 #if wxUSE_STATUSBAR
2903     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2904         return wxACC_NOT_IMPLEMENTED;
2905 #endif
2906 #if wxUSE_TOOLBAR
2907     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2908         return wxACC_NOT_IMPLEMENTED;
2909 #endif
2910
2911     //*role = wxROLE_SYSTEM_CLIENT;
2912     *role = wxROLE_SYSTEM_CLIENT;
2913     return wxACC_OK;
2914
2915     #if 0
2916     return wxACC_NOT_IMPLEMENTED;
2917     #endif
2918 }
2919
2920 // Returns a state constant.
2921 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2922 {
2923     wxASSERT( GetWindow() != NULL );
2924     if (!GetWindow())
2925         return wxACC_FAIL;
2926
2927     // If a child, leave wxWidgets to call the function on the actual
2928     // child object.
2929     if (childId > 0)
2930         return wxACC_NOT_IMPLEMENTED;
2931
2932     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2933         return wxACC_NOT_IMPLEMENTED;
2934
2935 #if wxUSE_STATUSBAR
2936     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2937         return wxACC_NOT_IMPLEMENTED;
2938 #endif
2939 #if wxUSE_TOOLBAR
2940     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2941         return wxACC_NOT_IMPLEMENTED;
2942 #endif
2943
2944     *state = 0;
2945     return wxACC_OK;
2946
2947     #if 0
2948     return wxACC_NOT_IMPLEMENTED;
2949     #endif
2950 }
2951
2952 // Returns a localized string representing the value for the object
2953 // or child.
2954 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2955 {
2956     wxASSERT( GetWindow() != NULL );
2957     if (!GetWindow())
2958         return wxACC_FAIL;
2959
2960     return wxACC_NOT_IMPLEMENTED;
2961 }
2962
2963 // Selects the object or child.
2964 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2965 {
2966     wxASSERT( GetWindow() != NULL );
2967     if (!GetWindow())
2968         return wxACC_FAIL;
2969
2970     return wxACC_NOT_IMPLEMENTED;
2971 }
2972
2973 // Gets the window with the keyboard focus.
2974 // If childId is 0 and child is NULL, no object in
2975 // this subhierarchy has the focus.
2976 // If this object has the focus, child should be 'this'.
2977 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2978 {
2979     wxASSERT( GetWindow() != NULL );
2980     if (!GetWindow())
2981         return wxACC_FAIL;
2982
2983     return wxACC_NOT_IMPLEMENTED;
2984 }
2985
2986 #if wxUSE_VARIANT
2987 // Gets a variant representing the selected children
2988 // of this object.
2989 // Acceptable values:
2990 // - a null variant (IsNull() returns true)
2991 // - a list variant (GetType() == wxT("list")
2992 // - an integer representing the selected child element,
2993 //   or 0 if this object is selected (GetType() == wxT("long")
2994 // - a "void*" pointer to a wxAccessible child object
2995 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2996 {
2997     wxASSERT( GetWindow() != NULL );
2998     if (!GetWindow())
2999         return wxACC_FAIL;
3000
3001     return wxACC_NOT_IMPLEMENTED;
3002 }
3003 #endif // wxUSE_VARIANT
3004
3005 #endif // wxUSE_ACCESSIBILITY
3006
3007 // ----------------------------------------------------------------------------
3008 // RTL support
3009 // ----------------------------------------------------------------------------
3010
3011 wxCoord
3012 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3013                                        wxCoord width,
3014                                        wxCoord widthTotal) const
3015 {
3016     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3017     {
3018         x = widthTotal - x - width;
3019     }
3020
3021     return x;
3022 }
3023