src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  76 // The gtk includes don't pull any other headers in, at least not on my system - MR
  77 #ifdef __WXGTK__
  78     #ifdef __WXGTK20__
  79         #include <gtk/gtkversion.h>
  80     #else
  81         #include <gtk/gtkfeatures.h>
  82     #endif
  83 #endif
  84
  85 #include "wx/platinfo.h"
  86
  87 // Windows List
  88 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  89
  90 // globals
  91 #if wxUSE_MENUS
  92 wxMenu *wxCurrentPopupMenu = NULL;
  93 #endif // wxUSE_MENUS
  94
  95 // ----------------------------------------------------------------------------
  96 // static data
  97 // ----------------------------------------------------------------------------
  98
  99
 100 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 101
 102 // ----------------------------------------------------------------------------
 103 // event table
 104 // ----------------------------------------------------------------------------
 105
 106 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 107     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 108     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 109     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 110
 111 #if wxUSE_HELP
 112     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 113 #endif // wxUSE_HELP
 114
 115 END_EVENT_TABLE()
 116
 117 // ============================================================================
 118 // implementation of the common functionality of the wxWindow class
 119 // ============================================================================
 120
 121 // ----------------------------------------------------------------------------
 122 // initialization
 123 // ----------------------------------------------------------------------------
 124
 125 // the default initialization
 126 wxWindowBase::wxWindowBase()
 127 {
 128     // no window yet, no parent nor children
 129     m_parent = NULL;
 130     m_windowId = wxID_ANY;
 131
 132     // no constraints on the minimal window size
 133     m_minWidth =
 134     m_maxWidth = wxDefaultCoord;
 135     m_minHeight =
 136     m_maxHeight = wxDefaultCoord;
 137
 138     // invalidiated cache value
 139     m_bestSizeCache = wxDefaultSize;
 140
 141     // window are created enabled and visible by default
 142     m_isShown =
 143     m_isEnabled = true;
 144
 145     // the default event handler is just this window
 146     m_eventHandler = this;
 147
 148 #if wxUSE_VALIDATORS
 149     // no validator
 150     m_windowValidator = NULL;
 151 #endif // wxUSE_VALIDATORS
 152
 153     // the colours/fonts are default for now, so leave m_font,
 154     // m_backgroundColour and m_foregroundColour uninitialized and set those
 155     m_hasBgCol =
 156     m_hasFgCol =
 157     m_hasFont = false;
 158     m_inheritBgCol =
 159     m_inheritFgCol =
 160     m_inheritFont = false;
 161
 162     // no style bits
 163     m_exStyle =
 164     m_windowStyle = 0;
 165
 166     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 167
 168 #if wxUSE_CONSTRAINTS
 169     // no constraints whatsoever
 170     m_constraints = NULL;
 171     m_constraintsInvolvedIn = NULL;
 172 #endif // wxUSE_CONSTRAINTS
 173
 174     m_windowSizer = NULL;
 175     m_containingSizer = NULL;
 176     m_autoLayout = false;
 177
 178 #if wxUSE_DRAG_AND_DROP
 179     m_dropTarget = NULL;
 180 #endif // wxUSE_DRAG_AND_DROP
 181
 182 #if wxUSE_TOOLTIPS
 183     m_tooltip = NULL;
 184 #endif // wxUSE_TOOLTIPS
 185
 186 #if wxUSE_CARET
 187     m_caret = NULL;
 188 #endif // wxUSE_CARET
 189
 190 #if wxUSE_PALETTE
 191     m_hasCustomPalette = false;
 192 #endif // wxUSE_PALETTE
 193
 194 #if wxUSE_ACCESSIBILITY
 195     m_accessible = NULL;
 196 #endif
 197
 198     m_virtualSize = wxDefaultSize;
 199
 200     m_scrollHelper = NULL;
 201
 202     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 203 #if wxUSE_SYSTEM_OPTIONS
 204     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 205     {
 206        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 207     }
 208 #endif
 209
 210     // Whether we're using the current theme for this window (wxGTK only for now)
 211     m_themeEnabled = false;
 212
 213     // This is set to true by SendDestroyEvent() which should be called by the
 214     // most derived class to ensure that the destruction event is sent as soon
 215     // as possible to allow its handlers to still see the undestroyed window
 216     m_isBeingDeleted = false;
 217
 218     m_freezeCount = 0;
 219 }
 220
 221 // common part of window creation process
 222 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 223                               wxWindowID id,
 224                               const wxPoint& WXUNUSED(pos),
 225                               const wxSize& WXUNUSED(size),
 226                               long style,
 227                               const wxValidator& wxVALIDATOR_PARAM(validator),
 228                               const wxString& name)
 229 {
 230 #if wxUSE_STATBOX
 231     // wxGTK doesn't allow to create controls with static box as the parent so
 232     // this will result in a crash when the program is ported to wxGTK so warn
 233     // the user about it
 234
 235     // if you get this assert, the correct solution is to create the controls
 236     // as siblings of the static box
 237     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 238                   _T("wxStaticBox can't be used as a window parent!") );
 239 #endif // wxUSE_STATBOX
 240
 241     // ids are limited to 16 bits under MSW so if you care about portability,
 242     // it's not a good idea to use ids out of this range (and negative ids are
 243     // reserved for wxWidgets own usage)
 244     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 245                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 246                   _T("invalid id value") );
 247
 248     // generate a new id if the user doesn't care about it
 249     if ( id == wxID_ANY )
 250     {
 251         m_windowId = NewControlId();
 252     }
 253     else // valid id specified
 254     {
 255         m_windowId = id;
 256     }
 257
 258     // don't use SetWindowStyleFlag() here, this function should only be called
 259     // to change the flag after creation as it tries to reflect the changes in
 260     // flags by updating the window dynamically and we don't need this here
 261     m_windowStyle = style;
 262
 263     SetName(name);
 264     SetParent(parent);
 265
 266 #if wxUSE_VALIDATORS
 267     SetValidator(validator);
 268 #endif // wxUSE_VALIDATORS
 269
 270     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 271     // have it too - like this it's possible to set it only in the top level
 272     // dialog/frame and all children will inherit it by defult
 273     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 274     {
 275         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 276     }
 277
 278     return true;
 279 }
 280
 281 bool wxWindowBase::ToggleWindowStyle(int flag)
 282 {
 283     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 284
 285     bool rc;
 286     long style = GetWindowStyleFlag();
 287     if ( style & flag )
 288     {
 289         style &= ~flag;
 290         rc = false;
 291     }
 292     else // currently off
 293     {
 294         style |= flag;
 295         rc = true;
 296     }
 297
 298     SetWindowStyleFlag(style);
 299
 300     return rc;
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // destruction
 305 // ----------------------------------------------------------------------------
 306
 307 // common clean up
 308 wxWindowBase::~wxWindowBase()
 309 {
 310     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 311
 312     // FIXME if these 2 cases result from programming errors in the user code
 313     //       we should probably assert here instead of silently fixing them
 314
 315     // Just in case the window has been Closed, but we're then deleting
 316     // immediately: don't leave dangling pointers.
 317     wxPendingDelete.DeleteObject(this);
 318
 319     // Just in case we've loaded a top-level window via LoadNativeDialog but
 320     // we weren't a dialog class
 321     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 322
 323 #if wxUSE_MENUS
 324     // The associated popup menu can still be alive, disassociate from it in
 325     // this case
 326     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 327         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 328 #endif // wxUSE_MENUS
 329
 330     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 331
 332     // notify the parent about this window destruction
 333     if ( m_parent )
 334         m_parent->RemoveChild(this);
 335
 336 #if wxUSE_CARET
 337     delete m_caret;
 338 #endif // wxUSE_CARET
 339
 340 #if wxUSE_VALIDATORS
 341     delete m_windowValidator;
 342 #endif // wxUSE_VALIDATORS
 343
 344 #if wxUSE_CONSTRAINTS
 345     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 346     // at deleted windows as they delete themselves.
 347     DeleteRelatedConstraints();
 348
 349     if ( m_constraints )
 350     {
 351         // This removes any dangling pointers to this window in other windows'
 352         // constraintsInvolvedIn lists.
 353         UnsetConstraints(m_constraints);
 354         delete m_constraints;
 355         m_constraints = NULL;
 356     }
 357 #endif // wxUSE_CONSTRAINTS
 358
 359     if ( m_containingSizer )
 360         m_containingSizer->Detach( (wxWindow*)this );
 361
 362     delete m_windowSizer;
 363
 364 #if wxUSE_DRAG_AND_DROP
 365     delete m_dropTarget;
 366 #endif // wxUSE_DRAG_AND_DROP
 367
 368 #if wxUSE_TOOLTIPS
 369     delete m_tooltip;
 370 #endif // wxUSE_TOOLTIPS
 371
 372 #if wxUSE_ACCESSIBILITY
 373     delete m_accessible;
 374 #endif
 375
 376 #if wxUSE_HELP
 377     // NB: this has to be called unconditionally, because we don't know
 378     //     whether this window has associated help text or not
 379     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 380     if ( helpProvider )
 381         helpProvider->RemoveHelp(this);
 382 #endif
 383 }
 384
 385 bool wxWindowBase::IsBeingDeleted() const
 386 {
 387     return m_isBeingDeleted ||
 388             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 389 }
 390
 391 void wxWindowBase::SendDestroyEvent()
 392 {
 393     if ( m_isBeingDeleted )
 394     {
 395         // we could have been already called from a more derived class dtor,
 396         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 397         // should be simply ignored
 398         return;
 399     }
 400
 401     m_isBeingDeleted = true;
 402
 403     wxWindowDestroyEvent event;
 404     event.SetEventObject(this);
 405     event.SetId(GetId());
 406     GetEventHandler()->ProcessEvent(event);
 407 }
 408
 409 bool wxWindowBase::Destroy()
 410 {
 411     SendDestroyEvent();
 412
 413     delete this;
 414
 415     return true;
 416 }
 417
 418 bool wxWindowBase::Close(bool force)
 419 {
 420     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 421     event.SetEventObject(this);
 422     event.SetCanVeto(!force);
 423
 424     // return false if window wasn't closed because the application vetoed the
 425     // close event
 426     return HandleWindowEvent(event) && !event.GetVeto();
 427 }
 428
 429 bool wxWindowBase::DestroyChildren()
 430 {
 431     wxWindowList::compatibility_iterator node;
 432     for ( ;; )
 433     {
 434         // we iterate until the list becomes empty
 435         node = GetChildren().GetFirst();
 436         if ( !node )
 437             break;
 438
 439         wxWindow *child = node->GetData();
 440
 441         // note that we really want to delete it immediately so don't call the
 442         // possible overridden Destroy() version which might not delete the
 443         // child immediately resulting in problems with our (top level) child
 444         // outliving its parent
 445         child->wxWindowBase::Destroy();
 446
 447         wxASSERT_MSG( !GetChildren().Find(child),
 448                       wxT("child didn't remove itself using RemoveChild()") );
 449     }
 450
 451     return true;
 452 }
 453
 454 // ----------------------------------------------------------------------------
 455 // size/position related methods
 456 // ----------------------------------------------------------------------------
 457
 458 // centre the window with respect to its parent in either (or both) directions
 459 void wxWindowBase::DoCentre(int dir)
 460 {
 461     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 462                  _T("this method only implements centering child windows") );
 463
 464     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 465 }
 466
 467 // fits the window around the children
 468 void wxWindowBase::Fit()
 469 {
 470     if ( !GetChildren().empty() )
 471     {
 472         SetSize(GetBestSize());
 473     }
 474     //else: do nothing if we have no children
 475 }
 476
 477 // fits virtual size (ie. scrolled area etc.) around children
 478 void wxWindowBase::FitInside()
 479 {
 480     if ( GetChildren().GetCount() > 0 )
 481     {
 482         SetVirtualSize( GetBestVirtualSize() );
 483     }
 484 }
 485
 486 // On Mac, scrollbars are explicitly children.
 487 #ifdef __WXMAC__
 488 static bool wxHasRealChildren(const wxWindowBase* win)
 489 {
 490     int realChildCount = 0;
 491
 492     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 493           node;
 494           node = node->GetNext() )
 495     {
 496         wxWindow *win = node->GetData();
 497         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 498             realChildCount ++;
 499     }
 500     return (realChildCount > 0);
 501 }
 502 #endif
 503
 504 void wxWindowBase::InvalidateBestSize()
 505 {
 506     m_bestSizeCache = wxDefaultSize;
 507
 508     // parent's best size calculation may depend on its children's
 509     // as long as child window we are in is not top level window itself
 510     // (because the TLW size is never resized automatically)
 511     // so let's invalidate it as well to be safe:
 512     if (m_parent && !IsTopLevel())
 513         m_parent->InvalidateBestSize();
 514 }
 515
 516 // return the size best suited for the current window
 517 wxSize wxWindowBase::DoGetBestSize() const
 518 {
 519     wxSize best;
 520
 521     if ( m_windowSizer )
 522     {
 523         best = m_windowSizer->GetMinSize();
 524     }
 525 #if wxUSE_CONSTRAINTS
 526     else if ( m_constraints )
 527     {
 528         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 529
 530         // our minimal acceptable size is such that all our windows fit inside
 531         int maxX = 0,
 532             maxY = 0;
 533
 534         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 535               node;
 536               node = node->GetNext() )
 537         {
 538             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 539             if ( !c )
 540             {
 541                 // it's not normal that we have an unconstrained child, but
 542                 // what can we do about it?
 543                 continue;
 544             }
 545
 546             int x = c->right.GetValue(),
 547                 y = c->bottom.GetValue();
 548
 549             if ( x > maxX )
 550                 maxX = x;
 551
 552             if ( y > maxY )
 553                 maxY = y;
 554
 555             // TODO: we must calculate the overlaps somehow, otherwise we
 556             //       will never return a size bigger than the current one :-(
 557         }
 558
 559         best = wxSize(maxX, maxY);
 560     }
 561 #endif // wxUSE_CONSTRAINTS
 562     else if ( !GetChildren().empty()
 563 #ifdef __WXMAC__
 564               && wxHasRealChildren(this)
 565 #endif
 566               )
 567     {
 568         // our minimal acceptable size is such that all our visible child
 569         // windows fit inside
 570         int maxX = 0,
 571             maxY = 0;
 572
 573         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 574               node;
 575               node = node->GetNext() )
 576         {
 577             wxWindow *win = node->GetData();
 578             if ( win->IsTopLevel()
 579                     || !win->IsShown()
 580 #if wxUSE_STATUSBAR
 581                         || wxDynamicCast(win, wxStatusBar)
 582 #endif // wxUSE_STATUSBAR
 583                )
 584             {
 585                 // dialogs and frames lie in different top level windows -
 586                 // don't deal with them here; as for the status bars, they
 587                 // don't lie in the client area at all
 588                 continue;
 589             }
 590
 591             int wx, wy, ww, wh;
 592             win->GetPosition(&wx, &wy);
 593
 594             // if the window hadn't been positioned yet, assume that it is in
 595             // the origin
 596             if ( wx == wxDefaultCoord )
 597                 wx = 0;
 598             if ( wy == wxDefaultCoord )
 599                 wy = 0;
 600
 601             win->GetSize(&ww, &wh);
 602             if ( wx + ww > maxX )
 603                 maxX = wx + ww;
 604             if ( wy + wh > maxY )
 605                 maxY = wy + wh;
 606         }
 607
 608         best = wxSize(maxX, maxY);
 609     }
 610     else // ! has children
 611     {
 612         // for a generic window there is no natural best size so, if the
 613         // minimal size is not set, use the current size but take care to
 614         // remember it as minimal size for the next time because our best size
 615         // should be constant: otherwise we could get into a situation when the
 616         // window is initially at some size, then expanded to a larger size and
 617         // then, when the containing window is shrunk back (because our initial
 618         // best size had been used for computing the parent min size), we can't
 619         // be shrunk back any more because our best size is now bigger
 620         wxSize size = GetMinSize();
 621         if ( !size.IsFullySpecified() )
 622         {
 623             size.SetDefaults(GetSize());
 624             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 625         }
 626
 627         // return as-is, unadjusted by the client size difference.
 628         return size;
 629     }
 630
 631     // Add any difference between size and client size
 632     wxSize diff = GetSize() - GetClientSize();
 633     best.x += wxMax(0, diff.x);
 634     best.y += wxMax(0, diff.y);
 635
 636     return best;
 637 }
 638
 639 // helper of GetWindowBorderSize(): as many ports don't implement support for
 640 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 641 // fallbacks in this case
 642 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 643 {
 644     int rc = wxSystemSettings::GetMetric(
 645         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 646     if ( rc == -1 )
 647     {
 648         switch ( what )
 649         {
 650             case wxSYS_BORDER_X:
 651             case wxSYS_BORDER_Y:
 652                 // 2D border is by default 1 pixel wide
 653                 rc = 1;
 654                 break;
 655
 656             case wxSYS_EDGE_X:
 657             case wxSYS_EDGE_Y:
 658                 // 3D borders are by default 2 pixels
 659                 rc = 2;
 660                 break;
 661
 662             default:
 663                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 664                 rc = 0;
 665         }
 666     }
 667
 668     return rc;
 669 }
 670
 671 wxSize wxWindowBase::GetWindowBorderSize() const
 672 {
 673     wxSize size;
 674
 675     switch ( GetBorder() )
 676     {
 677         case wxBORDER_NONE:
 678             // nothing to do, size is already (0, 0)
 679             break;
 680
 681         case wxBORDER_SIMPLE:
 682         case wxBORDER_STATIC:
 683             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 684             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 685             break;
 686
 687         case wxBORDER_SUNKEN:
 688         case wxBORDER_RAISED:
 689             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 690                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 691             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 692                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 693             break;
 694
 695         case wxBORDER_DOUBLE:
 696             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 697                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 698             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 699                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 700             break;
 701
 702         default:
 703             wxFAIL_MSG(_T("Unknown border style."));
 704             break;
 705     }
 706
 707     // we have borders on both sides
 708     return size*2;
 709 }
 710
 711 wxSize wxWindowBase::GetEffectiveMinSize() const
 712 {
 713     // merge the best size with the min size, giving priority to the min size
 714     wxSize min = GetMinSize();
 715
 716     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 717     {
 718         wxSize best = GetBestSize();
 719         if (min.x == wxDefaultCoord) min.x =  best.x;
 720         if (min.y == wxDefaultCoord) min.y =  best.y;
 721     }
 722
 723     return min;
 724 }
 725
 726 wxSize wxWindowBase::GetBestSize() const
 727 {
 728     if ((!m_windowSizer) && (m_bestSizeCache.IsFullySpecified()))
 729         return m_bestSizeCache;
 730
 731     return DoGetBestSize();
 732 }
 733
 734 void wxWindowBase::SetMinSize(const wxSize& minSize)
 735 {
 736     m_minWidth = minSize.x;
 737     m_minHeight = minSize.y;
 738 }
 739
 740 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 741 {
 742     m_maxWidth = maxSize.x;
 743     m_maxHeight = maxSize.y;
 744 }
 745
 746 void wxWindowBase::SetInitialSize(const wxSize& size)
 747 {
 748     // Set the min size to the size passed in.  This will usually either be
 749     // wxDefaultSize or the size passed to this window's ctor/Create function.
 750     SetMinSize(size);
 751
 752     // Merge the size with the best size if needed
 753     wxSize best = GetEffectiveMinSize();
 754
 755     // If the current size doesn't match then change it
 756     if (GetSize() != best)
 757         SetSize(best);
 758 }
 759
 760
 761 // by default the origin is not shifted
 762 wxPoint wxWindowBase::GetClientAreaOrigin() const
 763 {
 764     return wxPoint(0,0);
 765 }
 766
 767 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 768 {
 769     const wxSize diff(GetSize() - GetClientSize());
 770
 771     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 772                   size.y == -1 ? -1 : size.y + diff.y);
 773 }
 774
 775 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 776 {
 777     const wxSize diff(GetSize() - GetClientSize());
 778
 779     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 780                   size.y == -1 ? -1 : size.y - diff.y);
 781 }
 782
 783 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 784 {
 785     if ( m_windowVariant != variant )
 786     {
 787         m_windowVariant = variant;
 788
 789         DoSetWindowVariant(variant);
 790     }
 791 }
 792
 793 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 794 {
 795     // adjust the font height to correspond to our new variant (notice that
 796     // we're only called if something really changed)
 797     wxFont font = GetFont();
 798     int size = font.GetPointSize();
 799     switch ( variant )
 800     {
 801         case wxWINDOW_VARIANT_NORMAL:
 802             break;
 803
 804         case wxWINDOW_VARIANT_SMALL:
 805             size *= 3;
 806             size /= 4;
 807             break;
 808
 809         case wxWINDOW_VARIANT_MINI:
 810             size *= 2;
 811             size /= 3;
 812             break;
 813
 814         case wxWINDOW_VARIANT_LARGE:
 815             size *= 5;
 816             size /= 4;
 817             break;
 818
 819         default:
 820             wxFAIL_MSG(_T("unexpected window variant"));
 821             break;
 822     }
 823
 824     font.SetPointSize(size);
 825     SetFont(font);
 826 }
 827
 828 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 829                                    int maxW, int maxH,
 830                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 831 {
 832     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 833                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 834                  _T("min width/height must be less than max width/height!") );
 835
 836     m_minWidth = minW;
 837     m_maxWidth = maxW;
 838     m_minHeight = minH;
 839     m_maxHeight = maxH;
 840 }
 841
 842
 843 #if WXWIN_COMPATIBILITY_2_8
 844 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 845                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 846 {
 847 }
 848
 849 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 850                                        const wxSize& WXUNUSED(maxsize))
 851 {
 852 }
 853 #endif // WXWIN_COMPATIBILITY_2_8
 854
 855 void wxWindowBase::DoSetVirtualSize( int x, int y )
 856 {
 857     m_virtualSize = wxSize(x, y);
 858 }
 859
 860 wxSize wxWindowBase::DoGetVirtualSize() const
 861 {
 862     // we should use the entire client area so if it is greater than our
 863     // virtual size, expand it to fit (otherwise if the window is big enough we
 864     // wouldn't be using parts of it)
 865     wxSize size = GetClientSize();
 866     if ( m_virtualSize.x > size.x )
 867         size.x = m_virtualSize.x;
 868
 869     if ( m_virtualSize.y >= size.y )
 870         size.y = m_virtualSize.y;
 871
 872     return size;
 873 }
 874
 875 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 876 {
 877     // screen position is the same as (0, 0) in client coords for non TLWs (and
 878     // TLWs override this method)
 879     if ( x )
 880         *x = 0;
 881     if ( y )
 882         *y = 0;
 883
 884     ClientToScreen(x, y);
 885 }
 886
 887 void wxWindowBase::SendSizeEvent(int flags)
 888 {
 889     wxSizeEvent event(GetSize(), GetId());
 890     event.SetEventObject(this);
 891     if ( flags & wxSEND_EVENT_POST )
 892         wxPostEvent(this, event);
 893     else
 894         HandleWindowEvent(event);
 895 }
 896
 897 void wxWindowBase::SendSizeEventToParent(int flags)
 898 {
 899     wxWindow * const parent = GetParent();
 900     if ( parent && !parent->IsBeingDeleted() )
 901         parent->SendSizeEvent(flags);
 902 }
 903
 904 // ----------------------------------------------------------------------------
 905 // show/hide/enable/disable the window
 906 // ----------------------------------------------------------------------------
 907
 908 bool wxWindowBase::Show(bool show)
 909 {
 910     if ( show != m_isShown )
 911     {
 912         m_isShown = show;
 913
 914         return true;
 915     }
 916     else
 917     {
 918         return false;
 919     }
 920 }
 921
 922 bool wxWindowBase::IsEnabled() const
 923 {
 924     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 925 }
 926
 927 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 928 {
 929 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 930     DoEnable(enabled);
 931 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 932
 933     OnEnabled(enabled);
 934
 935     // If we are top-level then the logic doesn't apply - otherwise
 936     // showing a modal dialog would result in total greying out (and ungreying
 937     // out later) of everything which would be really ugly
 938     if ( IsTopLevel() )
 939         return;
 940
 941     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 942           node;
 943           node = node->GetNext() )
 944     {
 945         wxWindowBase * const child = node->GetData();
 946         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 947             child->NotifyWindowOnEnableChange(enabled);
 948     }
 949 }
 950
 951 bool wxWindowBase::Enable(bool enable)
 952 {
 953     if ( enable == IsThisEnabled() )
 954         return false;
 955
 956     m_isEnabled = enable;
 957
 958 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 959     DoEnable(enable);
 960 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 961     wxWindowBase * const parent = GetParent();
 962     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 963     {
 964         return true;
 965     }
 966 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 967
 968     NotifyWindowOnEnableChange(enable);
 969
 970     return true;
 971 }
 972
 973 bool wxWindowBase::IsShownOnScreen() const
 974 {
 975     // A window is shown on screen if it itself is shown and so are all its
 976     // parents. But if a window is toplevel one, then its always visible on
 977     // screen if IsShown() returns true, even if it has a hidden parent.
 978     return IsShown() &&
 979            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 980 }
 981
 982 // ----------------------------------------------------------------------------
 983 // RTTI
 984 // ----------------------------------------------------------------------------
 985
 986 bool wxWindowBase::IsTopLevel() const
 987 {
 988     return false;
 989 }
 990
 991 // ----------------------------------------------------------------------------
 992 // Freeze/Thaw
 993 // ----------------------------------------------------------------------------
 994
 995 void wxWindowBase::Freeze()
 996 {
 997     if ( !m_freezeCount++ )
 998     {
 999         // physically freeze this window:
1000         DoFreeze();
1001
1002         // and recursively freeze all children:
1003         for ( wxWindowList::iterator i = GetChildren().begin();
1004               i != GetChildren().end(); ++i )
1005         {
1006             wxWindow *child = *i;
1007             if ( child->IsTopLevel() )
1008                 continue;
1009
1010             child->Freeze();
1011         }
1012     }
1013 }
1014
1015 void wxWindowBase::Thaw()
1016 {
1017     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1018
1019     if ( !--m_freezeCount )
1020     {
1021         // recursively thaw all children:
1022         for ( wxWindowList::iterator i = GetChildren().begin();
1023               i != GetChildren().end(); ++i )
1024         {
1025             wxWindow *child = *i;
1026             if ( child->IsTopLevel() )
1027                 continue;
1028
1029             child->Thaw();
1030         }
1031
1032         // physically thaw this window:
1033         DoThaw();
1034     }
1035 }
1036
1037 // ----------------------------------------------------------------------------
1038 // reparenting the window
1039 // ----------------------------------------------------------------------------
1040
1041 void wxWindowBase::AddChild(wxWindowBase *child)
1042 {
1043     wxCHECK_RET( child, wxT("can't add a NULL child") );
1044
1045     // this should never happen and it will lead to a crash later if it does
1046     // because RemoveChild() will remove only one node from the children list
1047     // and the other(s) one(s) will be left with dangling pointers in them
1048     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
1049
1050     GetChildren().Append((wxWindow*)child);
1051     child->SetParent(this);
1052
1053     // adding a child while frozen will assert when thawed, so freeze it as if
1054     // it had been already present when we were frozen
1055     if ( IsFrozen() && !child->IsTopLevel() )
1056         child->Freeze();
1057 }
1058
1059 void wxWindowBase::RemoveChild(wxWindowBase *child)
1060 {
1061     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1062
1063     // removing a child while frozen may result in permanently frozen window
1064     // if used e.g. from Reparent(), so thaw it
1065     //
1066     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1067     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1068     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1069         child->Thaw();
1070
1071     GetChildren().DeleteObject((wxWindow *)child);
1072     child->SetParent(NULL);
1073 }
1074
1075 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1076 {
1077     wxWindow *oldParent = GetParent();
1078     if ( newParent == oldParent )
1079     {
1080         // nothing done
1081         return false;
1082     }
1083
1084     const bool oldEnabledState = IsEnabled();
1085
1086     // unlink this window from the existing parent.
1087     if ( oldParent )
1088     {
1089         oldParent->RemoveChild(this);
1090     }
1091     else
1092     {
1093         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1094     }
1095
1096     // add it to the new one
1097     if ( newParent )
1098     {
1099         newParent->AddChild(this);
1100     }
1101     else
1102     {
1103         wxTopLevelWindows.Append((wxWindow *)this);
1104     }
1105
1106     // We need to notify window (and its subwindows) if by changing the parent
1107     // we also change our enabled/disabled status.
1108     const bool newEnabledState = IsEnabled();
1109     if ( newEnabledState != oldEnabledState )
1110     {
1111         NotifyWindowOnEnableChange(newEnabledState);
1112     }
1113
1114     return true;
1115 }
1116
1117 // ----------------------------------------------------------------------------
1118 // event handler stuff
1119 // ----------------------------------------------------------------------------
1120
1121 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1122 {
1123     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1124
1125     m_eventHandler = handler;
1126 }
1127
1128 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1129 {
1130     // disable wxEvtHandler chain mechanism for wxWindows:
1131     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1132
1133     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1134 }
1135 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1136 {
1137     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1138     // handler of our stack when is destroyed will be Unlink()ed and thus
1139     // will call this function to update the pointer of this window...
1140
1141     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1142 }
1143
1144 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1145 {
1146     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1147
1148     // the new handler is going to be part of the wxWindow stack of event handlers:
1149     // it can't be part also of an event handler double-linked chain:
1150     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1151         "The handler being pushed in the wxWindow stack shouldn't be part of "
1152         "a wxEvtHandler chain; call Unlink() on it first");
1153
1154     wxEvtHandler *handlerOld = GetEventHandler();
1155     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1156
1157     // now use wxEvtHandler double-linked list to implement a stack:
1158     handlerToPush->SetNextHandler(handlerOld);
1159
1160     if (handlerOld != this)
1161         handlerOld->SetPreviousHandler(handlerToPush);
1162
1163     SetEventHandler(handlerToPush);
1164
1165 #ifdef __WXDEBUG__
1166     // final checks of the operations done above:
1167     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1168         "the first handler of the wxWindow stack should have no previous handlers set" );
1169     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1170         "the first handler of the wxWindow stack should have non-NULL next handler" );
1171
1172     wxEvtHandler* pLast = handlerToPush;
1173     while (pLast && pLast != this)
1174         pLast = pLast->GetNextHandler();
1175     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1176         "the last handler of the wxWindow stack should have this window as next handler" );
1177 #endif
1178 }
1179
1180 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1181 {
1182     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1183
1184     wxEvtHandler *firstHandler = GetEventHandler();
1185     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1186     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1187     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1188         "the first handler of the wxWindow stack should have no previous handlers set" );
1189
1190     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1191     wxCHECK_MSG( secondHandler != NULL, NULL,
1192         "the first handler of the wxWindow stack should have non-NULL next handler" );
1193
1194     firstHandler->SetNextHandler(NULL);
1195     secondHandler->SetPreviousHandler(NULL);
1196
1197     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1198     SetEventHandler(secondHandler);
1199
1200     if ( deleteHandler )
1201     {
1202         delete firstHandler;
1203         firstHandler = NULL;
1204     }
1205
1206     return firstHandler;
1207 }
1208
1209 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1210 {
1211     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1212     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1213
1214     if (handlerToRemove == GetEventHandler())
1215     {
1216         // removing the first event handler is equivalent to "popping" the stack
1217         PopEventHandler(false);
1218         return true;
1219     }
1220
1221     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1222     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1223     while ( handlerCur != this )
1224     {
1225         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1226
1227         if ( handlerCur == handlerToRemove )
1228         {
1229             handlerCur->Unlink();
1230
1231             wxASSERT_MSG( handlerCur != GetEventHandler(),
1232                         "the case Remove == Pop should was already handled" );
1233             return true;
1234         }
1235
1236         handlerCur = handlerNext;
1237     }
1238
1239     wxFAIL_MSG( _T("where has the event handler gone?") );
1240
1241     return false;
1242 }
1243
1244 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1245 {
1246     // SafelyProcessEvent() will handle exceptions nicely
1247     return GetEventHandler()->SafelyProcessEvent(event);
1248 }
1249
1250 // ----------------------------------------------------------------------------
1251 // colours, fonts &c
1252 // ----------------------------------------------------------------------------
1253
1254 void wxWindowBase::InheritAttributes()
1255 {
1256     const wxWindowBase * const parent = GetParent();
1257     if ( !parent )
1258         return;
1259
1260     // we only inherit attributes which had been explicitly set for the parent
1261     // which ensures that this only happens if the user really wants it and
1262     // not by default which wouldn't make any sense in modern GUIs where the
1263     // controls don't all use the same fonts (nor colours)
1264     if ( parent->m_inheritFont && !m_hasFont )
1265         SetFont(parent->GetFont());
1266
1267     // in addition, there is a possibility to explicitly forbid inheriting
1268     // colours at each class level by overriding ShouldInheritColours()
1269     if ( ShouldInheritColours() )
1270     {
1271         if ( parent->m_inheritFgCol && !m_hasFgCol )
1272             SetForegroundColour(parent->GetForegroundColour());
1273
1274         // inheriting (solid) background colour is wrong as it totally breaks
1275         // any kind of themed backgrounds
1276         //
1277         // instead, the controls should use the same background as their parent
1278         // (ideally by not drawing it at all)
1279 #if 0
1280         if ( parent->m_inheritBgCol && !m_hasBgCol )
1281             SetBackgroundColour(parent->GetBackgroundColour());
1282 #endif // 0
1283     }
1284 }
1285
1286 /* static */ wxVisualAttributes
1287 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1288 {
1289     // it is important to return valid values for all attributes from here,
1290     // GetXXX() below rely on this
1291     wxVisualAttributes attrs;
1292     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1293     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1294
1295     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1296     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1297     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1298     // colour on other platforms.
1299
1300 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1301     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1302 #else
1303     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1304 #endif
1305     return attrs;
1306 }
1307
1308 wxColour wxWindowBase::GetBackgroundColour() const
1309 {
1310     if ( !m_backgroundColour.IsOk() )
1311     {
1312         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1313
1314         // get our default background colour
1315         wxColour colBg = GetDefaultAttributes().colBg;
1316
1317         // we must return some valid colour to avoid redoing this every time
1318         // and also to avoid surprizing the applications written for older
1319         // wxWidgets versions where GetBackgroundColour() always returned
1320         // something -- so give them something even if it doesn't make sense
1321         // for this window (e.g. it has a themed background)
1322         if ( !colBg.Ok() )
1323             colBg = GetClassDefaultAttributes().colBg;
1324
1325         return colBg;
1326     }
1327     else
1328         return m_backgroundColour;
1329 }
1330
1331 wxColour wxWindowBase::GetForegroundColour() const
1332 {
1333     // logic is the same as above
1334     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1335     {
1336         wxColour colFg = GetDefaultAttributes().colFg;
1337
1338         if ( !colFg.IsOk() )
1339             colFg = GetClassDefaultAttributes().colFg;
1340
1341         return colFg;
1342     }
1343     else
1344         return m_foregroundColour;
1345 }
1346
1347 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1348 {
1349     if ( colour == m_backgroundColour )
1350         return false;
1351
1352     m_hasBgCol = colour.IsOk();
1353     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1354         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1355
1356     m_inheritBgCol = m_hasBgCol;
1357     m_backgroundColour = colour;
1358     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1359     return true;
1360 }
1361
1362 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1363 {
1364     if (colour == m_foregroundColour )
1365         return false;
1366
1367     m_hasFgCol = colour.IsOk();
1368     m_inheritFgCol = m_hasFgCol;
1369     m_foregroundColour = colour;
1370     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1371     return true;
1372 }
1373
1374 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1375 {
1376     // setting an invalid cursor is ok, it means that we don't have any special
1377     // cursor
1378     if ( m_cursor.IsSameAs(cursor) )
1379     {
1380         // no change
1381         return false;
1382     }
1383
1384     m_cursor = cursor;
1385
1386     return true;
1387 }
1388
1389 wxFont wxWindowBase::GetFont() const
1390 {
1391     // logic is the same as in GetBackgroundColour()
1392     if ( !m_font.IsOk() )
1393     {
1394         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1395
1396         wxFont font = GetDefaultAttributes().font;
1397         if ( !font.IsOk() )
1398             font = GetClassDefaultAttributes().font;
1399
1400         return font;
1401     }
1402     else
1403         return m_font;
1404 }
1405
1406 bool wxWindowBase::SetFont(const wxFont& font)
1407 {
1408     if ( font == m_font )
1409     {
1410         // no change
1411         return false;
1412     }
1413
1414     m_font = font;
1415     m_hasFont = font.IsOk();
1416     m_inheritFont = m_hasFont;
1417
1418     InvalidateBestSize();
1419
1420     return true;
1421 }
1422
1423 #if wxUSE_PALETTE
1424
1425 void wxWindowBase::SetPalette(const wxPalette& pal)
1426 {
1427     m_hasCustomPalette = true;
1428     m_palette = pal;
1429
1430     // VZ: can anyone explain me what do we do here?
1431     wxWindowDC d((wxWindow *) this);
1432     d.SetPalette(pal);
1433 }
1434
1435 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1436 {
1437     wxWindow *win = (wxWindow *)this;
1438     while ( win && !win->HasCustomPalette() )
1439     {
1440         win = win->GetParent();
1441     }
1442
1443     return win;
1444 }
1445
1446 #endif // wxUSE_PALETTE
1447
1448 #if wxUSE_CARET
1449 void wxWindowBase::SetCaret(wxCaret *caret)
1450 {
1451     if ( m_caret )
1452     {
1453         delete m_caret;
1454     }
1455
1456     m_caret = caret;
1457
1458     if ( m_caret )
1459     {
1460         wxASSERT_MSG( m_caret->GetWindow() == this,
1461                       wxT("caret should be created associated to this window") );
1462     }
1463 }
1464 #endif // wxUSE_CARET
1465
1466 #if wxUSE_VALIDATORS
1467 // ----------------------------------------------------------------------------
1468 // validators
1469 // ----------------------------------------------------------------------------
1470
1471 void wxWindowBase::SetValidator(const wxValidator& validator)
1472 {
1473     if ( m_windowValidator )
1474         delete m_windowValidator;
1475
1476     m_windowValidator = (wxValidator *)validator.Clone();
1477
1478     if ( m_windowValidator )
1479         m_windowValidator->SetWindow(this);
1480 }
1481 #endif // wxUSE_VALIDATORS
1482
1483 // ----------------------------------------------------------------------------
1484 // update region stuff
1485 // ----------------------------------------------------------------------------
1486
1487 wxRect wxWindowBase::GetUpdateClientRect() const
1488 {
1489     wxRegion rgnUpdate = GetUpdateRegion();
1490     rgnUpdate.Intersect(GetClientRect());
1491     wxRect rectUpdate = rgnUpdate.GetBox();
1492     wxPoint ptOrigin = GetClientAreaOrigin();
1493     rectUpdate.x -= ptOrigin.x;
1494     rectUpdate.y -= ptOrigin.y;
1495
1496     return rectUpdate;
1497 }
1498
1499 bool wxWindowBase::DoIsExposed(int x, int y) const
1500 {
1501     return m_updateRegion.Contains(x, y) != wxOutRegion;
1502 }
1503
1504 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1505 {
1506     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1507 }
1508
1509 void wxWindowBase::ClearBackground()
1510 {
1511     // wxGTK uses its own version, no need to add never used code
1512 #ifndef __WXGTK__
1513     wxClientDC dc((wxWindow *)this);
1514     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1515     dc.SetBackground(brush);
1516     dc.Clear();
1517 #endif // __WXGTK__
1518 }
1519
1520 // ----------------------------------------------------------------------------
1521 // find child window by id or name
1522 // ----------------------------------------------------------------------------
1523
1524 wxWindow *wxWindowBase::FindWindow(long id) const
1525 {
1526     if ( id == m_windowId )
1527         return (wxWindow *)this;
1528
1529     wxWindowBase *res = NULL;
1530     wxWindowList::compatibility_iterator node;
1531     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1532     {
1533         wxWindowBase *child = node->GetData();
1534         res = child->FindWindow( id );
1535     }
1536
1537     return (wxWindow *)res;
1538 }
1539
1540 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1541 {
1542     if ( name == m_windowName )
1543         return (wxWindow *)this;
1544
1545     wxWindowBase *res = NULL;
1546     wxWindowList::compatibility_iterator node;
1547     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1548     {
1549         wxWindow *child = node->GetData();
1550         res = child->FindWindow(name);
1551     }
1552
1553     return (wxWindow *)res;
1554 }
1555
1556
1557 // find any window by id or name or label: If parent is non-NULL, look through
1558 // children for a label or title matching the specified string. If NULL, look
1559 // through all top-level windows.
1560 //
1561 // to avoid duplicating code we reuse the same helper function but with
1562 // different comparators
1563
1564 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1565                                 const wxString& label, long id);
1566
1567 static
1568 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1569                            long WXUNUSED(id))
1570 {
1571     return win->GetLabel() == label;
1572 }
1573
1574 static
1575 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1576                           long WXUNUSED(id))
1577 {
1578     return win->GetName() == label;
1579 }
1580
1581 static
1582 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1583                         long id)
1584 {
1585     return win->GetId() == id;
1586 }
1587
1588 // recursive helper for the FindWindowByXXX() functions
1589 static
1590 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1591                                   const wxString& label,
1592                                   long id,
1593                                   wxFindWindowCmp cmp)
1594 {
1595     if ( parent )
1596     {
1597         // see if this is the one we're looking for
1598         if ( (*cmp)(parent, label, id) )
1599             return (wxWindow *)parent;
1600
1601         // It wasn't, so check all its children
1602         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1603               node;
1604               node = node->GetNext() )
1605         {
1606             // recursively check each child
1607             wxWindow *win = (wxWindow *)node->GetData();
1608             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1609             if (retwin)
1610                 return retwin;
1611         }
1612     }
1613
1614     // Not found
1615     return NULL;
1616 }
1617
1618 // helper for FindWindowByXXX()
1619 static
1620 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1621                              const wxString& label,
1622                              long id,
1623                              wxFindWindowCmp cmp)
1624 {
1625     if ( parent )
1626     {
1627         // just check parent and all its children
1628         return wxFindWindowRecursively(parent, label, id, cmp);
1629     }
1630
1631     // start at very top of wx's windows
1632     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1633           node;
1634           node = node->GetNext() )
1635     {
1636         // recursively check each window & its children
1637         wxWindow *win = node->GetData();
1638         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1639         if (retwin)
1640             return retwin;
1641     }
1642
1643     return NULL;
1644 }
1645
1646 /* static */
1647 wxWindow *
1648 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1649 {
1650     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1651 }
1652
1653 /* static */
1654 wxWindow *
1655 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1656 {
1657     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1658
1659     if ( !win )
1660     {
1661         // fall back to the label
1662         win = FindWindowByLabel(title, parent);
1663     }
1664
1665     return win;
1666 }
1667
1668 /* static */
1669 wxWindow *
1670 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1671 {
1672     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1673 }
1674
1675 // ----------------------------------------------------------------------------
1676 // dialog oriented functions
1677 // ----------------------------------------------------------------------------
1678
1679 void wxWindowBase::MakeModal(bool modal)
1680 {
1681     // Disable all other windows
1682     if ( IsTopLevel() )
1683     {
1684         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1685         while (node)
1686         {
1687             wxWindow *win = node->GetData();
1688             if (win != this)
1689                 win->Enable(!modal);
1690
1691             node = node->GetNext();
1692         }
1693     }
1694 }
1695
1696 bool wxWindowBase::Validate()
1697 {
1698 #if wxUSE_VALIDATORS
1699     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1700
1701     wxWindowList::compatibility_iterator node;
1702     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1703     {
1704         wxWindowBase *child = node->GetData();
1705         wxValidator *validator = child->GetValidator();
1706         if ( validator && !validator->Validate((wxWindow *)this) )
1707         {
1708             return false;
1709         }
1710
1711         if ( recurse && !child->Validate() )
1712         {
1713             return false;
1714         }
1715     }
1716 #endif // wxUSE_VALIDATORS
1717
1718     return true;
1719 }
1720
1721 bool wxWindowBase::TransferDataToWindow()
1722 {
1723 #if wxUSE_VALIDATORS
1724     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1725
1726     wxWindowList::compatibility_iterator node;
1727     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1728     {
1729         wxWindowBase *child = node->GetData();
1730         wxValidator *validator = child->GetValidator();
1731         if ( validator && !validator->TransferToWindow() )
1732         {
1733             wxLogWarning(_("Could not transfer data to window"));
1734 #if wxUSE_LOG
1735             wxLog::FlushActive();
1736 #endif // wxUSE_LOG
1737
1738             return false;
1739         }
1740
1741         if ( recurse )
1742         {
1743             if ( !child->TransferDataToWindow() )
1744             {
1745                 // warning already given
1746                 return false;
1747             }
1748         }
1749     }
1750 #endif // wxUSE_VALIDATORS
1751
1752     return true;
1753 }
1754
1755 bool wxWindowBase::TransferDataFromWindow()
1756 {
1757 #if wxUSE_VALIDATORS
1758     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1759
1760     wxWindowList::compatibility_iterator node;
1761     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1762     {
1763         wxWindow *child = node->GetData();
1764         wxValidator *validator = child->GetValidator();
1765         if ( validator && !validator->TransferFromWindow() )
1766         {
1767             // nop warning here because the application is supposed to give
1768             // one itself - we don't know here what might have gone wrongly
1769
1770             return false;
1771         }
1772
1773         if ( recurse )
1774         {
1775             if ( !child->TransferDataFromWindow() )
1776             {
1777                 // warning already given
1778                 return false;
1779             }
1780         }
1781     }
1782 #endif // wxUSE_VALIDATORS
1783
1784     return true;
1785 }
1786
1787 void wxWindowBase::InitDialog()
1788 {
1789     wxInitDialogEvent event(GetId());
1790     event.SetEventObject( this );
1791     GetEventHandler()->ProcessEvent(event);
1792 }
1793
1794 // ----------------------------------------------------------------------------
1795 // context-sensitive help support
1796 // ----------------------------------------------------------------------------
1797
1798 #if wxUSE_HELP
1799
1800 // associate this help text with this window
1801 void wxWindowBase::SetHelpText(const wxString& text)
1802 {
1803     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1804     if ( helpProvider )
1805     {
1806         helpProvider->AddHelp(this, text);
1807     }
1808 }
1809
1810 #if WXWIN_COMPATIBILITY_2_8
1811 // associate this help text with all windows with the same id as this
1812 // one
1813 void wxWindowBase::SetHelpTextForId(const wxString& text)
1814 {
1815     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1816     if ( helpProvider )
1817     {
1818         helpProvider->AddHelp(GetId(), text);
1819     }
1820 }
1821 #endif // WXWIN_COMPATIBILITY_2_8
1822
1823 // get the help string associated with this window (may be empty)
1824 // default implementation forwards calls to the help provider
1825 wxString
1826 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1827                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1828 {
1829     wxString text;
1830     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1831     if ( helpProvider )
1832     {
1833         text = helpProvider->GetHelp(this);
1834     }
1835
1836     return text;
1837 }
1838
1839 // show help for this window
1840 void wxWindowBase::OnHelp(wxHelpEvent& event)
1841 {
1842     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1843     if ( helpProvider )
1844     {
1845         wxPoint pos = event.GetPosition();
1846         const wxHelpEvent::Origin origin = event.GetOrigin();
1847         if ( origin == wxHelpEvent::Origin_Keyboard )
1848         {
1849             // if the help event was generated from keyboard it shouldn't
1850             // appear at the mouse position (which is still the only position
1851             // associated with help event) if the mouse is far away, although
1852             // we still do use the mouse position if it's over the window
1853             // because we suppose the user looks approximately at the mouse
1854             // already and so it would be more convenient than showing tooltip
1855             // at some arbitrary position which can be quite far from it
1856             const wxRect rectClient = GetClientRect();
1857             if ( !rectClient.Contains(ScreenToClient(pos)) )
1858             {
1859                 // position help slightly under and to the right of this window
1860                 pos = ClientToScreen(wxPoint(
1861                         2*GetCharWidth(),
1862                         rectClient.height + GetCharHeight()
1863                       ));
1864             }
1865         }
1866
1867         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1868         {
1869             // skip the event.Skip() below
1870             return;
1871         }
1872     }
1873
1874     event.Skip();
1875 }
1876
1877 #endif // wxUSE_HELP
1878
1879 // ----------------------------------------------------------------------------
1880 // tooltips
1881 // ----------------------------------------------------------------------------
1882
1883 #if wxUSE_TOOLTIPS
1884
1885 void wxWindowBase::SetToolTip( const wxString &tip )
1886 {
1887     // don't create the new tooltip if we already have one
1888     if ( m_tooltip )
1889     {
1890         m_tooltip->SetTip( tip );
1891     }
1892     else
1893     {
1894         SetToolTip( new wxToolTip( tip ) );
1895     }
1896
1897     // setting empty tooltip text does not remove the tooltip any more - use
1898     // SetToolTip(NULL) for this
1899 }
1900
1901 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1902 {
1903     if ( m_tooltip != tooltip )
1904     {
1905         if ( m_tooltip )
1906             delete m_tooltip;
1907
1908         m_tooltip = tooltip;
1909     }
1910 }
1911
1912 #endif // wxUSE_TOOLTIPS
1913
1914 // ----------------------------------------------------------------------------
1915 // constraints and sizers
1916 // ----------------------------------------------------------------------------
1917
1918 #if wxUSE_CONSTRAINTS
1919
1920 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1921 {
1922     if ( m_constraints )
1923     {
1924         UnsetConstraints(m_constraints);
1925         delete m_constraints;
1926     }
1927     m_constraints = constraints;
1928     if ( m_constraints )
1929     {
1930         // Make sure other windows know they're part of a 'meaningful relationship'
1931         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1932             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1933         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1934             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1935         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1936             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1937         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1938             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1939         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1940             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1941         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1942             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1943         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1944             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1945         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1946             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1947     }
1948 }
1949
1950 // This removes any dangling pointers to this window in other windows'
1951 // constraintsInvolvedIn lists.
1952 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1953 {
1954     if ( c )
1955     {
1956         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1957             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1958         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1959             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1960         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1961             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1962         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1963             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1964         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1965             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1966         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1967             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1968         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1969             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1970         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1971             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1972     }
1973 }
1974
1975 // Back-pointer to other windows we're involved with, so if we delete this
1976 // window, we must delete any constraints we're involved with.
1977 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1978 {
1979     if ( !m_constraintsInvolvedIn )
1980         m_constraintsInvolvedIn = new wxWindowList;
1981     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1982         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1983 }
1984
1985 // REMOVE back-pointer to other windows we're involved with.
1986 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1987 {
1988     if ( m_constraintsInvolvedIn )
1989         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1990 }
1991
1992 // Reset any constraints that mention this window
1993 void wxWindowBase::DeleteRelatedConstraints()
1994 {
1995     if ( m_constraintsInvolvedIn )
1996     {
1997         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1998         while (node)
1999         {
2000             wxWindow *win = node->GetData();
2001             wxLayoutConstraints *constr = win->GetConstraints();
2002
2003             // Reset any constraints involving this window
2004             if ( constr )
2005             {
2006                 constr->left.ResetIfWin(this);
2007                 constr->top.ResetIfWin(this);
2008                 constr->right.ResetIfWin(this);
2009                 constr->bottom.ResetIfWin(this);
2010                 constr->width.ResetIfWin(this);
2011                 constr->height.ResetIfWin(this);
2012                 constr->centreX.ResetIfWin(this);
2013                 constr->centreY.ResetIfWin(this);
2014             }
2015
2016             wxWindowList::compatibility_iterator next = node->GetNext();
2017             m_constraintsInvolvedIn->Erase(node);
2018             node = next;
2019         }
2020
2021         delete m_constraintsInvolvedIn;
2022         m_constraintsInvolvedIn = NULL;
2023     }
2024 }
2025
2026 #endif // wxUSE_CONSTRAINTS
2027
2028 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2029 {
2030     if ( sizer == m_windowSizer)
2031         return;
2032
2033     if ( m_windowSizer )
2034     {
2035         m_windowSizer->SetContainingWindow(NULL);
2036
2037         if ( deleteOld )
2038             delete m_windowSizer;
2039     }
2040
2041     m_windowSizer = sizer;
2042     if ( m_windowSizer )
2043     {
2044         m_windowSizer->SetContainingWindow((wxWindow *)this);
2045     }
2046
2047     SetAutoLayout(m_windowSizer != NULL);
2048 }
2049
2050 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2051 {
2052     SetSizer( sizer, deleteOld );
2053     sizer->SetSizeHints( (wxWindow*) this );
2054 }
2055
2056
2057 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2058 {
2059     // adding a window to a sizer twice is going to result in fatal and
2060     // hard to debug problems later because when deleting the second
2061     // associated wxSizerItem we're going to dereference a dangling
2062     // pointer; so try to detect this as early as possible
2063     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2064                   _T("Adding a window to the same sizer twice?") );
2065
2066     m_containingSizer = sizer;
2067 }
2068
2069 #if wxUSE_CONSTRAINTS
2070
2071 void wxWindowBase::SatisfyConstraints()
2072 {
2073     wxLayoutConstraints *constr = GetConstraints();
2074     bool wasOk = constr && constr->AreSatisfied();
2075
2076     ResetConstraints();   // Mark all constraints as unevaluated
2077
2078     int noChanges = 1;
2079
2080     // if we're a top level panel (i.e. our parent is frame/dialog), our
2081     // own constraints will never be satisfied any more unless we do it
2082     // here
2083     if ( wasOk )
2084     {
2085         while ( noChanges > 0 )
2086         {
2087             LayoutPhase1(&noChanges);
2088         }
2089     }
2090
2091     LayoutPhase2(&noChanges);
2092 }
2093
2094 #endif // wxUSE_CONSTRAINTS
2095
2096 bool wxWindowBase::Layout()
2097 {
2098     // If there is a sizer, use it instead of the constraints
2099     if ( GetSizer() )
2100     {
2101         int w = 0, h = 0;
2102         GetVirtualSize(&w, &h);
2103         GetSizer()->SetDimension( 0, 0, w, h );
2104     }
2105 #if wxUSE_CONSTRAINTS
2106     else
2107     {
2108         SatisfyConstraints(); // Find the right constraints values
2109         SetConstraintSizes(); // Recursively set the real window sizes
2110     }
2111 #endif
2112
2113     return true;
2114 }
2115
2116 #if wxUSE_CONSTRAINTS
2117
2118 // first phase of the constraints evaluation: set our own constraints
2119 bool wxWindowBase::LayoutPhase1(int *noChanges)
2120 {
2121     wxLayoutConstraints *constr = GetConstraints();
2122
2123     return !constr || constr->SatisfyConstraints(this, noChanges);
2124 }
2125
2126 // second phase: set the constraints for our children
2127 bool wxWindowBase::LayoutPhase2(int *noChanges)
2128 {
2129     *noChanges = 0;
2130
2131     // Layout children
2132     DoPhase(1);
2133
2134     // Layout grand children
2135     DoPhase(2);
2136
2137     return true;
2138 }
2139
2140 // Do a phase of evaluating child constraints
2141 bool wxWindowBase::DoPhase(int phase)
2142 {
2143     // the list containing the children for which the constraints are already
2144     // set correctly
2145     wxWindowList succeeded;
2146
2147     // the max number of iterations we loop before concluding that we can't set
2148     // the constraints
2149     static const int maxIterations = 500;
2150
2151     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2152     {
2153         int noChanges = 0;
2154
2155         // loop over all children setting their constraints
2156         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2157               node;
2158               node = node->GetNext() )
2159         {
2160             wxWindow *child = node->GetData();
2161             if ( child->IsTopLevel() )
2162             {
2163                 // top level children are not inside our client area
2164                 continue;
2165             }
2166
2167             if ( !child->GetConstraints() || succeeded.Find(child) )
2168             {
2169                 // this one is either already ok or nothing we can do about it
2170                 continue;
2171             }
2172
2173             int tempNoChanges = 0;
2174             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2175                                       : child->LayoutPhase2(&tempNoChanges);
2176             noChanges += tempNoChanges;
2177
2178             if ( success )
2179             {
2180                 succeeded.Append(child);
2181             }
2182         }
2183
2184         if ( !noChanges )
2185         {
2186             // constraints are set
2187             break;
2188         }
2189     }
2190
2191     return true;
2192 }
2193
2194 void wxWindowBase::ResetConstraints()
2195 {
2196     wxLayoutConstraints *constr = GetConstraints();
2197     if ( constr )
2198     {
2199         constr->left.SetDone(false);
2200         constr->top.SetDone(false);
2201         constr->right.SetDone(false);
2202         constr->bottom.SetDone(false);
2203         constr->width.SetDone(false);
2204         constr->height.SetDone(false);
2205         constr->centreX.SetDone(false);
2206         constr->centreY.SetDone(false);
2207     }
2208
2209     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2210     while (node)
2211     {
2212         wxWindow *win = node->GetData();
2213         if ( !win->IsTopLevel() )
2214             win->ResetConstraints();
2215         node = node->GetNext();
2216     }
2217 }
2218
2219 // Need to distinguish between setting the 'fake' size for windows and sizers,
2220 // and setting the real values.
2221 void wxWindowBase::SetConstraintSizes(bool recurse)
2222 {
2223     wxLayoutConstraints *constr = GetConstraints();
2224     if ( constr && constr->AreSatisfied() )
2225     {
2226         int x = constr->left.GetValue();
2227         int y = constr->top.GetValue();
2228         int w = constr->width.GetValue();
2229         int h = constr->height.GetValue();
2230
2231         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2232              (constr->height.GetRelationship() != wxAsIs) )
2233         {
2234             SetSize(x, y, w, h);
2235         }
2236         else
2237         {
2238             // If we don't want to resize this window, just move it...
2239             Move(x, y);
2240         }
2241     }
2242     else if ( constr )
2243     {
2244         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2245                    GetClassInfo()->GetClassName(),
2246                    GetName().c_str());
2247     }
2248
2249     if ( recurse )
2250     {
2251         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2252         while (node)
2253         {
2254             wxWindow *win = node->GetData();
2255             if ( !win->IsTopLevel() && win->GetConstraints() )
2256                 win->SetConstraintSizes();
2257             node = node->GetNext();
2258         }
2259     }
2260 }
2261
2262 // Only set the size/position of the constraint (if any)
2263 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2264 {
2265     wxLayoutConstraints *constr = GetConstraints();
2266     if ( constr )
2267     {
2268         if ( x != wxDefaultCoord )
2269         {
2270             constr->left.SetValue(x);
2271             constr->left.SetDone(true);
2272         }
2273         if ( y != wxDefaultCoord )
2274         {
2275             constr->top.SetValue(y);
2276             constr->top.SetDone(true);
2277         }
2278         if ( w != wxDefaultCoord )
2279         {
2280             constr->width.SetValue(w);
2281             constr->width.SetDone(true);
2282         }
2283         if ( h != wxDefaultCoord )
2284         {
2285             constr->height.SetValue(h);
2286             constr->height.SetDone(true);
2287         }
2288     }
2289 }
2290
2291 void wxWindowBase::MoveConstraint(int x, int y)
2292 {
2293     wxLayoutConstraints *constr = GetConstraints();
2294     if ( constr )
2295     {
2296         if ( x != wxDefaultCoord )
2297         {
2298             constr->left.SetValue(x);
2299             constr->left.SetDone(true);
2300         }
2301         if ( y != wxDefaultCoord )
2302         {
2303             constr->top.SetValue(y);
2304             constr->top.SetDone(true);
2305         }
2306     }
2307 }
2308
2309 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2310 {
2311     wxLayoutConstraints *constr = GetConstraints();
2312     if ( constr )
2313     {
2314         *w = constr->width.GetValue();
2315         *h = constr->height.GetValue();
2316     }
2317     else
2318         GetSize(w, h);
2319 }
2320
2321 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2322 {
2323     wxLayoutConstraints *constr = GetConstraints();
2324     if ( constr )
2325     {
2326         *w = constr->width.GetValue();
2327         *h = constr->height.GetValue();
2328     }
2329     else
2330         GetClientSize(w, h);
2331 }
2332
2333 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2334 {
2335     wxLayoutConstraints *constr = GetConstraints();
2336     if ( constr )
2337     {
2338         *x = constr->left.GetValue();
2339         *y = constr->top.GetValue();
2340     }
2341     else
2342         GetPosition(x, y);
2343 }
2344
2345 #endif // wxUSE_CONSTRAINTS
2346
2347 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2348 {
2349     // don't do it for the dialogs/frames - they float independently of their
2350     // parent
2351     if ( !IsTopLevel() )
2352     {
2353         wxWindow *parent = GetParent();
2354         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2355         {
2356             wxPoint pt(parent->GetClientAreaOrigin());
2357             x += pt.x;
2358             y += pt.y;
2359         }
2360     }
2361 }
2362
2363 // ----------------------------------------------------------------------------
2364 // Update UI processing
2365 // ----------------------------------------------------------------------------
2366
2367 void wxWindowBase::UpdateWindowUI(long flags)
2368 {
2369     wxUpdateUIEvent event(GetId());
2370     event.SetEventObject(this);
2371
2372     if ( GetEventHandler()->ProcessEvent(event) )
2373     {
2374         DoUpdateWindowUI(event);
2375     }
2376
2377     if (flags & wxUPDATE_UI_RECURSE)
2378     {
2379         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2380         while (node)
2381         {
2382             wxWindow* child = (wxWindow*) node->GetData();
2383             child->UpdateWindowUI(flags);
2384             node = node->GetNext();
2385         }
2386     }
2387 }
2388
2389 // do the window-specific processing after processing the update event
2390 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2391 {
2392     if ( event.GetSetEnabled() )
2393         Enable(event.GetEnabled());
2394
2395     if ( event.GetSetShown() )
2396         Show(event.GetShown());
2397 }
2398
2399 // ----------------------------------------------------------------------------
2400 // dialog units translations
2401 // ----------------------------------------------------------------------------
2402
2403 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2404 {
2405     int charWidth = GetCharWidth();
2406     int charHeight = GetCharHeight();
2407     wxPoint pt2 = wxDefaultPosition;
2408     if (pt.x != wxDefaultCoord)
2409         pt2.x = (int) ((pt.x * 4) / charWidth);
2410     if (pt.y != wxDefaultCoord)
2411         pt2.y = (int) ((pt.y * 8) / charHeight);
2412
2413     return pt2;
2414 }
2415
2416 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2417 {
2418     int charWidth = GetCharWidth();
2419     int charHeight = GetCharHeight();
2420     wxPoint pt2 = wxDefaultPosition;
2421     if (pt.x != wxDefaultCoord)
2422         pt2.x = (int) ((pt.x * charWidth) / 4);
2423     if (pt.y != wxDefaultCoord)
2424         pt2.y = (int) ((pt.y * charHeight) / 8);
2425
2426     return pt2;
2427 }
2428
2429 // ----------------------------------------------------------------------------
2430 // event handlers
2431 // ----------------------------------------------------------------------------
2432
2433 // propagate the colour change event to the subwindows
2434 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2435 {
2436     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2437     while ( node )
2438     {
2439         // Only propagate to non-top-level windows
2440         wxWindow *win = node->GetData();
2441         if ( !win->IsTopLevel() )
2442         {
2443             wxSysColourChangedEvent event2;
2444             event.SetEventObject(win);
2445             win->GetEventHandler()->ProcessEvent(event2);
2446         }
2447
2448         node = node->GetNext();
2449     }
2450
2451     Refresh();
2452 }
2453
2454 // the default action is to populate dialog with data when it's created,
2455 // and nudge the UI into displaying itself correctly in case
2456 // we've turned the wxUpdateUIEvents frequency down low.
2457 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2458 {
2459     TransferDataToWindow();
2460
2461     // Update the UI at this point
2462     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2463 }
2464
2465 // ----------------------------------------------------------------------------
2466 // menu-related functions
2467 // ----------------------------------------------------------------------------
2468
2469 #if wxUSE_MENUS
2470
2471 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2472 {
2473     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2474
2475     wxCurrentPopupMenu = menu;
2476     const bool rc = DoPopupMenu(menu, x, y);
2477     wxCurrentPopupMenu = NULL;
2478
2479     return rc;
2480 }
2481
2482 // this is used to pass the id of the selected item from the menu event handler
2483 // to the main function itself
2484 //
2485 // it's ok to use a global here as there can be at most one popup menu shown at
2486 // any time
2487 static int gs_popupMenuSelection = wxID_NONE;
2488
2489 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2490 {
2491     // store the id in a global variable where we'll retrieve it from later
2492     gs_popupMenuSelection = event.GetId();
2493 }
2494
2495 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2496 {
2497     // nothing to do but do not skip it
2498 }
2499
2500 int
2501 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2502 {
2503     gs_popupMenuSelection = wxID_NONE;
2504
2505     Connect(wxEVT_COMMAND_MENU_SELECTED,
2506             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2507             NULL,
2508             this);
2509
2510     // it is common to construct the menu passed to this function dynamically
2511     // using some fixed range of ids which could clash with the ids used
2512     // elsewhere in the program, which could result in some menu items being
2513     // unintentionally disabled or otherwise modified by update UI handlers
2514     // elsewhere in the program code and this is difficult to avoid in the
2515     // program itself, so instead we just temporarily suspend UI updating while
2516     // this menu is shown
2517     Connect(wxEVT_UPDATE_UI,
2518             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2519             NULL,
2520             this);
2521
2522     PopupMenu(&menu, x, y);
2523
2524     Disconnect(wxEVT_UPDATE_UI,
2525                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2526                NULL,
2527                this);
2528     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2529                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2530                NULL,
2531                this);
2532
2533     return gs_popupMenuSelection;
2534 }
2535
2536 #endif // wxUSE_MENUS
2537
2538 // methods for drawing the sizers in a visible way
2539 #ifdef __WXDEBUG__
2540
2541 static void DrawSizers(wxWindowBase *win);
2542
2543 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2544 {
2545     wxClientDC dc((wxWindow *)win);
2546     dc.SetPen(*pen);
2547     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2548                        *wxTRANSPARENT_BRUSH);
2549     dc.DrawRectangle(rect.Deflate(1, 1));
2550 }
2551
2552 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2553 {
2554     const wxSizerItemList& items = sizer->GetChildren();
2555     for ( wxSizerItemList::const_iterator i = items.begin(),
2556                                         end = items.end();
2557           i != end;
2558           ++i )
2559     {
2560         wxSizerItem *item = *i;
2561         if ( item->IsSizer() )
2562         {
2563             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2564             DrawSizer(win, item->GetSizer());
2565         }
2566         else if ( item->IsSpacer() )
2567         {
2568             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2569         }
2570         else if ( item->IsWindow() )
2571         {
2572             DrawSizers(item->GetWindow());
2573         }
2574         else
2575             wxFAIL_MSG("inconsistent wxSizerItem status!");
2576     }
2577 }
2578
2579 static void DrawSizers(wxWindowBase *win)
2580 {
2581     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2582
2583     wxSizer *sizer = win->GetSizer();
2584     if ( sizer )
2585     {
2586         DrawSizer(win, sizer);
2587     }
2588     else // no sizer, still recurse into the children
2589     {
2590         const wxWindowList& children = win->GetChildren();
2591         for ( wxWindowList::const_iterator i = children.begin(),
2592                                          end = children.end();
2593               i != end;
2594               ++i )
2595         {
2596             DrawSizers(*i);
2597         }
2598
2599         // show all kind of sizes of this window; see the "window sizing" topic
2600         // overview for more info about the various differences:
2601         wxSize fullSz = win->GetSize();
2602         wxSize clientSz = win->GetClientSize();
2603         wxSize bestSz = win->GetBestSize();
2604         wxSize minSz = win->GetMinSize();
2605         wxSize maxSz = win->GetMaxSize();
2606         wxSize virtualSz = win->GetVirtualSize();
2607
2608         wxMessageOutputDebug dbgout;
2609         dbgout.Printf(
2610             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2611             (const char*)win->GetName(),
2612             fullSz.x, fullSz.y,
2613             clientSz.x, clientSz.y,
2614             bestSz.x, bestSz.y,
2615             minSz.x, minSz.y,
2616             maxSz.x, maxSz.y,
2617             virtualSz.x, virtualSz.y);
2618     }
2619 }
2620
2621 #endif // __WXDEBUG__
2622
2623 // process special middle clicks
2624 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2625 {
2626     if ( event.ControlDown() && event.AltDown() )
2627     {
2628 #ifdef __WXDEBUG__
2629         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2630         if ( event.ShiftDown() )
2631         {
2632             DrawSizers(this);
2633             return;
2634         }
2635 #endif // __WXDEBUG__
2636         ::wxInfoMessageBox((wxWindow*)this);
2637     }
2638     else
2639     {
2640         event.Skip();
2641     }
2642 }
2643
2644 // ----------------------------------------------------------------------------
2645 // accessibility
2646 // ----------------------------------------------------------------------------
2647
2648 #if wxUSE_ACCESSIBILITY
2649 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2650 {
2651     if (m_accessible && (accessible != m_accessible))
2652         delete m_accessible;
2653     m_accessible = accessible;
2654     if (m_accessible)
2655         m_accessible->SetWindow((wxWindow*) this);
2656 }
2657
2658 // Returns the accessible object, creating if necessary.
2659 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2660 {
2661     if (!m_accessible)
2662         m_accessible = CreateAccessible();
2663     return m_accessible;
2664 }
2665
2666 // Override to create a specific accessible object.
2667 wxAccessible* wxWindowBase::CreateAccessible()
2668 {
2669     return new wxWindowAccessible((wxWindow*) this);
2670 }
2671
2672 #endif
2673
2674 // ----------------------------------------------------------------------------
2675 // list classes implementation
2676 // ----------------------------------------------------------------------------
2677
2678 #if wxUSE_STL
2679
2680 #include "wx/listimpl.cpp"
2681 WX_DEFINE_LIST(wxWindowList)
2682
2683 #else // !wxUSE_STL
2684
2685 void wxWindowListNode::DeleteData()
2686 {
2687     delete (wxWindow *)GetData();
2688 }
2689
2690 #endif // wxUSE_STL/!wxUSE_STL
2691
2692 // ----------------------------------------------------------------------------
2693 // borders
2694 // ----------------------------------------------------------------------------
2695
2696 wxBorder wxWindowBase::GetBorder(long flags) const
2697 {
2698     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2699     if ( border == wxBORDER_DEFAULT )
2700     {
2701         border = GetDefaultBorder();
2702     }
2703     else if ( border == wxBORDER_THEME )
2704     {
2705         border = GetDefaultBorderForControl();
2706     }
2707
2708     return border;
2709 }
2710
2711 wxBorder wxWindowBase::GetDefaultBorder() const
2712 {
2713     return wxBORDER_NONE;
2714 }
2715
2716 // ----------------------------------------------------------------------------
2717 // hit testing
2718 // ----------------------------------------------------------------------------
2719
2720 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2721 {
2722     // here we just check if the point is inside the window or not
2723
2724     // check the top and left border first
2725     bool outside = x < 0 || y < 0;
2726     if ( !outside )
2727     {
2728         // check the right and bottom borders too
2729         wxSize size = GetSize();
2730         outside = x >= size.x || y >= size.y;
2731     }
2732
2733     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2734 }
2735
2736 // ----------------------------------------------------------------------------
2737 // mouse capture
2738 // ----------------------------------------------------------------------------
2739
2740 struct WXDLLEXPORT wxWindowNext
2741 {
2742     wxWindow *win;
2743     wxWindowNext *next;
2744 } *wxWindowBase::ms_winCaptureNext = NULL;
2745 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2746 bool wxWindowBase::ms_winCaptureChanging = false;
2747
2748 void wxWindowBase::CaptureMouse()
2749 {
2750     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), static_cast<void*>(this));
2751
2752     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2753
2754     ms_winCaptureChanging = true;
2755
2756     wxWindow *winOld = GetCapture();
2757     if ( winOld )
2758     {
2759         ((wxWindowBase*) winOld)->DoReleaseMouse();
2760
2761         // save it on stack
2762         wxWindowNext *item = new wxWindowNext;
2763         item->win = winOld;
2764         item->next = ms_winCaptureNext;
2765         ms_winCaptureNext = item;
2766     }
2767     //else: no mouse capture to save
2768
2769     DoCaptureMouse();
2770     ms_winCaptureCurrent = (wxWindow*)this;
2771
2772     ms_winCaptureChanging = false;
2773 }
2774
2775 void wxWindowBase::ReleaseMouse()
2776 {
2777     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), static_cast<void*>(this));
2778
2779     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2780
2781     wxASSERT_MSG( GetCapture() == this,
2782                   "attempt to release mouse, but this window hasn't captured it" );
2783     wxASSERT_MSG( ms_winCaptureCurrent == this,
2784                   "attempt to release mouse, but this window hasn't captured it" );
2785
2786     ms_winCaptureChanging = true;
2787
2788     DoReleaseMouse();
2789     ms_winCaptureCurrent = NULL;
2790
2791     if ( ms_winCaptureNext )
2792     {
2793         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2794         ms_winCaptureCurrent = ms_winCaptureNext->win;
2795
2796         wxWindowNext *item = ms_winCaptureNext;
2797         ms_winCaptureNext = item->next;
2798         delete item;
2799     }
2800     //else: stack is empty, no previous capture
2801
2802     ms_winCaptureChanging = false;
2803
2804     wxLogTrace(_T("mousecapture"),
2805         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2806         static_cast<void*>(GetCapture()));
2807 }
2808
2809 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2810 {
2811     wxMouseCaptureLostEvent event(win->GetId());
2812     event.SetEventObject(win);
2813     if ( !win->GetEventHandler()->ProcessEvent(event) )
2814     {
2815         // windows must handle this event, otherwise the app wouldn't behave
2816         // correctly if it loses capture unexpectedly; see the discussion here:
2817         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2818         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2819         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2820     }
2821 }
2822
2823 /* static */
2824 void wxWindowBase::NotifyCaptureLost()
2825 {
2826     // don't do anything if capture lost was expected, i.e. resulted from
2827     // a wx call to ReleaseMouse or CaptureMouse:
2828     if ( ms_winCaptureChanging )
2829         return;
2830
2831     // if the capture was lost unexpectedly, notify every window that has
2832     // capture (on stack or current) about it and clear the stack:
2833
2834     if ( ms_winCaptureCurrent )
2835     {
2836         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2837         ms_winCaptureCurrent = NULL;
2838     }
2839
2840     while ( ms_winCaptureNext )
2841     {
2842         wxWindowNext *item = ms_winCaptureNext;
2843         ms_winCaptureNext = item->next;
2844
2845         DoNotifyWindowAboutCaptureLost(item->win);
2846
2847         delete item;
2848     }
2849 }
2850
2851 #if wxUSE_HOTKEY
2852
2853 bool
2854 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2855                              int WXUNUSED(modifiers),
2856                              int WXUNUSED(keycode))
2857 {
2858     // not implemented
2859     return false;
2860 }
2861
2862 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2863 {
2864     // not implemented
2865     return false;
2866 }
2867
2868 #endif // wxUSE_HOTKEY
2869
2870 // ----------------------------------------------------------------------------
2871 // event processing
2872 // ----------------------------------------------------------------------------
2873
2874 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2875 {
2876 #if wxUSE_VALIDATORS
2877     // Can only use the validator of the window which
2878     // is receiving the event
2879     if ( event.GetEventObject() == this )
2880     {
2881         wxValidator * const validator = GetValidator();
2882         if ( validator && validator->ProcessEventHere(event) )
2883         {
2884             return true;
2885         }
2886     }
2887 #endif // wxUSE_VALIDATORS
2888
2889     return false;
2890 }
2891
2892 bool wxWindowBase::TryParent(wxEvent& event)
2893 {
2894     // carry on up the parent-child hierarchy if the propagation count hasn't
2895     // reached zero yet
2896     if ( event.ShouldPropagate() )
2897     {
2898         // honour the requests to stop propagation at this window: this is
2899         // used by the dialogs, for example, to prevent processing the events
2900         // from the dialog controls in the parent frame which rarely, if ever,
2901         // makes sense
2902         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2903         {
2904             wxWindow *parent = GetParent();
2905             if ( parent && !parent->IsBeingDeleted() )
2906             {
2907                 wxPropagateOnce propagateOnce(event);
2908
2909                 return parent->GetEventHandler()->ProcessEvent(event);
2910             }
2911         }
2912     }
2913
2914     return wxEvtHandler::TryParent(event);
2915 }
2916
2917 // ----------------------------------------------------------------------------
2918 // window relationships
2919 // ----------------------------------------------------------------------------
2920
2921 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2922 {
2923     wxCHECK_MSG( GetParent(), NULL,
2924                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2925
2926     wxWindowList& siblings = GetParent()->GetChildren();
2927     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2928     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2929
2930     if ( order == OrderBefore )
2931         i = i->GetPrevious();
2932     else // OrderAfter
2933         i = i->GetNext();
2934
2935     return i ? i->GetData() : NULL;
2936 }
2937
2938 // ----------------------------------------------------------------------------
2939 // keyboard navigation
2940 // ----------------------------------------------------------------------------
2941
2942 // Navigates in the specified direction inside this window
2943 bool wxWindowBase::DoNavigateIn(int flags)
2944 {
2945 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2946     // native code doesn't process our wxNavigationKeyEvents anyhow
2947     wxUnusedVar(flags);
2948     return false;
2949 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2950     wxNavigationKeyEvent eventNav;
2951     wxWindow *focused = FindFocus();
2952     eventNav.SetCurrentFocus(focused);
2953     eventNav.SetEventObject(focused);
2954     eventNav.SetFlags(flags);
2955     return GetEventHandler()->ProcessEvent(eventNav);
2956 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2957 }
2958
2959 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2960 {
2961     if ( event.GetKeyCode() != WXK_TAB )
2962         return false;
2963
2964     int flags = wxNavigationKeyEvent::FromTab;
2965
2966     if ( event.ShiftDown() )
2967         flags |= wxNavigationKeyEvent::IsBackward;
2968     else
2969         flags |= wxNavigationKeyEvent::IsForward;
2970
2971     if ( event.ControlDown() )
2972         flags |= wxNavigationKeyEvent::WinChange;
2973
2974     Navigate(flags);
2975     return true;
2976 }
2977
2978 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2979 {
2980     // check that we're not a top level window
2981     wxCHECK_RET( GetParent(),
2982                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2983
2984     // detect the special case when we have nothing to do anyhow and when the
2985     // code below wouldn't work
2986     if ( win == this )
2987         return;
2988
2989     // find the target window in the siblings list
2990     wxWindowList& siblings = GetParent()->GetChildren();
2991     wxWindowList::compatibility_iterator i = siblings.Find(win);
2992     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2993
2994     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2995     // can't just move the node around
2996     wxWindow *self = (wxWindow *)this;
2997     siblings.DeleteObject(self);
2998     if ( move == OrderAfter )
2999     {
3000         i = i->GetNext();
3001     }
3002
3003     if ( i )
3004     {
3005         siblings.Insert(i, self);
3006     }
3007     else // OrderAfter and win was the last sibling
3008     {
3009         siblings.Append(self);
3010     }
3011 }
3012
3013 // ----------------------------------------------------------------------------
3014 // focus handling
3015 // ----------------------------------------------------------------------------
3016
3017 /*static*/ wxWindow* wxWindowBase::FindFocus()
3018 {
3019     wxWindowBase *win = DoFindFocus();
3020     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3021 }
3022
3023 bool wxWindowBase::HasFocus() const
3024 {
3025     wxWindowBase *win = DoFindFocus();
3026     return win == this ||
3027            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3028 }
3029
3030 // ----------------------------------------------------------------------------
3031 // drag and drop
3032 // ----------------------------------------------------------------------------
3033
3034 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3035
3036 namespace
3037 {
3038
3039 class DragAcceptFilesTarget : public wxFileDropTarget
3040 {
3041 public:
3042     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3043
3044     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3045                              const wxArrayString& filenames)
3046     {
3047         wxDropFilesEvent event(wxEVT_DROP_FILES,
3048                                filenames.size(),
3049                                wxCArrayString(filenames).Release());
3050         event.SetEventObject(m_win);
3051         event.m_pos.x = x;
3052         event.m_pos.y = y;
3053
3054         return m_win->HandleWindowEvent(event);
3055     }
3056
3057 private:
3058     wxWindowBase * const m_win;
3059
3060     DECLARE_NO_COPY_CLASS(DragAcceptFilesTarget)
3061 };
3062
3063
3064 } // anonymous namespace
3065
3066 // Generic version of DragAcceptFiles(). It works by installing a simple
3067 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3068 // together with explicit SetDropTarget() calls.
3069 void wxWindowBase::DragAcceptFiles(bool accept)
3070 {
3071     if ( accept )
3072     {
3073         wxASSERT_MSG( !GetDropTarget(),
3074                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3075         SetDropTarget(new DragAcceptFilesTarget(this));
3076     }
3077     else
3078     {
3079         SetDropTarget(NULL);
3080     }
3081 }
3082
3083 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3084
3085 // ----------------------------------------------------------------------------
3086 // global functions
3087 // ----------------------------------------------------------------------------
3088
3089 wxWindow* wxGetTopLevelParent(wxWindow *win)
3090 {
3091     while ( win && !win->IsTopLevel() )
3092          win = win->GetParent();
3093
3094     return win;
3095 }
3096
3097 #if wxUSE_ACCESSIBILITY
3098 // ----------------------------------------------------------------------------
3099 // accessible object for windows
3100 // ----------------------------------------------------------------------------
3101
3102 // Can return either a child object, or an integer
3103 // representing the child element, starting from 1.
3104 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3105 {
3106     wxASSERT( GetWindow() != NULL );
3107     if (!GetWindow())
3108         return wxACC_FAIL;
3109
3110     return wxACC_NOT_IMPLEMENTED;
3111 }
3112
3113 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3114 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3115 {
3116     wxASSERT( GetWindow() != NULL );
3117     if (!GetWindow())
3118         return wxACC_FAIL;
3119
3120     wxWindow* win = NULL;
3121     if (elementId == 0)
3122     {
3123         win = GetWindow();
3124     }
3125     else
3126     {
3127         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3128         {
3129             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3130         }
3131         else
3132             return wxACC_FAIL;
3133     }
3134     if (win)
3135     {
3136         rect = win->GetRect();
3137         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3138             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3139         return wxACC_OK;
3140     }
3141
3142     return wxACC_NOT_IMPLEMENTED;
3143 }
3144
3145 // Navigates from fromId to toId/toObject.
3146 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3147                              int* WXUNUSED(toId), wxAccessible** toObject)
3148 {
3149     wxASSERT( GetWindow() != NULL );
3150     if (!GetWindow())
3151         return wxACC_FAIL;
3152
3153     switch (navDir)
3154     {
3155     case wxNAVDIR_FIRSTCHILD:
3156         {
3157             if (GetWindow()->GetChildren().GetCount() == 0)
3158                 return wxACC_FALSE;
3159             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3160             *toObject = childWindow->GetOrCreateAccessible();
3161
3162             return wxACC_OK;
3163         }
3164     case wxNAVDIR_LASTCHILD:
3165         {
3166             if (GetWindow()->GetChildren().GetCount() == 0)
3167                 return wxACC_FALSE;
3168             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3169             *toObject = childWindow->GetOrCreateAccessible();
3170
3171             return wxACC_OK;
3172         }
3173     case wxNAVDIR_RIGHT:
3174     case wxNAVDIR_DOWN:
3175     case wxNAVDIR_NEXT:
3176         {
3177             wxWindowList::compatibility_iterator node =
3178                 wxWindowList::compatibility_iterator();
3179             if (fromId == 0)
3180             {
3181                 // Can't navigate to sibling of this window
3182                 // if we're a top-level window.
3183                 if (!GetWindow()->GetParent())
3184                     return wxACC_NOT_IMPLEMENTED;
3185
3186                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3187             }
3188             else
3189             {
3190                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3191                     node = GetWindow()->GetChildren().Item(fromId-1);
3192             }
3193
3194             if (node && node->GetNext())
3195             {
3196                 wxWindow* nextWindow = node->GetNext()->GetData();
3197                 *toObject = nextWindow->GetOrCreateAccessible();
3198                 return wxACC_OK;
3199             }
3200             else
3201                 return wxACC_FALSE;
3202         }
3203     case wxNAVDIR_LEFT:
3204     case wxNAVDIR_UP:
3205     case wxNAVDIR_PREVIOUS:
3206         {
3207             wxWindowList::compatibility_iterator node =
3208                 wxWindowList::compatibility_iterator();
3209             if (fromId == 0)
3210             {
3211                 // Can't navigate to sibling of this window
3212                 // if we're a top-level window.
3213                 if (!GetWindow()->GetParent())
3214                     return wxACC_NOT_IMPLEMENTED;
3215
3216                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3217             }
3218             else
3219             {
3220                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3221                     node = GetWindow()->GetChildren().Item(fromId-1);
3222             }
3223
3224             if (node && node->GetPrevious())
3225             {
3226                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3227                 *toObject = previousWindow->GetOrCreateAccessible();
3228                 return wxACC_OK;
3229             }
3230             else
3231                 return wxACC_FALSE;
3232         }
3233     }
3234
3235     return wxACC_NOT_IMPLEMENTED;
3236 }
3237
3238 // Gets the name of the specified object.
3239 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3240 {
3241     wxASSERT( GetWindow() != NULL );
3242     if (!GetWindow())
3243         return wxACC_FAIL;
3244
3245     wxString title;
3246
3247     // If a child, leave wxWidgets to call the function on the actual
3248     // child object.
3249     if (childId > 0)
3250         return wxACC_NOT_IMPLEMENTED;
3251
3252     // This will eventually be replaced by specialised
3253     // accessible classes, one for each kind of wxWidgets
3254     // control or window.
3255 #if wxUSE_BUTTON
3256     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3257         title = ((wxButton*) GetWindow())->GetLabel();
3258     else
3259 #endif
3260         title = GetWindow()->GetName();
3261
3262     if (!title.empty())
3263     {
3264         *name = title;
3265         return wxACC_OK;
3266     }
3267     else
3268         return wxACC_NOT_IMPLEMENTED;
3269 }
3270
3271 // Gets the number of children.
3272 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3273 {
3274     wxASSERT( GetWindow() != NULL );
3275     if (!GetWindow())
3276         return wxACC_FAIL;
3277
3278     *childId = (int) GetWindow()->GetChildren().GetCount();
3279     return wxACC_OK;
3280 }
3281
3282 // Gets the specified child (starting from 1).
3283 // If *child is NULL and return value is wxACC_OK,
3284 // this means that the child is a simple element and
3285 // not an accessible object.
3286 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3287 {
3288     wxASSERT( GetWindow() != NULL );
3289     if (!GetWindow())
3290         return wxACC_FAIL;
3291
3292     if (childId == 0)
3293     {
3294         *child = this;
3295         return wxACC_OK;
3296     }
3297
3298     if (childId > (int) GetWindow()->GetChildren().GetCount())
3299         return wxACC_FAIL;
3300
3301     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3302     *child = childWindow->GetOrCreateAccessible();
3303     if (*child)
3304         return wxACC_OK;
3305     else
3306         return wxACC_FAIL;
3307 }
3308
3309 // Gets the parent, or NULL.
3310 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3311 {
3312     wxASSERT( GetWindow() != NULL );
3313     if (!GetWindow())
3314         return wxACC_FAIL;
3315
3316     wxWindow* parentWindow = GetWindow()->GetParent();
3317     if (!parentWindow)
3318     {
3319         *parent = NULL;
3320         return wxACC_OK;
3321     }
3322     else
3323     {
3324         *parent = parentWindow->GetOrCreateAccessible();
3325         if (*parent)
3326             return wxACC_OK;
3327         else
3328             return wxACC_FAIL;
3329     }
3330 }
3331
3332 // Performs the default action. childId is 0 (the action for this object)
3333 // or > 0 (the action for a child).
3334 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3335 // window (e.g. an edit control).
3336 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3337 {
3338     wxASSERT( GetWindow() != NULL );
3339     if (!GetWindow())
3340         return wxACC_FAIL;
3341
3342     return wxACC_NOT_IMPLEMENTED;
3343 }
3344
3345 // Gets the default action for this object (0) or > 0 (the action for a child).
3346 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3347 // string if there is no action.
3348 // The retrieved string describes the action that is performed on an object,
3349 // not what the object does as a result. For example, a toolbar button that prints
3350 // a document has a default action of "Press" rather than "Prints the current document."
3351 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3352 {
3353     wxASSERT( GetWindow() != NULL );
3354     if (!GetWindow())
3355         return wxACC_FAIL;
3356
3357     return wxACC_NOT_IMPLEMENTED;
3358 }
3359
3360 // Returns the description for this object or a child.
3361 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3362 {
3363     wxASSERT( GetWindow() != NULL );
3364     if (!GetWindow())
3365         return wxACC_FAIL;
3366
3367     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3368     if (!ht.empty())
3369     {
3370         *description = ht;
3371         return wxACC_OK;
3372     }
3373     return wxACC_NOT_IMPLEMENTED;
3374 }
3375
3376 // Returns help text for this object or a child, similar to tooltip text.
3377 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3378 {
3379     wxASSERT( GetWindow() != NULL );
3380     if (!GetWindow())
3381         return wxACC_FAIL;
3382
3383     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3384     if (!ht.empty())
3385     {
3386         *helpText = ht;
3387         return wxACC_OK;
3388     }
3389     return wxACC_NOT_IMPLEMENTED;
3390 }
3391
3392 // Returns the keyboard shortcut for this object or child.
3393 // Return e.g. ALT+K
3394 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3395 {
3396     wxASSERT( GetWindow() != NULL );
3397     if (!GetWindow())
3398         return wxACC_FAIL;
3399
3400     return wxACC_NOT_IMPLEMENTED;
3401 }
3402
3403 // Returns a role constant.
3404 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3405 {
3406     wxASSERT( GetWindow() != NULL );
3407     if (!GetWindow())
3408         return wxACC_FAIL;
3409
3410     // If a child, leave wxWidgets to call the function on the actual
3411     // child object.
3412     if (childId > 0)
3413         return wxACC_NOT_IMPLEMENTED;
3414
3415     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3416         return wxACC_NOT_IMPLEMENTED;
3417 #if wxUSE_STATUSBAR
3418     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3419         return wxACC_NOT_IMPLEMENTED;
3420 #endif
3421 #if wxUSE_TOOLBAR
3422     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3423         return wxACC_NOT_IMPLEMENTED;
3424 #endif
3425
3426     //*role = wxROLE_SYSTEM_CLIENT;
3427     *role = wxROLE_SYSTEM_CLIENT;
3428     return wxACC_OK;
3429
3430     #if 0
3431     return wxACC_NOT_IMPLEMENTED;
3432     #endif
3433 }
3434
3435 // Returns a state constant.
3436 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3437 {
3438     wxASSERT( GetWindow() != NULL );
3439     if (!GetWindow())
3440         return wxACC_FAIL;
3441
3442     // If a child, leave wxWidgets to call the function on the actual
3443     // child object.
3444     if (childId > 0)
3445         return wxACC_NOT_IMPLEMENTED;
3446
3447     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3448         return wxACC_NOT_IMPLEMENTED;
3449
3450 #if wxUSE_STATUSBAR
3451     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3452         return wxACC_NOT_IMPLEMENTED;
3453 #endif
3454 #if wxUSE_TOOLBAR
3455     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3456         return wxACC_NOT_IMPLEMENTED;
3457 #endif
3458
3459     *state = 0;
3460     return wxACC_OK;
3461
3462     #if 0
3463     return wxACC_NOT_IMPLEMENTED;
3464     #endif
3465 }
3466
3467 // Returns a localized string representing the value for the object
3468 // or child.
3469 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3470 {
3471     wxASSERT( GetWindow() != NULL );
3472     if (!GetWindow())
3473         return wxACC_FAIL;
3474
3475     return wxACC_NOT_IMPLEMENTED;
3476 }
3477
3478 // Selects the object or child.
3479 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3480 {
3481     wxASSERT( GetWindow() != NULL );
3482     if (!GetWindow())
3483         return wxACC_FAIL;
3484
3485     return wxACC_NOT_IMPLEMENTED;
3486 }
3487
3488 // Gets the window with the keyboard focus.
3489 // If childId is 0 and child is NULL, no object in
3490 // this subhierarchy has the focus.
3491 // If this object has the focus, child should be 'this'.
3492 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3493 {
3494     wxASSERT( GetWindow() != NULL );
3495     if (!GetWindow())
3496         return wxACC_FAIL;
3497
3498     return wxACC_NOT_IMPLEMENTED;
3499 }
3500
3501 #if wxUSE_VARIANT
3502 // Gets a variant representing the selected children
3503 // of this object.
3504 // Acceptable values:
3505 // - a null variant (IsNull() returns true)
3506 // - a list variant (GetType() == wxT("list")
3507 // - an integer representing the selected child element,
3508 //   or 0 if this object is selected (GetType() == wxT("long")
3509 // - a "void*" pointer to a wxAccessible child object
3510 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3511 {
3512     wxASSERT( GetWindow() != NULL );
3513     if (!GetWindow())
3514         return wxACC_FAIL;
3515
3516     return wxACC_NOT_IMPLEMENTED;
3517 }
3518 #endif // wxUSE_VARIANT
3519
3520 #endif // wxUSE_ACCESSIBILITY
3521
3522 // ----------------------------------------------------------------------------
3523 // RTL support
3524 // ----------------------------------------------------------------------------
3525
3526 wxCoord
3527 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3528                                        wxCoord width,
3529                                        wxCoord widthTotal) const
3530 {
3531     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3532     {
3533         x = widthTotal - x - width;
3534     }
3535
3536     return x;
3537 }
3538
3539