src/common/wincmn.cpp

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