]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/wincmn.cpp
fix typos and update MSW code to use new wxPENSTYLE_* enum values
[wxWidgets.git] / src / common / wincmn.cpp
index 20e32b7e83c5f832c3a669e069f5f31adfec3207..5b3a22d1d8ea93a73c381ea4bd1335275e368264 100644 (file)
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        common/window.cpp
+// Name:        src/common/window.cpp
 // Purpose:     common (to all ports) wxWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Modified by:
 // Created:     13/07/98
 // RCS-ID:      $Id$
-// Copyright:   (c) wxWindows team
-// Licence:     wxWindows license
+// Copyright:   (c) wxWidgets team
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "windowbase.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
     #include "wx/log.h"
     #include "wx/intl.h"
     #include "wx/frame.h"
-    #include "wx/defs.h"
     #include "wx/window.h"
+    #include "wx/control.h"
     #include "wx/checkbox.h"
     #include "wx/radiobut.h"
+    #include "wx/statbox.h"
+    #include "wx/textctrl.h"
     #include "wx/settings.h"
     #include "wx/dialog.h"
-#endif //WX_PRECOMP
-
-#if wxUSE_CONSTRAINTS
+    #include "wx/msgdlg.h"
+    #include "wx/statusbr.h"
+    #include "wx/toolbar.h"
+    #include "wx/dcclient.h"
+    #include "wx/scrolbar.h"
     #include "wx/layout.h"
     #include "wx/sizer.h"
-#endif // wxUSE_CONSTRAINTS
+    #include "wx/menu.h"
+#endif //WX_PRECOMP
 
 #if wxUSE_DRAG_AND_DROP
     #include "wx/dnd.h"
 #endif // wxUSE_DRAG_AND_DROP
 
+#if wxUSE_ACCESSIBILITY
+    #include "wx/access.h"
+#endif
+
+#if wxUSE_HELP
+    #include "wx/cshelp.h"
+#endif // wxUSE_HELP
+
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
 #endif // wxUSE_TOOLTIPS
     #include "wx/caret.h"
 #endif // wxUSE_CARET
 
+#if wxUSE_SYSTEM_OPTIONS
+    #include "wx/sysopt.h"
+#endif
+
+// For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
+// The gtk includes don't pull any other headers in, at least not on my system - MR
+#ifdef __WXGTK__
+    #ifdef __WXGTK20__
+        #include <gtk/gtkversion.h>
+    #else
+        #include <gtk/gtkfeatures.h>
+    #endif
+#endif
+
+#include "wx/platinfo.h"
+
+// Windows List
+WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
+
+// globals
+#if wxUSE_MENUS
+wxMenu *wxCurrentPopupMenu = NULL;
+#endif // wxUSE_MENUS
+
 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------
 
-int wxWindowBase::ms_lastControlId = -200;
 
 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 
@@ -73,6 +105,12 @@ IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
+    EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
+
+#if wxUSE_HELP
+    EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
+#endif // wxUSE_HELP
+
 END_EVENT_TABLE()
 
 // ============================================================================
@@ -84,26 +122,24 @@ END_EVENT_TABLE()
 // ----------------------------------------------------------------------------
 
 // the default initialization
-void wxWindowBase::InitBase()
+wxWindowBase::wxWindowBase()
 {
     // no window yet, no parent nor children
     m_parent = (wxWindow *)NULL;
-    m_windowId = -1;
-    m_children.DeleteContents( FALSE ); // don't auto delete node data
+    m_windowId = wxID_ANY;
 
     // no constraints on the minimal window size
     m_minWidth =
+    m_maxWidth = wxDefaultCoord;
     m_minHeight =
-    m_maxWidth =
-    m_maxHeight = -1;
+    m_maxHeight = wxDefaultCoord;
 
-    // window is created enabled but it's not visible yet
-    m_isShown = FALSE;
-    m_isEnabled = TRUE;
+    // invalidiated cache value
+    m_bestSizeCache = wxDefaultSize;
 
-    // no client data (yet)
-    m_clientData = NULL;
-    m_clientDataType = ClientData_None;
+    // window are created enabled and visible by default
+    m_isShown =
+    m_isEnabled = true;
 
     // the default event handler is just this window
     m_eventHandler = this;
@@ -113,28 +149,31 @@ void wxWindowBase::InitBase()
     m_windowValidator = (wxValidator *) NULL;
 #endif // wxUSE_VALIDATORS
 
-    // use the system default colours
-    wxSystemSettings settings;
-
-    m_backgroundColour = settings.GetSystemColour(wxSYS_COLOUR_BTNFACE);
-    m_foregroundColour = *wxBLACK;  // TODO take this from sys settings too?
-    m_font = *wxSWISS_FONT;         //      and this?
+    // the colours/fonts are default for now, so leave m_font,
+    // m_backgroundColour and m_foregroundColour uninitialized and set those
+    m_hasBgCol =
+    m_hasFgCol =
+    m_hasFont = false;
+    m_inheritBgCol =
+    m_inheritFgCol =
+    m_inheritFont = false;
 
     // no style bits
+    m_exStyle =
     m_windowStyle = 0;
 
-    // an optimization for the event processing: checking this flag is much
-    // faster than using IsKindOf(CLASSINFO(wxWindow))
-    m_isWindow = TRUE;
+    m_backgroundStyle = wxBG_STYLE_SYSTEM;
 
 #if wxUSE_CONSTRAINTS
     // no constraints whatsoever
     m_constraints = (wxLayoutConstraints *) NULL;
     m_constraintsInvolvedIn = (wxWindowList *) NULL;
-    m_windowSizer = (wxSizer *) NULL;
-    m_autoLayout = FALSE;
 #endif // wxUSE_CONSTRAINTS
 
+    m_windowSizer = (wxSizer *) NULL;
+    m_containingSizer = (wxSizer *) NULL;
+    m_autoLayout = false;
+
 #if wxUSE_DRAG_AND_DROP
     m_dropTarget = (wxDropTarget *)NULL;
 #endif // wxUSE_DRAG_AND_DROP
@@ -146,6 +185,34 @@ void wxWindowBase::InitBase()
 #if wxUSE_CARET
     m_caret = (wxCaret *)NULL;
 #endif // wxUSE_CARET
+
+#if wxUSE_PALETTE
+    m_hasCustomPalette = false;
+#endif // wxUSE_PALETTE
+
+#if wxUSE_ACCESSIBILITY
+    m_accessible = NULL;
+#endif
+
+    m_virtualSize = wxDefaultSize;
+
+    m_scrollHelper = (wxScrollHelper *) NULL;
+
+    m_windowVariant = wxWINDOW_VARIANT_NORMAL;
+#if wxUSE_SYSTEM_OPTIONS
+    if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
+    {
+       m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
+    }
+#endif
+
+    // Whether we're using the current theme for this window (wxGTK only for now)
+    m_themeEnabled = false;
+
+    // VZ: this one shouldn't exist...
+    m_isBeingDeleted = false;
+
+    m_freezeCount = 0;
 }
 
 // common part of window creation process
@@ -154,23 +221,80 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
                               const wxPoint& WXUNUSED(pos),
                               const wxSize& WXUNUSED(size),
                               long style,
-                              const wxValidator& validator,
+                              const wxValidator& wxVALIDATOR_PARAM(validator),
                               const wxString& name)
 {
-    // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
-    // member variables - check that it has been called (will catch the case
-    // when a new ctor is added which doesn't call InitWindow)
-    wxASSERT_MSG( m_isWindow, T("Init() must have been called before!") );
+#if wxUSE_STATBOX
+    // wxGTK doesn't allow to create controls with static box as the parent so
+    // this will result in a crash when the program is ported to wxGTK so warn
+    // the user about it
+
+    // if you get this assert, the correct solution is to create the controls
+    // as siblings of the static box
+    wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
+                  _T("wxStaticBox can't be used as a window parent!") );
+#endif // wxUSE_STATBOX
+
+    // ids are limited to 16 bits under MSW so if you care about portability,
+    // it's not a good idea to use ids out of this range (and negative ids are
+    // reserved for wxWidgets own usage)
+    wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
+                  (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
+                  _T("invalid id value") );
 
     // generate a new id if the user doesn't care about it
-    m_windowId = id == -1 ? NewControlId() : id;
+    if ( id == wxID_ANY )
+    {
+        m_windowId = NewControlId();
+    }
+    else // valid id specified
+    {
+        m_windowId = id;
+    }
+
+    // don't use SetWindowStyleFlag() here, this function should only be called
+    // to change the flag after creation as it tries to reflect the changes in
+    // flags by updating the window dynamically and we don't need this here
+    m_windowStyle = style;
 
     SetName(name);
-    SetWindowStyleFlag(style);
     SetParent(parent);
+
+#if wxUSE_VALIDATORS
     SetValidator(validator);
+#endif // wxUSE_VALIDATORS
+
+    // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
+    // have it too - like this it's possible to set it only in the top level
+    // dialog/frame and all children will inherit it by defult
+    if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
+    {
+        SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
+    }
+
+    return true;
+}
+
+bool wxWindowBase::ToggleWindowStyle(int flag)
+{
+    wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
+
+    bool rc;
+    long style = GetWindowStyleFlag();
+    if ( style & flag )
+    {
+        style &= ~flag;
+        rc = false;
+    }
+    else // currently off
+    {
+        style |= flag;
+        rc = true;
+    }
 
-    return TRUE;
+    SetWindowStyleFlag(style);
+
+    return rc;
 }
 
 // ----------------------------------------------------------------------------
@@ -180,6 +304,8 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
 // common clean up
 wxWindowBase::~wxWindowBase()
 {
+    wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
+
     // FIXME if these 2 cases result from programming errors in the user code
     //       we should probably assert here instead of silently fixing them
 
@@ -189,34 +315,29 @@ wxWindowBase::~wxWindowBase()
 
     // Just in case we've loaded a top-level window via LoadNativeDialog but
     // we weren't a dialog class
-    wxTopLevelWindows.DeleteObject(this);
+    wxTopLevelWindows.DeleteObject((wxWindow*)this);
 
-    wxASSERT_MSG( GetChildren().GetCount() == 0, T("children not destroyed") );
+#if wxUSE_MENUS
+    // The associated popup menu can still be alive, disassociate from it in
+    // this case
+    if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
+        wxCurrentPopupMenu->SetInvokingWindow(NULL);
+#endif // wxUSE_MENUS
 
-    // make sure that there are no dangling pointers left pointing to us
-    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
-    if ( panel )
-    {
-        if ( panel->GetLastFocus() == this )
-        {
-            panel->SetLastFocus((wxWindow *)NULL);
-        }
-    }
+    wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
+
+    // notify the parent about this window destruction
+    if ( m_parent )
+        m_parent->RemoveChild(this);
 
 #if wxUSE_CARET
-    if ( m_caret )
-        delete m_caret;
+    delete m_caret;
 #endif // wxUSE_CARET
 
 #if wxUSE_VALIDATORS
-    if ( m_windowValidator )
-        delete m_windowValidator;
+    delete m_windowValidator;
 #endif // wxUSE_VALIDATORS
 
-    // we only delete object data, not untyped
-    if ( m_clientDataType == ClientData_Object )
-        delete m_clientObject;
-
 #if wxUSE_CONSTRAINTS
     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
     // at deleted windows as they delete themselves.
@@ -230,47 +351,63 @@ wxWindowBase::~wxWindowBase()
         delete m_constraints;
         m_constraints = NULL;
     }
+#endif // wxUSE_CONSTRAINTS
 
-    if ( m_windowSizer )
-        delete m_windowSizer;
+    if ( m_containingSizer )
+        m_containingSizer->Detach( (wxWindow*)this );
 
-#endif // wxUSE_CONSTRAINTS
+    delete m_windowSizer;
 
 #if wxUSE_DRAG_AND_DROP
-    if ( m_dropTarget )
-        delete m_dropTarget;
+    delete m_dropTarget;
 #endif // wxUSE_DRAG_AND_DROP
 
 #if wxUSE_TOOLTIPS
-    if ( m_tooltip )
-        delete m_tooltip;
+    delete m_tooltip;
 #endif // wxUSE_TOOLTIPS
+
+#if wxUSE_ACCESSIBILITY
+    delete m_accessible;
+#endif
+
+#if wxUSE_HELP
+    // NB: this has to be called unconditionally, because we don't know
+    //     whether this window has associated help text or not
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+        helpProvider->RemoveHelp(this);
+#endif
+}
+
+void wxWindowBase::SendDestroyEvent()
+{
+    wxWindowDestroyEvent event;
+    event.SetEventObject(this);
+    event.SetId(GetId());
+    GetEventHandler()->ProcessEvent(event);
 }
 
 bool wxWindowBase::Destroy()
 {
     delete this;
 
-    return TRUE;
+    return true;
 }
 
 bool wxWindowBase::Close(bool force)
 {
     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
     event.SetEventObject(this);
-#if WXWIN_COMPATIBILITY
-    event.SetForce(force);
-#endif // WXWIN_COMPATIBILITY
     event.SetCanVeto(!force);
 
-    // return FALSE if window wasn't closed because the application vetoed the
+    // return false if window wasn't closed because the application vetoed the
     // close event
     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 }
 
 bool wxWindowBase::DestroyChildren()
 {
-    wxWindowList::Node *node;
+    wxWindowList::compatibility_iterator node;
     for ( ;; )
     {
         // we iterate until the list becomes empty
@@ -280,1031 +417,2908 @@ bool wxWindowBase::DestroyChildren()
 
         wxWindow *child = node->GetData();
 
-        wxASSERT_MSG( child, T("children list contains empty nodes") );
-
+        // note that we really want to call delete and not ->Destroy() here
+        // because we want to delete the child immediately, before we are
+        // deleted, and delayed deletion would result in problems as our (top
+        // level) child could outlive its parent
         delete child;
 
         wxASSERT_MSG( !GetChildren().Find(child),
-                      T("child didn't remove itself using RemoveChild()") );
+                      wxT("child didn't remove itself using RemoveChild()") );
     }
 
-    return TRUE;
+    return true;
 }
 
 // ----------------------------------------------------------------------------
-// centre/fit the window
+// size/position related methods
 // ----------------------------------------------------------------------------
 
 // centre the window with respect to its parent in either (or both) directions
-void wxWindowBase::Centre(int direction)
+void wxWindowBase::DoCentre(int dir)
 {
-    int widthParent, heightParent;
+    wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
+                 _T("this method only implements centering child windows") );
 
-    wxWindow *parent = GetParent();
-    if ( !parent )
+    SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
+}
+
+// fits the window around the children
+void wxWindowBase::Fit()
+{
+    if ( !GetChildren().empty() )
     {
-        // no other choice
-        direction |= wxCENTRE_ON_SCREEN;
+        SetSize(GetBestSize());
     }
+    //else: do nothing if we have no children
+}
 
-    if ( direction & wxCENTRE_ON_SCREEN )
+// fits virtual size (ie. scrolled area etc.) around children
+void wxWindowBase::FitInside()
+{
+    if ( GetChildren().GetCount() > 0 )
     {
-        // centre with respect to the whole screen
-        wxDisplaySize(&widthParent, &heightParent);
+        SetVirtualSize( GetBestVirtualSize() );
     }
-    else
+}
+
+// On Mac, scrollbars are explicitly children.
+#ifdef __WXMAC__
+static bool wxHasRealChildren(const wxWindowBase* win)
+{
+    int realChildCount = 0;
+
+    for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
+          node;
+          node = node->GetNext() )
     {
-        // centre inside the parents rectangle
-        parent->GetClientSize(&widthParent, &heightParent);
+        wxWindow *win = node->GetData();
+        if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
+            realChildCount ++;
     }
+    return (realChildCount > 0);
+}
+#endif
 
-    int width, height;
-    GetSize(&width, &height);
+void wxWindowBase::InvalidateBestSize()
+{
+    m_bestSizeCache = wxDefaultSize;
+
+    // parent's best size calculation may depend on its children's
+    // as long as child window we are in is not top level window itself
+    // (because the TLW size is never resized automatically)
+    // so let's invalidate it as well to be safe:
+    if (m_parent && !IsTopLevel())
+        m_parent->InvalidateBestSize();
+}
 
-    int xNew = -1,
-        yNew = -1;
+// return the size best suited for the current window
+wxSize wxWindowBase::DoGetBestSize() const
+{
+    wxSize best;
 
-    if ( direction & wxHORIZONTAL )
-        xNew = (widthParent - width)/2;
+    if ( m_windowSizer )
+    {
+        best = m_windowSizer->GetMinSize();
+    }
+#if wxUSE_CONSTRAINTS
+    else if ( m_constraints )
+    {
+        wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 
-    if ( direction & wxVERTICAL )
-        yNew = (heightParent - height)/2;
+        // our minimal acceptable size is such that all our windows fit inside
+        int maxX = 0,
+            maxY = 0;
 
-    // controls are always centered on their parent because it doesn't make
-    // sense to centre them on the screen
-    if ( !(direction & wxCENTRE_ON_SCREEN) || wxDynamicCast(this, wxControl) )
-    {
-        // theo nly chance to get this is to have a wxControl without parent
-        wxCHECK_RET( parent, T("a control must have a parent") );
+        for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
+        {
+            wxLayoutConstraints *c = node->GetData()->GetConstraints();
+            if ( !c )
+            {
+                // it's not normal that we have an unconstrained child, but
+                // what can we do about it?
+                continue;
+            }
 
-        // adjust to the parents client area origin
-        wxPoint posParent = parent->ClientToScreen(wxPoint(0, 0));
+            int x = c->right.GetValue(),
+                y = c->bottom.GetValue();
 
-        xNew += posParent.x;
-        yNew += posParent.y;
-    }
+            if ( x > maxX )
+                maxX = x;
 
-    Move(xNew, yNew);
-}
+            if ( y > maxY )
+                maxY = y;
 
-// fits the window around the children
-void wxWindowBase::Fit()
-{
-    int maxX = 0,
-        maxY = 0;
+            // TODO: we must calculate the overlaps somehow, otherwise we
+            //       will never return a size bigger than the current one :-(
+        }
 
-    for ( wxWindowList::Node *node = GetChildren().GetFirst();
-          node;
-          node = node->GetNext() )
+        best = wxSize(maxX, maxY);
+    }
+#endif // wxUSE_CONSTRAINTS
+    else if ( !GetChildren().empty()
+#ifdef __WXMAC__
+              && wxHasRealChildren(this)
+#endif
+              )
     {
-        wxWindow *win = node->GetData();
-        if ( win->IsTopLevel() )
+        // our minimal acceptable size is such that all our visible child
+        // windows fit inside
+        int maxX = 0,
+            maxY = 0;
+
+        for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
         {
-            // dialogs and frames lie in different top level windows - don't
-            // deal with them here
-            continue;
+            wxWindow *win = node->GetData();
+            if ( win->IsTopLevel()
+                    || !win->IsShown()
+#if wxUSE_STATUSBAR
+                        || wxDynamicCast(win, wxStatusBar)
+#endif // wxUSE_STATUSBAR
+               )
+            {
+                // dialogs and frames lie in different top level windows -
+                // don't deal with them here; as for the status bars, they
+                // don't lie in the client area at all
+                continue;
+            }
+
+            int wx, wy, ww, wh;
+            win->GetPosition(&wx, &wy);
+
+            // if the window hadn't been positioned yet, assume that it is in
+            // the origin
+            if ( wx == wxDefaultCoord )
+                wx = 0;
+            if ( wy == wxDefaultCoord )
+                wy = 0;
+
+            win->GetSize(&ww, &wh);
+            if ( wx + ww > maxX )
+                maxX = wx + ww;
+            if ( wy + wh > maxY )
+                maxY = wy + wh;
         }
 
-        int wx, wy, ww, wh;
-        win->GetPosition(&wx, &wy);
-        win->GetSize(&ww, &wh);
-        if ( wx + ww > maxX )
-            maxX = wx + ww;
-        if ( wy + wh > maxY )
-            maxY = wy + wh;
+        best = wxSize(maxX, maxY);
     }
+    else // ! has children
+    {
+        // for a generic window there is no natural best size so, if the
+        // minimal size is not set, use the current size but take care to
+        // remember it as minimal size for the next time because our best size
+        // should be constant: otherwise we could get into a situation when the
+        // window is initially at some size, then expanded to a larger size and
+        // then, when the containing window is shrunk back (because our initial
+        // best size had been used for computing the parent min size), we can't
+        // be shrunk back any more because our best size is now bigger
+        wxSize size = GetMinSize();
+        if ( !size.IsFullySpecified() )
+        {
+            size.SetDefaults(GetSize());
+            wxConstCast(this, wxWindowBase)->SetMinSize(size);
+        }
 
-    // leave a margin
-    SetClientSize(maxX + 7, maxY + 14);
-}
+        // return as-is, unadjusted by the client size difference.
+        return size;
+    }
 
-// set the min/max size of the window
+    // Add any difference between size and client size
+    wxSize diff = GetSize() - GetClientSize();
+    best.x += wxMax(0, diff.x);
+    best.y += wxMax(0, diff.y);
 
-void wxWindowBase::SetSizeHints(int minW, int minH,
-                                int maxW, int maxH,
-                                int WXUNUSED(incW), int WXUNUSED(incH))
-{
-    m_minWidth = minW;
-    m_maxWidth = maxW;
-    m_minHeight = minH;
-    m_maxHeight = maxH;
+    return best;
 }
 
-// ----------------------------------------------------------------------------
-// show/hide/enable/disable the window
-// ----------------------------------------------------------------------------
-
-bool wxWindowBase::Show(bool show)
+// helper of GetWindowBorderSize(): as many ports don't implement support for
+// wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
+// fallbacks in this case
+static int wxGetMetricOrDefault(wxSystemMetric what)
 {
-    if ( show != m_isShown )
-    {
-        m_isShown = show;
-
-        return TRUE;
-    }
-    else
+    int rc = wxSystemSettings::GetMetric(what);
+    if ( rc == -1 )
     {
-        return FALSE;
+        switch ( what )
+        {
+            case wxSYS_BORDER_X:
+            case wxSYS_BORDER_Y:
+                // 2D border is by default 1 pixel wide
+                rc = 1;
+                break;
+
+            case wxSYS_EDGE_X:
+            case wxSYS_EDGE_Y:
+                // 3D borders are by default 2 pixels
+                rc = 2;
+                break;
+
+            default:
+                wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
+                rc = 0;
+        }
     }
+
+    return rc;
 }
 
-bool wxWindowBase::Enable(bool enable)
+wxSize wxWindowBase::GetWindowBorderSize() const
 {
-    if ( enable != m_isEnabled )
+    wxSize size;
+
+    switch ( GetBorder() )
     {
-        m_isEnabled = enable;
+        case wxBORDER_NONE:
+            // nothing to do, size is already (0, 0)
+            break;
+
+        case wxBORDER_SIMPLE:
+        case wxBORDER_STATIC:
+            size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
+            size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
+            break;
+
+        case wxBORDER_SUNKEN:
+        case wxBORDER_RAISED:
+            size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X),
+                           wxGetMetricOrDefault(wxSYS_BORDER_X));
+            size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y),
+                           wxGetMetricOrDefault(wxSYS_BORDER_Y));
+            break;
 
-        return TRUE;
+        case wxBORDER_DOUBLE:
+            size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
+                        wxGetMetricOrDefault(wxSYS_BORDER_X);
+            size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
+                        wxGetMetricOrDefault(wxSYS_BORDER_Y);
+            break;
+
+        default:
+            wxFAIL_MSG(_T("Unknown border style."));
+            break;
     }
-    else
+
+    // we have borders on both sides
+    return size*2;
+}
+
+wxSize wxWindowBase::GetEffectiveMinSize() const
+{
+    // merge the best size with the min size, giving priority to the min size
+    wxSize min = GetMinSize();
+    if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
     {
-        return FALSE;
+        wxSize best = GetBestSize();
+        if (min.x == wxDefaultCoord) min.x =  best.x;
+        if (min.y == wxDefaultCoord) min.y =  best.y;
     }
+    return min;
 }
-// ----------------------------------------------------------------------------
-// RTTI
-// ----------------------------------------------------------------------------
 
-bool wxWindowBase::IsTopLevel() const
+
+void wxWindowBase::SetInitialSize(const wxSize& size)
 {
-    return wxDynamicCast(this, wxFrame) || wxDynamicCast(this, wxDialog);
+    // Set the min size to the size passed in.  This will usually either be
+    // wxDefaultSize or the size passed to this window's ctor/Create function.
+    SetMinSize(size);
+
+    // Merge the size with the best size if needed
+    wxSize best = GetEffectiveMinSize();
+
+    // If the current size doesn't match then change it
+    if (GetSize() != best)
+        SetSize(best);
 }
 
-// ----------------------------------------------------------------------------
-// reparenting the window
-// ----------------------------------------------------------------------------
 
-void wxWindowBase::AddChild(wxWindowBase *child)
+// by default the origin is not shifted
+wxPoint wxWindowBase::GetClientAreaOrigin() const
+{
+    return wxPoint(0,0);
+}
+
+wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 {
-    wxCHECK_RET( child, T("can't add a NULL child") );
+    const wxSize diff(GetSize() - GetClientSize());
 
-    GetChildren().Append(child);
-    child->SetParent(this);
+    return wxSize(size.x == -1 ? -1 : size.x + diff.x,
+                  size.y == -1 ? -1 : size.y + diff.y);
 }
 
-void wxWindowBase::RemoveChild(wxWindowBase *child)
+wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 {
-    wxCHECK_RET( child, T("can't remove a NULL child") );
+    const wxSize diff(GetSize() - GetClientSize());
 
-    GetChildren().DeleteObject(child);
-    child->SetParent((wxWindow *)NULL);
+    return wxSize(size.x == -1 ? -1 : size.x - diff.x,
+                  size.y == -1 ? -1 : size.y - diff.y);
 }
 
-bool wxWindowBase::Reparent(wxWindowBase *newParent)
+void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 {
-    wxWindow *oldParent = GetParent();
-    if ( newParent == oldParent )
+    if ( m_windowVariant != variant )
     {
-        // nothing done
-        return FALSE;
-    }
+        m_windowVariant = variant;
 
-    // unlink this window from the existing parent.
-    if ( oldParent )
-    {
-        oldParent->RemoveChild(this);
-    }
-    else
-    {
-        wxTopLevelWindows.DeleteObject(this);
+        DoSetWindowVariant(variant);
     }
+}
 
-    // add it to the new one
-    if ( newParent )
-    {
-        newParent->AddChild(this);
-    }
-    else
+void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
+{
+    // adjust the font height to correspond to our new variant (notice that
+    // we're only called if something really changed)
+    wxFont font = GetFont();
+    int size = font.GetPointSize();
+    switch ( variant )
     {
-        wxTopLevelWindows.Append(this);
-    }
+        case wxWINDOW_VARIANT_NORMAL:
+            break;
 
-    return TRUE;
-}
+        case wxWINDOW_VARIANT_SMALL:
+            size *= 3;
+            size /= 4;
+            break;
 
-// ----------------------------------------------------------------------------
-// event handler stuff
-// ----------------------------------------------------------------------------
+        case wxWINDOW_VARIANT_MINI:
+            size *= 2;
+            size /= 3;
+            break;
 
-void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
-{
-    handler->SetNextHandler(GetEventHandler());
-    SetEventHandler(handler);
-}
+        case wxWINDOW_VARIANT_LARGE:
+            size *= 5;
+            size /= 4;
+            break;
 
-wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
-{
-    wxEvtHandler *handlerA = GetEventHandler();
-    if ( handlerA )
-    {
-        wxEvtHandler *handlerB = handlerA->GetNextHandler();
-        handlerA->SetNextHandler((wxEvtHandler *)NULL);
-        SetEventHandler(handlerB);
-        if ( deleteHandler )
-        {
-            delete handlerA;
-            handlerA = (wxEvtHandler *)NULL;
-        }
+        default:
+            wxFAIL_MSG(_T("unexpected window variant"));
+            break;
     }
 
-    return handlerA;
+    font.SetPointSize(size);
+    SetFont(font);
 }
 
-// ----------------------------------------------------------------------------
-// cursors, fonts &c
-// ----------------------------------------------------------------------------
-
-bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
+void wxWindowBase::DoSetSizeHints( int minW, int minH,
+                                   int maxW, int maxH,
+                                   int WXUNUSED(incW), int WXUNUSED(incH) )
 {
-    if ( !colour.Ok() || (colour == m_backgroundColour) )
-        return FALSE;
+    wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
+                    (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
+                 _T("min width/height must be less than max width/height!") );
 
-    m_backgroundColour = colour;
-
-    return TRUE;
+    m_minWidth = minW;
+    m_maxWidth = maxW;
+    m_minHeight = minH;
+    m_maxHeight = maxH;
 }
 
-bool wxWindowBase::SetForegroundColour( const wxColour &colour )
-{
-    if ( !colour.Ok() || (colour == m_foregroundColour) )
-        return FALSE;
 
-    m_foregroundColour = colour;
+#if WXWIN_COMPATIBILITY_2_8
+void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
+                                       int WXUNUSED(maxW), int WXUNUSED(maxH))
+{
+}
 
-    return TRUE;
+void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
+                                       const wxSize& WXUNUSED(maxsize))
+{
 }
+#endif // WXWIN_COMPATIBILITY_2_8
 
-bool wxWindowBase::SetCursor(const wxCursor& cursor)
+void wxWindowBase::DoSetVirtualSize( int x, int y )
 {
-    // don't try to set invalid cursor, always fall back to the default
-    const wxCursor& cursorOk = cursor.Ok() ? cursor : *wxSTANDARD_CURSOR;
+    m_virtualSize = wxSize(x, y);
+}
 
-    if ( (wxCursor&)cursorOk == m_cursor )
-    {
-        // no change
-        return FALSE;
-    }
+wxSize wxWindowBase::DoGetVirtualSize() const
+{
+    // we should use the entire client area so if it is greater than our
+    // virtual size, expand it to fit (otherwise if the window is big enough we
+    // wouldn't be using parts of it)
+    wxSize size = GetClientSize();
+    if ( m_virtualSize.x > size.x )
+        size.x = m_virtualSize.x;
 
-    m_cursor = cursorOk;
+    if ( m_virtualSize.y >= size.y )
+        size.y = m_virtualSize.y;
 
-    return TRUE;
+    return size;
 }
 
-bool wxWindowBase::SetFont(const wxFont& font)
+void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 {
-    // don't try to set invalid font, always fall back to the default
-    const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
+    // screen position is the same as (0, 0) in client coords for non TLWs (and
+    // TLWs override this method)
+    if ( x )
+        *x = 0;
+    if ( y )
+        *y = 0;
+
+    ClientToScreen(x, y);
+}
 
-    if ( (wxFont&)fontOk == m_font )
+// ----------------------------------------------------------------------------
+// show/hide/enable/disable the window
+// ----------------------------------------------------------------------------
+
+bool wxWindowBase::Show(bool show)
+{
+    if ( show != m_isShown )
     {
-        // no change
-        return FALSE;
-    }
+        m_isShown = show;
 
-    m_font = fontOk;
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
 
-    return TRUE;
+bool wxWindowBase::IsEnabled() const
+{
+    return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 }
 
-#if wxUSE_CARET
-void wxWindowBase::SetCaret(wxCaret *caret)
+void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 {
-    if ( m_caret )
+#ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
+    DoEnable(enabled);
+#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
+
+    OnEnabled(enabled);
+
+    // If we are top-level then the logic doesn't apply - otherwise
+    // showing a modal dialog would result in total greying out (and ungreying
+    // out later) of everything which would be really ugly
+    if ( IsTopLevel() )
+        return;
+
+    for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+          node;
+          node = node->GetNext() )
     {
-        delete m_caret;
+        wxWindowBase * const child = node->GetData();
+        if ( !child->IsTopLevel() && child->IsThisEnabled() )
+            child->NotifyWindowOnEnableChange(enabled);
     }
+}
 
-    m_caret = caret;
+bool wxWindowBase::Enable(bool enable)
+{
+    if ( enable == IsThisEnabled() )
+        return false;
 
-    if ( m_caret )
+    m_isEnabled = enable;
+
+#ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
+    DoEnable(enable);
+#else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
+    wxWindowBase * const parent = GetParent();
+    if( !IsTopLevel() && parent && !parent->IsEnabled() )
     {
-        wxASSERT_MSG( m_caret->GetWindow() == this,
-                      T("caret should be created associated to this window") );
+        return true;
     }
+#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
+
+    NotifyWindowOnEnableChange(enable);
+
+    return true;
+}
+
+bool wxWindowBase::IsShownOnScreen() const
+{
+    // A window is shown on screen if it itself is shown and so are all its
+    // parents. But if a window is toplevel one, then its always visible on
+    // screen if IsShown() returns true, even if it has a hidden parent.
+    return IsShown() &&
+           (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 }
-#endif // wxUSE_CARET
 
-#if wxUSE_VALIDATORS
 // ----------------------------------------------------------------------------
-// validators
+// RTTI
 // ----------------------------------------------------------------------------
 
-void wxWindowBase::SetValidator(const wxValidator& validator)
+bool wxWindowBase::IsTopLevel() const
 {
-    if ( m_windowValidator )
-        delete m_windowValidator;
-
-    m_windowValidator = (wxValidator *)validator.Clone();
-
-    if ( m_windowValidator )
-        m_windowValidator->SetWindow(this) ;
+    return false;
 }
-#endif // wxUSE_VALIDATORS
 
 // ----------------------------------------------------------------------------
-// update region testing
+// Freeze/Thaw
 // ----------------------------------------------------------------------------
 
-bool wxWindowBase::IsExposed(int x, int y) const
+void wxWindowBase::Freeze()
 {
-    return m_updateRegion.Contains(x, y) != wxOutRegion;
+    if ( !m_freezeCount++ )
+    {
+        // physically freeze this window:
+        DoFreeze();
+
+        // and recursively freeze all children:
+        for ( wxWindowList::iterator i = GetChildren().begin();
+              i != GetChildren().end(); ++i )
+        {
+            wxWindow *child = *i;
+            if ( child->IsTopLevel() )
+                continue;
+
+            child->Freeze();
+        }
+    }
 }
 
-bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
+void wxWindowBase::Thaw()
 {
-    return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
+    wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
+
+    if ( !--m_freezeCount )
+    {
+        // recursively thaw all children:
+        for ( wxWindowList::iterator i = GetChildren().begin();
+              i != GetChildren().end(); ++i )
+        {
+            wxWindow *child = *i;
+            if ( child->IsTopLevel() )
+                continue;
+
+            child->Thaw();
+        }
+
+        // physically thaw this window:
+        DoThaw();
+    }
 }
 
 // ----------------------------------------------------------------------------
-// find window by id or name
+// reparenting the window
 // ----------------------------------------------------------------------------
 
-wxWindow *wxWindowBase::FindWindow( long id )
+void wxWindowBase::AddChild(wxWindowBase *child)
 {
-    if ( id == m_windowId )
-        return (wxWindow *)this;
+    wxCHECK_RET( child, wxT("can't add a NULL child") );
 
-    wxWindowBase *res = (wxWindow *)NULL;
-    wxWindowList::Node *node;
-    for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
-    {
-        wxWindowBase *child = node->GetData();
-        res = child->FindWindow( id );
-    }
+    // this should never happen and it will lead to a crash later if it does
+    // because RemoveChild() will remove only one node from the children list
+    // and the other(s) one(s) will be left with dangling pointers in them
+    wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 
-    return (wxWindow *)res;
+    GetChildren().Append((wxWindow*)child);
+    child->SetParent(this);
+
+    // adding a child while frozen will assert when thawn, so freeze it as if
+    // it had been already present when we were frozen
+    if ( IsFrozen() && !child->IsTopLevel() )
+        child->Freeze();
 }
 
-wxWindow *wxWindowBase::FindWindow( const wxString& name )
+void wxWindowBase::RemoveChild(wxWindowBase *child)
 {
-    if ( name == m_windowName )
-        return (wxWindow *)this;
+    wxCHECK_RET( child, wxT("can't remove a NULL child") );
 
-    wxWindowBase *res = (wxWindow *)NULL;
-    wxWindowList::Node *node;
-    for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
+    // removing a child while frozen may result in permanently frozen window
+    // if used e.g. from Reparent(), so thaw it
+    if ( IsFrozen() && !child->IsTopLevel() )
+        child->Thaw();
+
+    GetChildren().DeleteObject((wxWindow *)child);
+    child->SetParent(NULL);
+}
+
+bool wxWindowBase::Reparent(wxWindowBase *newParent)
+{
+    wxWindow *oldParent = GetParent();
+    if ( newParent == oldParent )
     {
-        wxWindow *child = node->GetData();
-        res = child->FindWindow(name);
+        // nothing done
+        return false;
     }
 
-    return (wxWindow *)res;
+    const bool oldEnabledState = IsEnabled();
+
+    // unlink this window from the existing parent.
+    if ( oldParent )
+    {
+        oldParent->RemoveChild(this);
+    }
+    else
+    {
+        wxTopLevelWindows.DeleteObject((wxWindow *)this);
+    }
+
+    // add it to the new one
+    if ( newParent )
+    {
+        newParent->AddChild(this);
+    }
+    else
+    {
+        wxTopLevelWindows.Append((wxWindow *)this);
+    }
+
+    // We need to notify window (and its subwindows) if by changing the parent
+    // we also change our enabled/disabled status.
+    const bool newEnabledState = IsEnabled();
+    if ( newEnabledState != oldEnabledState )
+    {
+        NotifyWindowOnEnableChange(newEnabledState);
+    }
+
+    return true;
 }
 
 // ----------------------------------------------------------------------------
-// dialog oriented functions
+// event handler stuff
 // ----------------------------------------------------------------------------
 
-void wxWindowBase::MakeModal(bool modal)
+void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 {
-    // Disable all other windows
-    if ( IsTopLevel() )
-    {
-        wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
-        while (node)
-        {
-            wxWindow *win = node->GetData();
-            if (win != this)
-                win->Enable(!modal);
+    wxEvtHandler *handlerOld = GetEventHandler();
 
-            node = node->GetNext();
-        }
-    }
+    handler->SetNextHandler(handlerOld);
+
+    if ( handlerOld )
+        GetEventHandler()->SetPreviousHandler(handler);
+
+    SetEventHandler(handler);
 }
 
-bool wxWindowBase::Validate()
+wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 {
-#if wxUSE_VALIDATORS
-    wxWindowList::Node *node;
-    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+    wxEvtHandler *handlerA = GetEventHandler();
+    if ( handlerA )
     {
-        wxWindowBase *child = node->GetData();
-        wxValidator *validator = child->GetValidator();
-        if ( validator && !validator->Validate((wxWindow *)this) )
+        wxEvtHandler *handlerB = handlerA->GetNextHandler();
+        handlerA->SetNextHandler((wxEvtHandler *)NULL);
+
+        if ( handlerB )
+            handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
+        SetEventHandler(handlerB);
+
+        if ( deleteHandler )
         {
-            return FALSE;
+            delete handlerA;
+            handlerA = (wxEvtHandler *)NULL;
         }
     }
-#endif // wxUSE_VALIDATORS
 
-    return TRUE;
+    return handlerA;
 }
 
-bool wxWindowBase::TransferDataToWindow()
+bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 {
-#if wxUSE_VALIDATORS
-    wxWindowList::Node *node;
-    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+    wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
+
+    wxEvtHandler *handlerPrev = NULL,
+                 *handlerCur = GetEventHandler();
+    while ( handlerCur )
     {
-        wxWindowBase *child = node->GetData();
-        wxValidator *validator = child->GetValidator();
-        if ( validator && !validator->TransferToWindow() )
+        wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
+
+        if ( handlerCur == handler )
         {
-            wxLog *log = wxLog::GetActiveTarget();
-            if ( log )
+            if ( handlerPrev )
+            {
+                handlerPrev->SetNextHandler(handlerNext);
+            }
+            else
             {
-                wxLogWarning(_("Could not transfer data to window"));
-                log->Flush();
+                SetEventHandler(handlerNext);
             }
 
-            return FALSE;
-        }
-    }
-#endif // wxUSE_VALIDATORS
+            if ( handlerNext )
+            {
+                handlerNext->SetPreviousHandler ( handlerPrev );
+            }
 
-    return TRUE;
-}
+            handler->SetNextHandler(NULL);
+            handler->SetPreviousHandler(NULL);
 
-bool wxWindowBase::TransferDataFromWindow()
-{
-#if wxUSE_VALIDATORS
-    wxWindowList::Node *node;
-    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
-    {
-        wxWindow *child = node->GetData();
-        if ( child->GetValidator() &&
-             !child->GetValidator()->TransferFromWindow() )
-        {
-            return FALSE;
+            return true;
         }
+
+        handlerPrev = handlerCur;
+        handlerCur = handlerNext;
     }
-#endif // wxUSE_VALIDATORS
 
-    return TRUE;
+    wxFAIL_MSG( _T("where has the event handler gone?") );
+
+    return false;
 }
 
-void wxWindowBase::InitDialog()
+bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
 {
-    wxInitDialogEvent event(GetId());
-    event.SetEventObject( this );
-    GetEventHandler()->ProcessEvent(event);
+    return GetEventHandler()->SafelyProcessEvent(event);
 }
 
 // ----------------------------------------------------------------------------
-// tooltips
+// colours, fonts &c
 // ----------------------------------------------------------------------------
 
-#if wxUSE_TOOLTIPS
+void wxWindowBase::InheritAttributes()
+{
+    const wxWindowBase * const parent = GetParent();
+    if ( !parent )
+        return;
+
+    // we only inherit attributes which had been explicitly set for the parent
+    // which ensures that this only happens if the user really wants it and
+    // not by default which wouldn't make any sense in modern GUIs where the
+    // controls don't all use the same fonts (nor colours)
+    if ( parent->m_inheritFont && !m_hasFont )
+        SetFont(parent->GetFont());
+
+    // in addition, there is a possibility to explicitly forbid inheriting
+    // colours at each class level by overriding ShouldInheritColours()
+    if ( ShouldInheritColours() )
+    {
+        if ( parent->m_inheritFgCol && !m_hasFgCol )
+            SetForegroundColour(parent->GetForegroundColour());
+
+        // inheriting (solid) background colour is wrong as it totally breaks
+        // any kind of themed backgrounds
+        //
+        // instead, the controls should use the same background as their parent
+        // (ideally by not drawing it at all)
+#if 0
+        if ( parent->m_inheritBgCol && !m_hasBgCol )
+            SetBackgroundColour(parent->GetBackgroundColour());
+#endif // 0
+    }
+}
 
-void wxWindowBase::SetToolTip( const wxString &tip )
+/* static */ wxVisualAttributes
+wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 {
-    // don't create the new tooltip if we already have one
-    if ( m_tooltip )
+    // it is important to return valid values for all attributes from here,
+    // GetXXX() below rely on this
+    wxVisualAttributes attrs;
+    attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
+    attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
+
+    // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
+    // the usual background colour than wxSYS_COLOUR_BTNFACE.
+    // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
+    // colour on other platforms.
+
+#if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
+    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
+#else
+    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
+#endif
+    return attrs;
+}
+
+wxColour wxWindowBase::GetBackgroundColour() const
+{
+    if ( !m_backgroundColour.IsOk() )
     {
-        m_tooltip->SetTip( tip );
+        wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
+
+        // get our default background colour
+        wxColour colBg = GetDefaultAttributes().colBg;
+
+        // we must return some valid colour to avoid redoing this every time
+        // and also to avoid surprizing the applications written for older
+        // wxWidgets versions where GetBackgroundColour() always returned
+        // something -- so give them something even if it doesn't make sense
+        // for this window (e.g. it has a themed background)
+        if ( !colBg.Ok() )
+            colBg = GetClassDefaultAttributes().colBg;
+
+        return colBg;
     }
     else
+        return m_backgroundColour;
+}
+
+wxColour wxWindowBase::GetForegroundColour() const
+{
+    // logic is the same as above
+    if ( !m_hasFgCol && !m_foregroundColour.Ok() )
     {
-        SetToolTip( new wxToolTip( tip ) );
+        wxColour colFg = GetDefaultAttributes().colFg;
+
+        if ( !colFg.IsOk() )
+            colFg = GetClassDefaultAttributes().colFg;
+
+        return colFg;
     }
+    else
+        return m_foregroundColour;
+}
 
-    // setting empty tooltip text does not remove the tooltip any more - use
-    // SetToolTip((wxToolTip *)NULL) for this
+bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
+{
+    if ( colour == m_backgroundColour )
+        return false;
+
+    m_hasBgCol = colour.IsOk();
+    if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
+        m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
+
+    m_inheritBgCol = m_hasBgCol;
+    m_backgroundColour = colour;
+    SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
+    return true;
 }
 
-void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
+bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 {
-    if ( m_tooltip )
-        delete m_tooltip;
+    if (colour == m_foregroundColour )
+        return false;
 
-    m_tooltip = tooltip;
+    m_hasFgCol = colour.IsOk();
+    m_inheritFgCol = m_hasFgCol;
+    m_foregroundColour = colour;
+    SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
+    return true;
 }
 
-#endif // wxUSE_TOOLTIPS
+bool wxWindowBase::SetCursor(const wxCursor& cursor)
+{
+    // setting an invalid cursor is ok, it means that we don't have any special
+    // cursor
+    if ( m_cursor.IsSameAs(cursor) )
+    {
+        // no change
+        return false;
+    }
 
-// ----------------------------------------------------------------------------
-// constraints and sizers
-// ----------------------------------------------------------------------------
+    m_cursor = cursor;
 
-#if wxUSE_CONSTRAINTS
+    return true;
+}
 
-void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
+wxFont wxWindowBase::GetFont() const
 {
-    if ( m_constraints )
+    // logic is the same as in GetBackgroundColour()
+    if ( !m_font.IsOk() )
     {
-        UnsetConstraints(m_constraints);
-        delete m_constraints;
+        wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
+
+        wxFont font = GetDefaultAttributes().font;
+        if ( !font.IsOk() )
+            font = GetClassDefaultAttributes().font;
+
+        return font;
     }
-    m_constraints = constraints;
-    if ( m_constraints )
+    else
+        return m_font;
+}
+
+bool wxWindowBase::SetFont(const wxFont& font)
+{
+    if ( font == m_font )
     {
-        // Make sure other windows know they're part of a 'meaningful relationship'
-        if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
-            m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
-            m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
-            m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
-            m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
-            m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
-            m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
-            m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
-        if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
-            m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
+        // no change
+        return false;
     }
+
+    m_font = font;
+    m_hasFont = font.IsOk();
+    m_inheritFont = m_hasFont;
+
+    InvalidateBestSize();
+
+    return true;
 }
 
-// This removes any dangling pointers to this window in other windows'
-// constraintsInvolvedIn lists.
-void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
+#if wxUSE_PALETTE
+
+void wxWindowBase::SetPalette(const wxPalette& pal)
 {
-    if ( c )
+    m_hasCustomPalette = true;
+    m_palette = pal;
+
+    // VZ: can anyone explain me what do we do here?
+    wxWindowDC d((wxWindow *) this);
+    d.SetPalette(pal);
+}
+
+wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
+{
+    wxWindow *win = (wxWindow *)this;
+    while ( win && !win->HasCustomPalette() )
     {
-        if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
-            c->left.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
-            c->top.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
-            c->right.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
-            c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
-            c->width.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
-            c->height.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
-            c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
-        if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
-            c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
+        win = win->GetParent();
     }
+
+    return win;
 }
 
-// Back-pointer to other windows we're involved with, so if we delete this
-// window, we must delete any constraints we're involved with.
-void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
+#endif // wxUSE_PALETTE
+
+#if wxUSE_CARET
+void wxWindowBase::SetCaret(wxCaret *caret)
 {
-    if ( !m_constraintsInvolvedIn )
-        m_constraintsInvolvedIn = new wxWindowList;
-    if ( !m_constraintsInvolvedIn->Find(otherWin) )
-        m_constraintsInvolvedIn->Append(otherWin);
+    if ( m_caret )
+    {
+        delete m_caret;
+    }
+
+    m_caret = caret;
+
+    if ( m_caret )
+    {
+        wxASSERT_MSG( m_caret->GetWindow() == this,
+                      wxT("caret should be created associated to this window") );
+    }
 }
+#endif // wxUSE_CARET
 
-// REMOVE back-pointer to other windows we're involved with.
-void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
+#if wxUSE_VALIDATORS
+// ----------------------------------------------------------------------------
+// validators
+// ----------------------------------------------------------------------------
+
+void wxWindowBase::SetValidator(const wxValidator& validator)
 {
-    if ( m_constraintsInvolvedIn )
-        m_constraintsInvolvedIn->DeleteObject(otherWin);
+    if ( m_windowValidator )
+        delete m_windowValidator;
+
+    m_windowValidator = (wxValidator *)validator.Clone();
+
+    if ( m_windowValidator )
+        m_windowValidator->SetWindow(this);
 }
+#endif // wxUSE_VALIDATORS
 
-// Reset any constraints that mention this window
-void wxWindowBase::DeleteRelatedConstraints()
+// ----------------------------------------------------------------------------
+// update region stuff
+// ----------------------------------------------------------------------------
+
+wxRect wxWindowBase::GetUpdateClientRect() const
 {
-    if ( m_constraintsInvolvedIn )
+    wxRegion rgnUpdate = GetUpdateRegion();
+    rgnUpdate.Intersect(GetClientRect());
+    wxRect rectUpdate = rgnUpdate.GetBox();
+    wxPoint ptOrigin = GetClientAreaOrigin();
+    rectUpdate.x -= ptOrigin.x;
+    rectUpdate.y -= ptOrigin.y;
+
+    return rectUpdate;
+}
+
+bool wxWindowBase::DoIsExposed(int x, int y) const
+{
+    return m_updateRegion.Contains(x, y) != wxOutRegion;
+}
+
+bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
+{
+    return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
+}
+
+void wxWindowBase::ClearBackground()
+{
+    // wxGTK uses its own version, no need to add never used code
+#ifndef __WXGTK__
+    wxClientDC dc((wxWindow *)this);
+    wxBrush brush(GetBackgroundColour(), wxSOLID);
+    dc.SetBackground(brush);
+    dc.Clear();
+#endif // __WXGTK__
+}
+
+// ----------------------------------------------------------------------------
+// find child window by id or name
+// ----------------------------------------------------------------------------
+
+wxWindow *wxWindowBase::FindWindow(long id) const
+{
+    if ( id == m_windowId )
+        return (wxWindow *)this;
+
+    wxWindowBase *res = (wxWindow *)NULL;
+    wxWindowList::compatibility_iterator node;
+    for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
+    {
+        wxWindowBase *child = node->GetData();
+        res = child->FindWindow( id );
+    }
+
+    return (wxWindow *)res;
+}
+
+wxWindow *wxWindowBase::FindWindow(const wxString& name) const
+{
+    if ( name == m_windowName )
+        return (wxWindow *)this;
+
+    wxWindowBase *res = (wxWindow *)NULL;
+    wxWindowList::compatibility_iterator node;
+    for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
+    {
+        wxWindow *child = node->GetData();
+        res = child->FindWindow(name);
+    }
+
+    return (wxWindow *)res;
+}
+
+
+// find any window by id or name or label: If parent is non-NULL, look through
+// children for a label or title matching the specified string. If NULL, look
+// through all top-level windows.
+//
+// to avoid duplicating code we reuse the same helper function but with
+// different comparators
+
+typedef bool (*wxFindWindowCmp)(const wxWindow *win,
+                                const wxString& label, long id);
+
+static
+bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
+                           long WXUNUSED(id))
+{
+    return win->GetLabel() == label;
+}
+
+static
+bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
+                          long WXUNUSED(id))
+{
+    return win->GetName() == label;
+}
+
+static
+bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
+                        long id)
+{
+    return win->GetId() == id;
+}
+
+// recursive helper for the FindWindowByXXX() functions
+static
+wxWindow *wxFindWindowRecursively(const wxWindow *parent,
+                                  const wxString& label,
+                                  long id,
+                                  wxFindWindowCmp cmp)
+{
+    if ( parent )
+    {
+        // see if this is the one we're looking for
+        if ( (*cmp)(parent, label, id) )
+            return (wxWindow *)parent;
+
+        // It wasn't, so check all its children
+        for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
+        {
+            // recursively check each child
+            wxWindow *win = (wxWindow *)node->GetData();
+            wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
+            if (retwin)
+                return retwin;
+        }
+    }
+
+    // Not found
+    return NULL;
+}
+
+// helper for FindWindowByXXX()
+static
+wxWindow *wxFindWindowHelper(const wxWindow *parent,
+                             const wxString& label,
+                             long id,
+                             wxFindWindowCmp cmp)
+{
+    if ( parent )
+    {
+        // just check parent and all its children
+        return wxFindWindowRecursively(parent, label, id, cmp);
+    }
+
+    // start at very top of wx's windows
+    for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
+          node;
+          node = node->GetNext() )
+    {
+        // recursively check each window & its children
+        wxWindow *win = node->GetData();
+        wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
+        if (retwin)
+            return retwin;
+    }
+
+    return NULL;
+}
+
+/* static */
+wxWindow *
+wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
+{
+    return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
+}
+
+/* static */
+wxWindow *
+wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
+{
+    wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
+
+    if ( !win )
+    {
+        // fall back to the label
+        win = FindWindowByLabel(title, parent);
+    }
+
+    return win;
+}
+
+/* static */
+wxWindow *
+wxWindowBase::FindWindowById( long id, const wxWindow* parent )
+{
+    return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
+}
+
+// ----------------------------------------------------------------------------
+// dialog oriented functions
+// ----------------------------------------------------------------------------
+
+void wxWindowBase::MakeModal(bool modal)
+{
+    // Disable all other windows
+    if ( IsTopLevel() )
     {
-        wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
+        wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
         while (node)
         {
             wxWindow *win = node->GetData();
-            wxLayoutConstraints *constr = win->GetConstraints();
+            if (win != this)
+                win->Enable(!modal);
 
-            // Reset any constraints involving this window
-            if ( constr )
+            node = node->GetNext();
+        }
+    }
+}
+
+bool wxWindowBase::Validate()
+{
+#if wxUSE_VALIDATORS
+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+
+    wxWindowList::compatibility_iterator node;
+    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+    {
+        wxWindowBase *child = node->GetData();
+        wxValidator *validator = child->GetValidator();
+        if ( validator && !validator->Validate((wxWindow *)this) )
+        {
+            return false;
+        }
+
+        if ( recurse && !child->Validate() )
+        {
+            return false;
+        }
+    }
+#endif // wxUSE_VALIDATORS
+
+    return true;
+}
+
+bool wxWindowBase::TransferDataToWindow()
+{
+#if wxUSE_VALIDATORS
+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+
+    wxWindowList::compatibility_iterator node;
+    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+    {
+        wxWindowBase *child = node->GetData();
+        wxValidator *validator = child->GetValidator();
+        if ( validator && !validator->TransferToWindow() )
+        {
+            wxLogWarning(_("Could not transfer data to window"));
+#if wxUSE_LOG
+            wxLog::FlushActive();
+#endif // wxUSE_LOG
+
+            return false;
+        }
+
+        if ( recurse )
+        {
+            if ( !child->TransferDataToWindow() )
             {
-                constr->left.ResetIfWin(this);
-                constr->top.ResetIfWin(this);
-                constr->right.ResetIfWin(this);
-                constr->bottom.ResetIfWin(this);
-                constr->width.ResetIfWin(this);
-                constr->height.ResetIfWin(this);
-                constr->centreX.ResetIfWin(this);
-                constr->centreY.ResetIfWin(this);
+                // warning already given
+                return false;
+            }
+        }
+    }
+#endif // wxUSE_VALIDATORS
+
+    return true;
+}
+
+bool wxWindowBase::TransferDataFromWindow()
+{
+#if wxUSE_VALIDATORS
+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+
+    wxWindowList::compatibility_iterator node;
+    for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+    {
+        wxWindow *child = node->GetData();
+        wxValidator *validator = child->GetValidator();
+        if ( validator && !validator->TransferFromWindow() )
+        {
+            // nop warning here because the application is supposed to give
+            // one itself - we don't know here what might have gone wrongly
+
+            return false;
+        }
+
+        if ( recurse )
+        {
+            if ( !child->TransferDataFromWindow() )
+            {
+                // warning already given
+                return false;
             }
+        }
+    }
+#endif // wxUSE_VALIDATORS
+
+    return true;
+}
+
+void wxWindowBase::InitDialog()
+{
+    wxInitDialogEvent event(GetId());
+    event.SetEventObject( this );
+    GetEventHandler()->ProcessEvent(event);
+}
+
+// ----------------------------------------------------------------------------
+// context-sensitive help support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_HELP
+
+// associate this help text with this window
+void wxWindowBase::SetHelpText(const wxString& text)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        helpProvider->AddHelp(this, text);
+    }
+}
+
+#if WXWIN_COMPATIBILITY_2_8
+// associate this help text with all windows with the same id as this
+// one
+void wxWindowBase::SetHelpTextForId(const wxString& text)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        helpProvider->AddHelp(GetId(), text);
+    }
+}
+#endif // WXWIN_COMPATIBILITY_2_8
+
+// get the help string associated with this window (may be empty)
+// default implementation forwards calls to the help provider
+wxString
+wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
+                                 wxHelpEvent::Origin WXUNUSED(origin)) const
+{
+    wxString text;
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        text = helpProvider->GetHelp(this);
+    }
+
+    return text;
+}
+
+// show help for this window
+void wxWindowBase::OnHelp(wxHelpEvent& event)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        wxPoint pos = event.GetPosition();
+        const wxHelpEvent::Origin origin = event.GetOrigin();
+        if ( origin == wxHelpEvent::Origin_Keyboard )
+        {
+            // if the help event was generated from keyboard it shouldn't
+            // appear at the mouse position (which is still the only position
+            // associated with help event) if the mouse is far away, although
+            // we still do use the mouse position if it's over the window
+            // because we suppose the user looks approximately at the mouse
+            // already and so it would be more convenient than showing tooltip
+            // at some arbitrary position which can be quite far from it
+            const wxRect rectClient = GetClientRect();
+            if ( !rectClient.Contains(ScreenToClient(pos)) )
+            {
+                // position help slightly under and to the right of this window
+                pos = ClientToScreen(wxPoint(
+                        2*GetCharWidth(),
+                        rectClient.height + GetCharHeight()
+                      ));
+            }
+        }
+
+        if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
+        {
+            // skip the event.Skip() below
+            return;
+        }
+    }
+
+    event.Skip();
+}
+
+#endif // wxUSE_HELP
+
+// ----------------------------------------------------------------------------
+// tooltips
+// ----------------------------------------------------------------------------
+
+#if wxUSE_TOOLTIPS
+
+void wxWindowBase::SetToolTip( const wxString &tip )
+{
+    // don't create the new tooltip if we already have one
+    if ( m_tooltip )
+    {
+        m_tooltip->SetTip( tip );
+    }
+    else
+    {
+        SetToolTip( new wxToolTip( tip ) );
+    }
+
+    // setting empty tooltip text does not remove the tooltip any more - use
+    // SetToolTip((wxToolTip *)NULL) for this
+}
+
+void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
+{
+    if ( m_tooltip != tooltip )
+    {
+        if ( m_tooltip )
+            delete m_tooltip;
+
+        m_tooltip = tooltip;
+    }
+}
+
+#endif // wxUSE_TOOLTIPS
+
+// ----------------------------------------------------------------------------
+// constraints and sizers
+// ----------------------------------------------------------------------------
+
+#if wxUSE_CONSTRAINTS
+
+void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
+{
+    if ( m_constraints )
+    {
+        UnsetConstraints(m_constraints);
+        delete m_constraints;
+    }
+    m_constraints = constraints;
+    if ( m_constraints )
+    {
+        // Make sure other windows know they're part of a 'meaningful relationship'
+        if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
+            m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
+            m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
+            m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
+            m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
+            m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
+            m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
+            m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
+        if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
+            m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
+    }
+}
+
+// This removes any dangling pointers to this window in other windows'
+// constraintsInvolvedIn lists.
+void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
+{
+    if ( c )
+    {
+        if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
+            c->left.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
+            c->top.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
+            c->right.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
+            c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
+            c->width.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
+            c->height.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
+            c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
+        if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
+            c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
+    }
+}
+
+// Back-pointer to other windows we're involved with, so if we delete this
+// window, we must delete any constraints we're involved with.
+void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
+{
+    if ( !m_constraintsInvolvedIn )
+        m_constraintsInvolvedIn = new wxWindowList;
+    if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
+        m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
+}
+
+// REMOVE back-pointer to other windows we're involved with.
+void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
+{
+    if ( m_constraintsInvolvedIn )
+        m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
+}
+
+// Reset any constraints that mention this window
+void wxWindowBase::DeleteRelatedConstraints()
+{
+    if ( m_constraintsInvolvedIn )
+    {
+        wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
+        while (node)
+        {
+            wxWindow *win = node->GetData();
+            wxLayoutConstraints *constr = win->GetConstraints();
+
+            // Reset any constraints involving this window
+            if ( constr )
+            {
+                constr->left.ResetIfWin(this);
+                constr->top.ResetIfWin(this);
+                constr->right.ResetIfWin(this);
+                constr->bottom.ResetIfWin(this);
+                constr->width.ResetIfWin(this);
+                constr->height.ResetIfWin(this);
+                constr->centreX.ResetIfWin(this);
+                constr->centreY.ResetIfWin(this);
+            }
+
+            wxWindowList::compatibility_iterator next = node->GetNext();
+            m_constraintsInvolvedIn->Erase(node);
+            node = next;
+        }
+
+        delete m_constraintsInvolvedIn;
+        m_constraintsInvolvedIn = (wxWindowList *) NULL;
+    }
+}
+
+#endif // wxUSE_CONSTRAINTS
+
+void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
+{
+    if ( sizer == m_windowSizer)
+        return;
+
+    if ( m_windowSizer )
+    {
+        m_windowSizer->SetContainingWindow(NULL);
+
+        if ( deleteOld )
+            delete m_windowSizer;
+    }
+
+    m_windowSizer = sizer;
+    if ( m_windowSizer )
+    {
+        m_windowSizer->SetContainingWindow((wxWindow *)this);
+    }
+
+    SetAutoLayout(m_windowSizer != NULL);
+}
+
+void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
+{
+    SetSizer( sizer, deleteOld );
+    sizer->SetSizeHints( (wxWindow*) this );
+}
+
+
+void wxWindowBase::SetContainingSizer(wxSizer* sizer)
+{
+    // adding a window to a sizer twice is going to result in fatal and
+    // hard to debug problems later because when deleting the second
+    // associated wxSizerItem we're going to dereference a dangling
+    // pointer; so try to detect this as early as possible
+    wxASSERT_MSG( !sizer || m_containingSizer != sizer,
+                  _T("Adding a window to the same sizer twice?") );
+
+    m_containingSizer = sizer;
+}
+
+#if wxUSE_CONSTRAINTS
+
+void wxWindowBase::SatisfyConstraints()
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    bool wasOk = constr && constr->AreSatisfied();
+
+    ResetConstraints();   // Mark all constraints as unevaluated
+
+    int noChanges = 1;
+
+    // if we're a top level panel (i.e. our parent is frame/dialog), our
+    // own constraints will never be satisfied any more unless we do it
+    // here
+    if ( wasOk )
+    {
+        while ( noChanges > 0 )
+        {
+            LayoutPhase1(&noChanges);
+        }
+    }
+
+    LayoutPhase2(&noChanges);
+}
+
+#endif // wxUSE_CONSTRAINTS
+
+bool wxWindowBase::Layout()
+{
+    // If there is a sizer, use it instead of the constraints
+    if ( GetSizer() )
+    {
+        int w = 0, h = 0;
+        GetVirtualSize(&w, &h);
+        GetSizer()->SetDimension( 0, 0, w, h );
+    }
+#if wxUSE_CONSTRAINTS
+    else
+    {
+        SatisfyConstraints(); // Find the right constraints values
+        SetConstraintSizes(); // Recursively set the real window sizes
+    }
+#endif
+
+    return true;
+}
+
+#if wxUSE_CONSTRAINTS
+
+// first phase of the constraints evaluation: set our own constraints
+bool wxWindowBase::LayoutPhase1(int *noChanges)
+{
+    wxLayoutConstraints *constr = GetConstraints();
+
+    return !constr || constr->SatisfyConstraints(this, noChanges);
+}
+
+// second phase: set the constraints for our children
+bool wxWindowBase::LayoutPhase2(int *noChanges)
+{
+    *noChanges = 0;
+
+    // Layout children
+    DoPhase(1);
+
+    // Layout grand children
+    DoPhase(2);
+
+    return true;
+}
+
+// Do a phase of evaluating child constraints
+bool wxWindowBase::DoPhase(int phase)
+{
+    // the list containing the children for which the constraints are already
+    // set correctly
+    wxWindowList succeeded;
+
+    // the max number of iterations we loop before concluding that we can't set
+    // the constraints
+    static const int maxIterations = 500;
+
+    for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
+    {
+        int noChanges = 0;
+
+        // loop over all children setting their constraints
+        for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
+        {
+            wxWindow *child = node->GetData();
+            if ( child->IsTopLevel() )
+            {
+                // top level children are not inside our client area
+                continue;
+            }
+
+            if ( !child->GetConstraints() || succeeded.Find(child) )
+            {
+                // this one is either already ok or nothing we can do about it
+                continue;
+            }
+
+            int tempNoChanges = 0;
+            bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
+                                      : child->LayoutPhase2(&tempNoChanges);
+            noChanges += tempNoChanges;
+
+            if ( success )
+            {
+                succeeded.Append(child);
+            }
+        }
+
+        if ( !noChanges )
+        {
+            // constraints are set
+            break;
+        }
+    }
+
+    return true;
+}
+
+void wxWindowBase::ResetConstraints()
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        constr->left.SetDone(false);
+        constr->top.SetDone(false);
+        constr->right.SetDone(false);
+        constr->bottom.SetDone(false);
+        constr->width.SetDone(false);
+        constr->height.SetDone(false);
+        constr->centreX.SetDone(false);
+        constr->centreY.SetDone(false);
+    }
+
+    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+    while (node)
+    {
+        wxWindow *win = node->GetData();
+        if ( !win->IsTopLevel() )
+            win->ResetConstraints();
+        node = node->GetNext();
+    }
+}
+
+// Need to distinguish between setting the 'fake' size for windows and sizers,
+// and setting the real values.
+void wxWindowBase::SetConstraintSizes(bool recurse)
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr && constr->AreSatisfied() )
+    {
+        int x = constr->left.GetValue();
+        int y = constr->top.GetValue();
+        int w = constr->width.GetValue();
+        int h = constr->height.GetValue();
+
+        if ( (constr->width.GetRelationship() != wxAsIs ) ||
+             (constr->height.GetRelationship() != wxAsIs) )
+        {
+            SetSize(x, y, w, h);
+        }
+        else
+        {
+            // If we don't want to resize this window, just move it...
+            Move(x, y);
+        }
+    }
+    else if ( constr )
+    {
+        wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
+                   GetClassInfo()->GetClassName(),
+                   GetName().c_str());
+    }
+
+    if ( recurse )
+    {
+        wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+        while (node)
+        {
+            wxWindow *win = node->GetData();
+            if ( !win->IsTopLevel() && win->GetConstraints() )
+                win->SetConstraintSizes();
+            node = node->GetNext();
+        }
+    }
+}
+
+// Only set the size/position of the constraint (if any)
+void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        if ( x != wxDefaultCoord )
+        {
+            constr->left.SetValue(x);
+            constr->left.SetDone(true);
+        }
+        if ( y != wxDefaultCoord )
+        {
+            constr->top.SetValue(y);
+            constr->top.SetDone(true);
+        }
+        if ( w != wxDefaultCoord )
+        {
+            constr->width.SetValue(w);
+            constr->width.SetDone(true);
+        }
+        if ( h != wxDefaultCoord )
+        {
+            constr->height.SetValue(h);
+            constr->height.SetDone(true);
+        }
+    }
+}
+
+void wxWindowBase::MoveConstraint(int x, int y)
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        if ( x != wxDefaultCoord )
+        {
+            constr->left.SetValue(x);
+            constr->left.SetDone(true);
+        }
+        if ( y != wxDefaultCoord )
+        {
+            constr->top.SetValue(y);
+            constr->top.SetDone(true);
+        }
+    }
+}
+
+void wxWindowBase::GetSizeConstraint(int *w, int *h) const
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        *w = constr->width.GetValue();
+        *h = constr->height.GetValue();
+    }
+    else
+        GetSize(w, h);
+}
+
+void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        *w = constr->width.GetValue();
+        *h = constr->height.GetValue();
+    }
+    else
+        GetClientSize(w, h);
+}
+
+void wxWindowBase::GetPositionConstraint(int *x, int *y) const
+{
+    wxLayoutConstraints *constr = GetConstraints();
+    if ( constr )
+    {
+        *x = constr->left.GetValue();
+        *y = constr->top.GetValue();
+    }
+    else
+        GetPosition(x, y);
+}
+
+#endif // wxUSE_CONSTRAINTS
+
+void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
+{
+    // don't do it for the dialogs/frames - they float independently of their
+    // parent
+    if ( !IsTopLevel() )
+    {
+        wxWindow *parent = GetParent();
+        if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
+        {
+            wxPoint pt(parent->GetClientAreaOrigin());
+            x += pt.x;
+            y += pt.y;
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// Update UI processing
+// ----------------------------------------------------------------------------
+
+void wxWindowBase::UpdateWindowUI(long flags)
+{
+    wxUpdateUIEvent event(GetId());
+    event.SetEventObject(this);
+
+    if ( GetEventHandler()->ProcessEvent(event) )
+    {
+        DoUpdateWindowUI(event);
+    }
+
+    if (flags & wxUPDATE_UI_RECURSE)
+    {
+        wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+        while (node)
+        {
+            wxWindow* child = (wxWindow*) node->GetData();
+            child->UpdateWindowUI(flags);
+            node = node->GetNext();
+        }
+    }
+}
+
+// do the window-specific processing after processing the update event
+void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
+{
+    if ( event.GetSetEnabled() )
+        Enable(event.GetEnabled());
+
+    if ( event.GetSetShown() )
+        Show(event.GetShown());
+}
+
+// ----------------------------------------------------------------------------
+// dialog units translations
+// ----------------------------------------------------------------------------
+
+wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
+{
+    int charWidth = GetCharWidth();
+    int charHeight = GetCharHeight();
+    wxPoint pt2 = wxDefaultPosition;
+    if (pt.x != wxDefaultCoord)
+        pt2.x = (int) ((pt.x * 4) / charWidth);
+    if (pt.y != wxDefaultCoord)
+        pt2.y = (int) ((pt.y * 8) / charHeight);
+
+    return pt2;
+}
+
+wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
+{
+    int charWidth = GetCharWidth();
+    int charHeight = GetCharHeight();
+    wxPoint pt2 = wxDefaultPosition;
+    if (pt.x != wxDefaultCoord)
+        pt2.x = (int) ((pt.x * charWidth) / 4);
+    if (pt.y != wxDefaultCoord)
+        pt2.y = (int) ((pt.y * charHeight) / 8);
+
+    return pt2;
+}
+
+// ----------------------------------------------------------------------------
+// event handlers
+// ----------------------------------------------------------------------------
+
+// propagate the colour change event to the subwindows
+void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
+{
+    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+    while ( node )
+    {
+        // Only propagate to non-top-level windows
+        wxWindow *win = node->GetData();
+        if ( !win->IsTopLevel() )
+        {
+            wxSysColourChangedEvent event2;
+            event.SetEventObject(win);
+            win->GetEventHandler()->ProcessEvent(event2);
+        }
+
+        node = node->GetNext();
+    }
+
+    Refresh();
+}
+
+// the default action is to populate dialog with data when it's created,
+// and nudge the UI into displaying itself correctly in case
+// we've turned the wxUpdateUIEvents frequency down low.
+void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
+{
+    TransferDataToWindow();
+
+    // Update the UI at this point
+    UpdateWindowUI(wxUPDATE_UI_RECURSE);
+}
+
+// ----------------------------------------------------------------------------
+// menu-related functions
+// ----------------------------------------------------------------------------
+
+#if wxUSE_MENUS
+
+bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
+{
+    wxCHECK_MSG( menu, false, "can't popup NULL menu" );
+
+    wxCurrentPopupMenu = menu;
+    const bool rc = DoPopupMenu(menu, x, y);
+    wxCurrentPopupMenu = NULL;
+
+    return rc;
+}
+
+// this is used to pass the id of the selected item from the menu event handler
+// to the main function itself
+//
+// it's ok to use a global here as there can be at most one popup menu shown at
+// any time
+static int gs_popupMenuSelection = wxID_NONE;
+
+void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
+{
+    // store the id in a global variable where we'll retrieve it from later
+    gs_popupMenuSelection = event.GetId();
+}
+
+int
+wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
+{
+    gs_popupMenuSelection = wxID_NONE;
+
+    Connect(wxEVT_COMMAND_MENU_SELECTED,
+            wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
+            NULL,
+            this);
+
+    PopupMenu(&menu, x, y);
+
+    Disconnect(wxEVT_COMMAND_MENU_SELECTED,
+               wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
+               NULL,
+               this);
+
+    return gs_popupMenuSelection;
+}
+
+#endif // wxUSE_MENUS
+
+// methods for drawing the sizers in a visible way
+#ifdef __WXDEBUG__
+
+static void DrawSizers(wxWindowBase *win);
+
+static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
+{
+    wxClientDC dc((wxWindow *)win);
+    dc.SetPen(*wxRED_PEN);
+    dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
+    dc.DrawRectangle(rect.Deflate(1, 1));
+}
+
+static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
+{
+    const wxSizerItemList& items = sizer->GetChildren();
+    for ( wxSizerItemList::const_iterator i = items.begin(),
+                                        end = items.end();
+          i != end;
+          ++i )
+    {
+        wxSizerItem *item = *i;
+        if ( item->IsSizer() )
+        {
+            DrawBorder(win, item->GetRect().Deflate(2));
+            DrawSizer(win, item->GetSizer());
+        }
+        else if ( item->IsSpacer() )
+        {
+            DrawBorder(win, item->GetRect().Deflate(2), true);
+        }
+        else if ( item->IsWindow() )
+        {
+            DrawSizers(item->GetWindow());
+        }
+    }
+}
+
+static void DrawSizers(wxWindowBase *win)
+{
+    wxSizer *sizer = win->GetSizer();
+    if ( sizer )
+    {
+        DrawBorder(win, win->GetClientSize());
+        DrawSizer(win, sizer);
+    }
+    else // no sizer, still recurse into the children
+    {
+        const wxWindowList& children = win->GetChildren();
+        for ( wxWindowList::const_iterator i = children.begin(),
+                                         end = children.end();
+              i != end;
+              ++i )
+        {
+            DrawSizers(*i);
+        }
+    }
+}
+
+#endif // __WXDEBUG__
+
+// process special middle clicks
+void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
+{
+    if ( event.ControlDown() && event.AltDown() )
+    {
+#ifdef __WXDEBUG__
+        // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
+        if ( event.ShiftDown() )
+        {
+            DrawSizers(this);
+            return;
+        }
+#endif // __WXDEBUG__
+        ::wxInfoMessageBox((wxWindow*)this);
+    }
+    else
+    {
+        event.Skip();
+    }
+}
+
+// ----------------------------------------------------------------------------
+// accessibility
+// ----------------------------------------------------------------------------
+
+#if wxUSE_ACCESSIBILITY
+void wxWindowBase::SetAccessible(wxAccessible* accessible)
+{
+    if (m_accessible && (accessible != m_accessible))
+        delete m_accessible;
+    m_accessible = accessible;
+    if (m_accessible)
+        m_accessible->SetWindow((wxWindow*) this);
+}
+
+// Returns the accessible object, creating if necessary.
+wxAccessible* wxWindowBase::GetOrCreateAccessible()
+{
+    if (!m_accessible)
+        m_accessible = CreateAccessible();
+    return m_accessible;
+}
+
+// Override to create a specific accessible object.
+wxAccessible* wxWindowBase::CreateAccessible()
+{
+    return new wxWindowAccessible((wxWindow*) this);
+}
+
+#endif
+
+// ----------------------------------------------------------------------------
+// list classes implementation
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STL
+
+#include "wx/listimpl.cpp"
+WX_DEFINE_LIST(wxWindowList)
+
+#else // !wxUSE_STL
+
+void wxWindowListNode::DeleteData()
+{
+    delete (wxWindow *)GetData();
+}
+
+#endif // wxUSE_STL/!wxUSE_STL
+
+// ----------------------------------------------------------------------------
+// borders
+// ----------------------------------------------------------------------------
+
+wxBorder wxWindowBase::GetBorder(long flags) const
+{
+    wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
+    if ( border == wxBORDER_DEFAULT )
+    {
+        border = GetDefaultBorder();
+    }
+    else if ( border == wxBORDER_THEME )
+    {
+        border = GetDefaultBorderForControl();
+    }
+
+    return border;
+}
+
+wxBorder wxWindowBase::GetDefaultBorder() const
+{
+    return wxBORDER_NONE;
+}
+
+// ----------------------------------------------------------------------------
+// hit testing
+// ----------------------------------------------------------------------------
+
+wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
+{
+    // here we just check if the point is inside the window or not
+
+    // check the top and left border first
+    bool outside = x < 0 || y < 0;
+    if ( !outside )
+    {
+        // check the right and bottom borders too
+        wxSize size = GetSize();
+        outside = x >= size.x || y >= size.y;
+    }
+
+    return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
+}
+
+// ----------------------------------------------------------------------------
+// mouse capture
+// ----------------------------------------------------------------------------
+
+struct WXDLLEXPORT wxWindowNext
+{
+    wxWindow *win;
+    wxWindowNext *next;
+} *wxWindowBase::ms_winCaptureNext = NULL;
+wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
+bool wxWindowBase::ms_winCaptureChanging = false;
+
+void wxWindowBase::CaptureMouse()
+{
+    wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
+
+    wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
+
+    ms_winCaptureChanging = true;
+
+    wxWindow *winOld = GetCapture();
+    if ( winOld )
+    {
+        ((wxWindowBase*) winOld)->DoReleaseMouse();
+
+        // save it on stack
+        wxWindowNext *item = new wxWindowNext;
+        item->win = winOld;
+        item->next = ms_winCaptureNext;
+        ms_winCaptureNext = item;
+    }
+    //else: no mouse capture to save
+
+    DoCaptureMouse();
+    ms_winCaptureCurrent = (wxWindow*)this;
+
+    ms_winCaptureChanging = false;
+}
+
+void wxWindowBase::ReleaseMouse()
+{
+    wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
+
+    wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
+
+    wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
+
+    ms_winCaptureChanging = true;
+
+    DoReleaseMouse();
+    ms_winCaptureCurrent = NULL;
+
+    if ( ms_winCaptureNext )
+    {
+        ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
+        ms_winCaptureCurrent = ms_winCaptureNext->win;
+
+        wxWindowNext *item = ms_winCaptureNext;
+        ms_winCaptureNext = item->next;
+        delete item;
+    }
+    //else: stack is empty, no previous capture
+
+    ms_winCaptureChanging = false;
+
+    wxLogTrace(_T("mousecapture"),
+        (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
+        wx_static_cast(void*, GetCapture()));
+}
+
+static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
+{
+    wxMouseCaptureLostEvent event(win->GetId());
+    event.SetEventObject(win);
+    if ( !win->GetEventHandler()->ProcessEvent(event) )
+    {
+        // windows must handle this event, otherwise the app wouldn't behave
+        // correctly if it loses capture unexpectedly; see the discussion here:
+        // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
+        // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
+        wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
+    }
+}
+
+/* static */
+void wxWindowBase::NotifyCaptureLost()
+{
+    // don't do anything if capture lost was expected, i.e. resulted from
+    // a wx call to ReleaseMouse or CaptureMouse:
+    if ( ms_winCaptureChanging )
+        return;
+
+    // if the capture was lost unexpectedly, notify every window that has
+    // capture (on stack or current) about it and clear the stack:
+
+    if ( ms_winCaptureCurrent )
+    {
+        DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
+        ms_winCaptureCurrent = NULL;
+    }
+
+    while ( ms_winCaptureNext )
+    {
+        wxWindowNext *item = ms_winCaptureNext;
+        ms_winCaptureNext = item->next;
+
+        DoNotifyWindowAboutCaptureLost(item->win);
+
+        delete item;
+    }
+}
+
+#if wxUSE_HOTKEY
+
+bool
+wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
+                             int WXUNUSED(modifiers),
+                             int WXUNUSED(keycode))
+{
+    // not implemented
+    return false;
+}
+
+bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
+{
+    // not implemented
+    return false;
+}
+
+#endif // wxUSE_HOTKEY
+
+// ----------------------------------------------------------------------------
+// event processing
+// ----------------------------------------------------------------------------
+
+bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
+{
+#if wxUSE_VALIDATORS
+    // Can only use the validator of the window which
+    // is receiving the event
+    if ( event.GetEventObject() == this )
+    {
+        wxValidator *validator = GetValidator();
+        if ( validator && validator->ProcessEvent(event) )
+        {
+            return true;
+        }
+    }
+#endif // wxUSE_VALIDATORS
+
+    return false;
+}
+
+bool wxWindowBase::TryParent(wxEvent& event)
+{
+    // carry on up the parent-child hierarchy if the propagation count hasn't
+    // reached zero yet
+    if ( event.ShouldPropagate() )
+    {
+        // honour the requests to stop propagation at this window: this is
+        // used by the dialogs, for example, to prevent processing the events
+        // from the dialog controls in the parent frame which rarely, if ever,
+        // makes sense
+        if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
+        {
+            wxWindow *parent = GetParent();
+            if ( parent && !parent->IsBeingDeleted() )
+            {
+                wxPropagateOnce propagateOnce(event);
 
-            wxWindowList::Node *next = node->GetNext();
-            delete node;
-            node = next;
+                return parent->GetEventHandler()->ProcessEvent(event);
+            }
         }
-
-        delete m_constraintsInvolvedIn;
-        m_constraintsInvolvedIn = (wxWindowList *) NULL;
     }
+
+    return wxEvtHandler::TryParent(event);
 }
 
-void wxWindowBase::SetSizer(wxSizer *sizer)
+// ----------------------------------------------------------------------------
+// window relationships
+// ----------------------------------------------------------------------------
+
+wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
 {
-    if (m_windowSizer) delete m_windowSizer;
+    wxCHECK_MSG( GetParent(), NULL,
+                    _T("GetPrev/NextSibling() don't work for TLWs!") );
 
-    m_windowSizer = sizer;
+    wxWindowList& siblings = GetParent()->GetChildren();
+    wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
+    wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
+
+    if ( order == OrderBefore )
+        i = i->GetPrevious();
+    else // OrderAfter
+        i = i->GetNext();
+
+    return i ? i->GetData() : NULL;
 }
 
-bool wxWindowBase::Layout()
+// ----------------------------------------------------------------------------
+// keyboard navigation
+// ----------------------------------------------------------------------------
+
+// Navigates in the specified direction inside this window
+bool wxWindowBase::DoNavigateIn(int flags)
 {
-    int w, h;
-    GetClientSize(&w, &h);
-    
-    // If there is a sizer, use it instead of the constraints
-    if ( GetSizer() )
+#ifdef wxHAS_NATIVE_TAB_TRAVERSAL
+    // native code doesn't process our wxNavigationKeyEvents anyhow
+    wxUnusedVar(flags);
+    return false;
+#else // !wxHAS_NATIVE_TAB_TRAVERSAL
+    wxNavigationKeyEvent eventNav;
+    wxWindow *focused = FindFocus();
+    eventNav.SetCurrentFocus(focused);
+    eventNav.SetEventObject(focused);
+    eventNav.SetFlags(flags);
+    return GetEventHandler()->ProcessEvent(eventNav);
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
+}
+
+bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
+{
+    if ( event.GetKeyCode() != WXK_TAB )
+        return false;
+
+    int flags = wxNavigationKeyEvent::FromTab;
+
+    if ( event.ShiftDown() )
+        flags |= wxNavigationKeyEvent::IsBackward;
+    else
+        flags |= wxNavigationKeyEvent::IsForward;
+
+    if ( event.ControlDown() )
+        flags |= wxNavigationKeyEvent::WinChange;
+
+    Navigate(flags);
+    return true;
+}
+
+void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
+{
+    // check that we're not a top level window
+    wxCHECK_RET( GetParent(),
+                    _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
+
+    // detect the special case when we have nothing to do anyhow and when the
+    // code below wouldn't work
+    if ( win == this )
+        return;
+
+    // find the target window in the siblings list
+    wxWindowList& siblings = GetParent()->GetChildren();
+    wxWindowList::compatibility_iterator i = siblings.Find(win);
+    wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
+
+    // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
+    // can't just move the node around
+    wxWindow *self = (wxWindow *)this;
+    siblings.DeleteObject(self);
+    if ( move == OrderAfter )
     {
-        GetSizer()->SetDimension( 0, 0, w, h );
-        return TRUE;
+        i = i->GetNext();
+    }
+
+    if ( i )
+    {
+        siblings.Insert(i, self);
     }
-    
-    if ( GetConstraints() )
+    else // OrderAfter and win was the last sibling
     {
-        GetConstraints()->width.SetValue(w);
-        GetConstraints()->height.SetValue(h);
+        siblings.Append(self);
     }
-       
-    // Evaluate child constraints
-    ResetConstraints();   // Mark all constraints as unevaluated
-    DoPhase(1);           // Just one phase need if no sizers involved
-    DoPhase(2);
-    SetConstraintSizes(); // Recursively set the real window sizes
-    
-    return TRUE;
 }
 
+// ----------------------------------------------------------------------------
+// focus handling
+// ----------------------------------------------------------------------------
 
-// Do a phase of evaluating constraints: the default behaviour. wxSizers may
-// do a similar thing, but also impose their own 'constraints' and order the
-// evaluation differently.
-bool wxWindowBase::LayoutPhase1(int *noChanges)
+/*static*/ wxWindow* wxWindowBase::FindFocus()
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
-    {
-        return constr->SatisfyConstraints(this, noChanges);
-    }
-    else
-        return TRUE;
+    wxWindowBase *win = DoFindFocus();
+    return win ? win->GetMainWindowOfCompositeControl() : NULL;
 }
 
-bool wxWindowBase::LayoutPhase2(int *noChanges)
+bool wxWindowBase::HasFocus() const
 {
-    *noChanges = 0;
-
-    // Layout children
-    DoPhase(1);
-    DoPhase(2);
-    return TRUE;
+    wxWindowBase *win = DoFindFocus();
+    return win == this ||
+           win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
 }
 
-// Do a phase of evaluating child constraints
-bool wxWindowBase::DoPhase(int phase)
-{
-    int noIterations = 0;
-    int maxIterations = 500;
-    int noChanges = 1;
-    int noFailures = 0;
-    wxWindowList succeeded;
-    while ((noChanges > 0) && (noIterations < maxIterations))
-    {
-        noChanges = 0;
-        noFailures = 0;
-        wxWindowList::Node *node = GetChildren().GetFirst();
-        while (node)
-        {
-            wxWindow *child = node->GetData();
-            if ( !child->IsTopLevel() )
-            {
-                wxLayoutConstraints *constr = child->GetConstraints();
-                if ( constr )
-                {
-                    if ( !succeeded.Find(child) )
-                    {
-                        int tempNoChanges = 0;
-                        bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
-                        noChanges += tempNoChanges;
-                        if ( success )
-                        {
-                            succeeded.Append(child);
-                        }
-                    }
-                }
-            }
-            node = node->GetNext();
-        }
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
 
-        noIterations++;
-    }
+wxWindow* wxGetTopLevelParent(wxWindow *win)
+{
+    while ( win && !win->IsTopLevel() )
+         win = win->GetParent();
 
-    return TRUE;
+    return win;
 }
 
-void wxWindowBase::ResetConstraints()
+#if wxUSE_ACCESSIBILITY
+// ----------------------------------------------------------------------------
+// accessible object for windows
+// ----------------------------------------------------------------------------
+
+// Can return either a child object, or an integer
+// representing the child element, starting from 1.
+wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
-    {
-        constr->left.SetDone(FALSE);
-        constr->top.SetDone(FALSE);
-        constr->right.SetDone(FALSE);
-        constr->bottom.SetDone(FALSE);
-        constr->width.SetDone(FALSE);
-        constr->height.SetDone(FALSE);
-        constr->centreX.SetDone(FALSE);
-        constr->centreY.SetDone(FALSE);
-    }
-    wxWindowList::Node *node = GetChildren().GetFirst();
-    while (node)
-    {
-        wxWindow *win = node->GetData();
-        if ( !win->IsTopLevel() )
-            win->ResetConstraints();
-        node = node->GetNext();
-    }
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// Need to distinguish between setting the 'fake' size for windows and sizers,
-// and setting the real values.
-void wxWindowBase::SetConstraintSizes(bool recurse)
+// Returns the rectangle for this object (id = 0) or a child element (id > 0).
+wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr && constr->left.GetDone() && constr->right.GetDone( ) &&
-            constr->width.GetDone() && constr->height.GetDone())
-    {
-        int x = constr->left.GetValue();
-        int y = constr->top.GetValue();
-        int w = constr->width.GetValue();
-        int h = constr->height.GetValue();
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-        if ( (constr->width.GetRelationship() != wxAsIs ) ||
-             (constr->height.GetRelationship() != wxAsIs) )
+    wxWindow* win = NULL;
+    if (elementId == 0)
+    {
+        win = GetWindow();
+    }
+    else
+    {
+        if (elementId <= (int) GetWindow()->GetChildren().GetCount())
         {
-            SetSize(x, y, w, h);
+            win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
         }
         else
-        {
-            // If we don't want to resize this window, just move it...
-            Move(x, y);
-        }
+            return wxACC_FAIL;
     }
-    else if ( constr )
+    if (win)
     {
-        wxChar *windowClass = GetClassInfo()->GetClassName();
-
-        wxString winName;
-        if ( GetName() == T("") )
-            winName = T("unnamed");
-        else
-            winName = GetName();
-        wxLogDebug( T("Constraint(s) not satisfied for window of type %s, name %s:\n"),
-                (const wxChar *)windowClass,
-                (const wxChar *)winName);
-        if ( !constr->left.GetDone()) wxLogDebug( T("  unsatisfied 'left' constraint.\n")  );
-        if ( !constr->right.GetDone()) wxLogDebug( T("  unsatisfied 'right' constraint.\n")  );
-        if ( !constr->width.GetDone()) wxLogDebug( T("  unsatisfied 'width' constraint.\n")  );
-        if ( !constr->height.GetDone())  wxLogDebug( T("  unsatisfied 'height' constraint.\n")  );
-        wxLogDebug( T("Please check constraints: try adding AsIs() constraints.\n") );
+        rect = win->GetRect();
+        if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
+            rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
+        return wxACC_OK;
     }
 
-    if ( recurse )
-    {
-        wxWindowList::Node *node = GetChildren().GetFirst();
-        while (node)
-        {
-            wxWindow *win = node->GetData();
-            if ( !win->IsTopLevel() )
-                win->SetConstraintSizes();
-            node = node->GetNext();
-        }
-    }
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// Only set the size/position of the constraint (if any)
-void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
+// Navigates from fromId to toId/toObject.
+wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
+                             int* WXUNUSED(toId), wxAccessible** toObject)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    switch (navDir)
     {
-        if ( x != -1 )
+    case wxNAVDIR_FIRSTCHILD:
         {
-            constr->left.SetValue(x);
-            constr->left.SetDone(TRUE);
+            if (GetWindow()->GetChildren().GetCount() == 0)
+                return wxACC_FALSE;
+            wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
+            *toObject = childWindow->GetOrCreateAccessible();
+
+            return wxACC_OK;
         }
-        if ( y != -1 )
+    case wxNAVDIR_LASTCHILD:
         {
-            constr->top.SetValue(y);
-            constr->top.SetDone(TRUE);
+            if (GetWindow()->GetChildren().GetCount() == 0)
+                return wxACC_FALSE;
+            wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
+            *toObject = childWindow->GetOrCreateAccessible();
+
+            return wxACC_OK;
         }
-        if ( w != -1 )
+    case wxNAVDIR_RIGHT:
+    case wxNAVDIR_DOWN:
+    case wxNAVDIR_NEXT:
         {
-            constr->width.SetValue(w);
-            constr->width.SetDone(TRUE);
+            wxWindowList::compatibility_iterator node =
+                wxWindowList::compatibility_iterator();
+            if (fromId == 0)
+            {
+                // Can't navigate to sibling of this window
+                // if we're a top-level window.
+                if (!GetWindow()->GetParent())
+                    return wxACC_NOT_IMPLEMENTED;
+
+                node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
+            }
+            else
+            {
+                if (fromId <= (int) GetWindow()->GetChildren().GetCount())
+                    node = GetWindow()->GetChildren().Item(fromId-1);
+            }
+
+            if (node && node->GetNext())
+            {
+                wxWindow* nextWindow = node->GetNext()->GetData();
+                *toObject = nextWindow->GetOrCreateAccessible();
+                return wxACC_OK;
+            }
+            else
+                return wxACC_FALSE;
         }
-        if ( h != -1 )
+    case wxNAVDIR_LEFT:
+    case wxNAVDIR_UP:
+    case wxNAVDIR_PREVIOUS:
         {
-            constr->height.SetValue(h);
-            constr->height.SetDone(TRUE);
+            wxWindowList::compatibility_iterator node =
+                wxWindowList::compatibility_iterator();
+            if (fromId == 0)
+            {
+                // Can't navigate to sibling of this window
+                // if we're a top-level window.
+                if (!GetWindow()->GetParent())
+                    return wxACC_NOT_IMPLEMENTED;
+
+                node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
+            }
+            else
+            {
+                if (fromId <= (int) GetWindow()->GetChildren().GetCount())
+                    node = GetWindow()->GetChildren().Item(fromId-1);
+            }
+
+            if (node && node->GetPrevious())
+            {
+                wxWindow* previousWindow = node->GetPrevious()->GetData();
+                *toObject = previousWindow->GetOrCreateAccessible();
+                return wxACC_OK;
+            }
+            else
+                return wxACC_FALSE;
         }
     }
+
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-void wxWindowBase::MoveConstraint(int x, int y)
+// Gets the name of the specified object.
+wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    wxString title;
+
+    // If a child, leave wxWidgets to call the function on the actual
+    // child object.
+    if (childId > 0)
+        return wxACC_NOT_IMPLEMENTED;
+
+    // This will eventually be replaced by specialised
+    // accessible classes, one for each kind of wxWidgets
+    // control or window.
+#if wxUSE_BUTTON
+    if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
+        title = ((wxButton*) GetWindow())->GetLabel();
+    else
+#endif
+        title = GetWindow()->GetName();
+
+    if (!title.empty())
     {
-        if ( x != -1 )
-        {
-            constr->left.SetValue(x);
-            constr->left.SetDone(TRUE);
-        }
-        if ( y != -1 )
-        {
-            constr->top.SetValue(y);
-            constr->top.SetDone(TRUE);
-        }
+        *name = title;
+        return wxACC_OK;
     }
+    else
+        return wxACC_NOT_IMPLEMENTED;
 }
 
-void wxWindowBase::GetSizeConstraint(int *w, int *h) const
+// Gets the number of children.
+wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
-    {
-        *w = constr->width.GetValue();
-        *h = constr->height.GetValue();
-    }
-    else
-        GetSize(w, h);
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    *childId = (int) GetWindow()->GetChildren().GetCount();
+    return wxACC_OK;
 }
 
-void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
+// Gets the specified child (starting from 1).
+// If *child is NULL and return value is wxACC_OK,
+// this means that the child is a simple element and
+// not an accessible object.
+wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    if (childId == 0)
     {
-        *w = constr->width.GetValue();
-        *h = constr->height.GetValue();
+        *child = this;
+        return wxACC_OK;
     }
+
+    if (childId > (int) GetWindow()->GetChildren().GetCount())
+        return wxACC_FAIL;
+
+    wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
+    *child = childWindow->GetOrCreateAccessible();
+    if (*child)
+        return wxACC_OK;
     else
-        GetClientSize(w, h);
+        return wxACC_FAIL;
 }
 
-void wxWindowBase::GetPositionConstraint(int *x, int *y) const
+// Gets the parent, or NULL.
+wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
 {
-    wxLayoutConstraints *constr = GetConstraints();
-    if ( constr )
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    wxWindow* parentWindow = GetWindow()->GetParent();
+    if (!parentWindow)
     {
-        *x = constr->left.GetValue();
-        *y = constr->top.GetValue();
+        *parent = NULL;
+        return wxACC_OK;
     }
     else
-        GetPosition(x, y);
+    {
+        *parent = parentWindow->GetOrCreateAccessible();
+        if (*parent)
+            return wxACC_OK;
+        else
+            return wxACC_FAIL;
+    }
 }
 
-#endif // wxUSE_CONSTRAINTS
+// Performs the default action. childId is 0 (the action for this object)
+// or > 0 (the action for a child).
+// Return wxACC_NOT_SUPPORTED if there is no default action for this
+// window (e.g. an edit control).
+wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
+{
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-// ----------------------------------------------------------------------------
-// do Update UI processing for child controls
-// ----------------------------------------------------------------------------
+    return wxACC_NOT_IMPLEMENTED;
+}
 
-// TODO: should this be implemented for the child window rather
-// than the parent? Then you can override it e.g. for wxCheckBox
-// to do the Right Thing rather than having to assume a fixed number
-// of control classes.
-void wxWindowBase::UpdateWindowUI()
+// Gets the default action for this object (0) or > 0 (the action for a child).
+// Return wxACC_OK even if there is no action. actionName is the action, or the empty
+// string if there is no action.
+// The retrieved string describes the action that is performed on an object,
+// not what the object does as a result. For example, a toolbar button that prints
+// a document has a default action of "Press" rather than "Prints the current document."
+wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
 {
-    wxWindowID id = GetId();
-    if ( id > 0 )
-    {
-        wxUpdateUIEvent event(id);
-        event.m_eventObject = this;
-
-        if ( GetEventHandler()->ProcessEvent(event) )
-        {
-            if ( event.GetSetEnabled() )
-                Enable(event.GetEnabled());
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-            if ( event.GetSetText() )
-            {
-                wxControl *control = wxDynamicCast(this, wxControl);
-                if ( control )
-                    control->SetLabel(event.GetText());
-            }
+    return wxACC_NOT_IMPLEMENTED;
+}
 
-#if wxUSE_CHECKBOX
-            wxCheckBox *checkbox = wxDynamicCast(this, wxCheckBox);
-            if ( checkbox )
-            {
-                if ( event.GetSetChecked() )
-                    checkbox->SetValue(event.GetChecked());
-            }
-#endif // wxUSE_CHECKBOX
+// Returns the description for this object or a child.
+wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
+{
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-#if wxUSE_RADIOBUTTON
-            wxRadioButton *radiobtn = wxDynamicCast(this, wxRadioButton);
-            if ( radiobtn )
-            {
-                if ( event.GetSetChecked() )
-                    radiobtn->SetValue(event.GetChecked());
-            }
-#endif // wxUSE_RADIOBUTTON
-        }
+    wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
+    if (!ht.empty())
+    {
+        *description = ht;
+        return wxACC_OK;
     }
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// ----------------------------------------------------------------------------
-// dialog units translations
-// ----------------------------------------------------------------------------
-
-wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
+// Returns help text for this object or a child, similar to tooltip text.
+wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
 {
-    int charWidth = GetCharWidth();
-    int charHeight = GetCharHeight();
-    wxPoint pt2(-1, -1);
-    if (pt.x != -1)
-        pt2.x = (int) ((pt.x * 4) / charWidth) ;
-    if (pt.y != -1)
-        pt2.y = (int) ((pt.y * 8) / charHeight) ;
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-    return pt2;
+    wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
+    if (!ht.empty())
+    {
+        *helpText = ht;
+        return wxACC_OK;
+    }
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
+// Returns the keyboard shortcut for this object or child.
+// Return e.g. ALT+K
+wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
 {
-    int charWidth = GetCharWidth();
-    int charHeight = GetCharHeight();
-    wxPoint pt2(-1, -1);
-    if (pt.x != -1)
-        pt2.x = (int) ((pt.x * charWidth) / 4) ;
-    if (pt.y != -1)
-        pt2.y = (int) ((pt.y * charHeight) / 8) ;
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-    return pt2;
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// ----------------------------------------------------------------------------
-// client data
-// ----------------------------------------------------------------------------
-
-void wxWindowBase::DoSetClientObject( wxClientData *data )
+// Returns a role constant.
+wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
 {
-    wxASSERT_MSG( m_clientDataType != ClientData_Void,
-                  T("can't have both object and void client data") );
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    // If a child, leave wxWidgets to call the function on the actual
+    // child object.
+    if (childId > 0)
+        return wxACC_NOT_IMPLEMENTED;
+
+    if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
+        return wxACC_NOT_IMPLEMENTED;
+#if wxUSE_STATUSBAR
+    if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
+        return wxACC_NOT_IMPLEMENTED;
+#endif
+#if wxUSE_TOOLBAR
+    if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
+        return wxACC_NOT_IMPLEMENTED;
+#endif
 
-    if ( m_clientObject )
-        delete m_clientObject;
+    //*role = wxROLE_SYSTEM_CLIENT;
+    *role = wxROLE_SYSTEM_CLIENT;
+    return wxACC_OK;
 
-    m_clientObject = data;
-    m_clientDataType = ClientData_Object;
+    #if 0
+    return wxACC_NOT_IMPLEMENTED;
+    #endif
 }
 
-wxClientData *wxWindowBase::DoGetClientObject() const
+// Returns a state constant.
+wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
 {
-    wxASSERT_MSG( m_clientDataType == ClientData_Object,
-                  T("this window doesn't have object client data") );
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    // If a child, leave wxWidgets to call the function on the actual
+    // child object.
+    if (childId > 0)
+        return wxACC_NOT_IMPLEMENTED;
+
+    if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
+        return wxACC_NOT_IMPLEMENTED;
 
-    return m_clientObject;
+#if wxUSE_STATUSBAR
+    if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
+        return wxACC_NOT_IMPLEMENTED;
+#endif
+#if wxUSE_TOOLBAR
+    if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
+        return wxACC_NOT_IMPLEMENTED;
+#endif
+
+    *state = 0;
+    return wxACC_OK;
+
+    #if 0
+    return wxACC_NOT_IMPLEMENTED;
+    #endif
 }
 
-void wxWindowBase::DoSetClientData( void *data )
+// Returns a localized string representing the value for the object
+// or child.
+wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
 {
-    wxASSERT_MSG( m_clientDataType != ClientData_Object,
-                  T("can't have both object and void client data") );
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-    m_clientData = data;
-    m_clientDataType = ClientData_Void;
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-void *wxWindowBase::DoGetClientData() const
+// Selects the object or child.
+wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
 {
-    wxASSERT_MSG( m_clientDataType == ClientData_Void,
-                  T("this window doesn't have void client data") );
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-    return m_clientData;
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// ----------------------------------------------------------------------------
-// event handlers
-// ----------------------------------------------------------------------------
-
-// propagate the colour change event to the subwindows
-void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
+// Gets the window with the keyboard focus.
+// If childId is 0 and child is NULL, no object in
+// this subhierarchy has the focus.
+// If this object has the focus, child should be 'this'.
+wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
 {
-    wxWindowList::Node *node = GetChildren().GetFirst();
-    while ( node )
-    {
-        // Only propagate to non-top-level windows
-        wxWindow *win = node->GetData();
-        if ( !win->IsTopLevel() )
-        {
-            wxSysColourChangedEvent event2;
-            event.m_eventObject = win;
-            win->GetEventHandler()->ProcessEvent(event2);
-        }
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
 
-        node = node->GetNext();
-    }
+    return wxACC_NOT_IMPLEMENTED;
 }
 
-// the default action is to populate dialog with data when it's created
-void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
+#if wxUSE_VARIANT
+// Gets a variant representing the selected children
+// of this object.
+// Acceptable values:
+// - a null variant (IsNull() returns true)
+// - a list variant (GetType() == wxT("list")
+// - an integer representing the selected child element,
+//   or 0 if this object is selected (GetType() == wxT("long")
+// - a "void*" pointer to a wxAccessible child object
+wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
 {
-    TransferDataToWindow();
+    wxASSERT( GetWindow() != NULL );
+    if (!GetWindow())
+        return wxACC_FAIL;
+
+    return wxACC_NOT_IMPLEMENTED;
 }
+#endif // wxUSE_VARIANT
+
+#endif // wxUSE_ACCESSIBILITY
 
 // ----------------------------------------------------------------------------
-// list classes implementation
+// RTL support
 // ----------------------------------------------------------------------------
 
-void wxWindowListNode::DeleteData()
+wxCoord
+wxWindowBase::AdjustForLayoutDirection(wxCoord x,
+                                       wxCoord width,
+                                       wxCoord widthTotal) const
 {
-    delete (wxWindow *)GetData();
+    if ( GetLayoutDirection() == wxLayout_RightToLeft )
+    {
+        x = widthTotal - x - width;
+    }
+
+    return x;
 }
 
+