Add a helper wxApp::GetValidTraits() method.

[wxWidgets.git] / src / common / wincmn.cpp

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index b9942fa0a85daf51156728b385cf1417f37fd885..3c2c0f4e1d363f6264f3babe188074d2ebb1670a 100644 (file)
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        src/common/window.cpp
+// Name:        src/common/wincmn.cpp

 // Purpose:     common (to all ports) wxWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Modified by:
 // Purpose:     common (to all ports) wxWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Modified by:


@@ -38,6 +38,7 @@
     #include "wx/settings.h"
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"
     #include "wx/settings.h"
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"

+    #include "wx/msgout.h"

     #include "wx/statusbr.h"
     #include "wx/toolbar.h"
     #include "wx/dcclient.h"
     #include "wx/statusbr.h"
     #include "wx/toolbar.h"
     #include "wx/dcclient.h"


@@ -71,17 +72,12 @@
     #include "wx/sysopt.h"
 #endif
 
     #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"
 #include "wx/platinfo.h"

+#include "wx/private/window.h"
+
+#ifdef __WINDOWS__
+    #include "wx/msw/wrapwin.h"
+#endif

 
 // Windows List
 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
 
 // Windows List
 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;


@@ -91,6 +87,8 @@ WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
 wxMenu *wxCurrentPopupMenu = NULL;
 #endif // wxUSE_MENUS
 
 wxMenu *wxCurrentPopupMenu = NULL;
 #endif // wxUSE_MENUS
 

+extern WXDLLEXPORT_DATA(const char) wxPanelNameStr[] = "panel";
+

 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------


@@ -111,12 +109,145 @@ BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 #endif // wxUSE_HELP
 
     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 #endif // wxUSE_HELP
 

+    EVT_SIZE(wxWindowBase::InternalOnSize)

 END_EVENT_TABLE()
 
 // ============================================================================
 // implementation of the common functionality of the wxWindow class
 // ============================================================================
 
 END_EVENT_TABLE()
 
 // ============================================================================
 // implementation of the common functionality of the wxWindow class
 // ============================================================================
 

+// ----------------------------------------------------------------------------
+// XTI
+// ----------------------------------------------------------------------------
+
+#if wxUSE_EXTENDED_RTTI
+
+// windows that are created from a parent window during its Create method, 
+// eg. spin controls in a calendar controls must never been streamed out 
+// separately otherwise chaos occurs. Right now easiest is to test for negative ids, 
+// as windows with negative ids never can be recreated anyway
+
+
+bool wxWindowStreamingCallback( const wxObject *object, wxObjectWriter *, 
+                               wxObjectWriterCallback *, const wxStringToAnyHashMap & )
+{
+    const wxWindow * win = wx_dynamic_cast(const wxWindow*, object);
+    if ( win && win->GetId() < 0 )
+        return false;
+    return true;
+}
+
+wxIMPLEMENT_DYNAMIC_CLASS_XTI_CALLBACK(wxWindow, wxWindowBase, "wx/window.h", \
+                                       wxWindowStreamingCallback)
+
+// make wxWindowList known before the property is used
+
+wxCOLLECTION_TYPE_INFO( wxWindow*, wxWindowList );
+
+template<> void wxCollectionToVariantArray( wxWindowList const &theList, 
+                                           wxAnyList &value)
+{
+    wxListCollectionToAnyList<wxWindowList::compatibility_iterator>( theList, value );
+}
+
+wxDEFINE_FLAGS( wxWindowStyle )
+
+wxBEGIN_FLAGS( wxWindowStyle )
+// new style border flags, we put them first to
+// use them for streaming out
+
+wxFLAGS_MEMBER(wxBORDER_SIMPLE)
+wxFLAGS_MEMBER(wxBORDER_SUNKEN)
+wxFLAGS_MEMBER(wxBORDER_DOUBLE)
+wxFLAGS_MEMBER(wxBORDER_RAISED)
+wxFLAGS_MEMBER(wxBORDER_STATIC)
+wxFLAGS_MEMBER(wxBORDER_NONE)
+
+// old style border flags
+wxFLAGS_MEMBER(wxSIMPLE_BORDER)
+wxFLAGS_MEMBER(wxSUNKEN_BORDER)
+wxFLAGS_MEMBER(wxDOUBLE_BORDER)
+wxFLAGS_MEMBER(wxRAISED_BORDER)
+wxFLAGS_MEMBER(wxSTATIC_BORDER)
+wxFLAGS_MEMBER(wxBORDER)
+
+// standard window styles
+wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
+wxFLAGS_MEMBER(wxCLIP_CHILDREN)
+wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
+wxFLAGS_MEMBER(wxWANTS_CHARS)
+wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
+wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
+wxFLAGS_MEMBER(wxVSCROLL)
+wxFLAGS_MEMBER(wxHSCROLL)
+
+wxEND_FLAGS( wxWindowStyle )
+
+wxBEGIN_PROPERTIES_TABLE(wxWindow)
+wxEVENT_PROPERTY( Close, wxEVT_CLOSE_WINDOW, wxCloseEvent)
+wxEVENT_PROPERTY( Create, wxEVT_CREATE, wxWindowCreateEvent )
+wxEVENT_PROPERTY( Destroy, wxEVT_DESTROY, wxWindowDestroyEvent )
+// Always constructor Properties first
+
+wxREADONLY_PROPERTY( Parent,wxWindow*, GetParent, wxEMPTY_PARAMETER_VALUE, \
+                    0 /*flags*/, wxT("Helpstring"), wxT("group"))
+wxPROPERTY( Id,wxWindowID, SetId, GetId, -1 /*wxID_ANY*/, 0 /*flags*/, \
+           wxT("Helpstring"), wxT("group") )
+wxPROPERTY( Position,wxPoint, SetPosition, GetPosition, wxDefaultPosition, \
+           0 /*flags*/, wxT("Helpstring"), wxT("group")) // pos
+wxPROPERTY( Size,wxSize, SetSize, GetSize, wxDefaultSize, 0 /*flags*/, \
+           wxT("Helpstring"), wxT("group")) // size
+wxPROPERTY( WindowStyle, long, SetWindowStyleFlag, GetWindowStyleFlag, \
+           wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // style
+wxPROPERTY( Name,wxString, SetName, GetName, wxEmptyString, 0 /*flags*/, \
+           wxT("Helpstring"), wxT("group") )
+
+// Then all relations of the object graph
+
+wxREADONLY_PROPERTY_COLLECTION( Children, wxWindowList, wxWindowBase*, \
+                               GetWindowChildren, wxPROP_OBJECT_GRAPH /*flags*/, \
+                               wxT("Helpstring"), wxT("group"))
+
+// and finally all other properties
+
+wxPROPERTY( ExtraStyle, long, SetExtraStyle, GetExtraStyle, wxEMPTY_PARAMETER_VALUE, \
+           0 /*flags*/, wxT("Helpstring"), wxT("group")) // extstyle
+wxPROPERTY( BackgroundColour, wxColour, SetBackgroundColour, GetBackgroundColour, \
+           wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // bg
+wxPROPERTY( ForegroundColour, wxColour, SetForegroundColour, GetForegroundColour, \
+           wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, wxT("Helpstring"), wxT("group")) // fg
+wxPROPERTY( Enabled, bool, Enable, IsEnabled, wxAny((bool)true), 0 /*flags*/, \
+           wxT("Helpstring"), wxT("group"))
+wxPROPERTY( Shown, bool, Show, IsShown, wxAny((bool)true), 0 /*flags*/, \
+           wxT("Helpstring"), wxT("group"))
+
+#if 0
+// possible property candidates (not in xrc) or not valid in all subclasses
+wxPROPERTY( Title,wxString, SetTitle, GetTitle, wxEmptyString )
+wxPROPERTY( Font, wxFont, SetFont, GetWindowFont , )
+wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxEmptyString )
+// MaxHeight, Width, MinHeight, Width
+// TODO switch label to control and title to toplevels
+
+wxPROPERTY( ThemeEnabled, bool, SetThemeEnabled, GetThemeEnabled, )
+//wxPROPERTY( Cursor, wxCursor, SetCursor, GetCursor, )
+// wxPROPERTY( ToolTip, wxString, SetToolTip, GetToolTipText, )
+wxPROPERTY( AutoLayout, bool, SetAutoLayout, GetAutoLayout, )
+#endif
+wxEND_PROPERTIES_TABLE()
+
+wxEMPTY_HANDLERS_TABLE(wxWindow)
+
+wxCONSTRUCTOR_DUMMY(wxWindow)
+
+#else
+
+#ifndef __WXUNIVERSAL__
+IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowBase)
+#endif
+
+#endif
+

 // ----------------------------------------------------------------------------
 // initialization
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // initialization
 // ----------------------------------------------------------------------------


@@ -125,7 +256,7 @@ END_EVENT_TABLE()
 wxWindowBase::wxWindowBase()
 {
     // no window yet, no parent nor children
 wxWindowBase::wxWindowBase()
 {
     // no window yet, no parent nor children

-    m_parent = (wxWindow *)NULL;
+    m_parent = NULL;

     m_windowId = wxID_ANY;
 
     // no constraints on the minimal window size
     m_windowId = wxID_ANY;
 
     // no constraints on the minimal window size


@@ -146,7 +277,7 @@ wxWindowBase::wxWindowBase()
 
 #if wxUSE_VALIDATORS
     // no validator
 
 #if wxUSE_VALIDATORS
     // no validator

-    m_windowValidator = (wxValidator *) NULL;
+    m_windowValidator = NULL;

 #endif // wxUSE_VALIDATORS
 
     // the colours/fonts are default for now, so leave m_font,
 #endif // wxUSE_VALIDATORS
 
     // the colours/fonts are default for now, so leave m_font,


@@ -162,28 +293,28 @@ wxWindowBase::wxWindowBase()
     m_exStyle =
     m_windowStyle = 0;
 
     m_exStyle =
     m_windowStyle = 0;
 

-    m_backgroundStyle = wxBG_STYLE_SYSTEM;
+    m_backgroundStyle = wxBG_STYLE_ERASE;

 
 #if wxUSE_CONSTRAINTS
     // no constraints whatsoever
 
 #if wxUSE_CONSTRAINTS
     // no constraints whatsoever

-    m_constraints = (wxLayoutConstraints *) NULL;
-    m_constraintsInvolvedIn = (wxWindowList *) NULL;
+    m_constraints = NULL;
+    m_constraintsInvolvedIn = NULL;

 #endif // wxUSE_CONSTRAINTS
 
 #endif // wxUSE_CONSTRAINTS
 

-    m_windowSizer = (wxSizer *) NULL;
-    m_containingSizer = (wxSizer *) NULL;
+    m_windowSizer = NULL;
+    m_containingSizer = NULL;

     m_autoLayout = false;
 
 #if wxUSE_DRAG_AND_DROP
     m_autoLayout = false;
 
 #if wxUSE_DRAG_AND_DROP

-    m_dropTarget = (wxDropTarget *)NULL;
+    m_dropTarget = NULL;

 #endif // wxUSE_DRAG_AND_DROP
 
 #if wxUSE_TOOLTIPS
 #endif // wxUSE_DRAG_AND_DROP
 
 #if wxUSE_TOOLTIPS

-    m_tooltip = (wxToolTip *)NULL;
+    m_tooltip = NULL;

 #endif // wxUSE_TOOLTIPS
 
 #if wxUSE_CARET
 #endif // wxUSE_TOOLTIPS
 
 #if wxUSE_CARET

-    m_caret = (wxCaret *)NULL;
+    m_caret = NULL;

 #endif // wxUSE_CARET
 
 #if wxUSE_PALETTE
 #endif // wxUSE_CARET
 
 #if wxUSE_PALETTE


@@ -196,7 +327,7 @@ wxWindowBase::wxWindowBase()
 
     m_virtualSize = wxDefaultSize;
 
 
     m_virtualSize = wxDefaultSize;
 

-    m_scrollHelper = (wxScrollHelper *) NULL;
+    m_scrollHelper = NULL;

 
     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 #if wxUSE_SYSTEM_OPTIONS
 
     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 #if wxUSE_SYSTEM_OPTIONS


@@ -209,7 +340,9 @@ wxWindowBase::wxWindowBase()
     // Whether we're using the current theme for this window (wxGTK only for now)
     m_themeEnabled = false;
 
     // Whether we're using the current theme for this window (wxGTK only for now)
     m_themeEnabled = false;
 

-    // VZ: this one shouldn't exist...
+    // This is set to true by SendDestroyEvent() which should be called by the
+    // most derived class to ensure that the destruction event is sent as soon
+    // as possible to allow its handlers to still see the undestroyed window

     m_isBeingDeleted = false;
 
     m_freezeCount = 0;
     m_isBeingDeleted = false;
 
     m_freezeCount = 0;


@@ -219,28 +352,16 @@ wxWindowBase::wxWindowBase()
 bool wxWindowBase::CreateBase(wxWindowBase *parent,
                               wxWindowID id,
                               const wxPoint& WXUNUSED(pos),
 bool wxWindowBase::CreateBase(wxWindowBase *parent,
                               wxWindowID id,
                               const wxPoint& WXUNUSED(pos),

-                              const wxSize& WXUNUSED(size),
+                              const wxSize& size,

                               long style,
                               long style,

-                              const wxValidator& wxVALIDATOR_PARAM(validator),

                               const wxString& name)
 {
                               const wxString& name)
 {

-#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),
     // 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") );
+                  wxT("invalid id value") );

 
     // generate a new id if the user doesn't care about it
     if ( id == wxID_ANY )
 
     // generate a new id if the user doesn't care about it
     if ( id == wxID_ANY )


@@ -257,9 +378,32 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
     // flags by updating the window dynamically and we don't need this here
     m_windowStyle = style;
 
     // flags by updating the window dynamically and we don't need this here
     m_windowStyle = style;
 

+    // assume the user doesn't want this window to shrink beneath its initial
+    // size, this worked like this in wxWidgets 2.8 and before and generally
+    // often makes sense for child windows (for top level ones it definitely
+    // does not as the user should be able to resize the window)
+    //
+    // note that we can't use IsTopLevel() from ctor
+    if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
+        SetMinSize(size);
+

     SetName(name);
     SetParent(parent);
 
     SetName(name);
     SetParent(parent);
 

+    return true;
+}
+
+bool wxWindowBase::CreateBase(wxWindowBase *parent,
+                              wxWindowID id,
+                              const wxPoint& pos,
+                              const wxSize& size,
+                              long style,
+                              const wxValidator& wxVALIDATOR_PARAM(validator),
+                              const wxString& name)
+{
+    if ( !CreateBase(parent, id, pos, size, style, name) )
+        return false;
+

 #if wxUSE_VALIDATORS
     SetValidator(validator);
 #endif // wxUSE_VALIDATORS
 #if wxUSE_VALIDATORS
     SetValidator(validator);
 #endif // wxUSE_VALIDATORS


@@ -277,7 +421,7 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
 
 bool wxWindowBase::ToggleWindowStyle(int flag)
 {
 
 bool wxWindowBase::ToggleWindowStyle(int flag)
 {

-    wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
+    wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );

 
     bool rc;
     long style = GetWindowStyleFlag();
 
     bool rc;
     long style = GetWindowStyleFlag();


@@ -317,6 +461,12 @@ wxWindowBase::~wxWindowBase()
     // we weren't a dialog class
     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 
     // we weren't a dialog class
     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 

+    // Any additional event handlers should be popped before the window is
+    // deleted as otherwise the last handler will be left with a dangling
+    // pointer to this window result in a difficult to diagnose crash later on.
+    wxASSERT_MSG( GetEventHandler() == this,
+                    wxT("any pushed event handlers must have been removed") );
+

 #if wxUSE_MENUS
     // The associated popup menu can still be alive, disassociate from it in
     // this case
 #if wxUSE_MENUS
     // The associated popup menu can still be alive, disassociate from it in
     // this case


@@ -348,8 +498,7 @@ wxWindowBase::~wxWindowBase()
         // This removes any dangling pointers to this window in other windows'
         // constraintsInvolvedIn lists.
         UnsetConstraints(m_constraints);
         // This removes any dangling pointers to this window in other windows'
         // constraintsInvolvedIn lists.
         UnsetConstraints(m_constraints);

-        delete m_constraints;
-        m_constraints = NULL;
+        wxDELETE(m_constraints);

     }
 #endif // wxUSE_CONSTRAINTS
 
     }
 #endif // wxUSE_CONSTRAINTS
 


@@ -379,8 +528,24 @@ wxWindowBase::~wxWindowBase()
 #endif
 }
 
 #endif
 }
 

+bool wxWindowBase::IsBeingDeleted() const
+{
+    return m_isBeingDeleted ||
+            (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
+}
+

 void wxWindowBase::SendDestroyEvent()
 {
 void wxWindowBase::SendDestroyEvent()
 {

+    if ( m_isBeingDeleted )
+    {
+        // we could have been already called from a more derived class dtor,
+        // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
+        // should be simply ignored
+        return;
+    }
+
+    m_isBeingDeleted = true;
+

     wxWindowDestroyEvent event;
     event.SetEventObject(this);
     event.SetId(GetId());
     wxWindowDestroyEvent event;
     event.SetEventObject(this);
     event.SetId(GetId());


@@ -389,6 +554,15 @@ void wxWindowBase::SendDestroyEvent()
 
 bool wxWindowBase::Destroy()
 {
 
 bool wxWindowBase::Destroy()
 {

+    // If our handle is invalid, it means that this window has never been
+    // created, either because creating it failed or, more typically, because
+    // this wxWindow object was default-constructed and its Create() method had
+    // never been called. As we didn't send wxWindowCreateEvent in this case
+    // (which is sent after successful creation), don't send the matching
+    // wxWindowDestroyEvent neither.
+    if ( GetHandle() )
+        SendDestroyEvent();
+

     delete this;
 
     return true;
     delete this;
 
     return true;


@@ -417,11 +591,11 @@ bool wxWindowBase::DestroyChildren()
 
         wxWindow *child = node->GetData();
 
 
         wxWindow *child = node->GetData();
 

-        // 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;
+        // note that we really want to delete it immediately so don't call the
+        // possible overridden Destroy() version which might not delete the
+        // child immediately resulting in problems with our (top level) child
+        // outliving its parent
+        child->wxWindowBase::Destroy();

 
         wxASSERT_MSG( !GetChildren().Find(child),
                       wxT("child didn't remove itself using RemoveChild()") );
 
         wxASSERT_MSG( !GetChildren().Find(child),
                       wxT("child didn't remove itself using RemoveChild()") );


@@ -438,7 +612,7 @@ bool wxWindowBase::DestroyChildren()
 void wxWindowBase::DoCentre(int dir)
 {
     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 void wxWindowBase::DoCentre(int dir)
 {
     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),

-                 _T("this method only implements centering child windows") );
+                 wxT("this method only implements centering child windows") );

 
     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 }
 
     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 }


@@ -446,24 +620,17 @@ void wxWindowBase::DoCentre(int dir)
 // fits the window around the children
 void wxWindowBase::Fit()
 {
 // fits the window around the children
 void wxWindowBase::Fit()
 {

-    if ( !GetChildren().empty() )
-    {
-        SetSize(GetBestSize());
-    }
-    //else: do nothing if we have no children
+    SetSize(GetBestSize());

 }
 
 // fits virtual size (ie. scrolled area etc.) around children
 void wxWindowBase::FitInside()
 {
 }
 
 // fits virtual size (ie. scrolled area etc.) around children
 void wxWindowBase::FitInside()
 {

-    if ( GetChildren().GetCount() > 0 )
-    {
-        SetVirtualSize( GetBestVirtualSize() );
-    }
+    SetVirtualSize( GetBestVirtualSize() );

 }
 
 // On Mac, scrollbars are explicitly children.
 }
 
 // On Mac, scrollbars are explicitly children.

-#ifdef __WXMAC__
+#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)

 static bool wxHasRealChildren(const wxWindowBase* win)
 {
     int realChildCount = 0;
 static bool wxHasRealChildren(const wxWindowBase* win)
 {
     int realChildCount = 0;


@@ -473,7 +640,11 @@ static bool wxHasRealChildren(const wxWindowBase* win)
           node = node->GetNext() )
     {
         wxWindow *win = node->GetData();
           node = node->GetNext() )
     {
         wxWindow *win = node->GetData();

-        if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
+        if ( !win->IsTopLevel() && win->IsShown()
+#if wxUSE_SCROLLBAR
+            && !wxDynamicCast(win, wxScrollBar)
+#endif
+            )

             realChildCount ++;
     }
     return (realChildCount > 0);
             realChildCount ++;
     }
     return (realChildCount > 0);


@@ -539,7 +710,7 @@ wxSize wxWindowBase::DoGetBestSize() const
     }
 #endif // wxUSE_CONSTRAINTS
     else if ( !GetChildren().empty()
     }
 #endif // wxUSE_CONSTRAINTS
     else if ( !GetChildren().empty()

-#ifdef __WXMAC__
+#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)

               && wxHasRealChildren(this)
 #endif
               )
               && wxHasRealChildren(this)
 #endif
               )


@@ -588,19 +759,14 @@ wxSize wxWindowBase::DoGetBestSize() const
     }
     else // ! has children
     {
     }
     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() )
         {
         wxSize size = GetMinSize();
         if ( !size.IsFullySpecified() )
         {

-            size.SetDefaults(GetSize());
-            wxConstCast(this, wxWindowBase)->SetMinSize(size);
+            // if the window doesn't define its best size we assume that it can
+            // be arbitrarily small -- usually this is not the case, of course,
+            // but we have no way to know what the limit is, it should really
+            // override DoGetBestClientSize() itself to tell us
+            size.SetDefaults(wxSize(1, 1));

         }
 
         // return as-is, unadjusted by the client size difference.
         }
 
         // return as-is, unadjusted by the client size difference.


@@ -618,9 +784,10 @@ wxSize wxWindowBase::DoGetBestSize() const
 // 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
 // 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)
+static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)

 {
 {

-    int rc = wxSystemSettings::GetMetric(what);
+    int rc = wxSystemSettings::GetMetric(
+        what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));

     if ( rc == -1 )
     {
         switch ( what )
     if ( rc == -1 )
     {
         switch ( what )


@@ -638,7 +805,7 @@ static int wxGetMetricOrDefault(wxSystemMetric what)
                 break;
 
             default:
                 break;
 
             default:

-                wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
+                wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );

                 rc = 0;
         }
     }
                 rc = 0;
         }
     }


@@ -658,27 +825,27 @@ wxSize wxWindowBase::GetWindowBorderSize() const
 
         case wxBORDER_SIMPLE:
         case wxBORDER_STATIC:
 
         case wxBORDER_SIMPLE:
         case wxBORDER_STATIC:

-            size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
-            size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
+            size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
+            size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);

             break;
 
         case wxBORDER_SUNKEN:
         case wxBORDER_RAISED:
             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));
+            size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
+                           wxGetMetricOrDefault(wxSYS_BORDER_X, this));
+            size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
+                           wxGetMetricOrDefault(wxSYS_BORDER_Y, this));

             break;
 
         case wxBORDER_DOUBLE:
             break;
 
         case wxBORDER_DOUBLE:

-            size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
-                        wxGetMetricOrDefault(wxSYS_BORDER_X);
-            size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
-                        wxGetMetricOrDefault(wxSYS_BORDER_Y);
+            size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
+                        wxGetMetricOrDefault(wxSYS_BORDER_X, this);
+            size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
+                        wxGetMetricOrDefault(wxSYS_BORDER_Y, this);

             break;
 
         default:
             break;
 
         default:

-            wxFAIL_MSG(_T("Unknown border style."));
+            wxFAIL_MSG(wxT("Unknown border style."));

             break;
     }
 
             break;
     }
 


@@ -686,19 +853,100 @@ wxSize wxWindowBase::GetWindowBorderSize() const
     return size*2;
 }
 
     return size*2;
 }
 

+bool
+wxWindowBase::InformFirstDirection(int direction,
+                                   int size,
+                                   int availableOtherDir)
+{
+    return GetSizer() && GetSizer()->InformFirstDirection(direction,
+                                                          size,
+                                                          availableOtherDir);
+}
+

 wxSize wxWindowBase::GetEffectiveMinSize() const
 {
     // merge the best size with the min size, giving priority to the min size
     wxSize min = GetMinSize();
 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)
     {
         wxSize best = GetBestSize();
         if (min.x == wxDefaultCoord) min.x =  best.x;
         if (min.y == wxDefaultCoord) min.y =  best.y;
     }
     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
     {
         wxSize best = GetBestSize();
         if (min.x == wxDefaultCoord) min.x =  best.x;
         if (min.y == wxDefaultCoord) min.y =  best.y;
     }

+

     return min;
 }
 
     return min;
 }
 

+wxSize wxWindowBase::DoGetBorderSize() const
+{
+    // there is one case in which we can implement it for all ports easily
+    if ( GetBorder() == wxBORDER_NONE )
+        return wxSize(0, 0);
+
+    // otherwise use the difference between the real size and the client size
+    // as a fallback: notice that this is incorrect in general as client size
+    // also doesn't take the scrollbars into account
+    return GetSize() - GetClientSize();
+}
+
+wxSize wxWindowBase::GetBestSize() const
+{
+    if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
+        return m_bestSizeCache;
+
+    // call DoGetBestClientSize() first, if a derived class overrides it wants
+    // it to be used
+    wxSize size = DoGetBestClientSize();
+    if ( size != wxDefaultSize )
+        size += DoGetBorderSize();
+    else
+        size = DoGetBestSize();
+
+    // Ensure that the best size is at least as large as min size.
+    size.IncTo(GetMinSize());
+
+    // And not larger than max size.
+    size.DecToIfSpecified(GetMaxSize());
+
+    // Finally cache result and return.
+    CacheBestSize(size);
+    return size;
+}
+
+int wxWindowBase::GetBestHeight(int width) const
+{
+    const int height = DoGetBestClientHeight(width);
+
+    return height == wxDefaultCoord
+            ? GetBestSize().y
+            : height + DoGetBorderSize().y;
+}
+
+int wxWindowBase::GetBestWidth(int height) const
+{
+    const int width = DoGetBestClientWidth(height);
+
+    return width == wxDefaultCoord
+            ? GetBestSize().x
+            : width + DoGetBorderSize().x;
+}
+
+void wxWindowBase::SetMinSize(const wxSize& minSize)
+{
+    m_minWidth = minSize.x;
+    m_minHeight = minSize.y;
+
+    InvalidateBestSize();
+}
+
+void wxWindowBase::SetMaxSize(const wxSize& maxSize)
+{
+    m_maxWidth = maxSize.x;
+    m_maxHeight = maxSize.y;
+
+    InvalidateBestSize();
+}

 
 void wxWindowBase::SetInitialSize(const wxSize& size)
 {
 
 void wxWindowBase::SetInitialSize(const wxSize& size)
 {


@@ -759,22 +1007,19 @@ void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
             break;
 
         case wxWINDOW_VARIANT_SMALL:
             break;
 
         case wxWINDOW_VARIANT_SMALL:

-            size *= 3;
-            size /= 4;
+            size = wxRound(size * 3.0 / 4.0);

             break;
 
         case wxWINDOW_VARIANT_MINI:
             break;
 
         case wxWINDOW_VARIANT_MINI:

-            size *= 2;
-            size /= 3;
+            size = wxRound(size * 2.0 / 3.0);

             break;
 
         case wxWINDOW_VARIANT_LARGE:
             break;
 
         case wxWINDOW_VARIANT_LARGE:

-            size *= 5;
-            size /= 4;
+            size = wxRound(size * 5.0 / 4.0);

             break;
 
         default:
             break;
 
         default:

-            wxFAIL_MSG(_T("unexpected window variant"));
+            wxFAIL_MSG(wxT("unexpected window variant"));

             break;
     }
 
             break;
     }
 


@@ -788,7 +1033,7 @@ void wxWindowBase::DoSetSizeHints( int minW, int minH,
 {
     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 {
     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!") );
+                 wxT("min width/height must be less than max width/height!") );

 
     m_minWidth = minW;
     m_maxWidth = maxW;
 
     m_minWidth = minW;
     m_maxWidth = maxW;


@@ -846,7 +1091,7 @@ void wxWindowBase::SendSizeEvent(int flags)
     wxSizeEvent event(GetSize(), GetId());
     event.SetEventObject(this);
     if ( flags & wxSEND_EVENT_POST )
     wxSizeEvent event(GetSize(), GetId());
     event.SetEventObject(this);
     if ( flags & wxSEND_EVENT_POST )

-        wxPostEvent(this, event);
+        wxPostEvent(GetEventHandler(), event);

     else
         HandleWindowEvent(event);
 }
     else
         HandleWindowEvent(event);
 }


@@ -858,6 +1103,20 @@ void wxWindowBase::SendSizeEventToParent(int flags)
         parent->SendSizeEvent(flags);
 }
 
         parent->SendSizeEvent(flags);
 }
 

+bool wxWindowBase::HasScrollbar(int orient) const
+{
+    // if scrolling in the given direction is disabled, we can't have the
+    // corresponding scrollbar no matter what
+    if ( !CanScroll(orient) )
+        return false;
+
+    const wxSize sizeVirt = GetVirtualSize();
+    const wxSize sizeClient = GetClientSize();
+
+    return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
+                                  : sizeVirt.y > sizeClient.y;
+}
+

 // ----------------------------------------------------------------------------
 // show/hide/enable/disable the window
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // show/hide/enable/disable the window
 // ----------------------------------------------------------------------------


@@ -883,18 +1142,29 @@ bool wxWindowBase::IsEnabled() const
 
 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 {
 
 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 {

+    // Under some platforms there is no need to update the window state
+    // explicitly, it will become disabled when its parent is. On other ones we
+    // do need to disable all windows recursively though.

 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
     DoEnable(enabled);
 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 
 #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() )
+    // Disabling a top level window is typically done when showing a modal
+    // dialog and we don't need to disable its children in this case, they will
+    // be logically disabled anyhow (i.e. their IsEnabled() will return false)
+    // and the TLW won't accept any input for them. Moreover, explicitly
+    // disabling them would look ugly as the entire TLW would be greyed out
+    // whenever a modal dialog is shown and no native applications under any
+    // platform behave like this.
+    if ( IsTopLevel() && !enabled )

         return;
 
         return;
 

+    // When disabling (or enabling back) a non-TLW window we need to
+    // recursively propagate the change of the state to its children, otherwise
+    // they would still show as enabled even though they wouldn't actually
+    // accept any input (at least under MSW where children don't accept input
+    // if any of the windows in their parent chain is enabled).
+#ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT

     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
           node;
           node = node->GetNext() )
     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
           node;
           node = node->GetNext() )


@@ -903,6 +1173,7 @@ void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
         if ( !child->IsTopLevel() && child->IsThisEnabled() )
             child->NotifyWindowOnEnableChange(enabled);
     }
         if ( !child->IsTopLevel() && child->IsThisEnabled() )
             child->NotifyWindowOnEnableChange(enabled);
     }

+#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)

 }
 
 bool wxWindowBase::Enable(bool enable)
 }
 
 bool wxWindowBase::Enable(bool enable)


@@ -912,14 +1183,10 @@ bool wxWindowBase::Enable(bool enable)
 
     m_isEnabled = enable;
 
 
     m_isEnabled = enable;
 

+    // If we call DoEnable() from NotifyWindowOnEnableChange(), we don't need
+    // to do it from here.

 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
     DoEnable(enable);
 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
     DoEnable(enable);

-#else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
-    wxWindowBase * const parent = GetParent();
-    if( !IsTopLevel() && parent && !parent->IsEnabled() )
-    {
-        return true;
-    }

 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 
     NotifyWindowOnEnableChange(enable);
 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 
     NotifyWindowOnEnableChange(enable);


@@ -992,9 +1259,27 @@ void wxWindowBase::Thaw()
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// reparenting the window
+// Dealing with parents and children.

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

+bool wxWindowBase::IsDescendant(wxWindowBase* win) const
+{
+    // Iterate until we find this window in the parent chain or exhaust it.
+    while ( win )
+    {
+        if ( win == this )
+            return true;
+
+        // Stop iterating on reaching the top level window boundary.
+        if ( win->IsTopLevel() )
+            break;
+
+        win = win->GetParent();
+    }
+
+    return false;
+}
+

 void wxWindowBase::AddChild(wxWindowBase *child)
 {
     wxCHECK_RET( child, wxT("can't add a NULL child") );
 void wxWindowBase::AddChild(wxWindowBase *child)
 {
     wxCHECK_RET( child, wxT("can't add a NULL child") );


@@ -1002,12 +1287,12 @@ void wxWindowBase::AddChild(wxWindowBase *child)
     // 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
     // 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") );
+    wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );

 
     GetChildren().Append((wxWindow*)child);
     child->SetParent(this);
 
 
     GetChildren().Append((wxWindow*)child);
     child->SetParent(this);
 

-    // adding a child while frozen will assert when thawn, so freeze it as if
+    // adding a child while frozen will assert when thawed, so freeze it as if

     // it had been already present when we were frozen
     if ( IsFrozen() && !child->IsTopLevel() )
         child->Freeze();
     // it had been already present when we were frozen
     if ( IsFrozen() && !child->IsTopLevel() )
         child->Freeze();


@@ -1019,13 +1304,30 @@ void wxWindowBase::RemoveChild(wxWindowBase *child)
 
     // removing a child while frozen may result in permanently frozen window
     // if used e.g. from Reparent(), so thaw it
 
     // removing a child while frozen may result in permanently frozen window
     // if used e.g. from Reparent(), so thaw it

-    if ( IsFrozen() && !child->IsTopLevel() )
+    //
+    // NB: IsTopLevel() doesn't return true any more when a TLW child is being
+    //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
+    if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )

         child->Thaw();
 
     GetChildren().DeleteObject((wxWindow *)child);
     child->SetParent(NULL);
 }
 
         child->Thaw();
 
     GetChildren().DeleteObject((wxWindow *)child);
     child->SetParent(NULL);
 }
 

+void wxWindowBase::SetParent(wxWindowBase *parent)
+{
+    // This assert catches typos which may result in using "this" instead of
+    // "parent" when creating the window. This doesn't happen often but when it
+    // does the results are unpleasant because the program typically just
+    // crashes when due to a stack overflow or something similar and this
+    // assert doesn't cost much (OTOH doing a more general check that the
+    // parent is not one of our children would be more expensive and probably
+    // not worth it).
+    wxASSERT_MSG( parent != this, wxS("Can't use window as its own parent") );
+
+    m_parent = (wxWindow *)parent;
+}
+

 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 {
     wxWindow *oldParent = GetParent();
 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 {
     wxWindow *oldParent = GetParent();


@@ -1072,83 +1374,138 @@ bool wxWindowBase::Reparent(wxWindowBase *newParent)
 // event handler stuff
 // ----------------------------------------------------------------------------
 
 // event handler stuff
 // ----------------------------------------------------------------------------
 

-void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
+void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
+{
+    wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
+
+    m_eventHandler = handler;
+}
+
+void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
+{
+    // disable wxEvtHandler chain mechanism for wxWindows:
+    // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
+
+    wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
+}
+void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))

 {
 {

+    // we can't simply wxFAIL here as in SetNextHandler: in fact the last
+    // handler of our stack when is destroyed will be Unlink()ed and thus
+    // will call this function to update the pointer of this window...
+
+    //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
+}
+
+void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
+{
+    wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
+
+    // the new handler is going to be part of the wxWindow stack of event handlers:
+    // it can't be part also of an event handler double-linked chain:
+    wxASSERT_MSG(handlerToPush->IsUnlinked(),
+        "The handler being pushed in the wxWindow stack shouldn't be part of "
+        "a wxEvtHandler chain; call Unlink() on it first");
+

     wxEvtHandler *handlerOld = GetEventHandler();
     wxEvtHandler *handlerOld = GetEventHandler();

+    wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
+
+    // now use wxEvtHandler double-linked list to implement a stack:
+    handlerToPush->SetNextHandler(handlerOld);
+
+    if (handlerOld != this)
+        handlerOld->SetPreviousHandler(handlerToPush);

 
 

-    handler->SetNextHandler(handlerOld);
+    SetEventHandler(handlerToPush);

 
 

-    if ( handlerOld )
-        GetEventHandler()->SetPreviousHandler(handler);
+#if wxDEBUG_LEVEL
+    // final checks of the operations done above:
+    wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
+        "the first handler of the wxWindow stack should "
+        "have no previous handlers set" );
+    wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
+        "the first handler of the wxWindow stack should "
+        "have non-NULL next handler" );

 
 

-    SetEventHandler(handler);
+    wxEvtHandler* pLast = handlerToPush;
+    while ( pLast && pLast != this )
+        pLast = pLast->GetNextHandler();
+    wxASSERT_MSG( pLast->GetNextHandler() == NULL,
+        "the last handler of the wxWindow stack should "
+        "have this window as next handler" );
+#endif // wxDEBUG_LEVEL

 }
 
 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 {
 }
 
 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 {

-    wxEvtHandler *handlerA = GetEventHandler();
-    if ( handlerA )
-    {
-        wxEvtHandler *handlerB = handlerA->GetNextHandler();
-        handlerA->SetNextHandler((wxEvtHandler *)NULL);
+    // we need to pop the wxWindow stack, i.e. we need to remove the first handler

 
 

-        if ( handlerB )
-            handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
-        SetEventHandler(handlerB);
+    wxEvtHandler *firstHandler = GetEventHandler();
+    wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
+    wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
+    wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
+        "the first handler of the wxWindow stack should have no previous handlers set" );

 
 

-        if ( deleteHandler )
-        {
-            delete handlerA;
-            handlerA = (wxEvtHandler *)NULL;
-        }
+    wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
+    wxCHECK_MSG( secondHandler != NULL, NULL,
+        "the first handler of the wxWindow stack should have non-NULL next handler" );
+
+    firstHandler->SetNextHandler(NULL);
+
+    // It is harmless but useless to unset the previous handler of the window
+    // itself as it's always NULL anyhow, so don't do this.
+    if ( secondHandler != this )
+        secondHandler->SetPreviousHandler(NULL);
+
+    // now firstHandler is completely unlinked; set secondHandler as the new window event handler
+    SetEventHandler(secondHandler);
+
+    if ( deleteHandler )
+    {
+        wxDELETE(firstHandler);

     }
 
     }
 

-    return handlerA;
+    return firstHandler;

 }
 
 }
 

-bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
+bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)

 {
 {

-    wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
+    wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
+    wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
+
+    if (handlerToRemove == GetEventHandler())
+    {
+        // removing the first event handler is equivalent to "popping" the stack
+        PopEventHandler(false);
+        return true;
+    }

 
 

-    wxEvtHandler *handlerPrev = NULL,
-                 *handlerCur = GetEventHandler();
-    while ( handlerCur )
+    // NOTE: the wxWindow event handler list is always terminated with "this" handler
+    wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
+    while ( handlerCur != this && handlerCur )

     {
         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 
     {
         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 

-        if ( handlerCur == handler )
+        if ( handlerCur == handlerToRemove )

         {
         {

-            if ( handlerPrev )
-            {
-                handlerPrev->SetNextHandler(handlerNext);
-            }
-            else
-            {
-                SetEventHandler(handlerNext);
-            }
-
-            if ( handlerNext )
-            {
-                handlerNext->SetPreviousHandler ( handlerPrev );
-            }
-
-            handler->SetNextHandler(NULL);
-            handler->SetPreviousHandler(NULL);
+            handlerCur->Unlink();

 
 

+            wxASSERT_MSG( handlerCur != GetEventHandler(),
+                        "the case Remove == Pop should was already handled" );

             return true;
         }
 
             return true;
         }
 

-        handlerPrev = handlerCur;

         handlerCur = handlerNext;
     }
 
         handlerCur = handlerNext;
     }
 

-    wxFAIL_MSG( _T("where has the event handler gone?") );
+    wxFAIL_MSG( wxT("where has the event handler gone?") );

 
     return false;
 }
 
 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
 {
 
     return false;
 }
 
 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
 {

+    // SafelyProcessEvent() will handle exceptions nicely

     return GetEventHandler()->SafelyProcessEvent(event);
 }
 
     return GetEventHandler()->SafelyProcessEvent(event);
 }
 


@@ -1214,17 +1571,17 @@ wxColour wxWindowBase::GetBackgroundColour() const
 {
     if ( !m_backgroundColour.IsOk() )
     {
 {
     if ( !m_backgroundColour.IsOk() )
     {

-        wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
+        wxASSERT_MSG( !m_hasBgCol, wxT("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
 
         // 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
+        // and also to avoid surprising 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)
         // 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() )
+        if ( !colBg.IsOk() )

             colBg = GetClassDefaultAttributes().colBg;
 
         return colBg;
             colBg = GetClassDefaultAttributes().colBg;
 
         return colBg;


@@ -1236,7 +1593,7 @@ wxColour wxWindowBase::GetBackgroundColour() const
 wxColour wxWindowBase::GetForegroundColour() const
 {
     // logic is the same as above
 wxColour wxWindowBase::GetForegroundColour() const
 {
     // logic is the same as above

-    if ( !m_hasFgCol && !m_foregroundColour.Ok() )
+    if ( !m_hasFgCol && !m_foregroundColour.IsOk() )

     {
         wxColour colFg = GetDefaultAttributes().colFg;
 
     {
         wxColour colFg = GetDefaultAttributes().colFg;
 


@@ -1249,18 +1606,49 @@ wxColour wxWindowBase::GetForegroundColour() const
         return m_foregroundColour;
 }
 
         return m_foregroundColour;
 }
 

+bool wxWindowBase::SetBackgroundStyle(wxBackgroundStyle style)
+{
+    // The checks below shouldn't be triggered if we're not really changing the
+    // style.
+    if ( style == m_backgroundStyle )
+        return true;
+
+    // Transparent background style can be only set before creation because of
+    // wxGTK limitation.
+    wxCHECK_MSG( (style != wxBG_STYLE_TRANSPARENT) || !GetHandle(),
+                 false,
+                 "wxBG_STYLE_TRANSPARENT style can only be set before "
+                 "Create()-ing the window." );
+
+    // And once it is set, wxBG_STYLE_TRANSPARENT can't be unset.
+    wxCHECK_MSG( (m_backgroundStyle != wxBG_STYLE_TRANSPARENT) ||
+                 (style == wxBG_STYLE_TRANSPARENT),
+                 false,
+                 "wxBG_STYLE_TRANSPARENT can't be unset once it was set." );
+
+    m_backgroundStyle = style;
+
+    return true;
+}
+
+bool wxWindowBase::IsTransparentBackgroundSupported(wxString *reason) const
+{
+    if ( reason )
+        *reason = _("This platform does not support background transparency.");
+
+    return false;
+}
+

 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 {
     if ( colour == m_backgroundColour )
         return false;
 
     m_hasBgCol = colour.IsOk();
 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;
 
     m_inheritBgCol = m_hasBgCol;
     m_backgroundColour = colour;

-    SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
+    SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.IsOk() );

     return true;
 }
 
     return true;
 }
 


@@ -1272,7 +1660,7 @@ bool wxWindowBase::SetForegroundColour( const wxColour &colour )
     m_hasFgCol = colour.IsOk();
     m_inheritFgCol = m_hasFgCol;
     m_foregroundColour = colour;
     m_hasFgCol = colour.IsOk();
     m_inheritFgCol = m_hasFgCol;
     m_foregroundColour = colour;

-    SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
+    SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.IsOk() );

     return true;
 }
 
     return true;
 }
 


@@ -1296,7 +1684,7 @@ wxFont wxWindowBase::GetFont() const
     // logic is the same as in GetBackgroundColour()
     if ( !m_font.IsOk() )
     {
     // logic is the same as in GetBackgroundColour()
     if ( !m_font.IsOk() )
     {

-        wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
+        wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );

 
         wxFont font = GetDefaultAttributes().font;
         if ( !font.IsOk() )
 
         wxFont font = GetDefaultAttributes().font;
         if ( !font.IsOk() )


@@ -1431,7 +1819,7 @@ wxWindow *wxWindowBase::FindWindow(long id) const
     if ( id == m_windowId )
         return (wxWindow *)this;
 
     if ( id == m_windowId )
         return (wxWindow *)this;
 

-    wxWindowBase *res = (wxWindow *)NULL;
+    wxWindowBase *res = NULL;

     wxWindowList::compatibility_iterator node;
     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
     {
     wxWindowList::compatibility_iterator node;
     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
     {


@@ -1447,7 +1835,7 @@ wxWindow *wxWindowBase::FindWindow(const wxString& name) const
     if ( name == m_windowName )
         return (wxWindow *)this;
 
     if ( name == m_windowName )
         return (wxWindow *)this;
 

-    wxWindowBase *res = (wxWindow *)NULL;
+    wxWindowBase *res = NULL;

     wxWindowList::compatibility_iterator node;
     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
     {
     wxWindowList::compatibility_iterator node;
     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
     {


@@ -1581,6 +1969,7 @@ wxWindowBase::FindWindowById( long id, const wxWindow* parent )
 // dialog oriented functions
 // ----------------------------------------------------------------------------
 
 // dialog oriented functions
 // ----------------------------------------------------------------------------
 

+#if WXWIN_COMPATIBILITY_2_8

 void wxWindowBase::MakeModal(bool modal)
 {
     // Disable all other windows
 void wxWindowBase::MakeModal(bool modal)
 {
     // Disable all other windows


@@ -1597,96 +1986,170 @@ void wxWindowBase::MakeModal(bool modal)
         }
     }
 }
         }
     }
 }

+#endif // WXWIN_COMPATIBILITY_2_8
+
+#if wxUSE_VALIDATORS
+
+namespace
+{
+
+// This class encapsulates possibly recursive iteration on window children done
+// by Validate() and TransferData{To,From}Window() and allows to avoid code
+// duplication in all three functions.
+class ValidationTraverserBase
+{
+public:
+    wxEXPLICIT ValidationTraverserBase(wxWindowBase* win)
+        : m_win(static_cast<wxWindow*>(win))
+    {
+    }
+
+    // Traverse all the direct children calling OnDo() on them and also all
+    // grandchildren if wxWS_EX_VALIDATE_RECURSIVELY is used, calling
+    // OnRecurse() for them.
+    bool DoForAllChildren()
+    {
+        const bool recurse = m_win->HasExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
+
+        wxWindowList& children = m_win->GetChildren();
+        for ( wxWindowList::iterator i = children.begin();
+              i != children.end();
+              ++i )
+        {
+            wxWindow* const child = static_cast<wxWindow*>(*i);
+            wxValidator* const validator = child->GetValidator();
+            if ( validator && !OnDo(validator) )
+            {
+                return false;
+            }
+
+            // Notice that validation should never recurse into top level
+            // children, e.g. some other dialog which might happen to be
+            // currently shown.
+            if ( recurse && !child->IsTopLevel() && !OnRecurse(child) )
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    // Give it a virtual dtor just to suppress gcc warnings about a class with
+    // virtual methods but non-virtual dtor -- even if this is completely safe
+    // here as we never use the objects of this class polymorphically.
+    virtual ~ValidationTraverserBase() { }
+
+protected:
+    // Called for each child, validator is guaranteed to be non-NULL.
+    virtual bool OnDo(wxValidator* validator) = 0;
+
+    // Called for each child if we need to recurse into its children.
+    virtual bool OnRecurse(wxWindow* child) = 0;
+
+
+    // The window whose children we're traversing.
+    wxWindow* const m_win;
+
+    wxDECLARE_NO_COPY_CLASS(ValidationTraverserBase);
+};
+
+} // anonymous namespace
+
+#endif // wxUSE_VALIDATORS

 
 bool wxWindowBase::Validate()
 {
 #if wxUSE_VALIDATORS
 
 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() )
+    class ValidateTraverser : public ValidationTraverserBase

     {
     {

-        wxWindowBase *child = node->GetData();
-        wxValidator *validator = child->GetValidator();
-        if ( validator && !validator->Validate((wxWindow *)this) )
+    public:
+        wxEXPLICIT ValidateTraverser(wxWindowBase* win)
+            : ValidationTraverserBase(win)

         {
         {

-            return false;

         }
 
         }
 

-        if ( recurse && !child->Validate() )
+        virtual bool OnDo(wxValidator* validator)

         {
         {

-            return false;
+            return validator->Validate(m_win);

         }
         }

-    }
-#endif // wxUSE_VALIDATORS

 
 

+        virtual bool OnRecurse(wxWindow* child)
+        {
+            return child->Validate();
+        }
+    };
+
+    return ValidateTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS

     return true;
     return true;

+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS

 }
 
 bool wxWindowBase::TransferDataToWindow()
 {
 #if wxUSE_VALIDATORS
 }
 
 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() )
+    class DataToWindowTraverser : public ValidationTraverserBase

     {
     {

-        wxWindowBase *child = node->GetData();
-        wxValidator *validator = child->GetValidator();
-        if ( validator && !validator->TransferToWindow() )
+    public:
+        wxEXPLICIT DataToWindowTraverser(wxWindowBase* win)
+            : ValidationTraverserBase(win)

         {
         {

-            wxLogWarning(_("Could not transfer data to window"));
-#if wxUSE_LOG
-            wxLog::FlushActive();
-#endif // wxUSE_LOG
-
-            return false;

         }
 
         }
 

-        if ( recurse )
+        virtual bool OnDo(wxValidator* validator)

         {
         {

-            if ( !child->TransferDataToWindow() )
+            if ( !validator->TransferToWindow() )

             {
             {

-                // warning already given
+                wxLogWarning(_("Could not transfer data to window"));
+#if wxUSE_LOG
+                wxLog::FlushActive();
+#endif // wxUSE_LOG
+

                 return false;
             }
                 return false;
             }

+
+            return true;

         }
         }

-    }
-#endif // wxUSE_VALIDATORS

 
 

+        virtual bool OnRecurse(wxWindow* child)
+        {
+            return child->TransferDataToWindow();
+        }
+    };
+
+    return DataToWindowTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS

     return true;
     return true;

+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS

 }
 
 bool wxWindowBase::TransferDataFromWindow()
 {
 #if wxUSE_VALIDATORS
 }
 
 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() )
+    class DataFromWindowTraverser : public ValidationTraverserBase

     {
     {

-        wxWindow *child = node->GetData();
-        wxValidator *validator = child->GetValidator();
-        if ( validator && !validator->TransferFromWindow() )
+    public:
+        DataFromWindowTraverser(wxWindowBase* win)
+            : ValidationTraverserBase(win)

         {
         {

-            // nop warning here because the application is supposed to give
-            // one itself - we don't know here what might have gone wrongly
+        }

 
 

-            return false;
+        virtual bool OnDo(wxValidator* validator)
+        {
+            return validator->TransferFromWindow();

         }
 
         }
 

-        if ( recurse )
+        virtual bool OnRecurse(wxWindow* child)

         {
         {

-            if ( !child->TransferDataFromWindow() )
-            {
-                // warning already given
-                return false;
-            }
+            return child->TransferDataFromWindow();

         }
         }

-    }
-#endif // wxUSE_VALIDATORS
+    };

 
 

+    return DataFromWindowTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS

     return true;
     return true;

+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS

 }
 
 void wxWindowBase::InitDialog()
 }
 
 void wxWindowBase::InitDialog()


@@ -1787,6 +2250,11 @@ void wxWindowBase::OnHelp(wxHelpEvent& event)
 
 #if wxUSE_TOOLTIPS
 
 
 #if wxUSE_TOOLTIPS
 

+wxString wxWindowBase::GetToolTipText() const
+{
+    return m_tooltip ? m_tooltip->GetTip() : wxString();
+}
+

 void wxWindowBase::SetToolTip( const wxString &tip )
 {
     // don't create the new tooltip if we already have one
 void wxWindowBase::SetToolTip( const wxString &tip )
 {
     // don't create the new tooltip if we already have one


@@ -1800,7 +2268,7 @@ void wxWindowBase::SetToolTip( const wxString &tip )
     }
 
     // setting empty tooltip text does not remove the tooltip any more - use
     }
 
     // setting empty tooltip text does not remove the tooltip any more - use

-    // SetToolTip((wxToolTip *)NULL) for this
+    // SetToolTip(NULL) for this

 }
 
 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
 }
 
 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)


@@ -1814,6 +2282,13 @@ void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
     }
 }
 
     }
 }
 

+bool wxWindowBase::CopyToolTip(wxToolTip *tip)
+{
+    SetToolTip(tip ? new wxToolTip(tip->GetTip()) : NULL);
+
+    return tip != NULL;
+}
+

 #endif // wxUSE_TOOLTIPS
 
 // ----------------------------------------------------------------------------
 #endif // wxUSE_TOOLTIPS
 
 // ----------------------------------------------------------------------------


@@ -1858,7 +2333,7 @@ void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
 {
     if ( c )
     {
 {
     if ( c )
     {

-        if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
+        if ( c->left.GetOtherWindow() && (c->left.GetOtherWindow() != this) )

             c->left.GetOtherWindow()->RemoveConstraintReference(this);
         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
             c->top.GetOtherWindow()->RemoveConstraintReference(this);
             c->left.GetOtherWindow()->RemoveConstraintReference(this);
         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
             c->top.GetOtherWindow()->RemoveConstraintReference(this);


@@ -1923,8 +2398,7 @@ void wxWindowBase::DeleteRelatedConstraints()
             node = next;
         }
 
             node = next;
         }
 

-        delete m_constraintsInvolvedIn;
-        m_constraintsInvolvedIn = (wxWindowList *) NULL;
+        wxDELETE(m_constraintsInvolvedIn);

     }
 }
 
     }
 }
 


@@ -1966,7 +2440,7 @@ void wxWindowBase::SetContainingSizer(wxSizer* sizer)
     // 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,
     // 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?") );
+                  wxT("Adding a window to the same sizer twice?") );

 
     m_containingSizer = sizer;
 }
 
     m_containingSizer = sizer;
 }


@@ -2018,6 +2492,14 @@ bool wxWindowBase::Layout()
     return true;
 }
 
     return true;
 }
 

+void wxWindowBase::InternalOnSize(wxSizeEvent& event)
+{
+    if ( GetAutoLayout() )
+        Layout();
+
+    event.Skip();
+}
+

 #if wxUSE_CONSTRAINTS
 
 // first phase of the constraints evaluation: set our own constraints
 #if wxUSE_CONSTRAINTS
 
 // first phase of the constraints evaluation: set our own constraints


@@ -2128,6 +2610,8 @@ void wxWindowBase::SetConstraintSizes(bool recurse)
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr && constr->AreSatisfied() )
     {
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr && constr->AreSatisfied() )
     {

+        ChildrenRepositioningGuard repositionGuard(this);
+

         int x = constr->left.GetValue();
         int y = constr->top.GetValue();
         int w = constr->width.GetValue();
         int x = constr->left.GetValue();
         int y = constr->top.GetValue();
         int w = constr->width.GetValue();


@@ -2136,7 +2620,9 @@ void wxWindowBase::SetConstraintSizes(bool recurse)
         if ( (constr->width.GetRelationship() != wxAsIs ) ||
              (constr->height.GetRelationship() != wxAsIs) )
         {
         if ( (constr->width.GetRelationship() != wxAsIs ) ||
              (constr->height.GetRelationship() != wxAsIs) )
         {

-            SetSize(x, y, w, h);
+            // We really shouldn't set negative sizes for the windows so make
+            // them at least of 1*1 size
+            SetSize(x, y, w > 0 ? w : 1, h > 0 ? h : 1);

         }
         else
         {
         }
         else
         {


@@ -2251,17 +2737,12 @@ void wxWindowBase::GetPositionConstraint(int *x, int *y) const
 
 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
 {
 
 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 )

     {
     {

-        wxWindow *parent = GetParent();
-        if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
-        {
-            wxPoint pt(parent->GetClientAreaOrigin());
-            x += pt.x;
-            y += pt.y;
-        }
+        wxPoint pt(parent->GetClientAreaOrigin());
+        x += pt.x;
+        y += pt.y;

     }
 }
 
     }
 }
 


@@ -2301,32 +2782,101 @@ void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
         Show(event.GetShown());
 }
 
         Show(event.GetShown());
 }
 

+// ----------------------------------------------------------------------------
+// Idle processing
+// ----------------------------------------------------------------------------
+
+// Send idle event to window and all subwindows
+bool wxWindowBase::SendIdleEvents(wxIdleEvent& event)
+{
+    bool needMore = false;
+
+    OnInternalIdle();
+
+    // should we send idle event to this window?
+    if (wxIdleEvent::GetMode() == wxIDLE_PROCESS_ALL ||
+        HasExtraStyle(wxWS_EX_PROCESS_IDLE))
+    {
+        event.SetEventObject(this);
+        HandleWindowEvent(event);
+
+        if (event.MoreRequested())
+            needMore = true;
+    }
+    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+    for (; node; node = node->GetNext())
+    {
+        wxWindow* child = node->GetData();
+        if (child->SendIdleEvents(event))
+            needMore = true;
+    }
+
+    return needMore;
+}
+
+void wxWindowBase::OnInternalIdle()
+{
+    if ( wxUpdateUIEvent::CanUpdate(this) )
+        UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
+}
+

 // ----------------------------------------------------------------------------
 // dialog units translations
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // dialog units translations
 // ----------------------------------------------------------------------------
 

-wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
+// Windows' computes dialog units using average character width over upper-
+// and lower-case ASCII alphabet and not using the average character width
+// metadata stored in the font; see
+// http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
+// It's important that we perform the conversion in identical way, because
+// dialog units natively exist only on Windows and Windows HIG is expressed
+// using them.
+wxSize wxWindowBase::GetDlgUnitBase() const

 {
 {

-    int charWidth = GetCharWidth();
-    int charHeight = GetCharHeight();
+    const wxWindowBase * const parent = wxGetTopLevelParent((wxWindow*)this);
+
+    wxCHECK_MSG( parent, wxDefaultSize, wxS("Must have TLW parent") );
+
+    if ( !parent->m_font.IsOk() )
+    {
+        // Default GUI font is used. This is the most common case, so
+        // cache the results.
+        static wxSize s_defFontSize;
+        if ( s_defFontSize.x == 0 )
+            s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent);
+        return s_defFontSize;
+    }
+    else
+    {
+        // Custom font, we always need to compute the result
+        return wxPrivate::GetAverageASCIILetterSize(*parent);
+    }
+}
+
+wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const
+{
+    const wxSize base = GetDlgUnitBase();
+
+    // NB: wxMulDivInt32() is used, because it correctly rounds the result
+

     wxPoint pt2 = wxDefaultPosition;
     if (pt.x != wxDefaultCoord)
     wxPoint pt2 = wxDefaultPosition;
     if (pt.x != wxDefaultCoord)

-        pt2.x = (int) ((pt.x * 4) / charWidth);
+        pt2.x = wxMulDivInt32(pt.x, 4, base.x);

     if (pt.y != wxDefaultCoord)
     if (pt.y != wxDefaultCoord)

-        pt2.y = (int) ((pt.y * 8) / charHeight);
+        pt2.y = wxMulDivInt32(pt.y, 8, base.y);

 
     return pt2;
 }
 
 
     return pt2;
 }
 

-wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
+wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const

 {
 {

-    int charWidth = GetCharWidth();
-    int charHeight = GetCharHeight();
+    const wxSize base = GetDlgUnitBase();
+

     wxPoint pt2 = wxDefaultPosition;
     if (pt.x != wxDefaultCoord)
     wxPoint pt2 = wxDefaultPosition;
     if (pt.x != wxDefaultCoord)

-        pt2.x = (int) ((pt.x * charWidth) / 4);
+        pt2.x = wxMulDivInt32(pt.x, base.x, 4);

     if (pt.y != wxDefaultCoord)
     if (pt.y != wxDefaultCoord)

-        pt2.y = (int) ((pt.y * charHeight) / 8);
+        pt2.y = wxMulDivInt32(pt.y, base.y, 8);

 
     return pt2;
 }
 
     return pt2;
 }


@@ -2336,7 +2886,7 @@ wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
 // ----------------------------------------------------------------------------
 
 // propagate the colour change event to the subwindows
 // ----------------------------------------------------------------------------
 
 // propagate the colour change event to the subwindows

-void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
+void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))

 {
     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
     while ( node )
 {
     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
     while ( node )


@@ -2346,7 +2896,7 @@ void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
         if ( !win->IsTopLevel() )
         {
             wxSysColourChangedEvent event2;
         if ( !win->IsTopLevel() )
         {
             wxSysColourChangedEvent event2;

-            event.SetEventObject(win);
+            event2.SetEventObject(win);

             win->GetEventHandler()->ProcessEvent(event2);
         }
 
             win->GetEventHandler()->ProcessEvent(event2);
         }
 


@@ -2377,6 +2927,9 @@ bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
 {
     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
 
 {
     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
 

+    wxMenuInvokingWindowSetter
+        setInvokingWin(*menu, static_cast<wxWindow *>(this));
+

     wxCurrentPopupMenu = menu;
     const bool rc = DoPopupMenu(menu, x, y);
     wxCurrentPopupMenu = NULL;
     wxCurrentPopupMenu = menu;
     const bool rc = DoPopupMenu(menu, x, y);
     wxCurrentPopupMenu = NULL;


@@ -2397,19 +2950,40 @@ void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
     gs_popupMenuSelection = event.GetId();
 }
 
     gs_popupMenuSelection = event.GetId();
 }
 

+void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
+{
+    // nothing to do but do not skip it
+}
+

 int
 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
 {
     gs_popupMenuSelection = wxID_NONE;
 
 int
 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
 {
     gs_popupMenuSelection = wxID_NONE;
 

-    Connect(wxEVT_COMMAND_MENU_SELECTED,
+    Connect(wxEVT_MENU,

             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
             NULL,
             this);
 
             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
             NULL,
             this);
 

+    // it is common to construct the menu passed to this function dynamically
+    // using some fixed range of ids which could clash with the ids used
+    // elsewhere in the program, which could result in some menu items being
+    // unintentionally disabled or otherwise modified by update UI handlers
+    // elsewhere in the program code and this is difficult to avoid in the
+    // program itself, so instead we just temporarily suspend UI updating while
+    // this menu is shown
+    Connect(wxEVT_UPDATE_UI,
+            wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
+            NULL,
+            this);
+

     PopupMenu(&menu, x, y);
 
     PopupMenu(&menu, x, y);
 

-    Disconnect(wxEVT_COMMAND_MENU_SELECTED,
+    Disconnect(wxEVT_UPDATE_UI,
+               wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
+               NULL,
+               this);
+    Disconnect(wxEVT_MENU,

                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
                NULL,
                this);
                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
                NULL,
                this);


@@ -2419,16 +2993,20 @@ wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
 
 #endif // wxUSE_MENUS
 
 
 #endif // wxUSE_MENUS
 

-// methods for drawing the sizers in a visible way
-#ifdef __WXDEBUG__
+// methods for drawing the sizers in a visible way: this is currently only
+// enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
+// that well and also because we don't want to leave it enabled in default
+// builds used for production
+#if wxDEBUG_LEVEL > 1

 
 static void DrawSizers(wxWindowBase *win);
 
 
 static void DrawSizers(wxWindowBase *win);
 

-static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
+static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)

 {
     wxClientDC dc((wxWindow *)win);
 {
     wxClientDC dc((wxWindow *)win);

-    dc.SetPen(*wxRED_PEN);
-    dc.SetBrush(fill ? wxBrush(*wxRED, wxBRUSHSTYLE_CROSSDIAG_HATCH) : *wxTRANSPARENT_BRUSH);
+    dc.SetPen(*pen);
+    dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
+                       *wxTRANSPARENT_BRUSH);

     dc.DrawRectangle(rect.Deflate(1, 1));
 }
 
     dc.DrawRectangle(rect.Deflate(1, 1));
 }
 


@@ -2443,26 +3021,29 @@ static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
         wxSizerItem *item = *i;
         if ( item->IsSizer() )
         {
         wxSizerItem *item = *i;
         if ( item->IsSizer() )
         {

-            DrawBorder(win, item->GetRect().Deflate(2));
+            DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);

             DrawSizer(win, item->GetSizer());
         }
         else if ( item->IsSpacer() )
         {
             DrawSizer(win, item->GetSizer());
         }
         else if ( item->IsSpacer() )
         {

-            DrawBorder(win, item->GetRect().Deflate(2), true);
+            DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);

         }
         else if ( item->IsWindow() )
         {
             DrawSizers(item->GetWindow());
         }
         }
         else if ( item->IsWindow() )
         {
             DrawSizers(item->GetWindow());
         }

+        else
+            wxFAIL_MSG("inconsistent wxSizerItem status!");

     }
 }
 
 static void DrawSizers(wxWindowBase *win)
 {
     }
 }
 
 static void DrawSizers(wxWindowBase *win)
 {

+    DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
+

     wxSizer *sizer = win->GetSizer();
     if ( sizer )
     {
     wxSizer *sizer = win->GetSizer();
     if ( sizer )
     {

-        DrawBorder(win, win->GetClientSize());

         DrawSizer(win, sizer);
     }
     else // no sizer, still recurse into the children
         DrawSizer(win, sizer);
     }
     else // no sizer, still recurse into the children


@@ -2475,25 +3056,50 @@ static void DrawSizers(wxWindowBase *win)
         {
             DrawSizers(*i);
         }
         {
             DrawSizers(*i);
         }

+
+        // show all kind of sizes of this window; see the "window sizing" topic
+        // overview for more info about the various differences:
+        wxSize fullSz = win->GetSize();
+        wxSize clientSz = win->GetClientSize();
+        wxSize bestSz = win->GetBestSize();
+        wxSize minSz = win->GetMinSize();
+        wxSize maxSz = win->GetMaxSize();
+        wxSize virtualSz = win->GetVirtualSize();
+
+        wxMessageOutputDebug dbgout;
+        dbgout.Printf(
+            "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
+            win->GetName(),
+            fullSz.x, fullSz.y,
+            clientSz.x, clientSz.y,
+            bestSz.x, bestSz.y,
+            minSz.x, minSz.y,
+            maxSz.x, maxSz.y,
+            virtualSz.x, virtualSz.y);

     }
 }
 
     }
 }
 

-#endif // __WXDEBUG__
+#endif // wxDEBUG_LEVEL

 
 // process special middle clicks
 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 {
     if ( event.ControlDown() && event.AltDown() )
     {
 
 // process special middle clicks
 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 {
     if ( event.ControlDown() && event.AltDown() )
     {

-#ifdef __WXDEBUG__
+#if wxDEBUG_LEVEL > 1

         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
         if ( event.ShiftDown() )
         {
             DrawSizers(this);
         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
         if ( event.ShiftDown() )
         {
             DrawSizers(this);

-            return;

         }
         }

+        else

 #endif // __WXDEBUG__
 #endif // __WXDEBUG__

-        ::wxInfoMessageBox((wxWindow*)this);
+        {
+#if wxUSE_MSGDLG
+            // just Ctrl-Alt-middle click shows information about wx version
+            ::wxInfoMessageBox((wxWindow*)this);
+#endif // wxUSE_MSGDLG
+        }

     }
     else
     {
     }
     else
     {


@@ -2535,19 +3141,19 @@ wxAccessible* wxWindowBase::CreateAccessible()
 // list classes implementation
 // ----------------------------------------------------------------------------
 
 // list classes implementation
 // ----------------------------------------------------------------------------
 

-#if wxUSE_STL
+#if wxUSE_STD_CONTAINERS

 
 #include "wx/listimpl.cpp"
 WX_DEFINE_LIST(wxWindowList)
 
 
 #include "wx/listimpl.cpp"
 WX_DEFINE_LIST(wxWindowList)
 

-#else // !wxUSE_STL
+#else // !wxUSE_STD_CONTAINERS

 
 void wxWindowListNode::DeleteData()
 {
     delete (wxWindow *)GetData();
 }
 
 
 void wxWindowListNode::DeleteData()
 {
     delete (wxWindow *)GetData();
 }
 

-#endif // wxUSE_STL/!wxUSE_STL
+#endif // wxUSE_STD_CONTAINERS/!wxUSE_STD_CONTAINERS

 
 // ----------------------------------------------------------------------------
 // borders
 
 // ----------------------------------------------------------------------------
 // borders


@@ -2607,9 +3213,9 @@ bool wxWindowBase::ms_winCaptureChanging = false;
 
 void wxWindowBase::CaptureMouse()
 {
 
 void wxWindowBase::CaptureMouse()
 {

-    wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
+    wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));

 
 

-    wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
+    wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );

 
     ms_winCaptureChanging = true;
 
 
     ms_winCaptureChanging = true;
 


@@ -2634,11 +3240,14 @@ void wxWindowBase::CaptureMouse()
 
 void wxWindowBase::ReleaseMouse()
 {
 
 void wxWindowBase::ReleaseMouse()
 {

-    wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
+    wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));

 
 

-    wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
+    wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );

 
 

-    wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
+    wxASSERT_MSG( GetCapture() == this,
+                  "attempt to release mouse, but this window hasn't captured it" );
+    wxASSERT_MSG( ms_winCaptureCurrent == this,
+                  "attempt to release mouse, but this window hasn't captured it" );

 
     ms_winCaptureChanging = true;
 
 
     ms_winCaptureChanging = true;
 


@@ -2658,9 +3267,9 @@ void wxWindowBase::ReleaseMouse()
 
     ms_winCaptureChanging = false;
 
 
     ms_winCaptureChanging = false;
 

-    wxLogTrace(_T("mousecapture"),
-        (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
-        wx_static_cast(void*, GetCapture()));
+    wxLogTrace(wxT("mousecapture"),
+        (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
+        static_cast<void*>(GetCapture()));

 }
 
 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
 }
 
 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)


@@ -2673,7 +3282,7 @@ static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
         // 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
         // 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") );
+        wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );

     }
 }
 
     }
 }
 


@@ -2728,25 +3337,25 @@ bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
 // event processing
 // ----------------------------------------------------------------------------
 
 // event processing
 // ----------------------------------------------------------------------------
 

-bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
+bool wxWindowBase::TryBefore(wxEvent& event)

 {
 #if wxUSE_VALIDATORS
     // Can only use the validator of the window which
     // is receiving the event
     if ( event.GetEventObject() == this )
     {
 {
 #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) )
+        wxValidator * const validator = GetValidator();
+        if ( validator && validator->ProcessEventLocally(event) )

         {
             return true;
         }
     }
 #endif // wxUSE_VALIDATORS
 
         {
             return true;
         }
     }
 #endif // wxUSE_VALIDATORS
 

-    return false;
+    return wxEvtHandler::TryBefore(event);

 }
 
 }
 

-bool wxWindowBase::TryParent(wxEvent& event)
+bool wxWindowBase::TryAfter(wxEvent& event)

 {
     // carry on up the parent-child hierarchy if the propagation count hasn't
     // reached zero yet
 {
     // carry on up the parent-child hierarchy if the propagation count hasn't
     // reached zero yet


@@ -2768,7 +3377,7 @@ bool wxWindowBase::TryParent(wxEvent& event)
         }
     }
 
         }
     }
 

-    return wxEvtHandler::TryParent(event);
+    return wxEvtHandler::TryAfter(event);

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -2778,11 +3387,11 @@ bool wxWindowBase::TryParent(wxEvent& event)
 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
 {
     wxCHECK_MSG( GetParent(), NULL,
 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
 {
     wxCHECK_MSG( GetParent(), NULL,

-                    _T("GetPrev/NextSibling() don't work for TLWs!") );
+                    wxT("GetPrev/NextSibling() don't work for TLWs!") );

 
     wxWindowList& siblings = GetParent()->GetChildren();
     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
 
     wxWindowList& siblings = GetParent()->GetChildren();
     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);

-    wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
+    wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );

 
     if ( order == OrderBefore )
         i = i->GetPrevious();
 
     if ( order == OrderBefore )
         i = i->GetPrevious();


@@ -2836,7 +3445,7 @@ void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
 {
     // check that we're not a top level window
     wxCHECK_RET( GetParent(),
 {
     // check that we're not a top level window
     wxCHECK_RET( GetParent(),

-                    _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
+                    wxT("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
 
     // detect the special case when we have nothing to do anyhow and when the
     // code below wouldn't work


@@ -2846,10 +3455,10 @@ void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
     // find the target window in the siblings list
     wxWindowList& siblings = GetParent()->GetChildren();
     wxWindowList::compatibility_iterator i = siblings.Find(win);
     // 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") );
+    wxCHECK_RET( i, wxT("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
+    // unfortunately, when wxUSE_STD_CONTAINERS == 1 DetachNode() is not
+    // implemented so we can't just move the node around

     wxWindow *self = (wxWindow *)this;
     siblings.DeleteObject(self);
     if ( move == OrderAfter )
     wxWindow *self = (wxWindow *)this;
     siblings.DeleteObject(self);
     if ( move == OrderAfter )


@@ -2879,11 +3488,66 @@ void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
 
 bool wxWindowBase::HasFocus() const
 {
 
 bool wxWindowBase::HasFocus() const
 {

-    wxWindowBase *win = DoFindFocus();
-    return win == this ||
-           win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
+    wxWindowBase* const win = DoFindFocus();
+    return win &&
+            (this == win || this == win->GetMainWindowOfCompositeControl());
+}
+
+// ----------------------------------------------------------------------------
+// drag and drop
+// ----------------------------------------------------------------------------
+
+#if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
+
+namespace
+{
+
+class DragAcceptFilesTarget : public wxFileDropTarget
+{
+public:
+    DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
+
+    virtual bool OnDropFiles(wxCoord x, wxCoord y,
+                             const wxArrayString& filenames)
+    {
+        wxDropFilesEvent event(wxEVT_DROP_FILES,
+                               filenames.size(),
+                               wxCArrayString(filenames).Release());
+        event.SetEventObject(m_win);
+        event.m_pos.x = x;
+        event.m_pos.y = y;
+
+        return m_win->HandleWindowEvent(event);
+    }
+
+private:
+    wxWindowBase * const m_win;
+
+    wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
+};
+
+
+} // anonymous namespace
+
+// Generic version of DragAcceptFiles(). It works by installing a simple
+// wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
+// together with explicit SetDropTarget() calls.
+void wxWindowBase::DragAcceptFiles(bool accept)
+{
+    if ( accept )
+    {
+        wxASSERT_MSG( !GetDropTarget(),
+                      "cannot use DragAcceptFiles() and SetDropTarget() together" );
+        SetDropTarget(new DragAcceptFilesTarget(this));
+    }
+    else
+    {
+        SetDropTarget(NULL);
+    }

 }
 
 }
 

+#endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
+

 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------


@@ -2936,7 +3600,7 @@ wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
     if (win)
     {
         rect = win->GetRect();
     if (win)
     {
         rect = win->GetRect();

-        if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
+        if (win->GetParent() && !wxDynamicCast(win, wxTopLevelWindow))

             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
         return wxACC_OK;
     }
             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
         return wxACC_OK;
     }


@@ -3055,7 +3719,7 @@ wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
     // accessible classes, one for each kind of wxWidgets
     // control or window.
 #if wxUSE_BUTTON
     // accessible classes, one for each kind of wxWidgets
     // control or window.
 #if wxUSE_BUTTON

-    if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
+    if (wxDynamicCast(GetWindow(), wxButton))

         title = ((wxButton*) GetWindow())->GetLabel();
     else
 #endif
         title = ((wxButton*) GetWindow())->GetLabel();
     else
 #endif


@@ -3214,14 +3878,14 @@ wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
     if (childId > 0)
         return wxACC_NOT_IMPLEMENTED;
 
     if (childId > 0)
         return wxACC_NOT_IMPLEMENTED;
 

-    if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
+    if (wxDynamicCast(GetWindow(), wxControl))

         return wxACC_NOT_IMPLEMENTED;
 #if wxUSE_STATUSBAR
         return wxACC_NOT_IMPLEMENTED;
 #if wxUSE_STATUSBAR

-    if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
+    if (wxDynamicCast(GetWindow(), wxStatusBar))

         return wxACC_NOT_IMPLEMENTED;
 #endif
 #if wxUSE_TOOLBAR
         return wxACC_NOT_IMPLEMENTED;
 #endif
 #if wxUSE_TOOLBAR

-    if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
+    if (wxDynamicCast(GetWindow(), wxToolBar))

         return wxACC_NOT_IMPLEMENTED;
 #endif
 
         return wxACC_NOT_IMPLEMENTED;
 #endif
 


@@ -3246,15 +3910,15 @@ wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
     if (childId > 0)
         return wxACC_NOT_IMPLEMENTED;
 
     if (childId > 0)
         return wxACC_NOT_IMPLEMENTED;
 

-    if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
+    if (wxDynamicCast(GetWindow(), wxControl))

         return wxACC_NOT_IMPLEMENTED;
 
 #if wxUSE_STATUSBAR
         return wxACC_NOT_IMPLEMENTED;
 
 #if wxUSE_STATUSBAR

-    if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
+    if (wxDynamicCast(GetWindow(), wxStatusBar))

         return wxACC_NOT_IMPLEMENTED;
 #endif
 #if wxUSE_TOOLBAR
         return wxACC_NOT_IMPLEMENTED;
 #endif
 #if wxUSE_TOOLBAR

-    if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
+    if (wxDynamicCast(GetWindow(), wxToolBar))

         return wxACC_NOT_IMPLEMENTED;
 #endif
 
         return wxACC_NOT_IMPLEMENTED;
 #endif