Make wxWindow::HasScrollbar() respect wxScrolled::ShowScrollbars().

[wxWidgets.git] / src / gtk / mdi.cpp

diff --git a/src/gtk/mdi.cpp b/src/gtk/mdi.cpp
index a15c6a7500107559a72ad13e928db6aa74c8bd37..3454d4f90bb196d53ac57bb065fb64f8e9b96c00 100644 (file)
--- a/src/gtk/mdi.cpp
+++ b/src/gtk/mdi.cpp
@@ -2,7 +2,6 @@
 // Name:        src/gtk/mdi.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Name:        src/gtk/mdi.cpp
 // Purpose:
 // Author:      Robert Roebling

-// Id:          $Id$

 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////


@@ -10,32 +9,16 @@
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

-#include "wx/mdi.h"
-#include "wx/notebook.h"
-

 #if wxUSE_MDI
 
 #if wxUSE_MDI
 

-#include "wx/dialog.h"
-#include "wx/menu.h"
-#include "wx/intl.h"
-#include "wx/gtk/private.h"
-
-#include <glib.h>
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
-#include "wx/gtk/win_gtk.h"
-
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
-
-const int wxMENU_HEIGHT = 27;
+#include "wx/mdi.h"

 
 

-//-----------------------------------------------------------------------------
-// globals
-//-----------------------------------------------------------------------------
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/menu.h"
+#endif

 
 

-extern wxList wxPendingDelete;
+#include "wx/gtk/private.h"

 
 //-----------------------------------------------------------------------------
 // "switch_page"
 
 //-----------------------------------------------------------------------------
 // "switch_page"


@@ -43,14 +26,8 @@ extern wxList wxPendingDelete;
 
 extern "C" {
 static void
 
 extern "C" {
 static void

-gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
-                              GtkNotebookPage *page,
-                              gint WXUNUSED(page_num),
-                              wxMDIParentFrame *parent )
+switch_page(GtkNotebook* widget, GtkNotebookPage*, guint page_num, wxMDIParentFrame* parent)

 {
 {

-    if (g_isIdle)
-        wxapp_install_idle_handler();
-

     // send deactivate event to old child
 
     wxMDIChildFrame *child = parent->GetActiveChild();
     // send deactivate event to old child
 
     wxMDIChildFrame *child = parent->GetActiveChild();


@@ -58,16 +35,17 @@ gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
     {
         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
         event1.SetEventObject( child);
     {
         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
         event1.SetEventObject( child);

-        child->GetEventHandler()->ProcessEvent( event1 );
+        child->HandleWindowEvent( event1 );

     }
 
     // send activate event to new child
 
     }
 
     // send activate event to new child
 

-    wxMDIClientWindow *client_window = parent->GetClientWindow();
-    if (!client_window)
+    wxMDIClientWindowBase *client_window = parent->GetClientWindow();
+    if ( !client_window )

         return;
 
         return;
 

-    child = (wxMDIChildFrame*) NULL;
+    child = NULL;
+    GtkWidget* page = gtk_notebook_get_nth_page(widget, page_num);

 
     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
     while ( node )
 
     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
     while ( node )


@@ -77,7 +55,7 @@ gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
         // child_frame can be NULL when this is called from dtor, probably
         // because g_signal_connect (m_widget, "switch_page", (see below)
         // isn't deleted early enough
         // child_frame can be NULL when this is called from dtor, probably
         // because g_signal_connect (m_widget, "switch_page", (see below)
         // isn't deleted early enough

-        if ( child_frame && child_frame->m_page == page )
+        if (child_frame && child_frame->m_widget == page)

         {
             child = child_frame;
             break;
         {
             child = child_frame;
             break;


@@ -90,7 +68,7 @@ gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
 
     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
     event2.SetEventObject( child);
 
     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
     event2.SetEventObject( child);

-    child->GetEventHandler()->ProcessEvent( event2 );
+    child->HandleWindowEvent( event2 );

 }
 }
 
 }
 }
 


@@ -103,11 +81,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 void wxMDIParentFrame::Init()
 {
     m_justInserted = false;
 void wxMDIParentFrame::Init()
 {
     m_justInserted = false;

-    m_clientWindow = (wxMDIClientWindow *) NULL;
-}
-
-wxMDIParentFrame::~wxMDIParentFrame()
-{

 }
 
 bool wxMDIParentFrame::Create(wxWindow *parent,
 }
 
 bool wxMDIParentFrame::Create(wxWindow *parent,


@@ -118,36 +91,19 @@ bool wxMDIParentFrame::Create(wxWindow *parent,
                               long style,
                               const wxString& name )
 {
                               long style,
                               const wxString& name )
 {

-    wxFrame::Create( parent, id, title, pos, size, style, name );
+    if ( !wxFrame::Create( parent, id, title, pos, size, style, name ) )
+        return false;

 
 

-    OnCreateClient();
+    m_clientWindow = OnCreateClient();
+    if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
+        return false;

 
     return true;
 }
 
 
     return true;
 }
 

-void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
-{
-    wxFrame::GtkOnSize( x, y, width, height );
-
-    wxMDIChildFrame *child_frame = GetActiveChild();
-    if (!child_frame) return;
-
-    wxMenuBar *menu_bar = child_frame->m_menuBar;
-    if (!menu_bar) return;
-    if (!menu_bar->m_widget) return;
-
-    menu_bar->m_x = 0;
-    menu_bar->m_y = 0;
-    menu_bar->m_width = m_width;
-    menu_bar->m_height = wxMENU_HEIGHT;
-    gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
-                          menu_bar->m_widget,
-                          0, 0, m_width, wxMENU_HEIGHT );
-}
-

 void wxMDIParentFrame::OnInternalIdle()
 {
 void wxMDIParentFrame::OnInternalIdle()
 {

-    /* if a an MDI child window has just been inserted
+    /* if a MDI child window has just been inserted

        it has to be brought to the top in idle time. we
        simply set the last notebook page active as new
        pages can only be appended at the end */
        it has to be brought to the top in idle time. we
        simply set the last notebook page active as new
        pages can only be appended at the end */


@@ -155,7 +111,7 @@ void wxMDIParentFrame::OnInternalIdle()
     if (m_justInserted)
     {
         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
     if (m_justInserted)
     {
         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);

-        gtk_notebook_set_current_page( notebook, g_list_length( notebook->children ) - 1 );
+        gtk_notebook_set_current_page(notebook, -1);

 
         /* need to set the menubar of the child */
         wxMDIChildFrame *active_child_frame = GetActiveChild();
 
         /* need to set the menubar of the child */
         wxMDIChildFrame *active_child_frame = GetActiveChild();


@@ -164,12 +120,7 @@ void wxMDIParentFrame::OnInternalIdle()
             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
             if (menu_bar)
             {
             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
             if (menu_bar)
             {

-                menu_bar->m_width = m_width;
-                menu_bar->m_height = wxMENU_HEIGHT;
-                gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
-                                    menu_bar->m_widget,
-                                    0, 0, m_width, wxMENU_HEIGHT );
-                menu_bar->SetInvokingWindow(active_child_frame);
+                menu_bar->Attach(active_child_frame);

             }
         }
         m_justInserted = false;
             }
         }
         m_justInserted = false;


@@ -195,12 +146,13 @@ void wxMDIParentFrame::OnInternalIdle()
                 {
                     if (menu_bar->Show(true))
                     {
                 {
                     if (menu_bar->Show(true))
                     {

-                        menu_bar->m_width = m_width;
-                        menu_bar->m_height = wxMENU_HEIGHT;
-                        gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
-                                            menu_bar->m_widget,
-                                            0, 0, m_width, wxMENU_HEIGHT );
-                        menu_bar->SetInvokingWindow( child_frame );
+                        // Attach() asserts if we call it for an already
+                        // attached menu bar so don't do it if we're already
+                        // associated with this frame (it would be nice to get
+                        // rid of this check and ensure that this doesn't
+                        // happen...)
+                        if ( menu_bar->GetFrame() != child_frame )
+                            menu_bar->Attach( child_frame );

                     }
                     visible_child_menu = true;
                 }
                     }
                     visible_child_menu = true;
                 }


@@ -208,7 +160,7 @@ void wxMDIParentFrame::OnInternalIdle()
                 {
                     if (menu_bar->Show(false))
                     {
                 {
                     if (menu_bar->Show(false))
                     {

-                        menu_bar->UnsetInvokingWindow( child_frame );
+                        menu_bar->Detach();

                     }
                 }
             }
                     }
                 }
             }


@@ -224,64 +176,68 @@ void wxMDIParentFrame::OnInternalIdle()
         if (visible_child_menu)
         {
             m_frameMenuBar->Show( false );
         if (visible_child_menu)
         {
             m_frameMenuBar->Show( false );

-            m_frameMenuBar->UnsetInvokingWindow( this );
+            m_frameMenuBar->Detach();

         }
         else
         {
             m_frameMenuBar->Show( true );
         }
         else
         {
             m_frameMenuBar->Show( true );

-            m_frameMenuBar->SetInvokingWindow( this );
-
-            m_frameMenuBar->m_width = m_width;
-            m_frameMenuBar->m_height = wxMENU_HEIGHT;
-            gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
-                                m_frameMenuBar->m_widget,
-                                0, 0, m_width, wxMENU_HEIGHT );
+            m_frameMenuBar->Attach( this );

         }
     }
 }
 
         }
     }
 }
 

-void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
+void wxMDIParentFrame::DoGetClientSize(int* width, int* height) const

 {
 {

-    wxFrame::DoGetClientSize( width, height );
+    wxFrame::DoGetClientSize(width, height);
+
+    if (!m_useCachedClientSize && height)
+    {
+        wxMDIChildFrame* active_child_frame = GetActiveChild();
+        if (active_child_frame)
+        {
+            wxMenuBar* menubar = active_child_frame->m_menuBar;
+            if (menubar && menubar->IsShown())
+            {
+                GtkRequisition req;
+                gtk_widget_get_preferred_height(menubar->m_widget, NULL, &req.height);
+                *height -= req.height;
+                if (*height < 0) *height = 0;
+            }
+        }
+    }

 }
 
 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 {
 }
 
 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 {

-    if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
+    if (!m_clientWindow) return NULL;

 
     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 
     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);

-    if (!notebook) return (wxMDIChildFrame*) NULL;
+    if (!notebook) return NULL;

 
     gint i = gtk_notebook_get_current_page( notebook );
 
     gint i = gtk_notebook_get_current_page( notebook );

-    if (i < 0) return (wxMDIChildFrame*) NULL;
+    if (i < 0) return NULL;

 
 

-    GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
-    if (!page) return (wxMDIChildFrame*) NULL;
+    GtkWidget* page = gtk_notebook_get_nth_page(notebook, i);
+    if (!page) return NULL;

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

+        if ( wxPendingDelete.Member(node->GetData()) )
+            return NULL;
+

         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 
         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 

-        wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
+        if (!child_frame)
+            return NULL;

 
 

-        if (child_frame->m_page == page)
+        if (child_frame->m_widget == page)

             return child_frame;
             return child_frame;

+

         node = node->GetNext();
     }
 
         node = node->GetNext();
     }
 

-    return (wxMDIChildFrame*) NULL;
-}
-
-wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
-{
-    return m_clientWindow;
-}
-
-wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
-{
-    m_clientWindow = new wxMDIClientWindow( this );
-    return m_clientWindow;
+    return NULL;

 }
 
 void wxMDIParentFrame::ActivateNext()
 }
 
 void wxMDIParentFrame::ActivateNext()


@@ -307,61 +263,45 @@ BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 END_EVENT_TABLE()
 
     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 END_EVENT_TABLE()
 

-wxMDIChildFrame::wxMDIChildFrame()
+void wxMDIChildFrame::Init()

 {
 {

-    m_menuBar = (wxMenuBar *) NULL;
-    m_page = (GtkNotebookPage *) NULL;
+    m_menuBar = NULL;

 }
 
 }
 

-wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
-      wxWindowID id, const wxString& title,
-      const wxPoint& WXUNUSED(pos), const wxSize& size,
-      long style, const wxString& name )
-{
-    m_menuBar = (wxMenuBar *) NULL;
-    m_page = (GtkNotebookPage *) NULL;
-    Create( parent, id, title, wxDefaultPosition, size, style, name );
-}
-
-wxMDIChildFrame::~wxMDIChildFrame()
-{
-    if (m_menuBar)
-        delete m_menuBar;
-}
-
-bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
-      wxWindowID id, const wxString& title,
-      const wxPoint& WXUNUSED(pos), const wxSize& size,
-      long style, const wxString& name )
+bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
+                             wxWindowID id,
+                             const wxString& title,
+                             const wxPoint& WXUNUSED(pos),
+                             const wxSize& size,
+                             long style,
+                             const wxString& name)

 {
 {

+    m_mdiParent = parent;

     m_title = title;
 
     m_title = title;
 

-    return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
+    return wxWindow::Create(parent->GetClientWindow(), id,
+                            wxDefaultPosition, size,
+                            style, name);

 }
 
 }
 

-void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
-{
-    wxWindow::DoSetSize( x, y, width, height, sizeFlags );
-}
-
-void wxMDIChildFrame::DoSetClientSize(int width, int height)
+wxMDIChildFrame::~wxMDIChildFrame()

 {
 {

-    wxWindow::DoSetClientSize( width, height );
-}
+    delete m_menuBar;

 
 

-void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
-{
-    wxWindow::DoGetClientSize( width, height );
+    // wxMDIClientWindow does not get redrawn properly after last child is removed
+    if (m_parent && m_parent->GetChildren().size() <= 1)
+        gtk_widget_queue_draw(m_parent->m_widget);

 }
 
 }
 

-void wxMDIChildFrame::AddChild( wxWindowBase *child )
+void wxMDIChildFrame::GTKHandleRealized()

 {
 {

-    wxWindow::AddChild(child);
+    // since m_widget is not a GtkWindow, must bypass wxTopLevelWindowGTK
+    wxTopLevelWindowBase::GTKHandleRealized();

 }
 
 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 {
 }
 
 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 {

-    wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
+    wxASSERT_MSG( m_menuBar == NULL, "Only one menubar allowed" );

 
     m_menuBar = menu_bar;
 
 
     m_menuBar = menu_bar;
 


@@ -372,9 +312,10 @@ void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
         m_menuBar->SetParent( mdi_frame );
 
         /* insert the invisible menu bar into the _parent_ mdi frame */
         m_menuBar->SetParent( mdi_frame );
 
         /* insert the invisible menu bar into the _parent_ mdi frame */

-        gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
-                         m_menuBar->m_widget,
-                         0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
+        m_menuBar->Show(false);
+        gtk_box_pack_start(GTK_BOX(mdi_frame->m_mainWidget), m_menuBar->m_widget, false, false, 0);
+        gtk_box_reorder_child(GTK_BOX(mdi_frame->m_mainWidget), m_menuBar->m_widget, 0);
+        gtk_widget_set_size_request(m_menuBar->m_widget, -1, -1);

     }
 }
 
     }
 }
 


@@ -383,10 +324,20 @@ wxMenuBar *wxMDIChildFrame::GetMenuBar() const
     return m_menuBar;
 }
 
     return m_menuBar;
 }
 

+GtkNotebook *wxMDIChildFrame::GTKGetNotebook() const
+{
+    wxMDIClientWindow * const
+        client = wxStaticCast(GetParent(), wxMDIClientWindow);
+    wxCHECK( client, NULL );
+
+    return GTK_NOTEBOOK(client->m_widget);
+}
+

 void wxMDIChildFrame::Activate()
 {
 void wxMDIChildFrame::Activate()
 {

-    wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
-    GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
+    GtkNotebook * const notebook = GTKGetNotebook();
+    wxCHECK_RET( notebook, "no parent notebook?" );
+

     gint pageno = gtk_notebook_page_num( notebook, m_widget );
     gtk_notebook_set_current_page( notebook, pageno );
 }
     gint pageno = gtk_notebook_page_num( notebook, m_widget );
     gtk_notebook_set_current_page( notebook, pageno );
 }


@@ -399,7 +350,7 @@ void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 {
 #if wxUSE_STATUSBAR
     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 {
 #if wxUSE_STATUSBAR
     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();

-    if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
+    if ( !ShowMenuHelp(event.GetMenuId()) )

     {
         // we don't have any help text for this item, but may be the MDI frame
         // does?
     {
         // we don't have any help text for this item, but may be the MDI frame
         // does?


@@ -415,95 +366,42 @@ void wxMDIChildFrame::SetTitle( const wxString &title )
 
     m_title = title;
 
 
     m_title = title;
 

-    wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
-    GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
+    GtkNotebook * const notebook = GTKGetNotebook();
+    wxCHECK_RET( notebook, "no parent notebook?" );

     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 }
 
     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 }
 

-//-----------------------------------------------------------------------------
-// "size_allocate"
-//-----------------------------------------------------------------------------
-
-extern "C" {
-static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
-
-    if ((win->m_x == alloc->x) &&
-        (win->m_y == alloc->y) &&
-        (win->m_width == alloc->width) &&
-        (win->m_height == alloc->height) &&
-        (win->m_sizeSet))
-    {
-        return;
-    }
-
-    win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
-}
-}
-
-//-----------------------------------------------------------------------------
-// InsertChild callback for wxMDIClientWindow
-//-----------------------------------------------------------------------------
-
-static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
-{
-    wxString s = child->GetTitle();
-    if (s.IsNull()) s = _("MDI child");
-
-    GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
-    gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
-
-    g_signal_connect (child->m_widget, "size_allocate",
-                      G_CALLBACK (gtk_page_size_callback), child);
-
-    GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
-
-    gtk_notebook_append_page( notebook, child->m_widget, label_widget );
-
-    child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
-
-    wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
-    parent_frame->m_justInserted = true;
-}
-

 //-----------------------------------------------------------------------------
 // wxMDIClientWindow
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxMDIClientWindow
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
-
-wxMDIClientWindow::wxMDIClientWindow()
-{
-}
-
-wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
-{
-    CreateClient( parent, style );
-}
+IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)

 
 wxMDIClientWindow::~wxMDIClientWindow()
 {
 
 wxMDIClientWindow::~wxMDIClientWindow()
 {

-
+    // disconnect our handler because our ~wxWindow (which is going to be called
+    // after this dtor) will call DestroyChildren(); in turns our children
+    // ~wxWindow dtors will call wxWindow::Show(false) and this will generate
+    // a call to gtk_mdi_page_change_callback with an invalid parent
+    // (because gtk_mdi_page_change_callback expects a wxMDIClientWindow but
+    //  at that point of the dtor chain we are a simple wxWindow!)
+    g_signal_handlers_disconnect_by_func(m_widget, (void*)switch_page, GetParent());

 }
 
 }
 

-bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
+bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)

 {
 {

-    m_needParent = true;
-
-    m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
-
-    if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
-        !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
+    if ( !PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
+         !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
+                       style, wxDefaultValidator, "wxMDIClientWindow" ))

     {
     {

-        wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
+        wxFAIL_MSG( "wxMDIClientWindow creation failed" );

         return false;
     }
 
     m_widget = gtk_notebook_new();
         return false;
     }
 
     m_widget = gtk_notebook_new();

+    g_object_ref(m_widget);

 
 

-    g_signal_connect (m_widget, "switch_page",
-                      G_CALLBACK (gtk_mdi_page_change_callback), parent);
+    g_signal_connect(m_widget, "switch_page", G_CALLBACK(switch_page), parent);

 
     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 
 
     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 


@@ -516,4 +414,22 @@ bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
     return true;
 }
 
     return true;
 }
 

-#endif
+void wxMDIClientWindow::AddChildGTK(wxWindowGTK* child)
+{
+    wxMDIChildFrame* child_frame = static_cast<wxMDIChildFrame*>(child);
+    wxString s = child_frame->GetTitle();
+    if ( s.empty() )
+        s = _("MDI child");
+
+    GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
+    gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
+
+    GtkNotebook* notebook = GTK_NOTEBOOK(m_widget);
+
+    gtk_notebook_append_page( notebook, child->m_widget, label_widget );
+
+    wxMDIParentFrame* parent_frame = static_cast<wxMDIParentFrame*>(GetParent());
+    parent_frame->m_justInserted = true;
+}
+
+#endif // wxUSE_MDI