X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4bb6408c2631988fab9925014c6619358bf867de..3c0f8ed2509f8b6e806af093f1b5041c61649da1:/src/motif/mdi.cpp?ds=sidebyside

diff --git a/src/motif/mdi.cpp b/src/motif/mdi.cpp
index b1685194a4..fe31aa958a 100644
--- a/src/motif/mdi.cpp
+++ b/src/motif/mdi.cpp
@@ -1,105 +1,139 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        mdi.cpp
+// Name:        src/motif/mdi.cpp
 // Purpose:     MDI classes
 // Author:      Julian Smart
 // Modified by:
 // Created:     17/09/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
-// Licence:   	wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "mdi.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __VMS
+#define XtDisplay XTDISPLAY
+#define XtWindow XTWINDOW
 #endif
 
 #include "wx/mdi.h"
-#include "wx/menu.h"
-#include "wx/settings.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/menu.h"
+    #include "wx/icon.h"
+    #include "wx/settings.h"
+#endif
+
+#ifdef __VMS__
+#pragma message disable nosimpint
+#endif
+#include <Xm/Xm.h>
+#include <Xm/BulletinB.h>
+#include <Xm/Form.h>
+#include <Xm/MainW.h>
+#include <Xm/RowColumn.h>
+#include <Xm/CascadeBG.h>
+#include <Xm/Text.h>
+#include <Xm/PushBG.h>
+#include <Xm/AtomMgr.h>
+#include <Xm/Protocols.h>
+#ifdef __VMS__
+#pragma message enable nosimpint
+#endif
+
+#include "wx/motif/private.h"
 
 extern wxList wxModelessWindows;
 
-#if !USE_SHARED_LIBRARY
+// Implemented in frame.cpp
+extern void wxFrameFocusProc(Widget workArea, XtPointer clientData,
+                             XmAnyCallbackStruct *cbs);
+
+#define wxID_NOTEBOOK_CLIENT_AREA wxID_HIGHEST + 100
+
 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
-IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
+IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxNotebook)
 
 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
-  EVT_SIZE(wxMDIParentFrame::OnSize)
-  EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
-  EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
+    EVT_SIZE(wxMDIParentFrame::OnSize)
+    EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
+    EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
+    EVT_MENU_HIGHLIGHT_ALL(wxMDIParentFrame::OnMenuHighlight)
 END_EVENT_TABLE()
 
-BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
-  EVT_SCROLL(wxMDIClientWindow::OnScroll)
+BEGIN_EVENT_TABLE(wxMDIClientWindow, wxNotebook)
+    EVT_SCROLL(wxMDIClientWindow::OnScroll)
+    EVT_NOTEBOOK_PAGE_CHANGED(wxID_NOTEBOOK_CLIENT_AREA, wxMDIClientWindow::OnPageChanged)
 END_EVENT_TABLE()
 
-#endif
 
 // Parent frame
 
 wxMDIParentFrame::wxMDIParentFrame()
 {
+    m_clientWindow = (wxMDIClientWindow*) NULL;
+    m_activeChild = (wxMDIChildFrame*) NULL;
+    m_activeMenuBar = (wxMenuBar*) NULL;
 }
 
 bool wxMDIParentFrame::Create(wxWindow *parent,
-           wxWindowID id,
-           const wxString& title,
-           const wxPoint& pos,
-           const wxSize& size,
-           long style,
-           const wxString& name)
+                              wxWindowID id,
+                              const wxString& title,
+                              const wxPoint& pos,
+                              const wxSize& size,
+                              long style,
+                              const wxString& name)
 {
-    if (!parent)
-        wxTopLevelWindows.Append(this);
-
-    SetName(name);
-    m_windowStyle = style;
+    m_clientWindow = (wxMDIClientWindow*) NULL;
+    m_activeChild = (wxMDIChildFrame*) NULL;
+    m_activeMenuBar = (wxMenuBar*) NULL;
 
-    if (parent) parent->AddChild(this);
-
-    if ( id > -1 )
-        m_windowId = id;
-    else
-        m_windowId = (int)NewControlId();
+    bool success = wxFrame::Create(parent, id, title, pos, size, style, name);
+    if (success)
+    {
+        // TODO: app cannot override OnCreateClient since
+        // wxMDIParentFrame::OnCreateClient will still be called
+        // (we're in the constructor). How to resolve?
 
-    // TODO: create MDI parent frame
+        m_clientWindow = OnCreateClient();
 
-    wxModelessWindows.Append(this);
+        // Uses own style for client style
+        m_clientWindow->CreateClient(this, GetWindowStyleFlag());
 
-    return TRUE;
+        int w, h;
+        GetClientSize(& w, & h);
+        m_clientWindow->SetSize(0, 0, w, h);
+        return true;
+    }
+    else
+        return false;
 }
 
 wxMDIParentFrame::~wxMDIParentFrame()
 {
-}
+    // Make sure we delete the client window last of all
+    RemoveChild(m_clientWindow);
 
-// Get size *available for subwindows* i.e. excluding menu bar.
-void wxMDIParentFrame::GetClientSize(int *x, int *y) const
-{
-    // TODO
+    DestroyChildren();
+
+    delete m_clientWindow;
+    m_clientWindow = NULL;
 }
 
 void wxMDIParentFrame::SetMenuBar(wxMenuBar *menu_bar)
 {
-    // TODO
-    if (!menu_bar)
-    {
-        m_frameMenuBar = NULL;
-        return;
-    }
-  
-    if (menu_bar->m_menuBarFrame)
-	    return;
-
     m_frameMenuBar = menu_bar;
+
+    SetChildMenuBar((wxMDIChildFrame*) NULL);
 }
 
-void wxMDIParentFrame::OnSize(wxSizeEvent& event)
+void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 {
-#if USE_CONSTRAINTS
+#if wxUSE_CONSTRAINTS
     if (GetAutoLayout())
-      Layout();
+        Layout();
 #endif
     int x = 0;
     int y = 0;
@@ -110,23 +144,121 @@ void wxMDIParentFrame::OnSize(wxSizeEvent& event)
         GetClientWindow()->SetSize(x, y, width, height);
 }
 
-void wxMDIParentFrame::OnActivate(wxActivateEvent& event)
+void wxMDIParentFrame::DoGetClientSize(int *width, int *height) const
 {
-	// Do nothing
+    wxFrame::DoGetClientSize(width, height);
+}
+
+void wxMDIParentFrame::OnActivate(wxActivateEvent& WXUNUSED(event))
+{
+    // Do nothing
 }
 
 // Returns the active MDI child window
 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 {
-    // TODO
-    return NULL;
+    return m_activeChild;
 }
 
 // Create the client window class (don't Create the window,
 // just return a new class)
 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 {
-	return new wxMDIClientWindow ;
+    return new wxMDIClientWindow ;
+}
+
+// Set the child's menu into the parent frame
+void wxMDIParentFrame::SetChildMenuBar(wxMDIChildFrame* child)
+{
+    wxMenuBar* oldMenuBar = m_activeMenuBar;
+
+    if (child == (wxMDIChildFrame*) NULL)  // No child: use parent frame
+    {
+        if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
+        {
+            //            if (m_activeMenuBar)
+            //                m_activeMenuBar->DestroyMenuBar();
+
+            m_activeMenuBar = GetMenuBar();
+            m_activeMenuBar->CreateMenuBar(this);
+            /*
+            if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+            XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+            */
+            if (oldMenuBar && oldMenuBar->GetMainWidget())
+                XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+
+        }
+    }
+    else if (child->GetMenuBar() == (wxMenuBar*) NULL) // No child menu bar: use parent frame
+    {
+        if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
+        {
+            //            if (m_activeMenuBar)
+            //                m_activeMenuBar->DestroyMenuBar();
+            m_activeMenuBar = GetMenuBar();
+            m_activeMenuBar->CreateMenuBar(this);
+            /*
+            if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+            XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+            */
+            if (oldMenuBar && oldMenuBar->GetMainWidget())
+                XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+        }
+    }
+    else // The child has a menubar
+    {
+        if (child->GetMenuBar() != m_activeMenuBar)
+        {
+            //            if (m_activeMenuBar)
+            //                m_activeMenuBar->DestroyMenuBar();
+
+            m_activeMenuBar = child->GetMenuBar();
+            m_activeMenuBar->CreateMenuBar(this);
+            /*
+            if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+            XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+            */
+            if (oldMenuBar && oldMenuBar->GetMainWidget())
+                XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+        }
+    }
+}
+
+// Redirect events to active child first
+bool wxMDIParentFrame::ProcessEvent(wxEvent& event)
+{
+    // Stops the same event being processed repeatedly
+    static wxEventType inEvent = wxEVT_NULL;
+    if (inEvent == event.GetEventType())
+        return false;
+
+    inEvent = event.GetEventType();
+
+    bool res = false;
+    if (m_activeChild && event.IsKindOf(CLASSINFO(wxCommandEvent)))
+    {
+        res = m_activeChild->GetEventHandler()->ProcessEvent(event);
+    }
+
+    if (!res)
+        res = GetEventHandler()->wxEvtHandler::ProcessEvent(event);
+
+    inEvent = wxEVT_NULL;
+
+    return res;
+}
+
+void wxMDIParentFrame::DoSetSize(int x, int y,
+                                 int width, int height,
+                                 int sizeFlags)
+{
+    wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIParentFrame::DoSetClientSize(int width, int height)
+{
+    wxWindow::DoSetClientSize(width, height);
 }
 
 // Responds to colour changes, and passes event on to children.
@@ -144,7 +276,7 @@ void wxMDIParentFrame::Cascade()
     // TODO
 }
 
-void wxMDIParentFrame::Tile()
+void wxMDIParentFrame::Tile(wxOrientation WXUNUSED(orient))
 {
     // TODO
 }
@@ -164,63 +296,268 @@ void wxMDIParentFrame::ActivatePrevious()
     // TODO
 }
 
+// Default menu selection behaviour - display a help string
+void wxMDIParentFrame::OnMenuHighlight(wxMenuEvent& event)
+{
+    if (GetStatusBar())
+    {
+        if (event.GetMenuId() == -1)
+            SetStatusText(wxEmptyString);
+        else
+        {
+            wxMenuBar *menuBar = (wxMenuBar*) NULL;
+            if (GetActiveChild())
+              menuBar = GetActiveChild()->GetMenuBar();
+            else
+              menuBar = GetMenuBar();
+            if (menuBar)
+            {
+                wxString helpString(menuBar->GetHelpString(event.GetMenuId()));
+                if (!helpString.empty())
+                    SetStatusText(helpString);
+            }
+        }
+    }
+}
+
 // Child frame
 
 wxMDIChildFrame::wxMDIChildFrame()
 {
+    m_mdiParentFrame = (wxMDIParentFrame*) NULL;
 }
 
 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
-           wxWindowID id,
-           const wxString& title,
-           const wxPoint& pos,
-           const wxSize& size,
-           long style,
-           const wxString& name)
+                             wxWindowID id,
+                             const wxString& title,
+                             const wxPoint& pos,
+                             const wxSize& size,
+                             long style,
+                             const wxString& name)
 {
     SetName(name);
+    SetWindowStyleFlag(style);
 
     if ( id > -1 )
         m_windowId = id;
     else
         m_windowId = (int)NewControlId();
 
-    if (parent) parent->AddChild(this);
+    wxMDIClientWindow* clientWindow = parent->GetClientWindow();
+
+    wxCHECK_MSG( clientWindow, false, "Missing MDI client window." );
+
+    clientWindow->AddChild(this);
+
+    SetMDIParentFrame(parent);
+    PreCreation();
+
+    int width = size.x;
+    int height = size.y;
+    if (width == -1)
+        width = 200; // TODO: give reasonable default
+    if (height == -1)
+        height = 200; // TODO: give reasonable default
+
+    // We're deactivating the old child
+    wxMDIChildFrame* oldActiveChild = parent->GetActiveChild();
+    if (oldActiveChild)
+    {
+        wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+        event.SetEventObject( oldActiveChild );
+        oldActiveChild->GetEventHandler()->ProcessEvent(event);
+    }
+
+    // This is the currently active child
+    parent->SetActiveChild((wxMDIChildFrame*) this);
+
+    // This time we'll try a bog-standard bulletin board for
+    // the 'frame'. A main window doesn't seem to work.
+
+    m_mainWidget = (WXWidget) XtVaCreateWidget("client",
+        xmBulletinBoardWidgetClass, (Widget) clientWindow->GetTopWidget(),
+        XmNmarginWidth, 0,
+        XmNmarginHeight, 0,
+        /*
+        XmNrightAttachment, XmATTACH_FORM,
+        XmNleftAttachment, XmATTACH_FORM,
+        XmNtopAttachment, XmATTACH_FORM,
+        XmNbottomAttachment, XmATTACH_FORM,
+        */
+        XmNresizePolicy, XmRESIZE_NONE,
+        NULL);
+
+    XtAddEventHandler((Widget) m_mainWidget, ExposureMask,False,
+        wxUniversalRepaintProc, (XtPointer) this);
 
-    // TODO: create child frame
+    PostCreation();
+    AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
+
+    XtManageChild((Widget) m_mainWidget);
+
+    SetTitle(title);
+
+    clientWindow->AddPage(this, title, true);
+    clientWindow->Refresh();
+
+    // Positions the toolbar and status bar -- but we don't have any.
+    //    PreResize();
 
     wxModelessWindows.Append(this);
-    return FALSE;
+    return true;
 }
 
+
 wxMDIChildFrame::~wxMDIChildFrame()
 {
+    if (m_mainWidget)
+      XtRemoveEventHandler((Widget) m_mainWidget, ExposureMask,False,
+        wxUniversalRepaintProc, (XtPointer) this);
+
+    if (GetMDIParentFrame())
+    {
+        wxMDIParentFrame* parentFrame = GetMDIParentFrame();
+
+        if (parentFrame->GetActiveChild() == this)
+            parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+        wxMDIClientWindow* clientWindow = parentFrame->GetClientWindow();
+
+        // Remove page if still there
+        {
+            int i = clientWindow->FindPage(this);
+
+            if (i != -1)
+            {
+                clientWindow->RemovePage(i);
+                clientWindow->Refresh();
+            }
+        }
+
+        // Set the selection to the first remaining page
+        if (clientWindow->GetPageCount() > 0)
+        {
+            wxMDIChildFrame* child = (wxMDIChildFrame*)  clientWindow->GetPage(0);
+            parentFrame->SetActiveChild(child);
+            parentFrame->SetChildMenuBar(child);
+        }
+        else
+        {
+            parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+            parentFrame->SetChildMenuBar((wxMDIChildFrame*) NULL);
+        }
+    }
 }
 
+#if 0
+// Implementation: intercept and act upon raise and lower commands.
+void wxMDIChildFrame::OnRaise()
+{
+    wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
+    wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
+    parentFrame->SetActiveChild(this);
+
+    if (oldActiveChild)
+    {
+        wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+        event.SetEventObject( oldActiveChild );
+        oldActiveChild->GetEventHandler()->ProcessEvent(event);
+    }
+
+    wxActivateEvent event(wxEVT_ACTIVATE, true, this->GetId());
+    event.SetEventObject( this );
+    this->GetEventHandler()->ProcessEvent(event);
+}
+
+void wxMDIChildFrame::OnLower()
+{
+    wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
+    wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
+
+    if (oldActiveChild == this)
+    {
+        wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+        event.SetEventObject( oldActiveChild );
+        oldActiveChild->GetEventHandler()->ProcessEvent(event);
+    }
+    // TODO: unfortunately we don't now know which is the top-most child,
+    // so make the active child NULL.
+    parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+}
+#endif
+
 // Set the client size (i.e. leave the calculation of borders etc.
-// to wxWindows)
-void wxMDIChildFrame::SetClientSize(int width, int height)
+// to wxWidgets)
+void wxMDIChildFrame::DoSetClientSize(int width, int height)
 {
-    // TODO
+    wxWindow::DoSetClientSize(width, height);
 }
 
-void wxMDIChildFrame::GetPosition(int *x, int *y) const
+void wxMDIChildFrame::DoGetClientSize(int* width, int* height) const
 {
-    // TODO
+    wxWindow::DoGetSize(width, height);
 }
 
-void wxMDIChildFrame::SetMenuBar(wxMenuBar *menu_bar)
+void wxMDIChildFrame::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 {
-    // TODO
-    if (!menu_bar)
+    wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIChildFrame::DoGetSize(int* width, int* height) const
+{
+    wxWindow::DoGetSize(width, height);
+}
+
+void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
+{
+    wxWindow::DoGetPosition(x, y);
+}
+
+bool wxMDIChildFrame::Show(bool show)
+{
+    SetVisibleStatus( show );
+    return wxWindow::Show(show);
+}
+
+void wxMDIChildFrame::SetMenuBar(wxMenuBar *menuBar)
+{
+    // Don't create the underlying menubar yet; need to recreate
+    // it every time the child is activated.
+    m_frameMenuBar = menuBar;
+
+    // We make the assumption that if you're setting the menubar,
+    // this is the currently active child.
+    GetMDIParentFrame()->SetChildMenuBar(this);
+}
+
+// Set icon
+void wxMDIChildFrame::SetIcon(const wxIcon& icon)
+{
+    m_icons = wxIconBundle( icon );
+
+    if (icon.Ok())
     {
-        m_frameMenuBar = NULL;
-        return;
+        // Not appropriate since there are no icons in
+        // a tabbed window
+    }
+}
+
+void wxMDIChildFrame::SetIcons(const wxIconBundle& icons)
+{
+    m_icons = icons;
+}
+
+void wxMDIChildFrame::SetTitle(const wxString& title)
+{
+    wxTopLevelWindow::SetTitle( title );
+    wxMDIClientWindow* clientWindow = GetMDIParentFrame()->GetClientWindow();
+
+    // Remove page if still there
+    {
+        int i = clientWindow->FindPage(this);
+
+        if (i != -1)
+            clientWindow->SetPageText(i, title);
     }
-  
-    if (menu_bar->m_menuBarFrame)
-	    return;
-    m_frameMenuBar = menu_bar;
 }
 
 // MDI operations
@@ -229,6 +566,23 @@ void wxMDIChildFrame::Maximize()
     // TODO
 }
 
+void wxMDIChildFrame::Iconize(bool WXUNUSED(iconize))
+{
+    // TODO
+}
+
+bool wxMDIChildFrame::IsIconized() const
+{
+    return false;
+}
+
+// Is it maximized? Always maximized under Motif, using the
+// tabbed MDI implementation.
+bool wxMDIChildFrame::IsMaximized(void) const
+{
+    return true;
+}
+
 void wxMDIChildFrame::Restore()
 {
     // TODO
@@ -239,6 +593,30 @@ void wxMDIChildFrame::Activate()
     // TODO
 }
 
+void wxMDIChildFrame::CaptureMouse()
+{
+    wxWindow::CaptureMouse();
+}
+
+void wxMDIChildFrame::ReleaseMouse()
+{
+    wxWindow::ReleaseMouse();
+}
+
+void wxMDIChildFrame::Raise()
+{
+    wxWindow::Raise();
+}
+
+void wxMDIChildFrame::Lower(void)
+{
+    wxWindow::Raise();
+}
+
+void wxMDIChildFrame::DoSetSizeHints(int WXUNUSED(minW), int WXUNUSED(minH), int WXUNUSED(maxW), int WXUNUSED(maxH), int WXUNUSED(incW), int WXUNUSED(incH))
+{
+}
+
 // Client window
 
 wxMDIClientWindow::wxMDIClientWindow()
@@ -247,19 +625,96 @@ wxMDIClientWindow::wxMDIClientWindow()
 
 wxMDIClientWindow::~wxMDIClientWindow()
 {
+    // By the time this destructor is called, the child frames will have been
+    // deleted and removed from the notebook/client window.
+    DestroyChildren();
+
+    m_mainWidget = (WXWidget) 0;
 }
 
 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
 {
-    // TODO create client window
-    m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
+    SetWindowStyleFlag(style);
+
+    bool success = wxNotebook::Create(parent, wxID_NOTEBOOK_CLIENT_AREA, wxPoint(0, 0), wxSize(100, 100), 0);
+    if (success)
+    {
+        return true;
+    }
+    else
+        return false;
+}
+
+int wxMDIClientWindow::FindPage(const wxNotebookPage* page)
+{
+    for (int i = GetPageCount() - 1; i >= 0; --i)
+    {
+        if (GetPage(i) == page)
+            return i;
+    }
+
+    return -1;
+}
+
+void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+{
+    wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIClientWindow::DoSetClientSize(int width, int height)
+{
+    wxWindow::DoSetClientSize(width, height);
+}
 
-    return FALSE;
+void wxMDIClientWindow::DoGetClientSize(int *width, int *height) const
+{
+    wxWindow::DoGetClientSize(width, height);
+}
+
+void wxMDIClientWindow::DoGetSize(int *width, int *height) const
+{
+    wxWindow::DoGetSize(width, height);
+}
+
+void wxMDIClientWindow::DoGetPosition(int *x, int *y) const
+{
+    wxWindow::DoGetPosition(x, y);
 }
 
-// Explicitly call default scroll behaviour
 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
 {
-    Default(); // Default processing
+    //    Default(); // Default processing: OBSOLETE FUNCTION
+    event.Skip();
 }
 
+void wxMDIClientWindow::OnPageChanged(wxNotebookEvent& event)
+{
+    // Notify child that it has been activated
+    if (event.GetOldSelection() != -1)
+    {
+        wxMDIChildFrame* oldChild = (wxMDIChildFrame*) GetPage(event.GetOldSelection());
+        if (oldChild)
+        {
+            wxActivateEvent event(wxEVT_ACTIVATE, false, oldChild->GetId());
+            event.SetEventObject( oldChild );
+            oldChild->GetEventHandler()->ProcessEvent(event);
+        }
+    }
+    if (event.GetSelection() != -1)
+    {
+        wxMDIChildFrame* activeChild = (wxMDIChildFrame*) GetPage(event.GetSelection());
+        if (activeChild)
+        {
+            wxActivateEvent event(wxEVT_ACTIVATE, true, activeChild->GetId());
+            event.SetEventObject( activeChild );
+            activeChild->GetEventHandler()->ProcessEvent(event);
+
+            if (activeChild->GetMDIParentFrame())
+            {
+                activeChild->GetMDIParentFrame()->SetActiveChild(activeChild);
+                activeChild->GetMDIParentFrame()->SetChildMenuBar(activeChild);
+            }
+        }
+    }
+    event.Skip();
+}