X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a23fd0e1d1329a4a258b4defb3e0b0001b700c6e..120678ee96cd38c8d10ead6e60135004b8e97f9e:/src/msw/mdi.cpp

diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 7f933c7c84..5a3fcf83af 100644
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        mdi.cpp
-// Purpose:     MDI classes
+// Name:        src/msw/mdi.cpp
+// Purpose:     MDI classes for wxMSW
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:     wxWindows license
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ===========================================================================
@@ -17,7 +17,7 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "mdi.h"
 #endif
 
@@ -28,6 +28,8 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_MDI && !defined(__WXUNIVERSAL__)
+
 #ifndef WX_PRECOMP
     #include "wx/setup.h"
     #include "wx/frame.h"
@@ -35,40 +37,52 @@
     #include "wx/app.h"
     #include "wx/utils.h"
     #include "wx/dialog.h"
-    #include "wx/statusbr.h"
+    #if wxUSE_STATUSBAR
+        #include "wx/statusbr.h"
+    #endif
     #include "wx/settings.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
 #endif
 
 #include "wx/mdi.h"
 #include "wx/msw/private.h"
 
-#if wxUSE_NATIVE_STATUSBAR
-    #include <wx/msw/statbr95.h>
+#if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
+    #include "wx/msw/statbr95.h"
 #endif
 
+#if wxUSE_TOOLBAR
+    #include "wx/toolbar.h"
+#endif // wxUSE_TOOLBAR
+
 #include <string.h>
 
 // ---------------------------------------------------------------------------
 // global variables
 // ---------------------------------------------------------------------------
 
-extern wxWindowList wxModelessWindows;      // from dialog.cpp
 extern wxMenu *wxCurrentPopupMenu;
 
-extern char wxMDIFrameClassName[];
-extern char wxMDIChildFrameClassName[];
-extern wxWindow *wxWndHook;                 // from window.cpp
+extern const wxChar *wxMDIFrameClassName;   // from app.cpp
+extern const wxChar *wxMDIChildFrameClassName;
+extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
+extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
+extern void wxRemoveHandleAssociation(wxWindow *win);
 
-extern wxList *wxWinHandleList;
+static HWND invalidHandle = 0;
 
 // ---------------------------------------------------------------------------
 // constants
 // ---------------------------------------------------------------------------
 
 static const int IDM_WINDOWTILE  = 4001;
+static const int IDM_WINDOWTILEHOR  = 4001;
 static const int IDM_WINDOWCASCADE = 4002;
 static const int IDM_WINDOWICONS = 4003;
 static const int IDM_WINDOWNEXT = 4004;
+static const int IDM_WINDOWTILEVERT = 4005;
+static const int IDM_WINDOWPREV = 4006;
 
 // This range gives a maximum of 500 MDI children. Should be enough :-)
 static const int wxFIRST_MDI_CHILD = 4100;
@@ -78,6 +92,38 @@ static const int wxLAST_MDI_CHILD = 4600;
 static const int wxTHICK_LINE_BORDER = 3;
 static const int wxTHICK_LINE_WIDTH  = 1;
 
+// ---------------------------------------------------------------------------
+// private functions
+// ---------------------------------------------------------------------------
+
+// set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
+// of the parent of win (which is supposed to be the MDI client window)
+static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
+
+// insert the window menu (subMenu) into menu just before "Help" submenu or at
+// the very end if not found
+static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
+
+// Remove the window menu
+static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
+
+// is this an id of an MDI child?
+inline bool IsMdiCommandId(int id)
+{
+    return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
+}
+
+// unpack the parameters of WM_MDIACTIVATE message
+static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
+                              WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
+
+// return the HMENU of the MDI menu
+static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
+{
+    wxMenu *menu = frame->GetWindowMenu();
+    return menu ? GetHmenuOf(menu) : 0;
+}
+
 // ===========================================================================
 // implementation
 // ===========================================================================
@@ -86,32 +132,34 @@ static const int wxTHICK_LINE_WIDTH  = 1;
 // wxWin macros
 // ---------------------------------------------------------------------------
 
-#if !USE_SHARED_LIBRARY
-    IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
-    IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
-    IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
-#endif // USE_SHARED_LIBRARY
+IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
+IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
+IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 
 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
     EVT_SIZE(wxMDIParentFrame::OnSize)
-    EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 END_EVENT_TABLE()
 
+BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
+    EVT_IDLE(wxMDIChildFrame::OnIdle)
+END_EVENT_TABLE()
+
 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 END_EVENT_TABLE()
 
-// ---------------------------------------------------------------------------
-// wxMDIParentFrame
-// ---------------------------------------------------------------------------
+// ===========================================================================
+// wxMDIParentFrame: the frame which contains the client window which manages
+// the children
+// ===========================================================================
 
 wxMDIParentFrame::wxMDIParentFrame()
 {
     m_clientWindow = NULL;
     m_currentChild = NULL;
-    m_windowMenu = 0;
-    m_parentFrameActive = TRUE;
+    m_windowMenu = (wxMenu*) NULL;
+    m_parentFrameActive = true;
 }
 
 bool wxMDIParentFrame::Create(wxWindow *parent,
@@ -122,12 +170,29 @@ bool wxMDIParentFrame::Create(wxWindow *parent,
                               long style,
                               const wxString& name)
 {
-  m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON : wxDEFAULT_MDIPARENTFRAME_ICON);
-
   m_clientWindow = NULL;
   m_currentChild = NULL;
-  m_windowMenu = 0;
-  m_parentFrameActive = TRUE;
+
+  // this style can be used to prevent a window from having the standard MDI
+  // "Window" menu
+  if ( style & wxFRAME_NO_WINDOW_MENU )
+  {
+      m_windowMenu = (wxMenu *)NULL;
+  }
+  else // normal case: we have the window menu, so construct it
+  {
+      m_windowMenu = new wxMenu;
+
+      m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
+      m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
+      m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
+      m_windowMenu->AppendSeparator();
+      m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
+      m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
+      m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
+  }
+
+  m_parentFrameActive = true;
 
   if (!parent)
     wxTopLevelWindows.Append(this);
@@ -135,141 +200,143 @@ bool wxMDIParentFrame::Create(wxWindow *parent,
   SetName(name);
   m_windowStyle = style;
 
-  if (parent) parent->AddChild(this);
+  if ( parent )
+      parent->AddChild(this);
 
-  if ( id > -1 )
+  if ( id != wxID_ANY )
     m_windowId = id;
   else
-    m_windowId = (int)NewControlId();
-
-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
-
-  m_windowMenu = (WXHMENU) ::LoadMenu(wxGetInstance(), "wxWindowMenu");
-
-  DWORD msflags = WS_OVERLAPPED ;
-  if (style & wxMINIMIZE_BOX)
-    msflags |= WS_MINIMIZEBOX;
-  if (style & wxMAXIMIZE_BOX)
-    msflags |= WS_MAXIMIZEBOX;
-  if (style & wxTHICK_FRAME)
-    msflags |= WS_THICKFRAME;
-  if (style & wxSYSTEM_MENU)
-    msflags |= WS_SYSMENU;
-  if ((style & wxMINIMIZE) || (style & wxICONIZE))
-    msflags |= WS_MINIMIZE;
-  if (style & wxMAXIMIZE)
-    msflags |= WS_MAXIMIZE;
-  if (style & wxCAPTION)
-    msflags |= WS_CAPTION;
-
-  // Adding WS_CLIPCHILDREN causes children not to be properly
-  // drawn when first displaying them.
-//  if (style & wxCLIP_CHILDREN)
-//    msflags |= WS_CLIPCHILDREN;
-
-  wxWindow::MSWCreate(m_windowId, parent, wxMDIFrameClassName, this, title, x, y, width, height,
-         msflags);
+    m_windowId = NewControlId();
+
+  WXDWORD exflags;
+  WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
+  msflags &= ~WS_VSCROLL;
+  msflags &= ~WS_HSCROLL;
+
+  if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
+                            title,
+                            pos, size,
+                            msflags,
+                            exflags) )
+  {
+      return false;
+  }
 
-  wxModelessWindows.Append(this);
+  // unlike (almost?) all other windows, frames are created hidden
+  m_isShown = false;
 
-  return TRUE;
+  return true;
 }
 
 wxMDIParentFrame::~wxMDIParentFrame()
 {
-  DestroyChildren();
+    // see comment in ~wxMDIChildFrame
+#if wxUSE_TOOLBAR
+    m_frameToolBar = NULL;
+#endif
+#if wxUSE_STATUSBAR
+    m_frameStatusBar = NULL;
+#endif // wxUSE_STATUSBAR
 
-  DestroyMenu((HMENU) m_windowMenu); // Destroy dummy "Window" menu
-  m_windowMenu = 0;
+    DestroyChildren();
 
-  if (m_clientWindow->MSWGetOldWndProc())
-      m_clientWindow->UnsubclassWin();
+    if (m_windowMenu)
+    {
+        delete m_windowMenu;
+        m_windowMenu = (wxMenu*) NULL;
+    }
 
-  m_clientWindow->SetHWND(0);
-  delete m_clientWindow;
-}
+    // the MDI frame menubar is not automatically deleted by Windows unlike for
+    // the normal frames
+    if ( m_hMenu )
+    {
+        ::DestroyMenu((HMENU)m_hMenu);
+        m_hMenu = (WXHMENU)NULL;
+    }
 
-void wxMDIParentFrame::SetMenuBar(wxMenuBar *menu_bar)
-{
-  if (!menu_bar)
-  {
-    m_frameMenuBar = NULL;
-    return;
-  }
+    if ( m_clientWindow )
+    {
+        if ( m_clientWindow->MSWGetOldWndProc() )
+            m_clientWindow->UnsubclassWin();
 
-  if ( menu_bar->IsAttached() )
-     return;
+        m_clientWindow->SetHWND(0);
+        delete m_clientWindow;
+    }
+}
 
-  m_hMenu = menu_bar->Create();
+#if wxUSE_MENUS_NATIVE
 
-  if (m_frameMenuBar)
-    delete m_frameMenuBar;
+void wxMDIParentFrame::InternalSetMenuBar()
+{
+    m_parentFrameActive = true;
 
-  // MDI parent-specific code follows
+    InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
+}
 
-  HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
+#endif // wxUSE_MENUS_NATIVE
 
-  // Try to insert Window menu in front of Help, otherwise append it.
-  HMENU menu = (HMENU)m_hMenu;
-  int N = GetMenuItemCount(menu);
-  bool success = FALSE;
-  for (int i = 0; i < N; i++)
-  {
-        char buf[100];
-        int chars = GetMenuString(menu, i, buf, 100, MF_BYPOSITION);
-        if ((chars > 0) && (strcmp(buf, "&Help") == 0 ||
-                            strcmp(buf, "Help") == 0))
+void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
+{
+    if (m_windowMenu)
+    {
+        if (GetMenuBar())
         {
-           success = TRUE;
-           InsertMenu(menu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
-                      (UINT)subMenu, "&Window");
-           break;
+            // Remove old window menu
+            RemoveWindowMenu(GetClientWindow(), m_hMenu);
         }
-  }
-  if (!success)
-    AppendMenu(menu, MF_POPUP,
-                         (UINT)subMenu,
-                         "&Window");
-  m_parentFrameActive = TRUE;
-#ifdef __WIN32__
-  SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDISETMENU,
-                (WPARAM)menu,
-                  (LPARAM)subMenu);
-#else
-  SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
-              MAKELPARAM(menu, subMenu));
-#endif
-  DrawMenuBar((HWND) GetHWND());
 
-  m_frameMenuBar = menu_bar;
-  menu_bar->Attach(this);
-}
+        delete m_windowMenu;
+        m_windowMenu = (wxMenu*) NULL;
+    }
 
-void wxMDIParentFrame::OnSize(wxSizeEvent& event)
-{
-#if wxUSE_CONSTRAINTS
-    if ( GetAutoLayout() )
+    if (menu)
     {
-        Layout();
-        return;
+        m_windowMenu = menu;
+        if (GetMenuBar())
+        {
+            InsertWindowMenu(GetClientWindow(), m_hMenu,
+                             GetHmenuOf(m_windowMenu));
+        }
     }
-#endif // wxUSE_CONSTRAINTS
+}
 
-    int x = 0;
-    int y = 0;
-    int width, height;
-    GetClientSize(&width, &height);
+void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
+{
+    wxMDIChildFrame *child = GetActiveChild();
+    if ( child )
+    {
+        wxEvtHandler* source = child->GetEventHandler();
+        wxMenuBar* bar = child->GetMenuBar();
 
-    if ( GetClientWindow() )
-        GetClientWindow()->SetSize(x, y, width, height);
+        if (menu)
+        {
+            menu->UpdateUI(source);
+        }
+        else
+        {
+            if ( bar != NULL )
+            {
+                int nCount = bar->GetMenuCount();
+                for (int n = 0; n < nCount; n++)
+                bar->GetMenu(n)->UpdateUI(source);
+            }
+        }
+    }
+    else
+    {
+        wxFrameBase::DoMenuUpdates(menu);
+    }
 }
 
-void wxMDIParentFrame::OnActivate(wxActivateEvent& event)
+void wxMDIParentFrame::OnSize(wxSizeEvent&)
 {
-    // Do nothing
+    if ( GetClientWindow() )
+    {
+        int width, height;
+        GetClientSize(&width, &height);
+
+        GetClientWindow()->SetSize(0, 0, width, height);
+    }
 }
 
 // Returns the active MDI child window
@@ -295,31 +362,36 @@ void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 {
     if ( m_clientWindow )
     {
-        m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
+        m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
         m_clientWindow->Refresh();
     }
-/*
-    if ( m_frameToolBar )
-    {
-        wxSysColourChangedEvent event2;
-        event2.eventObject = m_frameToolBar;
-        m_frameToolBar->GetEventHandler()->ProcessEvent(event2);
-    }
-*/
 
-    // Propagate the event to the non-top-level children
-    wxFrame::OnSysColourChanged(event);
+    event.Skip();
 }
 
+WXHICON wxMDIParentFrame::GetDefaultIcon() const
+{
+    // we don't have any standard icons (any more)
+    return (WXHICON)0;
+}
+
+// ---------------------------------------------------------------------------
 // MDI operations
+// ---------------------------------------------------------------------------
+
 void wxMDIParentFrame::Cascade()
 {
     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 }
 
-void wxMDIParentFrame::Tile()
+void wxMDIParentFrame::Tile(wxOrientation orient)
 {
-    ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
+    wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
+                  _T("invalid orientation value") );
+
+    ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
+                  orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
+                                         : MDITILE_VERTICAL, 0);
 }
 
 void wxMDIParentFrame::ArrangeIcons()
@@ -337,16 +409,48 @@ void wxMDIParentFrame::ActivatePrevious()
     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 }
 
+// ---------------------------------------------------------------------------
 // the MDI parent frame window proc
-long wxMDIParentFrame::MSWWindowProc(WXUINT message,
+// ---------------------------------------------------------------------------
+
+WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
                                      WXWPARAM wParam,
                                      WXLPARAM lParam)
 {
-    long rc = 0;
-    bool processed = FALSE;
+    WXLRESULT rc = 0;
+    bool processed = false;
 
     switch ( message )
     {
+        case WM_ACTIVATE:
+            {
+                WXWORD state, minimized;
+                WXHWND hwnd;
+                UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
+
+                processed = HandleActivate(state, minimized != 0, hwnd);
+            }
+            break;
+
+        case WM_COMMAND:
+            {
+                WXWORD id, cmd;
+                WXHWND hwnd;
+                UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
+
+                (void)HandleCommand(id, cmd, hwnd);
+
+                // even if the frame didn't process it, there is no need to try it
+                // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
+                // so pretend we processed the message anyhow
+                processed = true;
+            }
+
+            // always pass this message DefFrameProc(), otherwise MDI menu
+            // commands (and sys commands - more surprisingly!) won't work
+            MSWDefWindowProc(message, wParam, lParam);
+            break;
+
         case WM_CREATE:
             m_clientWindow = OnCreateClient();
             // Uses own style for client style
@@ -357,37 +461,38 @@ long wxMDIParentFrame::MSWWindowProc(WXUINT message,
                 rc = -1;
             }
 
-            processed = TRUE;
+            processed = true;
             break;
 
         case WM_ERASEBKGND:
-            processed = TRUE;
+            processed = true;
 
             // we erase background ourselves
-            rc = TRUE;
+            rc = true;
             break;
 
         case WM_MENUSELECT:
             {
-                WORD item = (WORD)wParam;
-#ifdef __WIN32__
-                WORD flags = HIWORD(wParam);
-                HMENU menu = (HMENU)lParam;
-#else
-                WORD flags = LOWORD(lParam);
-                HMENU menu = (HMENU)HIWORD(lParam);
-#endif
+                WXWORD item, flags;
+                WXHMENU hmenu;
+                UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
+
                 if ( m_parentFrameActive )
                 {
-                    processed = HandleMenuSelect(item, flags, (WXHMENU)menu);
+                    processed = HandleMenuSelect(item, flags, hmenu);
                 }
                 else if (m_currentChild)
                 {
                     processed = m_currentChild->
-                        HandleMenuSelect(item, flags, (WXHMENU)menu);
+                        HandleMenuSelect(item, flags, hmenu);
                 }
             }
             break;
+
+        case WM_SIZE:
+            // though we don't (usually) resize the MDI client to exactly fit the
+            // client area we need to pass this one to DefFrameProc to allow the children to show
+            break;
     }
 
     if ( !processed )
@@ -396,116 +501,134 @@ long wxMDIParentFrame::MSWWindowProc(WXUINT message,
     return rc;
 }
 
-bool wxMDIParentFrame::MSWOnActivate(int state, bool minimized, WXHWND activate)
+bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 {
-    bool processed = FALSE;
+    bool processed = false;
 
-    if ( wxWindow::MSWOnActivate(state, minimized, activate) )
+    if ( wxWindow::HandleActivate(state, minimized, activate) )
     {
         // already processed
-        processed = TRUE;
+        processed = true;
     }
 
     // If this window is an MDI parent, we must also send an OnActivate message
     // to the current child.
-    if ( (m_currentChild != NULL) && 
+    if ( (m_currentChild != NULL) &&
          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
     {
-        wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
+        wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
         event.SetEventObject( m_currentChild );
         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
-            processed = TRUE;
+            processed = true;
     }
 
     return processed;
 }
 
-bool wxMDIParentFrame::MSWOnCommand(WXWORD id, WXWORD cmd, WXHWND control)
+bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 {
-//  if (cmd == 0) // Why did I do this test?
-  {
     // In case it's e.g. a toolbar.
-    wxWindow *win = wxFindWinFromHandle(control);
-    if (win)
-      return win->MSWCommand(cmd, id);
-
-/*
-    if (wxCurrentPopupMenu)
+    if ( hwnd )
     {
-        wxMenu *popupMenu = wxCurrentPopupMenu;
-        wxCurrentPopupMenu = NULL;
-        if (!popupMenu->MSWCommand(cmd, id))
-            return TRUE;
+        wxWindow *win = wxFindWinFromHandle(hwnd);
+        if ( win )
+            return win->MSWCommand(cmd, id);
     }
-*/
 
-    switch (id)
-    {
-      case IDM_WINDOWCASCADE:
-        SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDICASCADE, MDITILE_SKIPDISABLED, 0);
-        return TRUE;
-      case IDM_WINDOWTILE:
-        SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDITILE, MDITILE_HORIZONTAL, 0);
-        return TRUE;
-      case IDM_WINDOWICONS:
-        SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDIICONARRANGE, 0, 0);
-        return TRUE;
-      case IDM_WINDOWNEXT:
-        SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDINEXT, 0, 0);
-        return TRUE;
-      default:
-        break;
-     }
-    if (id >= 0xF000)
+    // is it one of standard MDI commands?
+    WXWPARAM wParam = 0;
+    WXLPARAM lParam = 0;
+    int msg;
+    switch ( id )
     {
-      return FALSE; // Get WndProc to call default proc
+        case IDM_WINDOWCASCADE:
+            msg = WM_MDICASCADE;
+            wParam = MDITILE_SKIPDISABLED;
+            break;
+
+        case IDM_WINDOWTILEHOR:
+            wParam |= MDITILE_HORIZONTAL;
+            // fall through
+
+        case IDM_WINDOWTILEVERT:
+            if ( !wParam )
+                wParam = MDITILE_VERTICAL;
+            msg = WM_MDITILE;
+            wParam |= MDITILE_SKIPDISABLED;
+            break;
+
+        case IDM_WINDOWICONS:
+            msg = WM_MDIICONARRANGE;
+            break;
+
+        case IDM_WINDOWNEXT:
+            msg = WM_MDINEXT;
+            lParam = 0;         // next child
+            break;
+
+        case IDM_WINDOWPREV:
+            msg = WM_MDINEXT;
+            lParam = 1;         // previous child
+            break;
+
+        default:
+            msg = 0;
     }
 
-    if (m_parentFrameActive && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
+    if ( msg )
     {
-      ProcessCommand(id);
-      return TRUE;
+        ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
+
+        return true;
     }
-    else if (m_currentChild && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
+
+    // FIXME VZ: what does this test do??
+    if (id >= 0xF000)
     {
-      return m_currentChild->MSWOnCommand(id, cmd, control);
+        return false; // Get WndProc to call default proc
     }
-  }
-  if (id >= wxFIRST_MDI_CHILD && id <= wxLAST_MDI_CHILD)
-  {
-    wxNode* node = GetChildren().First();
-    while (node)
+
+    if ( IsMdiCommandId(id) )
     {
-        wxWindow* child = (wxWindow*) node->Data();
-        if (child->GetHWND())
+        wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
+        while ( node )
         {
-#ifdef __WIN32__
-            long childId = GetWindowLong((HWND) child->GetHWND(), GWL_ID);
-#else
-            long childId = GetWindowWord((HWND) child->GetHWND(), GWW_ID);
-#endif
-            if (childId == id)
+            wxWindow *child = node->GetData();
+            if ( child->GetHWND() )
             {
-                ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
-                return TRUE;
+                long childId = wxGetWindowId(child->GetHWND());
+                if (childId == (long)id)
+                {
+                    ::SendMessage( GetWinHwnd(GetClientWindow()),
+                                   WM_MDIACTIVATE,
+                                   (WPARAM)child->GetHWND(), 0);
+                    return true;
+                }
             }
+            node = node->GetNext();
         }
-        node = node->Next();
     }
-/*
-    wxWindow* child = FindItem(id);
-    if (child)
+    else if ( m_parentFrameActive )
     {
-        ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
-        return TRUE;
+        return ProcessCommand(id);
+    }
+    else if ( m_currentChild )
+    {
+        return m_currentChild->HandleCommand(id, cmd, hwnd);
+    }
+    else
+    {
+        // this shouldn't happen because it means that our messages are being
+        // lost (they're not sent to the parent frame nor to the children)
+        wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
     }
-*/
-  }
 
-  return wxWindow::MSWOnCommand(id, cmd, control);
+    return false;
 }
 
-long wxMDIParentFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
+                                        WXWPARAM wParam,
+                                        WXLPARAM lParam)
 {
     WXHWND clientWnd;
     if ( GetClientWindow() )
@@ -516,46 +639,41 @@ long wxMDIParentFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARA
     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 }
 
-bool wxMDIParentFrame::MSWProcessMessage(WXMSG* msg)
-{
-    return m_currentChild && m_currentChild->GetHWND() &&
-           m_currentChild->MSWProcessMessage(msg);
-}
-
 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 {
     MSG *pMsg = (MSG *)msg;
 
+    // first let the current child get it
     if ( m_currentChild && m_currentChild->GetHWND() &&
          m_currentChild->MSWTranslateMessage(msg) )
     {
-        return TRUE;
+        return true;
     }
 
-    if ( m_acceleratorTable.Ok() &&
-         ::TranslateAccelerator(GetHwnd(),
-                                GetTableHaccel(&m_acceleratorTable),
-                                pMsg) )
+    // then try out accel table (will also check the menu accels)
+    if ( wxFrame::MSWTranslateMessage(msg) )
     {
-        return TRUE;
+        return true;
     }
 
+    // finally, check for MDI specific built in accel keys
     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
     {
         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
-            return TRUE;
+            return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-// ---------------------------------------------------------------------------
+// ===========================================================================
 // wxMDIChildFrame
-// ---------------------------------------------------------------------------
+// ===========================================================================
 
-wxMDIChildFrame::wxMDIChildFrame()
+void wxMDIChildFrame::Init()
 {
-//    m_active = FALSE;
+    m_needsResize = true;
+    m_needsInitialShow = true;
 }
 
 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
@@ -566,18 +684,17 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
                              long style,
                              const wxString& name)
 {
-  m_defaultIcon = (WXHICON) (wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON : wxDEFAULT_MDICHILDFRAME_ICON);
-
   SetName(name);
 
-  if ( id > -1 )
+  if ( id != wxID_ANY )
     m_windowId = id;
   else
     m_windowId = (int)NewControlId();
 
-  if (parent) parent->AddChild(this);
-
-  wxWndHook = this;
+  if ( parent )
+  {
+      parent->AddChild(this);
+  }
 
   int x = pos.x;
   int y = pos.y;
@@ -586,22 +703,32 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 
   MDICREATESTRUCT mcs;
 
-  mcs.szClass = wxMDIChildFrameClassName;
+  mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
+                    ? wxMDIChildFrameClassName
+                    : wxMDIChildFrameClassNameNoRedraw;
   mcs.szTitle = title;
   mcs.hOwner = wxGetInstance();
-  if (x > -1) mcs.x = x;
-  else mcs.x = CW_USEDEFAULT;
+  if (x != wxDefaultCoord)
+      mcs.x = x;
+  else
+      mcs.x = CW_USEDEFAULT;
 
-  if (y > -1) mcs.y = y;
-  else mcs.y = CW_USEDEFAULT;
+  if (y != wxDefaultCoord)
+      mcs.y = y;
+  else
+      mcs.y = CW_USEDEFAULT;
 
-  if (width > -1) mcs.cx = width;
-  else mcs.cx = CW_USEDEFAULT;
+  if (width != wxDefaultCoord)
+      mcs.cx = width;
+  else
+      mcs.cx = CW_USEDEFAULT;
 
-  if (height > -1) mcs.cy = height;
-  else mcs.cy = CW_USEDEFAULT;
+  if (height != wxDefaultCoord)
+      mcs.cy = height;
+  else
+      mcs.cy = CW_USEDEFAULT;
 
-  DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN ;
+  DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
   if (style & wxMINIMIZE_BOX)
     msflags |= WS_MINIMIZEBOX;
   if (style & wxMAXIMIZE_BOX)
@@ -621,37 +748,45 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 
   mcs.lParam = 0;
 
-  DWORD Return = SendMessage((HWND) parent->GetClientWindow()->GetHWND(),
-        WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
+  wxWindowCreationHook hook(this);
 
-  //handle = (HWND)LOWORD(Return);
-  // Must be the DWORRD for WIN32. And in 16 bits, HIWORD=0 (says Microsoft)
-  m_hWnd = (WXHWND)Return;
+  m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
+                                 WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 
-  // This gets reassigned so can't be stored
-//  m_windowId = GetWindowLong((HWND) m_hWnd, GWL_ID);
+  wxAssociateWinWithHandle((HWND) GetHWND(), this);
 
-  wxWndHook = NULL;
-  wxWinHandleList->Append((long)GetHWND(), this);
-
-  SetWindowLong((HWND) GetHWND(), 0, (long)this);
-
-  wxModelessWindows.Append(this);
-  return TRUE;
+  return true;
 }
 
 wxMDIChildFrame::~wxMDIChildFrame()
 {
+    // will be destroyed by DestroyChildren() but reset them before calling it
+    // to avoid using dangling pointers if a callback comes in the meanwhile
+#if wxUSE_TOOLBAR
+    m_frameToolBar = NULL;
+#endif
+#if wxUSE_STATUSBAR
+    m_frameStatusBar = NULL;
+#endif // wxUSE_STATUSBAR
+
+    DestroyChildren();
+
+    RemoveWindowMenu(NULL, m_hMenu);
+
     MSWDestroyWindow();
+}
 
-    ResetWindowStyle(NULL);
+bool wxMDIChildFrame::Show(bool show)
+{
+    m_needsInitialShow = false;
+    return wxFrame::Show(show);
 }
 
 // Set the client size (i.e. leave the calculation of borders etc.
-// to wxWindows)
+// to wxWidgets)
 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 {
-  HWND hWnd = (HWND) GetHWND();
+  HWND hWnd = GetHwnd();
 
   RECT rect;
   ::GetClientRect(hWnd, &rect);
@@ -665,12 +800,14 @@ void wxMDIChildFrame::DoSetClientSize(int width, int height)
   int actual_width = rect2.right - rect2.left - rect.right + width;
   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 
-  if (GetStatusBar())
+#if wxUSE_STATUSBAR
+  if (GetStatusBar() && GetStatusBar()->IsShown())
   {
     int sx, sy;
     GetStatusBar()->GetSize(&sx, &sy);
     actual_height += sy;
   }
+#endif // wxUSE_STATUSBAR
 
   POINT point;
   point.x = rect2.left;
@@ -681,9 +818,10 @@ void wxMDIChildFrame::DoSetClientSize(int width, int height)
   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 
-  MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
+  MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 
-  wxSizeEvent event(wxSize(width, height), m_windowId);
+  wxSize size(width, height);
+  wxSizeEvent event(size, m_windowId);
   event.SetEventObject( this );
   GetEventHandler()->ProcessEvent(event);
 }
@@ -691,7 +829,7 @@ void wxMDIChildFrame::DoSetClientSize(int width, int height)
 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 {
   RECT rect;
-  GetWindowRect((HWND) GetHWND(), &rect);
+  GetWindowRect(GetHwnd(), &rect);
   POINT point;
   point.x = rect.left;
   point.y = rect.top;
@@ -705,279 +843,325 @@ void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
   *y = point.y;
 }
 
-void wxMDIChildFrame::SetMenuBar(wxMenuBar *menu_bar)
+void wxMDIChildFrame::InternalSetMenuBar()
 {
-  if (!menu_bar)
-  {
-    m_frameMenuBar = NULL;
-    return;
-  }
-
-  if ( menu_bar->IsAttached() )
-     return;
-
-  m_hMenu = menu_bar->Create();
-
-  if (m_frameMenuBar)
-    delete m_frameMenuBar;
-
-   wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
+    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 
-   parent->m_parentFrameActive = FALSE;
-   HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
+    InsertWindowMenu(parent->GetClientWindow(),
+                     m_hMenu, GetMDIWindowMenu(parent));
 
-   // Try to insert Window menu in front of Help, otherwise append it.
-   HMENU menu = (HMENU)m_hMenu;
-   int N = GetMenuItemCount(menu);
-   bool success = FALSE;
-   for (int i = 0; i < N; i++)
-   {
-        char buf[100];
-        int chars = GetMenuString(menu, i, buf, 100, MF_BYPOSITION);
-        if ((chars > 0) && (strcmp(buf, "&Help") == 0 ||
-                            strcmp(buf, "Help") == 0))
-        {
-           success = TRUE;
-           InsertMenu(menu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
-                      (UINT)subMenu, "&Window");
-           break;
-        }
-      }
-  if (!success)
-    AppendMenu(menu, MF_POPUP,
-                         (UINT)subMenu,
-                         "&Window");
-#ifdef __WIN32__
-  SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
-                  (WPARAM)menu,
-                  (LPARAM)subMenu);
-#else
-  SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
-                  MAKELPARAM(menu, subMenu));
-#endif
+    parent->m_parentFrameActive = false;
+}
 
-  DrawMenuBar((HWND) parent->GetHWND());
-  m_frameMenuBar = menu_bar;
-  menu_bar->Attach(this);
+WXHICON wxMDIChildFrame::GetDefaultIcon() const
+{
+    // we don't have any standard icons (any more)
+    return (WXHICON)0;
 }
 
+// ---------------------------------------------------------------------------
 // MDI operations
-void wxMDIChildFrame::Maximize()
+// ---------------------------------------------------------------------------
+
+void wxMDIChildFrame::Maximize(bool maximize)
 {
     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
     if ( parent && parent->GetClientWindow() )
-        ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIMAXIMIZE, (WPARAM) (HWND) GetHWND(), 0);
+    {
+        ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
+                      maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
+                      (WPARAM)GetHwnd(), 0);
+    }
 }
 
 void wxMDIChildFrame::Restore()
 {
     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
     if ( parent && parent->GetClientWindow() )
-        ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIRESTORE, (WPARAM) (HWND) GetHWND(), 0);
+    {
+        ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
+                      (WPARAM) GetHwnd(), 0);
+    }
 }
 
 void wxMDIChildFrame::Activate()
 {
     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
     if ( parent && parent->GetClientWindow() )
-        ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) GetHWND(), 0);
+    {
+        ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
+                      (WPARAM) GetHwnd(), 0);
+    }
 }
 
-static HWND invalidHandle = 0;
-bool wxMDIChildFrame::MSWOnSize(int x, int y, WXUINT id)
+// ---------------------------------------------------------------------------
+// MDI window proc and message handlers
+// ---------------------------------------------------------------------------
+
+WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
+                                    WXWPARAM wParam,
+                                    WXLPARAM lParam)
 {
-    HWND hwnd = GetHwnd();
-    
-    if ( !hwnd || hwnd == invalidHandle )
-    {
-        return FALSE;
-    }
-    
-    switch (id)
+    WXLRESULT rc = 0;
+    bool processed = false;
+
+    switch ( message )
     {
-        case SIZEFULLSCREEN:
-        case SIZENORMAL:
-            m_iconized = FALSE;
+        case WM_COMMAND:
+            {
+                WORD id, cmd;
+                WXHWND hwnd;
+                UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
+                              &id, &hwnd, &cmd);
+
+                processed = HandleCommand(id, cmd, (WXHWND)hwnd);
+            }
             break;
 
-        case SIZEICONIC:
-            m_iconized = TRUE;
+        case WM_GETMINMAXINFO:
+            processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
+            break;
+
+        case WM_MDIACTIVATE:
+            {
+                WXWORD act;
+                WXHWND hwndAct, hwndDeact;
+                UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
+
+                processed = HandleMDIActivate(act, hwndAct, hwndDeact);
+            }
+            // fall through
+
+        case WM_MOVE:
+            // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
+            // scrollbars if necessary
+
+            // fall through
+
+        case WM_SIZE:
+            // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
+            // things happen
+            MSWDefWindowProc(message, wParam, lParam);
+            break;
+
+        case WM_SYSCOMMAND:
+            // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
+            // the message (the base class version does not)
+            return MSWDefWindowProc(message, wParam, lParam);
+
+        case WM_WINDOWPOSCHANGING:
+            processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
             break;
     }
-    
-    if (!m_iconized)
-    {
-        // forward WM_SIZE to status bar control
-#if wxUSE_NATIVE_STATUSBAR
-        if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
-        {
-            wxSizeEvent event(wxSize(x, y), m_frameStatusBar->GetId());
-            event.SetEventObject( m_frameStatusBar );
-            
-            ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
-        }
-#endif
-        
-        PositionStatusBar();
-        PositionToolBar();
-        
-        return wxWindow::MSWOnSize(x, y, id);
-    }
-    else
-    {
-        return FALSE;
-    }
+
+    if ( !processed )
+        rc = wxFrame::MSWWindowProc(message, wParam, lParam);
+
+    return rc;
 }
 
-bool wxMDIChildFrame::MSWOnCommand(WXWORD id, WXWORD cmd, WXHWND control)
+bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 {
-//  if ((cmd == 0) && GetHWND())
-  if (GetHWND())
-  {
     // In case it's e.g. a toolbar.
-    wxWindow *win = wxFindWinFromHandle(control);
-    if (win)
-      return win->MSWCommand(cmd, id);
+    if ( hwnd )
+    {
+        wxWindow *win = wxFindWinFromHandle(hwnd);
+        if (win)
+            return win->MSWCommand(cmd, id);
+    }
 
     if (wxCurrentPopupMenu)
     {
         wxMenu *popupMenu = wxCurrentPopupMenu;
         wxCurrentPopupMenu = NULL;
         if (popupMenu->MSWCommand(cmd, id))
-            return TRUE;
+            return true;
     }
 
-    if (GetMenuBar() && GetMenuBar()->FindItemForId(id))
+    bool processed;
+    if (GetMenuBar() && GetMenuBar()->FindItem(id))
     {
-      ProcessCommand(id);
-      return TRUE;
+        processed = ProcessCommand(id);
     }
     else
-      return FALSE;
-    return TRUE;
-  }
-  else
-    return wxWindow::MSWOnCommand(id, cmd, control);
-}
+    {
+        processed = false;
+    }
 
-long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
-{
-  if (GetHWND())
-    return DefMDIChildProc((HWND) GetHWND(), (UINT) message, (WPARAM) wParam, (LPARAM) lParam);
-  else return 0;
+    return processed;
 }
 
-bool wxMDIChildFrame::MSWProcessMessage(WXMSG *msg)
+bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
+                                        WXHWND hwndAct,
+                                        WXHWND hwndDeact)
 {
-  return FALSE;
+    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
+
+    HMENU menuToSet = 0;
+
+    bool activated;
+
+    if ( m_hWnd == hwndAct )
+    {
+        activated = true;
+        parent->m_currentChild = this;
+
+        HMENU child_menu = (HMENU)GetWinMenu();
+        if ( child_menu )
+        {
+            parent->m_parentFrameActive = false;
+
+            menuToSet = child_menu;
+        }
+    }
+    else if ( m_hWnd == hwndDeact )
+    {
+        wxASSERT_MSG( parent->m_currentChild == this,
+                      wxT("can't deactivate MDI child which wasn't active!") );
+
+        activated = false;
+        parent->m_currentChild = NULL;
+
+        HMENU parent_menu = (HMENU)parent->GetWinMenu();
+
+        // activate the the parent menu only when there is no other child
+        // that has been activated
+        if ( parent_menu && !hwndAct )
+        {
+            parent->m_parentFrameActive = true;
+
+            menuToSet = parent_menu;
+        }
+    }
+    else
+    {
+        // we have nothing to do with it
+        return false;
+    }
+
+    if ( menuToSet )
+    {
+        MDISetMenu(parent->GetClientWindow(),
+                   menuToSet, GetMDIWindowMenu(parent));
+    }
+
+    wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
+    event.SetEventObject( this );
+
+    ResetWindowStyle((void *)NULL);
+
+    return GetEventHandler()->ProcessEvent(event);
 }
 
-bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
+bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
 {
-  MSG *pMsg = (MSG *)msg;
-  if (m_acceleratorTable.Ok())
-  {
-    wxFrame *parent = (wxFrame *)GetParent();
-    HWND parent_hwnd = (HWND) parent->GetHWND();
-    return (::TranslateAccelerator(parent_hwnd, (HACCEL) m_acceleratorTable.GetHACCEL(), pMsg) != 0);
-  }
+    WINDOWPOS *lpPos = (WINDOWPOS *)pos;
+#if defined(__WIN95__)
+    if (!(lpPos->flags & SWP_NOSIZE))
+    {
+        RECT rectClient;
+        DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
+        DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+        if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
+        {
+            ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
+            lpPos->x = rectClient.left;
+            lpPos->y = rectClient.top;
+            lpPos->cx = rectClient.right - rectClient.left;
+            lpPos->cy = rectClient.bottom - rectClient.top;
+        }
+#if wxUSE_TOOLBAR
+        wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
+        if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
+        {
+            pFrameWnd->GetToolBar()->Refresh();
+        }
+#endif
+    }
+#endif // Win95
 
-  return FALSE;
+    return false;
 }
 
-bool wxMDIChildFrame::MSWOnMDIActivate(long activate, WXHWND WXUNUSED(one), WXHWND WXUNUSED(two))
+bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
 {
-  wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
-  HMENU parent_menu = (HMENU) parent->GetWinMenu();
-  HMENU child_menu = (HMENU) GetWinMenu();
+    MINMAXINFO *info = (MINMAXINFO *)mmInfo;
 
-  if (activate)
-  {
-//    m_active = TRUE;
-    parent->m_currentChild = this;
-    if (child_menu)
+    // let the default window proc calculate the size of MDI children
+    // frames because it is based on the size of the MDI client window,
+    // not on the values specified in wxWindow m_max variables
+    bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
+
+    int minWidth = GetMinWidth(),
+        minHeight = GetMinHeight();
+
+    // but allow GetSizeHints() to set the min size
+    if ( minWidth != -1 )
     {
-      parent->m_parentFrameActive = FALSE;
-      HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
-#ifdef __WIN32__
-      ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
-                    (WPARAM)child_menu,
-                    (LPARAM)subMenu);
-#else
-      ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
-                  MAKELONG(child_menu, subMenu));
-#endif
+        info->ptMinTrackSize.x = minWidth;
 
-      ::DrawMenuBar((HWND) parent->GetHWND());
+        processed = true;
     }
-    wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
-    event.SetEventObject( this );
-    return GetEventHandler()->ProcessEvent(event);
-  }
-  else
-  {
-    if (parent->m_currentChild == this)
-      parent->m_currentChild = NULL;
 
-    wxActivateEvent event(wxEVT_ACTIVATE, FALSE, m_windowId);
-    event.SetEventObject( this );
-    if ( GetEventHandler()->ProcessEvent(event) )
-        return TRUE;
-
-//    m_active = FALSE;
-    if (parent_menu)
+    if ( minHeight != -1 )
     {
-      parent->m_parentFrameActive = TRUE;
-      HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
-#ifdef __WIN32__
-      ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
-                    (WPARAM)parent_menu,
-                    (LPARAM)subMenu);
-#else
-      ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
-                  MAKELONG(parent_menu, subMenu));
-#endif
+        info->ptMinTrackSize.y = minHeight;
 
-      ::DrawMenuBar((HWND) parent->GetHWND());
+        processed = true;
     }
-  }
-  bool flag = (activate != 0);
-  wxActivateEvent event(wxEVT_ACTIVATE, flag, m_windowId);
-  event.SetEventObject( this );
-  return GetEventHandler()->ProcessEvent(event);
+
+    return processed;
+}
+
+// ---------------------------------------------------------------------------
+// MDI specific message translation/preprocessing
+// ---------------------------------------------------------------------------
+
+WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+{
+    return DefMDIChildProc(GetHwnd(),
+                           (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
 }
 
+bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
+{
+    return wxFrame::MSWTranslateMessage(msg);
+}
+
+// ---------------------------------------------------------------------------
+// misc
+// ---------------------------------------------------------------------------
+
 void wxMDIChildFrame::MSWDestroyWindow()
 {
-  MSWDetachWindowMenu();
-  invalidHandle = (HWND) GetHWND();
+    invalidHandle = GetHwnd();
 
-  wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
+    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 
-  // Must make sure this handle is invalidated (set to NULL)
-  // since all sorts of things could happen after the
-  // child client is destroyed, but before the wxFrame is
-  // destroyed.
+    // Must make sure this handle is invalidated (set to NULL) since all sorts
+    // of things could happen after the child client is destroyed, but before
+    // the wxFrame is destroyed.
 
-  HWND oldHandle = (HWND)GetHWND();
-#ifdef __WIN32__
-  SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (WPARAM)oldHandle, (LPARAM)0);
-#else
-  SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (HWND)oldHandle, 0);
-#endif
-  invalidHandle = 0;
+    HWND oldHandle = (HWND)GetHWND();
+    SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
+                (WPARAM)oldHandle, 0);
 
-  if (m_hMenu)
-  {
-    ::DestroyMenu((HMENU) m_hMenu);
-    m_hMenu = 0;
-  }
-  m_hWnd = 0;
+    if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
+        ResetWindowStyle((void*) NULL);
+
+    invalidHandle = 0;
+
+    if (m_hMenu)
+    {
+        ::DestroyMenu((HMENU) m_hMenu);
+        m_hMenu = 0;
+    }
+    wxRemoveHandleAssociation(this);
+    m_hWnd = 0;
 }
 
-// Change the client window's extended style so we don't
-// get a client edge style when a child is maximised (a double
-// border looks silly.)
+// Change the client window's extended style so we don't get a client edge
+// style when a child is maximised (a double border looks silly.)
 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
 {
 #if defined(__WIN95__)
@@ -986,116 +1170,92 @@ bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
     if (!pChild || (pChild == this))
     {
-        DWORD dwStyle = ::GetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE);
-        DWORD dwThisStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
+        HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
+        DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
+
+        // we want to test whether there is a maximized child, so just set
+        // dwThisStyle to 0 if there is no child at all
+        DWORD dwThisStyle = pChild
+            ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
         DWORD dwNewStyle = dwStyle;
-        if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
+        if ( dwThisStyle & WS_MAXIMIZE )
             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
         else
             dwNewStyle |= WS_EX_CLIENTEDGE;
 
         if (dwStyle != dwNewStyle)
         {
-            ::RedrawWindow((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
-            ::SetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE, dwNewStyle);
-            ::SetWindowPos((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, 0, 0, 0, 0,
-                SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOCOPYBITS);
+            // force update of everything
+            ::RedrawWindow(hwndClient, NULL, NULL,
+                           RDW_INVALIDATE | RDW_ALLCHILDREN);
+            ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
+            ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
+                           SWP_FRAMECHANGED | SWP_NOACTIVATE |
+                           SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
+                           SWP_NOCOPYBITS);
             if (rect)
-                ::GetClientRect((HWND) pFrameWnd->GetClientWindow()->GetHWND(), rect);
-            return TRUE;
-        }
-    }
-    return FALSE;
-#else
-    return FALSE;
-#endif
-}
+                ::GetClientRect(hwndClient, rect);
 
-bool wxMDIChildFrame::MSWOnWindowPosChanging(void *pos)
-{
-    WINDOWPOS *lpPos = (WINDOWPOS *)pos;
-#if defined(__WIN95__)
-    if (!(lpPos->flags & SWP_NOSIZE))
-    {
-        RECT rectClient;
-        DWORD dwExStyle = ::GetWindowLong((HWND) GetHWND(), GWL_EXSTYLE);
-        DWORD dwStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
-        if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
-        {
-            ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
-            lpPos->x = rectClient.left;
-            lpPos->y = rectClient.top;
-            lpPos->cx = rectClient.right - rectClient.left;
-            lpPos->cy = rectClient.bottom - rectClient.top;
-        }
-        wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
-        if (pFrameWnd && pFrameWnd->GetToolBar())
-        {
-            pFrameWnd->GetToolBar()->Refresh();
+            return true;
         }
     }
-#endif
+#endif // Win95
 
-    return FALSE;
+    return false;
 }
 
-// Client window
-wxMDIClientWindow::wxMDIClientWindow()
-{
-    m_scrollX = 0;
-    m_scrollY = 0;
-}
-
-wxMDIClientWindow::~wxMDIClientWindow()
-{
-}
+// ===========================================================================
+// wxMDIClientWindow: the window of predefined (by Windows) class which
+// contains the child frames
+// ===========================================================================
 
 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
 {
-  m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
+    m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
 
-  CLIENTCREATESTRUCT ccs;
-  m_windowStyle = style;
-  m_parent = parent;
+    CLIENTCREATESTRUCT ccs;
+    m_windowStyle = style;
+    m_parent = parent;
 
-  ccs.hWindowMenu = (HMENU) parent->GetWindowMenu();
-  ccs.idFirstChild = wxFIRST_MDI_CHILD;
+    ccs.hWindowMenu = GetMDIWindowMenu(parent);
+    ccs.idFirstChild = wxFIRST_MDI_CHILD;
 
-  DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN ;
-  if ( parent->GetWindowStyleFlag() & wxHSCROLL )
-    msStyle |= WS_HSCROLL;
-  if ( parent->GetWindowStyleFlag() & wxVSCROLL )
-    msStyle |= WS_VSCROLL ;
+    DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
+                    WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
+
+    if ( style & wxHSCROLL )
+        msStyle |= WS_HSCROLL;
+    if ( style & wxVSCROLL )
+        msStyle |= WS_VSCROLL;
 
 #if defined(__WIN95__)
-  DWORD exStyle = WS_EX_CLIENTEDGE;
+    DWORD exStyle = WS_EX_CLIENTEDGE;
 #else
-  DWORD exStyle = 0;
+    DWORD exStyle = 0;
 #endif
 
-  wxWndHook = this;
-  m_hWnd = (WXHWND) ::CreateWindowEx(exStyle, "mdiclient", NULL,
-                msStyle, 0, 0, 0, 0, (HWND) parent->GetHWND(), NULL,
-                wxGetInstance(), (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
-  SubclassWin(m_hWnd);
-  wxWndHook = NULL;
+    wxWindowCreationHook hook(this);
+    m_hWnd = (WXHWND)::CreateWindowEx
+                       (
+                        exStyle,
+                        wxT("MDICLIENT"),
+                        NULL,
+                        msStyle,
+                        0, 0, 0, 0,
+                        GetWinHwnd(parent),
+                        NULL,
+                        wxGetInstance(),
+                        (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
+    if ( !m_hWnd )
+    {
+        wxLogLastError(wxT("CreateWindowEx(MDI client)"));
 
-  return (m_hWnd != 0) ;
-}
+        return false;
+    }
 
-// Window procedure: here for debugging purposes
-long wxMDIClientWindow::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
-{
-    return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
-//    return MSWDefWindowProc(nMsg, wParam, lParam);
-}
+    SubclassWin(m_hWnd);
 
-long wxMDIClientWindow::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
-{
-    if ( MSWGetOldWndProc() != 0)
-          return ::CallWindowProc(CASTWNDPROC MSWGetOldWndProc(), (HWND) GetHWND(), (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
-    else
-        return ::DefWindowProc((HWND) m_hWnd, (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
+    return true;
 }
 
 // Explicitly call default scroll behaviour
@@ -1112,5 +1272,181 @@ void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
     else
         m_scrollY = event.GetPosition(); // Always returns zero!
 
-    Default();
+    event.Skip();
+}
+
+void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+{
+    // Try to fix a problem whereby if you show an MDI child frame, then reposition the
+    // client area, you can end up with a non-refreshed portion in the client window
+    // (see OGL studio sample). So check if the position is changed and if so,
+    // redraw the MDI child frames.
+
+    wxPoint oldPos = GetPosition();
+
+    wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+
+    wxPoint newPos = GetPosition();
+
+    if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
+    {
+        if (GetParent())
+        {
+            wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
+            while (node)
+            {
+                wxWindow *child = node->GetData();
+                if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
+                {
+                   ::RedrawWindow(GetHwndOf(child),
+                                  NULL,
+                                  NULL,
+                                  RDW_FRAME |
+                                  RDW_ALLCHILDREN |
+                                  RDW_INVALIDATE);
+                }
+                node = node->GetNext();
+            }
+        }
+    }
+}
+
+void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
+{
+    // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
+    // in flicker e.g. when the frame contained controls with non-trivial
+    // layout. Since 2.5.3, the frame is created hidden as all other top level
+    // windows. In order to maintain backward compatibility, the frame is shown
+    // in OnIdle, unless Show(false) was called by the programmer before.
+    if ( m_needsInitialShow )
+    {
+        Show(true);
+    }
+
+    // MDI child frames get their WM_SIZE when they're constructed but at this
+    // moment they don't have any children yet so all child windows will be
+    // positioned incorrectly when they are added later - to fix this, we
+    // generate an artificial size event here
+    if ( m_needsResize )
+    {
+        m_needsResize = false; // avoid any possibility of recursion
+
+        SendSizeEvent();
+    }
+
+    event.Skip();
 }
+
+// ---------------------------------------------------------------------------
+// non member functions
+// ---------------------------------------------------------------------------
+
+static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
+{
+    ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
+#ifdef __WIN32__
+                  (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
+#else
+                  0, MAKELPARAM(hmenuFrame, hmenuWindow)
+#endif
+                 );
+
+    // update menu bar of the parent window
+    wxWindow *parent = win->GetParent();
+    wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
+
+    ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
+
+    ::DrawMenuBar(GetWinHwnd(parent));
+}
+
+static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
+{
+    // Try to insert Window menu in front of Help, otherwise append it.
+    HMENU hmenu = (HMENU)menu;
+
+    if (subMenu)
+    {
+        int N = GetMenuItemCount(hmenu);
+        bool success = false;
+        for ( int i = 0; i < N; i++ )
+        {
+            wxChar buf[256];
+            int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
+            if ( chars == 0 )
+            {
+                wxLogLastError(wxT("GetMenuString"));
+
+                continue;
+            }
+
+            if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Help")) )
+            {
+                success = true;
+                ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
+                             (UINT)subMenu, _("&Window"));
+                break;
+            }
+        }
+
+        if ( !success )
+        {
+            ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
+        }
+    }
+
+    MDISetMenu(win, hmenu, subMenu);
+}
+
+static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
+{
+    HMENU hMenu = (HMENU)menu;
+
+    if ( hMenu )
+    {
+        wxChar buf[1024];
+
+        int N = ::GetMenuItemCount(hMenu);
+        for ( int i = 0; i < N; i++ )
+        {
+            if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
+            {
+                // Ignore successful read of menu string with length 0 which
+                // occurs, for example, for a maximized MDI childs system menu
+                if ( ::GetLastError() != 0 )
+                {
+                    wxLogLastError(wxT("GetMenuString"));
+                }
+
+                continue;
+            }
+
+            if ( wxStrcmp(buf, _("&Window")) == 0 )
+            {
+                if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
+                {
+                    wxLogLastError(wxT("RemoveMenu"));
+                }
+
+                break;
+            }
+        }
+    }
+
+    if ( win )
+    {
+        // we don't change the windows menu, but we update the main one
+        MDISetMenu(win, hMenu, NULL);
+    }
+}
+
+static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
+                              WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
+{
+    *activate = true;
+    *hwndAct = (WXHWND)lParam;
+    *hwndDeact = (WXHWND)wParam;
+}
+
+#endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)
+