only set parent frame ontop when the current frame being destructed is active

[wxWidgets.git] / src / msw / notebook.cpp

diff --git a/src/msw/notebook.cpp b/src/msw/notebook.cpp
index 882cd41f456b4156447cae28794a6519c62192b1..67cc03440b9f203b1cc705dd34c00c84126652a1 100644 (file)
--- a/src/msw/notebook.cpp
+++ b/src/msw/notebook.cpp
@@ -2,35 +2,22 @@
 // Name:        msw/notebook.cpp
 // Purpose:     implementation of wxNotebook
 // Author:      Vadim Zeitlin
 // Name:        msw/notebook.cpp
 // Purpose:     implementation of wxNotebook
 // Author:      Vadim Zeitlin

-// Modified by: 
+// Modified by:

 // Created:     11.06.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Licence:     wxWindows license
 ///////////////////////////////////////////////////////////////////////////////
 
 // Created:     11.06.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Licence:     wxWindows license
 ///////////////////////////////////////////////////////////////////////////////
 

-// TODO: 
-// 1) keyboard interface for changing pages ([Shift]+Ctrl-Tab)
-// 2) using OnSize() for showing pages for the first time works, but it surely
-//    us ugly
-// 3) I'm not sure that setting fonts works
-
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------

 #ifdef __GNUG__
 #ifdef __GNUG__

-  #pragma implementation "notebook.h"
+#pragma implementation "notebook.h"

 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-  #pragma hdrstop
+#pragma hdrstop

 #endif
 
 // wxWindows
 #endif
 
 // wxWindows


@@ -40,18 +27,28 @@
 
 #include  <wx/log.h>
 #include  <wx/imaglist.h>
 
 #include  <wx/log.h>
 #include  <wx/imaglist.h>

+#include  <wx/event.h>
+#include  <wx/control.h>

 #include  <wx/notebook.h>
 
 #include  <wx/msw/private.h>
 
 // Windows standard headers
 #ifndef   __WIN95__
 #include  <wx/notebook.h>
 
 #include  <wx/msw/private.h>
 
 // Windows standard headers
 #ifndef   __WIN95__

-  #error  "wxNotebook is not supported under Windows 3.1"
+  #error  "wxNotebook is only supported Windows 95 and above"

 #endif    //Win95
 
 #endif    //Win95
 

+#include  <windowsx.h>  // for SetWindowFont
+
+#ifndef __TWIN32__

 #ifdef __GNUWIN32__
 #ifdef __GNUWIN32__

+#ifndef wxUSE_NORLANDER_HEADERS

   #include "wx/msw/gnuwin32/extra.h"
   #include "wx/msw/gnuwin32/extra.h"

-#else   //!GnuWin32
+#endif
+#endif
+#endif
+
+#if !defined(__GNUWIN32__) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)

   #include <commctrl.h>
 #endif
 
   #include <commctrl.h>
 #endif
 


@@ -65,6 +62,23 @@
 // hide the ugly cast
 #define m_hwnd    (HWND)GetHWND()
 
 // hide the ugly cast
 #define m_hwnd    (HWND)GetHWND()
 

+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// This is a work-around for missing defines in gcc-2.95 headers
+#ifndef TCS_RIGHT
+    #define TCS_RIGHT       0x0002
+#endif
+
+#ifndef TCS_VERTICAL
+    #define TCS_VERTICAL    0x0080
+#endif
+
+#ifndef TCS_BOTTOM
+    #define TCS_BOTTOM      TCS_RIGHT
+#endif
+

 // ----------------------------------------------------------------------------
 // event table
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // event table
 // ----------------------------------------------------------------------------


@@ -74,12 +88,14 @@
     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
 
     EVT_SIZE(wxNotebook::OnSize)
     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
 
     EVT_SIZE(wxNotebook::OnSize)

+

     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
     EVT_SET_FOCUS(wxNotebook::OnSetFocus)

+

     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
   END_EVENT_TABLE()
 
   IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
   END_EVENT_TABLE()
 
   IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)

-  IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
+  IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)

 #endif
 
 // ============================================================================
 #endif
 
 // ============================================================================


@@ -125,49 +141,49 @@ bool wxNotebook::Create(wxWindow *parent,
                         const wxString& name)
 {
   // base init
                         const wxString& name)
 {
   // base init

-  SetName(name);
-  SetParent(parent);
-
-  m_windowId = id == -1 ? NewControlId() : id;
+  if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
+      return FALSE;

 
   // colors and font
   m_backgroundColour = wxColour(GetSysColor(COLOR_BTNFACE));
   m_foregroundColour = *wxBLACK ;
 
 
   // colors and font
   m_backgroundColour = wxColour(GetSysColor(COLOR_BTNFACE));
   m_foregroundColour = *wxBLACK ;
 

-  m_defaultForegroundColour = *wxBLACK ;
-  m_defaultBackgroundColour = wxColour(GetSysColor(COLOR_BTNFACE));
-

   // style
   // style

-  m_windowStyle = style;
+  m_windowStyle = style | wxTAB_TRAVERSAL;

 
   long tabStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP | TCS_TABS;
 
   long tabStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP | TCS_TABS;

+
+  if (m_windowStyle & wxCLIP_CHILDREN)
+    tabStyle |= WS_CLIPCHILDREN;

   if ( m_windowStyle & wxTC_MULTILINE )
     tabStyle |= TCS_MULTILINE;
   if ( m_windowStyle & wxBORDER )
     tabStyle &= WS_BORDER;
   if ( m_windowStyle & wxTC_MULTILINE )
     tabStyle |= TCS_MULTILINE;
   if ( m_windowStyle & wxBORDER )
     tabStyle &= WS_BORDER;

-
-  // create the tab control.
-  m_hWnd = (WXHWND)CreateWindowEx
-    (
-      0,                                      // extended style
-      WC_TABCONTROL,                          // class name for the tab control
-      "",                                     // no caption
-      tabStyle,                               // style
-      pos.x, pos.y, size.x, size.y,           // size and position
-      (HWND)parent->GetHWND(),                // parent window
-      (HMENU)m_windowId,                      // child id
-      wxGetInstance(),                        // current instance
-      NULL                                    // no class data
-    );
-
-  if ( m_hWnd == 0 ) {
-    wxLogSysError("Can't create the notebook control");
+  if (m_windowStyle & wxNB_FIXEDWIDTH)
+    tabStyle |= TCS_FIXEDWIDTH ;
+  if (m_windowStyle & wxNB_BOTTOM)
+    tabStyle |= TCS_RIGHT;
+  if (m_windowStyle & wxNB_LEFT)
+    tabStyle |= TCS_VERTICAL;
+  if (m_windowStyle & wxNB_RIGHT)
+    tabStyle |= TCS_VERTICAL|TCS_RIGHT;
+        
+
+  if ( !MSWCreate(GetId(), GetParent(), WC_TABCONTROL,
+                  this, NULL, pos.x, pos.y, size.x, size.y,
+                  tabStyle, NULL, 0) )
+  {

     return FALSE;
   }
 
     return FALSE;
   }
 

-  if ( parent != NULL ) 
+  // Not all compilers recognise SetWindowFont
+  ::SendMessage(GetHwnd(), WM_SETFONT,
+                (WPARAM)::GetStockObject(DEFAULT_GUI_FONT), TRUE);
+
+
+  if ( parent != NULL )

     parent->AddChild(this);
     parent->AddChild(this);

-  
+

   SubclassWin(m_hWnd);
 
   return TRUE;
   SubclassWin(m_hWnd);
 
   return TRUE;


@@ -196,7 +212,7 @@ int wxNotebook::GetRowCount() const
 
 int wxNotebook::SetSelection(int nPage)
 {
 
 int wxNotebook::SetSelection(int nPage)
 {

-  wxASSERT( IS_VALID_PAGE(nPage) );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );

 
   ChangePage(m_nSelection, nPage);
 
 
   ChangePage(m_nSelection, nPage);
 


@@ -215,20 +231,20 @@ void wxNotebook::AdvanceSelection(bool bForward)
 
 bool wxNotebook::SetPageText(int nPage, const wxString& strText)
 {
 
 bool wxNotebook::SetPageText(int nPage, const wxString& strText)
 {

-  wxASSERT( IS_VALID_PAGE(nPage) );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );

 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_TEXT;
 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_TEXT;

-  tcItem.pszText = (char *)strText.c_str();
+  tcItem.pszText = (wxChar *)strText.c_str();

 
   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 }
 
 wxString wxNotebook::GetPageText(int nPage) const
 {
 
   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 }
 
 wxString wxNotebook::GetPageText(int nPage) const
 {

-  wxASSERT( IS_VALID_PAGE(nPage) );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), _T(""), _T("notebook page out of range") );

 
 

-  char buf[256];
+  wxChar buf[256];

   TC_ITEM tcItem;
   tcItem.mask = TCIF_TEXT;
   tcItem.pszText = buf;
   TC_ITEM tcItem;
   tcItem.mask = TCIF_TEXT;
   tcItem.pszText = buf;


@@ -243,7 +259,7 @@ wxString wxNotebook::GetPageText(int nPage) const
 
 int wxNotebook::GetPageImage(int nPage) const
 {
 
 int wxNotebook::GetPageImage(int nPage) const
 {

-  wxASSERT( IS_VALID_PAGE(nPage) );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );

 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_IMAGE;
 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_IMAGE;


@@ -253,7 +269,7 @@ int wxNotebook::GetPageImage(int nPage) const
 
 bool wxNotebook::SetPageImage(int nPage, int nImage)
 {
 
 bool wxNotebook::SetPageImage(int nPage, int nImage)
 {

-  wxASSERT( IS_VALID_PAGE(nPage) );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );

 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_IMAGE;
 
   TC_ITEM tcItem;
   tcItem.mask = TCIF_IMAGE;


@@ -263,11 +279,19 @@ bool wxNotebook::SetPageImage(int nPage, int nImage)
 }
 
 void wxNotebook::SetImageList(wxImageList* imageList)
 }
 
 void wxNotebook::SetImageList(wxImageList* imageList)

-{ 
+{

   m_pImageList = imageList;
   TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
 }
 
   m_pImageList = imageList;
   TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
 }
 

+
+// Windows-only at present. Also, you must use the wxNB_FIXEDWIDTH
+// style.
+void wxNotebook::SetTabSize(const wxSize& sz)
+{
+    ::SendMessage(GetHwnd(), TCM_SETITEMSIZE, 0, MAKELPARAM(sz.x, sz.y));
+}
+

 // ----------------------------------------------------------------------------
 // wxNotebook operations
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxNotebook operations
 // ----------------------------------------------------------------------------


@@ -275,21 +299,42 @@ void wxNotebook::SetImageList(wxImageList* imageList)
 // remove one page from the notebook
 bool wxNotebook::DeletePage(int nPage)
 {
 // remove one page from the notebook
 bool wxNotebook::DeletePage(int nPage)
 {

-  wxCHECK( IS_VALID_PAGE(nPage), FALSE );
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
+
+  if ( m_nSelection == nPage ) {
+      // advance selection backwards - the page being deleted shouldn't be left
+      // selected
+      AdvanceSelection(FALSE);
+  }

 
   TabCtrl_DeleteItem(m_hwnd, nPage);
 
   delete m_aPages[nPage];
   m_aPages.Remove(nPage);
 
 
   TabCtrl_DeleteItem(m_hwnd, nPage);
 
   delete m_aPages[nPage];
   m_aPages.Remove(nPage);
 

+  if ( m_aPages.IsEmpty() ) {
+      // no selection if the notebook became empty
+      m_nSelection = -1;
+  }
+
+  return TRUE;
+}
+
+// remove one page from the notebook, without deleting
+bool wxNotebook::RemovePage(int nPage)
+{
+  wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
+
+  TabCtrl_DeleteItem(m_hwnd, nPage);
+
+  m_aPages.Remove(nPage);
+

   return TRUE;
 }
 
 // remove all pages
 bool wxNotebook::DeleteAllPages()
 {
   return TRUE;
 }
 
 // remove all pages
 bool wxNotebook::DeleteAllPages()
 {

-  TabCtrl_DeleteAllItems(m_hwnd);
-

   int nPageCount = GetPageCount();
   int nPage;
   for ( nPage = 0; nPage < nPageCount; nPage++ )
   int nPageCount = GetPageCount();
   int nPage;
   for ( nPage = 0; nPage < nPageCount; nPage++ )


@@ -297,6 +342,8 @@ bool wxNotebook::DeleteAllPages()
 
   m_aPages.Clear();
 
 
   m_aPages.Clear();
 

+  TabCtrl_DeleteAllItems(m_hwnd);
+

   return TRUE;
 }
 
   return TRUE;
 }
 


@@ -319,30 +366,58 @@ bool wxNotebook::InsertPage(int nPage,
   wxASSERT( pPage != NULL );
   wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), FALSE );
 
   wxASSERT( pPage != NULL );
   wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), FALSE );
 

-  // add the tab to the control
+  // do add the tab to the control
+
+  // init all fields to 0

   TC_ITEM tcItem;
   TC_ITEM tcItem;

-  tcItem.mask    = TCIF_TEXT | TCIF_IMAGE;
-  tcItem.pszText = (char *)strText.c_str();
-  tcItem.iImage  = imageId;
+  memset(&tcItem, 0, sizeof(tcItem));
+
+  if ( imageId != -1 )
+  {
+    tcItem.mask |= TCIF_IMAGE;
+    tcItem.iImage  = imageId;
+  }
+
+  if ( !strText.IsEmpty() )
+  {
+    tcItem.mask |= TCIF_TEXT;
+    tcItem.pszText = (wxChar *)strText.c_str(); // const_cast
+  }

 
   if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 ) {
 
   if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 ) {

-    wxLogError("Can't create the notebook page '%s'.", strText.c_str());
+    wxLogError(_T("Can't create the notebook page '%s'."), strText.c_str());
+

     return FALSE;
   }
 
     return FALSE;
   }
 

+  // if the inserted page is before the selected one, we must update the
+  // index of the selected page
+  if ( nPage <= m_nSelection )
+  {
+    // one extra page added
+    m_nSelection++;
+  }
+

   // save the pointer to the page
   m_aPages.Insert(pPage, nPage);
 
   // save the pointer to the page
   m_aPages.Insert(pPage, nPage);
 

-  // some page must be selected: either this one or the first one if there is 
+  // don't show pages by default (we'll need to adjust their size first)
+  HWND hwnd = GetWinHwnd(pPage);
+  SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);
+
+  // this updates internal flag too - otherwise it will get out of sync
+  pPage->Show(FALSE);
+
+  // some page should be selected: either this one or the first one if there is

   // still no selection
   // still no selection

+  int selNew = -1;

   if ( bSelect )
   if ( bSelect )

-    m_nSelection = nPage;
+    selNew = nPage;

   else if ( m_nSelection == -1 )
   else if ( m_nSelection == -1 )

-    m_nSelection = 0;
+    selNew = 0;

 
 

-  // don't show pages by default (we'll need to adjust their size first)
-  HWND hwnd = (HWND)pPage->GetHWND();
-  SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);
+  if ( selNew != -1 )
+    SetSelection(selNew);

 
   return TRUE;
 }
 
   return TRUE;
 }


@@ -351,23 +426,21 @@ bool wxNotebook::InsertPage(int nPage,
 // wxNotebook callbacks
 // ----------------------------------------------------------------------------
 
 // wxNotebook callbacks
 // ----------------------------------------------------------------------------
 

-// @@@ OnSize() is used for setting the font when it's called for the first
-//     time because doing it in ::Create() doesn't work (for unknown reasons)

 void wxNotebook::OnSize(wxSizeEvent& event)
 {
 void wxNotebook::OnSize(wxSizeEvent& event)
 {

-  static bool s_bFirstTime = TRUE;
-  if ( s_bFirstTime ) {
-    SendMessage((HWND)m_hwnd, WM_SETFONT,
-                (WPARAM)GetStockObject(DEFAULT_GUI_FONT),
-                MAKELPARAM(TRUE, 0));
-    s_bFirstTime = FALSE;
-  }
+  // fit the notebook page to the tab control's display area
+  RECT rc;
+  rc.left = rc.top = 0;
+  GetSize((int *)&rc.right, (int *)&rc.bottom);

 
 

-  // emulate page change (it's esp. important to do it first time because
-  // otherwise our page would stay invisible)
-  int nSel = m_nSelection;
-  m_nSelection = -1;
-  SetSelection(nSel);
+  TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
+  size_t nCount = m_aPages.Count();
+  for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
+    wxNotebookPage *pPage = m_aPages[nPage];
+    pPage->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
+    if ( pPage->GetAutoLayout() )
+      pPage->Layout();
+  }

 
   event.Skip();
 }
 
   event.Skip();
 }


@@ -376,7 +449,21 @@ void wxNotebook::OnSelChange(wxNotebookEvent& event)
 {
   // is it our tab control?
   if ( event.GetEventObject() == this )
 {
   // is it our tab control?
   if ( event.GetEventObject() == this )

-    ChangePage(event.GetOldSelection(), event.GetSelection());
+  {
+      int sel = event.GetOldSelection();
+      if ( sel != -1 )
+        m_aPages[sel]->Show(FALSE);
+      
+      sel = event.GetSelection();
+      if ( sel != -1 )
+      {
+        wxNotebookPage *pPage = m_aPages[sel];
+        pPage->Show(TRUE);
+        pPage->SetFocus();
+      }
+      
+      m_nSelection = sel;
+  }

 
   // we want to give others a chance to process this message as well
   event.Skip();
 
   // we want to give others a chance to process this message as well
   event.Skip();


@@ -401,7 +488,7 @@ void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
     // pass to the parent
     if ( GetParent() ) {
       event.SetCurrentFocus(this);
     // pass to the parent
     if ( GetParent() ) {
       event.SetCurrentFocus(this);

-      GetParent()->ProcessEvent(event);
+      GetParent()->GetEventHandler()->ProcessEvent(event);

     }
   }
 }
     }
   }
 }


@@ -409,15 +496,23 @@ void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 // ----------------------------------------------------------------------------
 // wxNotebook base class virtuals
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxNotebook base class virtuals
 // ----------------------------------------------------------------------------

-void wxNotebook::Command(wxCommandEvent& event)
+
+// override these 2 functions to do nothing: everything is done in OnSize
+
+void wxNotebook::SetConstraintSizes(bool /* recurse */)

 {
 {

-  wxFAIL_MSG("wxNotebook::Command not implemented");
+  // don't set the sizes of the pages - their correct size is not yet known
+  wxControl::SetConstraintSizes(FALSE);
+}
+
+bool wxNotebook::DoPhase(int /* nPhase */)
+{
+  return TRUE;

 }
 
 }
 

-bool wxNotebook::MSWNotify(WXWPARAM wParam, WXLPARAM lParam)
+bool wxNotebook::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM* result)

 {
 {

-  wxNotebookEvent event(wxEVT_NULL, m_windowId, 
-                        TabCtrl_GetCurSel(m_hwnd), m_nSelection);
+  wxNotebookEvent event(wxEVT_NULL, m_windowId);

 
   NMHDR* hdr = (NMHDR *)lParam;
   switch ( hdr->code ) {
 
   NMHDR* hdr = (NMHDR *)lParam;
   switch ( hdr->code ) {


@@ -429,52 +524,56 @@ bool wxNotebook::MSWNotify(WXWPARAM wParam, WXLPARAM lParam)
       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
       break;
 
       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
       break;
 

-    default :
-      return wxControl::MSWNotify(wParam, lParam);
+    default:
+      return wxControl::MSWOnNotify(idCtrl, lParam, result);

   }
 
   }
 

+  event.SetSelection(TabCtrl_GetCurSel(m_hwnd));
+  event.SetOldSelection(m_nSelection);

   event.SetEventObject(this);
   event.SetEventObject(this);

-  event.SetInt(LOWORD(wParam));
+  event.SetInt(idCtrl);

 
 

-  return ProcessEvent(event);
+  bool processed = GetEventHandler()->ProcessEvent(event);
+  *result = !event.IsAllowed();
+  return processed;

 }
 
 // ----------------------------------------------------------------------------
 // wxNotebook helper functions
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // wxNotebook helper functions
 // ----------------------------------------------------------------------------
 

-// hide the currently active panel and show the new one
+// generate the page changing and changed events, hide the currently active
+// panel and show the new one

 void wxNotebook::ChangePage(int nOldSel, int nSel)
 {
 void wxNotebook::ChangePage(int nOldSel, int nSel)
 {

-  wxASSERT( nOldSel != nSel ); // impossible
+  // MT-FIXME should use a real semaphore
+  static bool s_bInsideChangePage = FALSE;

 
 

-  if ( nOldSel != -1 ) {
-    m_aPages[nOldSel]->Show(FALSE);
-  }
+  // when we call ProcessEvent(), our own OnSelChange() is called which calls
+  // this function - break the infinite loop
+  if ( s_bInsideChangePage )
+    return;
+
+  // it's not an error (the message may be generated by the tab control itself)
+  // and it may happen - just do nothing
+  if ( nSel == nOldSel )
+    return;

 
 

-  wxNotebookPage *pPage = m_aPages[nSel];
-  FitPage(pPage);
-  pPage->Show(TRUE);
+  s_bInsideChangePage = TRUE;

 
 

-  // set focus to the currently selected page
-  wxWindow *win = m_aPages[nSel];
-  if ( win->IsKindOf(CLASSINFO(wxPanel)) ) {
-    wxList *children = win->GetChildren();
-    if ( children->First() != NULL );
-      win = (wxWindow *)children->First()->Data();
+  wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_windowId);
+  event.SetSelection(nSel);
+  event.SetOldSelection(nOldSel);
+  event.SetEventObject(this);
+  if ( ProcessEvent(event) && !event.IsAllowed() )
+  {
+    // program doesn't allow the page change
+    s_bInsideChangePage = FALSE;
+    return;

   }
   }

-  win->SetFocus();

 
 

-  m_nSelection = nSel;
-}
+  event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
+  ProcessEvent(event);

 
 

-// fit the notebook page to the tab control's display area
-void wxNotebook::FitPage(wxNotebookPage *pPage)
-{
-  RECT rc;
-  rc.left = rc.top = 0;
-  GetSize((int *)&rc.right, (int *)&rc.bottom);
-
-  TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
-  pPage->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
-}
\ No newline at end of file
+  s_bInsideChangePage = FALSE;
+}