extending calculation of visible region

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

diff --git a/src/generic/notebook.cpp b/src/generic/notebook.cpp
index a398e2a5467f0d59f6d4134dd8f70300a3c2469e..756369436e038ba036d1e2d35e603ab049b60560 100644 (file)
--- a/src/generic/notebook.cpp
+++ b/src/generic/notebook.cpp
@@ -16,10 +16,14 @@
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma implementation "notebook.h"
 #endif
 
 #pragma implementation "notebook.h"
 #endif
 

+#ifdef __VMS
+#pragma message disable unscomzer
+#endif
+

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


@@ -33,6 +37,7 @@
 #include  "wx/generic/imaglist.h"
 #include  "wx/notebook.h"
 #include  "wx/dcclient.h"
 #include  "wx/generic/imaglist.h"
 #include  "wx/notebook.h"
 #include  "wx/dcclient.h"

+#include  "wx/generic/tabg.h"

 
 // ----------------------------------------------------------------------------
 // macros
 
 // ----------------------------------------------------------------------------
 // macros


@@ -45,7 +50,9 @@
 // event table
 // ----------------------------------------------------------------------------
 
 // event table
 // ----------------------------------------------------------------------------
 

-#if !USE_SHARED_LIBRARIES
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
+

 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
     EVT_SIZE(wxNotebook::OnSize)
 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
     EVT_SIZE(wxNotebook::OnSize)


@@ -53,17 +60,36 @@ BEGIN_EVENT_TABLE(wxNotebook, wxControl)
     EVT_MOUSE_EVENTS(wxNotebook::OnMouseEvent)
     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
     EVT_MOUSE_EVENTS(wxNotebook::OnMouseEvent)
     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)

-//    EVT_IDLE(wxNotebook::OnIdle)

 END_EVENT_TABLE()
 
 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
 END_EVENT_TABLE()
 
 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)

-#endif

 
 // ============================================================================
 // implementation
 // ============================================================================
 
 
 // ============================================================================
 // implementation
 // ============================================================================
 

+// ============================================================================
+// Private class
+// ============================================================================
+
+// This reuses wxTabView to draw the tabs.
+class WXDLLEXPORT wxNotebookTabView: public wxTabView
+{
+DECLARE_DYNAMIC_CLASS(wxNotebookTabView)
+public:
+  wxNotebookTabView(wxNotebook* notebook, long style = wxTAB_STYLE_DRAW_BOX | wxTAB_STYLE_COLOUR_INTERIOR);
+  ~wxNotebookTabView(void);
+
+  // Called when a tab is activated
+  virtual void OnTabActivate(int activateId, int deactivateId);
+  // Allows vetoing
+  virtual bool OnTabPreActivate(int activateId, int deactivateId);
+
+protected:
+   wxNotebook*      m_notebook;
+};
+

 // ----------------------------------------------------------------------------
 // wxNotebook construction
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxNotebook construction
 // ----------------------------------------------------------------------------


@@ -72,7 +98,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
 void wxNotebook::Init()
 {
     m_tabView = (wxNotebookTabView*) NULL;
 void wxNotebook::Init()
 {
     m_tabView = (wxNotebookTabView*) NULL;

-    m_pImageList = NULL;

     m_nSelection = -1;
 }
 
     m_nSelection = -1;
 }
 


@@ -108,11 +133,10 @@ bool wxNotebook::Create(wxWindow *parent,
 
     m_windowId = id == -1 ? NewControlId() : id;
 
 
     m_windowId = id == -1 ? NewControlId() : id;
 

-    // It's like a normal window...
-    if (!wxWindow::Create(parent, id, pos, size, style|wxNO_BORDER, name))
+    if (!wxControl::Create(parent, id, pos, size, style|wxNO_BORDER, wxDefaultValidator, name))

         return FALSE;
 
         return FALSE;
 

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));

 
     SetTabView(new wxNotebookTabView(this));
 
 
     SetTabView(new wxNotebookTabView(this));
 


@@ -128,22 +152,14 @@ wxNotebook::~wxNotebook()
 // ----------------------------------------------------------------------------
 // wxNotebook accessors
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxNotebook accessors
 // ----------------------------------------------------------------------------

-int wxNotebook::GetPageCount() const
-{
-    return m_aPages.Count();
-}
-

 int wxNotebook::GetRowCount() const
 {
     // TODO
     return 0;
 }
 
 int wxNotebook::GetRowCount() const
 {
     // TODO
     return 0;
 }
 

-int wxNotebook::SetSelection(int nPage)
+int wxNotebook::SetSelection(size_t nPage)

 {
 {

-    if (nPage == -1)
-      return 0;
-

     wxASSERT( IS_VALID_PAGE(nPage) );
 
 #if defined (__WIN16__)
     wxASSERT( IS_VALID_PAGE(nPage) );
 
 #if defined (__WIN16__)


@@ -157,6 +173,7 @@ int wxNotebook::SetSelection(int nPage)
     return 0;
 }
 
     return 0;
 }
 

+#if 0

 void wxNotebook::AdvanceSelection(bool bForward)
 {
     int nSel = GetSelection();
 void wxNotebook::AdvanceSelection(bool bForward)
 {
     int nSel = GetSelection();


@@ -166,8 +183,9 @@ void wxNotebook::AdvanceSelection(bool bForward)
     else
         SetSelection(nSel == 0 ? nMax : nSel - 1);
 }
     else
         SetSelection(nSel == 0 ? nMax : nSel - 1);
 }

+#endif

 
 

-bool wxNotebook::SetPageText(int nPage, const wxString& strText)
+bool wxNotebook::SetPageText(size_t nPage, const wxString& strText)

 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 #if defined (__WIN16__)
 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 #if defined (__WIN16__)


@@ -186,7 +204,7 @@ bool wxNotebook::SetPageText(int nPage, const wxString& strText)
     return FALSE;
 }
 
     return FALSE;
 }
 

-wxString wxNotebook::GetPageText(int nPage) const
+wxString wxNotebook::GetPageText(size_t nPage) const

 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 
 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 


@@ -201,7 +219,7 @@ wxString wxNotebook::GetPageText(int nPage) const
 #endif
 }
 
 #endif
 }
 

-int wxNotebook::GetPageImage(int nPage) const
+int wxNotebook::GetPageImage(size_t nPage) const

 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 
 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 


@@ -209,7 +227,7 @@ int wxNotebook::GetPageImage(int nPage) const
     return 0;
 }
 
     return 0;
 }
 

-bool wxNotebook::SetPageImage(int nPage, int nImage)
+bool wxNotebook::SetPageImage(size_t nPage, int nImage)

 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 
 {
     wxASSERT( IS_VALID_PAGE(nPage) );
 


@@ -217,9 +235,21 @@ bool wxNotebook::SetPageImage(int nPage, int nImage)
     return FALSE;
 }
 
     return FALSE;
 }
 

-void wxNotebook::SetImageList(wxImageList* imageList)
-{ 
-    m_pImageList = imageList;
+// set the size (the same for all pages)
+void wxNotebook::SetPageSize(const wxSize& size)
+{
+    // TODO
+}
+
+// set the padding between tabs (in pixels)
+void wxNotebook::SetPadding(const wxSize& padding)
+{
+    // TODO
+}
+
+// set the size of the tabs for wxNB_FIXEDWIDTH controls
+void wxNotebook::SetTabSize(const wxSize& sz)
+{

     // TODO
 }
 
     // TODO
 }
 


@@ -228,14 +258,14 @@ void wxNotebook::SetImageList(wxImageList* imageList)
 // ----------------------------------------------------------------------------
 
 // remove one page from the notebook and delete it
 // ----------------------------------------------------------------------------
 
 // remove one page from the notebook and delete it

-bool wxNotebook::DeletePage(int nPage)
+bool wxNotebook::DeletePage(size_t nPage)

 {
     wxCHECK( IS_VALID_PAGE(nPage), FALSE );
 
     if (m_nSelection != -1)
     {
 {
     wxCHECK( IS_VALID_PAGE(nPage), FALSE );
 
     if (m_nSelection != -1)
     {

-        m_aPages[m_nSelection]->Show(FALSE);
-        m_aPages[m_nSelection]->Lower();
+        m_pages[m_nSelection]->Show(FALSE);
+        m_pages[m_nSelection]->Lower();

     }
 
     wxNotebookPage* pPage = GetPage(nPage);
     }
 
     wxNotebookPage* pPage = GetPage(nPage);


@@ -245,10 +275,10 @@ bool wxNotebook::DeletePage(int nPage)
     m_tabView->RemoveTab((int) (long) pPage);
 #endif
 
     m_tabView->RemoveTab((int) (long) pPage);
 #endif
 

-    delete m_aPages[nPage];
-    m_aPages.Remove(nPage);
+    m_pages.Remove(pPage);
+    delete pPage;

 
 

-    if (m_aPages.GetCount() == 0)
+    if (m_pages.GetCount() == 0)

     {
       m_nSelection = -1;
       m_tabView->SetTabSelection(-1, FALSE);
     {
       m_nSelection = -1;
       m_tabView->SetTabSelection(-1, FALSE);


@@ -279,13 +309,18 @@ bool wxNotebook::DeletePage(wxNotebookPage* page)
         return FALSE;
 }
 
         return FALSE;
 }
 

+bool wxNotebook::RemovePage(size_t nPage)
+{
+    return DoRemovePage(nPage) != NULL;
+}
+

 // remove one page from the notebook
 // remove one page from the notebook

-bool wxNotebook::RemovePage(int nPage)
+wxWindow* wxNotebook::DoRemovePage(size_t nPage)

 {
     wxCHECK( IS_VALID_PAGE(nPage), FALSE );
 
 {
     wxCHECK( IS_VALID_PAGE(nPage), FALSE );
 

-    m_aPages[nPage]->Show(FALSE);
-    //    m_aPages[nPage]->Lower();
+    m_pages[nPage]->Show(FALSE);
+    //    m_pages[nPage]->Lower();

 
     wxNotebookPage* pPage = GetPage(nPage);
 #if defined (__WIN16__)
 
     wxNotebookPage* pPage = GetPage(nPage);
 #if defined (__WIN16__)


@@ -294,9 +329,9 @@ bool wxNotebook::RemovePage(int nPage)
     m_tabView->RemoveTab((int) (long) pPage);
 #endif
 
     m_tabView->RemoveTab((int) (long) pPage);
 #endif
 

-    m_aPages.Remove(nPage);
+    m_pages.Remove(pPage);

 
 

-    if (m_aPages.GetCount() == 0)
+    if (m_pages.GetCount() == 0)

     {
       m_nSelection = -1;
       m_tabView->SetTabSelection(-1, TRUE);
     {
       m_nSelection = -1;
       m_tabView->SetTabSelection(-1, TRUE);


@@ -305,25 +340,25 @@ bool wxNotebook::RemovePage(int nPage)
     {
       // Only change the selection if the page we
       // deleted was the selection.
     {
       // Only change the selection if the page we
       // deleted was the selection.

-      if (nPage == m_nSelection)
+      if (nPage == (size_t)m_nSelection)

       {
          m_nSelection = -1;
          // Select the first tab. Generates a ChangePage.
       {
          m_nSelection = -1;
          // Select the first tab. Generates a ChangePage.

-         m_tabView->SetTabSelection((int) (long) GetPage(0), TRUE);
+         m_tabView->SetTabSelection(0, TRUE);

       }
       else
       {
        // We must adjust which tab we think is selected.
         // If greater than the page we deleted, it must be moved down
         // a notch.
       }
       else
       {
        // We must adjust which tab we think is selected.
         // If greater than the page we deleted, it must be moved down
         // a notch.

-        if (m_nSelection > nPage)
+        if (size_t(m_nSelection) > nPage)

           m_nSelection -- ;
       }
     }
 
     RefreshLayout(FALSE);
 
           m_nSelection -- ;
       }
     }
 
     RefreshLayout(FALSE);
 

-    return TRUE;
+    return pPage;

 }
 
 bool wxNotebook::RemovePage(wxNotebookPage* page)
 }
 
 bool wxNotebook::RemovePage(wxNotebookPage* page)


@@ -338,10 +373,10 @@ bool wxNotebook::RemovePage(wxNotebookPage* page)
 // Find the position of the wxNotebookPage, -1 if not found.
 int wxNotebook::FindPagePosition(wxNotebookPage* page) const
 {
 // Find the position of the wxNotebookPage, -1 if not found.
 int wxNotebook::FindPagePosition(wxNotebookPage* page) const
 {

-    int nPageCount = GetPageCount();
-    int nPage;
+    size_t nPageCount = GetPageCount();
+    size_t nPage;

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

-        if (m_aPages[nPage] == page)
+        if (m_pages[nPage] == page)

             return nPage;
     return -1;
 }
             return nPage;
     return -1;
 }


@@ -351,27 +386,18 @@ bool wxNotebook::DeleteAllPages()
 {
     m_tabView->ClearTabs(TRUE);
 
 {
     m_tabView->ClearTabs(TRUE);
 

-    int nPageCount = GetPageCount();
-    int nPage;
+    size_t nPageCount = GetPageCount();
+    size_t nPage;

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

-        delete m_aPages[nPage];
+        delete m_pages[nPage];

 
 

-    m_aPages.Clear();
+    m_pages.Clear();

 
     return TRUE;
 }
 
 
     return TRUE;
 }
 

-// add a page to the notebook
-bool wxNotebook::AddPage(wxNotebookPage *pPage,
-                         const wxString& strText,
-                         bool bSelect,
-                         int imageId)
-{
-    return InsertPage(GetPageCount(), pPage, strText, bSelect, imageId);
-}
-

 // same as AddPage() but does it at given position
 // same as AddPage() but does it at given position

-bool wxNotebook::InsertPage(int nPage,
+bool wxNotebook::InsertPage(size_t nPage,

                             wxNotebookPage *pPage,
                             const wxString& strText,
                             bool bSelect,
                             wxNotebookPage *pPage,
                             const wxString& strText,
                             bool bSelect,


@@ -390,7 +416,7 @@ bool wxNotebook::InsertPage(int nPage,
       pPage->Show(FALSE);
 
     // save the pointer to the page
       pPage->Show(FALSE);
 
     // save the pointer to the page

-    m_aPages.Insert(pPage, nPage);
+    m_pages.Insert(pPage, nPage);

 
     if (bSelect)
     {
 
     if (bSelect)
     {


@@ -435,8 +461,11 @@ void wxNotebook::OnSize(wxSizeEvent& event)
 // This was supposed to cure the non-display of the notebook
 // until the user resizes the window.
 // What's going on?
 // This was supposed to cure the non-display of the notebook
 // until the user resizes the window.
 // What's going on?

-void wxNotebook::OnIdle(wxIdleEvent& event)
+void wxNotebook::OnInternalIdle()

 {
 {

+    wxWindow::OnInternalIdle();
+
+#if 0    

     static bool s_bFirstTime = TRUE;
     if ( s_bFirstTime ) {
       /*
     static bool s_bFirstTime = TRUE;
     if ( s_bFirstTime ) {
       /*


@@ -456,7 +485,7 @@ void wxNotebook::OnIdle(wxIdleEvent& event)
       */
       s_bFirstTime = FALSE;
     }
       */
       s_bFirstTime = FALSE;
     }

-    event.Skip();
+#endif

 }
 
 // Implementation: calculate the layout of the view rect
 }
 
 // Implementation: calculate the layout of the view rect


@@ -476,7 +505,7 @@ bool wxNotebook::RefreshLayout(bool force)
         rect.y = tabHeight + 4;
         rect.width = cw - 8;
         rect.height = ch - 4 - rect.y ;
         rect.y = tabHeight + 4;
         rect.width = cw - 8;
         rect.height = ch - 4 - rect.y ;

-  
+

         m_tabView->SetViewRect(rect);
 
         m_tabView->LayoutTabs();
         m_tabView->SetViewRect(rect);
 
         m_tabView->LayoutTabs();


@@ -489,7 +518,7 @@ bool wxNotebook::RefreshLayout(bool force)
         rect.y = tabHeight + 4;
         rect.width = cw - 8;
         rect.height = ch - 4 - rect.y ;
         rect.y = tabHeight + 4;
         rect.width = cw - 8;
         rect.height = ch - 4 - rect.y ;

-  
+

         m_tabView->SetViewRect(rect);
 
         m_tabView->LayoutTabs();
         m_tabView->SetViewRect(rect);
 
         m_tabView->LayoutTabs();


@@ -499,12 +528,12 @@ bool wxNotebook::RefreshLayout(bool force)
 
         // fit the notebook page to the tab control's display area
 
 
         // fit the notebook page to the tab control's display area
 

-        unsigned int nCount = m_aPages.Count();
-        for ( unsigned int nPage = 0; nPage < nCount; nPage++ ) {
-            wxNotebookPage *pPage = m_aPages[nPage];
+        size_t nCount = m_pages.Count();
+        for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
+            wxNotebookPage *pPage = m_pages[nPage];
+            wxRect clientRect = GetAvailableClientSize();

             if (pPage->IsShown())
             {
             if (pPage->IsShown())
             {

-                wxRect clientRect = GetAvailableClientSize();

                 pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
                 if ( pPage->GetAutoLayout() )
                    pPage->Layout();
                 pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
                 if ( pPage->GetAutoLayout() )
                    pPage->Layout();


@@ -532,7 +561,7 @@ void wxNotebook::OnSetFocus(wxFocusEvent& event)
 {
     // set focus to the currently selected page if any
     if ( m_nSelection != -1 )
 {
     // set focus to the currently selected page if any
     if ( m_nSelection != -1 )

-        m_aPages[m_nSelection]->SetFocus();
+        m_pages[m_nSelection]->SetFocus();

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


@@ -569,9 +598,9 @@ bool wxNotebook::DoPhase(int /* nPhase */)
     return TRUE;
 }
 
     return TRUE;
 }
 

-void wxNotebook::Command(wxCommandEvent& event)
+void wxNotebook::Command(wxCommandEvent& WXUNUSED(event))

 {
 {

-    wxFAIL_MSG("wxNotebook::Command not implemented");
+    wxFAIL_MSG(wxT("wxNotebook::Command not implemented"));

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


@@ -585,21 +614,21 @@ void wxNotebook::ChangePage(int nOldSel, int nSel)
     wxASSERT( nOldSel != nSel ); // impossible
 
     if ( nOldSel != -1 ) {
     wxASSERT( nOldSel != nSel ); // impossible
 
     if ( nOldSel != -1 ) {

-        m_aPages[nOldSel]->Show(FALSE);
-        m_aPages[nOldSel]->Lower();
+        m_pages[nOldSel]->Show(FALSE);
+        m_pages[nOldSel]->Lower();

     }
 
     }
 

-    wxNotebookPage *pPage = m_aPages[nSel];
+    wxNotebookPage *pPage = m_pages[nSel];

 
     wxRect clientRect = GetAvailableClientSize();
     pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 
 
     wxRect clientRect = GetAvailableClientSize();
     pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 

+    Refresh();
+

     pPage->Show(TRUE);
     pPage->Raise();
     pPage->SetFocus();
 
     pPage->Show(TRUE);
     pPage->Raise();
     pPage->SetFocus();
 

-    Refresh();
-

     m_nSelection = nSel;
 }
 
     m_nSelection = nSel;
 }
 


@@ -636,7 +665,7 @@ wxRect wxNotebook::GetAvailableClientSize()
 /*
  * wxNotebookTabView
  */
 /*
  * wxNotebookTabView
  */

- 
+

 IMPLEMENT_CLASS(wxNotebookTabView, wxTabView)
 
 wxNotebookTabView::wxNotebookTabView(wxNotebook *notebook, long style): wxTabView(style)
 IMPLEMENT_CLASS(wxNotebookTabView, wxTabView)
 
 wxNotebookTabView::wxNotebookTabView(wxNotebook *notebook, long style): wxTabView(style)


@@ -658,12 +687,7 @@ void wxNotebookTabView::OnTabActivate(int activateId, int deactivateId)
   if (!m_notebook)
     return;
 
   if (!m_notebook)
     return;
 

-// Because of name truncation!
-#if defined(__BORLANDC__) && defined(__WIN16__)
-  wxNotebookEvent event(wxEVT_COMMAND_NB_PAGE_CHANGED, m_notebook->GetId());
-#else

   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED, m_notebook->GetId());
   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED, m_notebook->GetId());

-#endif

 
 #if defined (__WIN16__)
   int activatePos = activateId;
 
 #if defined (__WIN16__)
   int activatePos = activateId;


@@ -684,4 +708,36 @@ void wxNotebookTabView::OnTabActivate(int activateId, int deactivateId)
   m_notebook->GetEventHandler()->ProcessEvent(event);
 }
 
   m_notebook->GetEventHandler()->ProcessEvent(event);
 }
 

+// Allows Vetoing
+bool wxNotebookTabView::OnTabPreActivate(int activateId, int deactivateId)
+{
+  bool retval = TRUE;
+  
+  if (m_notebook)
+  {
+    wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_notebook->GetId());
+
+#if defined (__WIN16__)
+    int activatePos = activateId;
+    int deactivatePos = deactivateId;
+#else
+    // Translate from wxTabView's ids (which aren't position-dependent)
+    // to wxNotebook's (which are).
+    wxNotebookPage* pActive = (wxNotebookPage*) activateId;
+    wxNotebookPage* pDeactive = (wxNotebookPage*) deactivateId;
+
+    int activatePos = m_notebook->FindPagePosition(pActive);
+    int deactivatePos = m_notebook->FindPagePosition(pDeactive);
+
+#endif
+    event.SetEventObject(m_notebook);
+    event.SetSelection(activatePos);
+    event.SetOldSelection(deactivatePos);
+    if (m_notebook->GetEventHandler()->ProcessEvent(event))
+    {
+      retval = event.IsAllowed();
+    }
+  }
+  return retval;
+}