Invalidate notebook best size when pages are added or removed

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28154 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/bookctrl.cpp

@@ -151,7 +151,8 @@ wxBookCtrl::InsertPage(size_t nPage,
                  _T("invalid page index in wxBookCtrl::InsertPage()") );
 
     m_pages.Insert(page, nPage);
-
+    InvalidateBestSize();
+    
     return true;
 }
 
@@ -173,6 +174,7 @@ wxWindow *wxBookCtrl::DoRemovePage(size_t nPage)
 
     wxWindow *pageRemoved = m_pages[nPage];
     m_pages.RemoveAt(nPage);
+    InvalidateBestSize();
 
     return pageRemoved;
 }