update the sizes of all pages when the control size changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38981 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/bookctrl.cpp

@@ -175,6 +175,9 @@ wxBookCtrlBase::InsertPage(size_t nPage,
                  _T("invalid page index in wxBookCtrlBase::InsertPage()") );
 
     m_pages.Insert(page, nPage);
+    if ( page )
+        page->SetSize(GetPageRect());
+
     InvalidateBestSize();
 
     return true;
@@ -305,12 +308,20 @@ void wxBookCtrlBase::DoSize()
             m_bookctrl->Move(posCtrl);
     }
 
-    // resize the currently shown page
-    if (GetSelection() != wxNOT_FOUND )
+    // resize all pages to fit the new control size
+    const wxRect pageRect = GetPageRect();
+    const unsigned pagesCount = m_pages.Count();
+    for ( unsigned int i = 0; i < pagesCount; ++i )
     {
-        wxWindow *page = m_pages[GetSelection()];
-        wxCHECK_RET( page, _T("NULL page?") );
-        page->SetSize(GetPageRect());
+        wxWindow * const page = m_pages[i];
+        if ( !page )
+        {
+            wxASSERT_MSG( AllowNullPage(),
+                _T("Null page in a control that does not allow null pages?") );
+            continue;
+        }
+
+        page->SetSize(pageRect);
     }
 }