added a menu allowing to change the border style used by the widget

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38772 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/widgets/checkbox.cpp

@@ -77,6 +77,7 @@ public:
     virtual ~CheckBoxWidgetsPage(){};
 
     virtual wxControl *GetWidget() const { return m_checkbox; }
+    virtual void RecreateWidget() { CreateCheckbox(); }
 
 protected:
     // event handlers
@@ -243,7 +244,7 @@ void CheckBoxWidgetsPage::CreateCheckbox()
 
     delete m_checkbox;
 
-    int flags = 0;
+    int flags = ms_defaultFlags;
     if ( m_chkRight->IsChecked() )
         flags |= wxALIGN_RIGHT;