---
:wxBoxSizer.AddSpacer:
  :detail:
    :pre:
      :programlisting:
        - :pattern: !ruby/regexp /wxBoxSizer::IsVertical/
          :replace: |
            
            ```ruby
              if box_sizer.vertical?
                box_sizer.add(0, size, 0)
              else
                box_size.add(size, 0, 0)
              end
            ```