GtkPaned::pack2
void pack2(
      GtkWidget 
       child
     , [bool 
      resize = true
     , [bool 
      shrink = true
     ]]); 
    
     pack2()  packs the child widget
     specified into the bottom or right pane of a 
     GtkPaned-based widget.
    
    
     The resize parameter when set to its default
     true allows the pane and its child widget to expand
     to fill the area between the dividing handle and the edge of the
     container when the toplevel window is maximised, in the direction of
     the pane arrangement.  The position of the dividing handle can be set
     using set_position() , or by
     default is set at the size requested by the child belonging to the
     opposite pane, where its resize parameter has
     been set to false.
    
    
     Note that the resize parameter describes the
     spatial relationship between the two panes, so that setting both panes
     alike will always result in both panes resizing when the top-level
     window is maximised.  The user resizing facility offered by the handle
     is not affected by the resize setting.
    
    
     The shrink parameter when set to its default 
     true allows the pane to shrink beyond the size
     requested by its child widget.  Setting the 
     shrink parameter to false 
     prevents it from doing this.  Note that setting the parameter to 
     false across both panes renders the dividing handle
     ineffective where the size of the top-level window is reliant upon the
     size requests of the child widgets.