add-parent in graph-snip<%>

Adds a parent of this snip. Instead of calling this method, consider using add-links function provided from this library.

• (send a-graph-snip add-parent parent) -> void
     parent : (is-a?/c graph-snip<%>)

  
  

• (send a-graph-snip add-parent parent mouse-over-pen mouse-off-pen mouse-over-brush mouse-off-brush) -> void
     parent : (is-a?/c graph-snip<%>)
     mouse-over-pen : (union false? (is-a?/c pen%))
     mouse-off-pen : (union false? (is-a?/c pen%))
     mouse-over-brush : (union false? (is-a?/c brush%))
     mouse-off-brush : (union false? (is-a?/c brush%)))