on-new-image-snip in editor<%>

Creates and returns a new instance of image-snip% for insert-image.

• (send an-editor on-new-image-snip filename kind relative-path? inline?) -> image-snip% object
     filename : path or #f
   kind : symbol in '(unknown gif jpeg xbm xpm bmp pict)
   relative-path? : boolean
     inline? : boolean

  The filename argument cannot be a string; it must be a path value, section 11.3.1 in PLT MzScheme: Language Manual.

  Returns (make-object image-snip% filename kind relative-path? inline?).