on-interactive-resize (augmentable only) in pasteboard%

This method is called when the user starts interactively resizing a snip (the one that is selected; see find-next-selected-snip), after can-interactive-resize? is called to verify that the resize is allowed. The after-interactive-resize method is guaranteed to be called after the resize has completed.

• (send a-pasteboard on-interactive-resize snip) -> void
     snip : snip% object

  The snip argument is the snip that will be resized. This method returns #t.