[plt-scheme] unclickable clickbacks in interactions window snips

From: Ryan Culpepper (ryan_sml at yahoo.com)
Date: Wed Jan 25 17:46:33 EST 2006

--- Robby Findler <robby at cs.uchicago.edu> wrote:

> At Tue, 24 Jan 2006 15:41:59 -0800 (PST), Ryan Culpepper wrote:
> > I discovered that when an expression evaluates to an editor-snip%
> > object in the DrScheme interactions window, DrScheme actually
> inserts
> > the snip into the window. This is wonderful!
> If "wonderful" also entails "security hole" we're on the same page
> ;)
> > But if I add clickbacks to the text displayed by the editor, they
> > aren't activated when I click the text. The clickbacks work as
> > expected when I put the same object into an editor-canvas in
> another
> > frame.
> > 
> > Is there anything I can do to get the clickbacks to work, or does
> > DrScheme intentionally block clickbacks from user snips? (The
> > editor-snip is not created by a tool, just by an ordinary MrEd
> > program.)
> You probably need to override the copy method (that's just a guess,
> but that's usually what gets missed in this situation).

To clarify: I'm not creating a new subclass of snip%, I'm just
putting some things in an instance of an editor-snip%. That class
already seems to implement the copy method (at least, I can display
them multiple times in the interactions window, and I can copy and
paste them).

Can you think of anything else I might be missing?


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