[racket] line numbers in drracket

From: Jon Rafkind (rafkind at cs.utah.edu)
Date: Sat Sep 18 17:40:33 EDT 2010

  Ok I tried that route as well. I used extend-unit-frame but I can't 
get a hold of the definitions window. I can add a bar to the frame but 
then its on the side of the interactions panel as well, which I don't want.

I tried getting a hold of the `resizable-pane' that the definitions 
window and interactions window are a children of but I was not able to 
manipulate it.

It seems like there should be some container pane for the definitions 
window whose default behavior is just to show the definitions canvas. 
Then I could add a new editor-canvas as a sibling to the definitions window.

On 09/18/2010 06:25 AM, Robby Findler wrote:
> You don't want to extend the definitions canvas, if you want to follow
> what Grant did. You want to make a new editor-canvas that is in
> parallel to it, next to it.
> Robby
> On Fri, Sep 17, 2010 at 4:39 PM, Jon Rafkind<rafkind at cs.utah.edu>  wrote:
>>   I took a stab at adding line numbers to DrRacket. I started with this code
>> from Grant Rettke:
>> http://www.wisdomandwonder.com/link/1808/adding-a-gutter-to-drscheme which
>> works reasonably well on its own but when I had trouble integrating it with
>> DrRacket.
>> I think the way to go is to extend the definitions-canvas but the issue
>> there is I can't seem to add new panel objects to the canvas. I can pass the
>> definitions-text% straight through via (super-new [editor editor]). I tried
>> making a proxy text%/editor-canvas% combo but I just had the same issue of
>> not being able to add any elements to it.
>> So I guess the question is can I put more gui elements in a canvas?
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