[racket] Need Help With Keybindings

The most important thing I need at
this point is a way to bind ^W to
something like delete-word-backwards.
Most of the other things I really wanted
I could do with the 'move' command,
but I can't find something like delete-
word-backwards at
     http://docs.racket-lang.org/gui/text_.html
I see the delete command, but surely
I don't have to build my own delete-
word-backwards from there when that
operation must already exist in the
emacs-like bindings.

Is there not a keybindings file
somewhere already that does the
emacs-style bindings, which I
could just modify to use different
keys?  Am I missing something
fundamental in how this whole
thing works?

--DGK


On Sun, Sep 11, 2011 at 12:24 PM, David G. Kay <dgkdgk at gmail.com> wrote:

>
> Thank you; that's great.   I'm most of the way
> there now.
>
> Still, I'm finding the text% documentation
> tough sledding; the tools seem lower-level
> than I need.
>
> Is there a keybinding file somewhere for
> emacs commands?  I think changing the
> actual keystrokes in that file would be the
> easiest way for me to do what I want.
>
> Thanks,
>
> --DGK
>
>
> On Sat, Sep 10, 2011 at 2:22 PM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
>
>> At Sat, 10 Sep 2011 12:56:29 -0700, "David G. Kay" wrote:
>> > Hi, everyone;
>> >
>> > I'd like to rebind some of the DrRacket
>> > editor keys.  (I'm trying to reproduce the
>> > idiosyncratic editor layout I'm used to;
>> > it has an emacs flavor but with different
>> > keys.)
>> >
>> > To start, I just want to map ^t to move
>> > up a line, ^v to move down, ^f to move
>> > left, and ^g to move right.
>> >
>> > I created this file ("keys.rkt"):
>> >
>> > #lang s-exp framework/keybinding-lang
>> >
>> > (keybinding "c:t" (lambda (editor evt) (send editor previous-line)))
>> > (keybinding "c:v" (lambda (editor evt) (send editor next-line)))
>> > (keybinding "c:f" (lambda (editor evt) (send editor
>> backward-character)))
>> > (keybinding "c:g" (lambda (editor evt) (send editor forward-character)))
>> >
>> >
>> > I add the file using "Add User-defined
>> > Keybindings" in DrRacket.  But I get
>> > this message as soon as I type one of
>> > my rebound keys:
>> >
>> > Error running keybinding .../Scheme/keys.rkt:18:18
>> >
>> > send: no such method: previous-line for class:
>> ...engine/test-tool.scm:36:6
>> >
>> >
>> > It's complaining about the previous-line
>> > method, but that's listed in section 7
>> > (Editor Functions) of the Racket Graphical
>> > Interface Toolkit manual:
>> >
>> http://docs.racket-lang.org/gui/Editor_Functions.html?q=Editor_Functions&q=edit
>> > or%25&q=forward-select-word&q=key%20bindings
>>
>> I can see how it's confusing, but that isn't a list of methods. It's a
>> list of strings that are mapped to functions in a keymap%, where the
>> string is eventually converted to a function through the
>> `call-function' method of keymap%. The extra level of indirection is an
>> ugly artifact of the days when parts of the GUI toolkit were
>> implemented in C++.
>>
>>
>> For text-editor methods, look here:
>>
>>  http://docs.racket-lang.org/gui/text_.html
>>
>> I think you want to use the `move' method.
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20110925/ccd6fbb9/attachment.html>