ltk-user March 2006

ltk-user@common-lisp.net

7 participants
13 discussions

[ltk-user] Tile?
by Ken Tilton 28 Mar '06

28 Mar '06

I just ran across Tk Tile. Seems to be all the rage. Also seems like it will be built into Tk 8.5. Is LTk going that way? kt

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[ltk-user] Evolving Ltktest-with-cells.lisp
by Ken Tilton 26 Mar '06

26 Mar '06

I have been refining both the doc and the functionality of ltktest-with-cells (in the Celtk module under Cells), which mirrors the LTk demo ltktest, for a few days now adding more and more connectivity between the widgets and the main display, as one would have in a more real-world application. At this point I think both doc and demo are adequate, and anyway I will not know how to improve them without feedback, whether it be suggestions or requests for clarification. btw, thx to Frank for his report that all runs well on Mac OS X. I myself saw recent versions working on Lispworks+win32, albeit with a problem in that the spinning lines spun at a glacial rate. I would be interested in hearing if Celtk runs on other platforms. Now here is a big heads up: every once in a while, except when I am trying to make it happen <g>, ACL8 on win32 hangs when I close ltktest-with-cells. Possibly something to do with my Timer class run amok? We will see. ken

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[ltk-user] Re: [cells-devel] Celtk/Cells3 Compleat
by Thomas F. Burdick 24 Mar '06

24 Mar '06

On 3/24/06, Friedrich Dominicus <frido(a)q-software-solutions.de> wrote: > I fetched the tarball today. I did not now how to check out via CVS, I > guess it's as usual on common lisp .net but I have not idea on the > proper name for it. > > Will try tomorrow. 0.881 and SBCL 0.9.10 should be good together (and Ltk isn't developed with CVS, but with a subversion repository that's not publicly available at the moment), and both work quite well with Cells II at least. For Celtk, you need to get the CVS version of Celtk, which you can download from here: http://common-lisp.net/cgi-bin/viewcvs.cgi/Celtk/?root=cells by clicking on the "download tarball" link at the bottom of the page.

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[ltk-user] Re: [cells-devel] Celtk/Cells3 Compleat
by Marco Gidde 24 Mar '06

24 Mar '06

Friedrich Dominicus <frido(a)q-software-solutions.de> writes: > I fetched the tarball today. I did not now how to check out via CVS, I > guess it's as usual on common lisp .net but I have not idea on the > proper name for it. Under Linux it is as easy as: cvs -z3 -d :pserver:anonymous:anonymous@common-lisp.net:/project/cells/cvsroot co cells cvs -z3 -d :pserver:anonymous:anonymous@common-lisp.net:/project/cells/cvsroot co Celtk This creates the directories "cells" and "Celtk" and there you can (from time to time) say "cvs update" to get the latest stuff. Regards, Marco

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[ltk-user] Celtk\ltk-kt
by Ken Tilton 23 Mar '06

23 Mar '06

I forgot to mention that Celtk should Just Work with the official ltk, and I would build against that, but ltk classic kinda mangles error messages from Tk, and I tend to get a lot of those, so there are just a few tweaks (one?) to get the whole message legibly. Maybe those (it?) would be a good enhancement to Ltk? I noticed that I also commented out ltktest classic at some point. Not sure why, but there should be no conflict with anything in Celtk. ken

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[ltk-user] Did I ask this already?
by Ken Tilton 23 Mar '06

23 Mar '06

ltktest "classic" as well as my Cells driven re-write absolutely crawls when you press Start, running Lispworks on win32. Running allegroCL on win32 both run fine. Has anyone noticed that? Suggestions? Comments? ken

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[ltk-user] Celtk/Cells3 Compleat
by Ken Tilton 23 Mar '06

23 Mar '06

You can now grab Cells3 and Celtk from the c-l.net Cells repository. .\Celtk\ltktest-cells-inside.lisp has a load of doc inside it, including some on just Cells. Check out load.lisp in either source tree to build and run. (Checking next that I remembered to commit those, speaking of which, I use neither those nor ASDF when working, so they often have bugs. Speaking of which...) Bug reports or request for clarification on the doc exceedingly welcome. Otherwise, I will be getting to work on a commercial app using both these (as long as Tk holds up, which looks good so far). ken

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[ltk-user] Menu accelerators
by Ken Tilton 23 Mar '06

23 Mar '06

While trying to re-implement ltktest with Celtk (+ Cells Ltk) I got stumped by why Alt-Q worked for ltktest "classic" but not for me. Then I noticed: (bind **tk** "<Alt-q>" (lambda (event) (declare (ignore event)) (setf ** exit-mainloop** t))) Not sure how well that scales to other menu items. Not an issue here, but for one thing it fails to check whether the menu item being faked is enabled. And at any rate it requires duplicating the code associated with a menu item (tho here the menu item command was simply "exit"). Anyway... I found something in one of my Tk books and did: (defobserver accelerator :around ((self menu-entry-usable) new-value old-value old-value-bound-p) (call-next-method) (with-integrity (:client '(:bind nil)) (when new-value (tk-format-now "bind . ~a {~a invoke ~a}" new-value (path (upper self menu)) (index self))))) (forget most of that, but the idea is a general solution to menu accelerators via TCL "invoke"). Only tested for the same alt-q accelerator, but it could handle any accelerator for any menu item. The TCL invoke, btw, does nothing if the menu item is disabled. Confession: since defobserver is an on-change handler, it really should be looking for the odd case in which an accelerator got */removed/* (?!) and then clear the binding. ken

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[ltk-user] color format question
by irvin h. 11 Mar '06

11 Mar '06

Hi, I am new to ltk and am trying to create rectangles of different colors on a canvas. I would like to specify the value of the :fill option with a variable for example (itemconfigure canvas rectangle :fill :some-var-val) , but I am not sure how to do that; any help would be greatly appreciated. Also what are the acceptable formats for specifying a color? I know there are words like 'red' and 'black' and there is also hexadecimal #RRBBGG are there others? Thanks again. -Irvin H.

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[ltk-user] LTKtools v0.1 and threads
by michael graffam 10 Mar '06

10 Mar '06

Hi Peter, Regarding your comments (I'll take them in order).. You are right, all of this definately belongs in a package. The original code base was not package-safe. The inspector at that point had an LTK interface grafted onto it, but the underlying code used literal symbols in such a fashion that it would break when placed in a package and used without USE-PACKAGE. This isn't the case anymore, so I just wrapped it in a package just now. I do prefer to explicitly give the package name, as in: ltk:format-wish or whatever. It helps me 6 or 8 months later when I've forgotten about the packages and don't remember what is where. The threading issue is important, however. I see no real way to escape using threads. If the user has two or more console windows open, the commands issued to each have to run concurrently. But you are right, of course, that LTK is not certain to be thread safe. I don't believe that CMUCL will allow such string interpolation as you describe, however. I believe CMUCL will block a second thread from accessing *WISH* until the first thread completes. When I get some free time, I'll experiment with this issue on CMUCL and SBCL and let the list know what I've come up with. Mike P.S. For some reason unknown to me, I have stopped recieving email from the ltk-user list. I am subscribed, but no mail is getting to me. I read your reply on the archive web page. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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ltk-user March 2006