ltk-user

ltk-user@common-lisp.net

259 discussions

[ltk-user] Problems with choose-directory on windows.
by Denatus 01 Aug '07

01 Aug '07

I'm trying to run this code on Windows XP, SBCL 1.0.6 and ActiveTCL 8.4.14.0 : (defun tester () (setf *debug-tk* nil) (with-ltk () (let ((b (make-instance 'button :text "ok" :command (lambda () (choose-directory) (finish-output))))) (pack b)))) This code hangs, and does not give me a directory chooser. Anyone have a fix for this ? -- _________________ Kjeld K. B. Massali denatus(a)gmail.com ------------------------------

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[ltk-user] Manipulating multiple canvases with a single scrollbar?
by Dumb Idiot 11 Jul '07

11 Jul '07

Hi, I need to scroll two canvases at the same time using a single scrollbar. Is there any simple way to implement this using ltk? I found this in the tk FAQs, but I can't quite get it to work using ltk: http://tcl.sourceforge.net/faqs/tk/#listbox/multiple Any help would be greatly appreciated. Thanks, SK. PS: Is there any mechanism for submitting bug fixes and/or feature completions? I have a few simple ones that I wrote while using LTK...

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[ltk-user] new method listbox-delete
by Shawn Betts 28 Jun '07

28 Jun '07

Hi folks, I believe this is missing: (defgeneric listbox-delete (l start &optional end)) (defmethod listbox-delete ((l listbox) start &optional end) (check-type start (integer 0 *)) (format-wish "~a delete ~a ~a" (widget-path l) start (or end "end"))) If it isn't, what function should I be calling? :) -Shawn

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[ltk-user] Ltk examples
by Felip Alàez Nadal 28 Jun '07

28 Jun '07

Hello: I tried to rewrite the widget example program in ltk, but now I'm too busy to complete that work. I send 4 examples about ltk. You could add them to the ltk tarball if you want. I release them in the public domain. Bye! -- Felip Alàez Nadal

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[ltk-user] *wish* global
by Shawn Betts 24 Jun '07

24 Jun '07

Hi ltkers, Maybe I'm just not using it quite right, but I'm having trouble cleanly dealing with the *wish* global which, if i understand correctly, is let'd in several places to ensure that functions use the correct wish object. I'm using ltk along with some networking code and so I ltk's :server-event set to nil. The problem is I then have to bind *wish* properly whenever I update the gui from the network code. It's sort of clunky and frustrating. My suggestion: have some or all tk widgets contain a wish slot that stores the connection to wish. That way objects just do the right thing when you use them. For commands that don't require a widget, such as wish-exit, you explicitely pass an ltk-connection object that was given to you when you opened the connection. This seems closer to how clx works. -Shawn

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[ltk-user] writing a compound widget
by Russell McManus 13 Jun '07

13 Jun '07

Are there any examples around of how to write a compound widget in ltk? In particular, I'd like to try to write something like the Notebook widget that's available in perl/tk. -russ

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[ltk-user] Entry index
by mandeep singh 08 May '07

08 May '07

i've got a bit of a problem. I need to use the index function of the Entry widget to get back a line.char structure. but there doesnt seem to be any support for this, yet, so i thought to write it but i dont know the procedure to get ouput from wish. any help appreciated. thanks!

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[ltk-user] Just one frame?
by Johnny Zackrisson 27 Apr '07

27 Apr '07

hi. i've tryied to play with more dynamic aspects of the integration with ltk. now, i can use wish and fire of 'pack's for different objects, and wish will nicely display the new object within the current frame/window. when i try to do the same with ltk, i always get a new window/frame with the object inside it. i don't want this behaviour and it seems like ltk automatically adds some extra parameters to the call. i've tried a lot of ways, but haven't managed to get this working. there seems to be some magic behind the "master" slot, etc, and maybe it's the default behaviour that is my problem? serve-event seems needed to get rid of the "main-loop" thing (which annoys me incredibly). and while that works, it still do not display a new object, that's been asked to be displayed later on, within the same frame as before. anyone know how to get this working? by the way, i noticed that the examples is hooking into the main-loop with "with-ltk" without further arguments - is this just a compatibility thing for lisps without serve-event or threads? i've never designed guis before, but i want to "communicate" with the gui-subsystem of my application, not get hooked into it. i wanna say, "add this to window X now" and "add this handler for button y", without further interruptions. i don't want my lisp to be tight up in some -- seemingly -- very badly designed main-loop thing; i want protocol exchange and buffered communication. am i approaching this the wrong way? thanks, jz

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[ltk-user] menu widget
by phundamental unaudio 11 Apr '07

11 Apr '07

Could someone please show me a working example of an ltk menu? I cant get it to work..

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[ltk-user] Fix for entry-select
by Sudhir Shenoy 21 Mar '07

21 Mar '07

Peter, The function entry-select in ltk.lisp should use downcase in the format string. This is so that you can pass :begin or :end as the start or end of the range. The corrected function is appended below. Best regards, Sudhir (defun entry-select (e from to) ;; downcase the from and to indicators (cater for :begin and :end) (format-wish "~a selection range ~(~a~) ~(~a~)" (widget-path e) from to) e)

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