ltk-user

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259 discussions

[ltk-user] installing libimg on a ac
by Melanie Mitchell 14 Jul '11

14 Jul '11

Hello, I have recently started using ltk with CCL on a Mac (OS 10.6.8). I would like to be able to use the "load-image" command to display jpeg images without having to convert them to gif or ppm. I read on the web that "In order to use modern formats like PNG and JPEG you will need to install the libimg extension library for Tcl/Tk (e.g. in Ubuntu, you need to install the libtk-img package) and require the package before you use it." My question is, does anyone know how to install libimg on a mac so that I can "require" it from ltk? Thanks very much! Melanie

1 0

[ltk-user] installing
by Haris Bogdanovich 12 Jul '11

12 Jul '11

Hi. I installed ltk by asdf. I also installed tcl/tk binaries for Windowsl 95/NT from tcl.tk page. When I try (ltktest) the processor just goes to 50% and Lispwors stops working. Where is the problem ? Thanks

2 1

[ltk-user] Does LTK supports Cells or something similar?
by Matus Kmit 28 Jun '11

28 Jun '11

Hi My first question: Is there a way to search in all the archives of LTK mailing list? If yes, how one does do that? My second question LTK-related: Does LTK support Cells, or similar kind of auto-update mechanism? What i practically want to do is to have a global variable, whose change triggers the update of various widgets. Thank you Matus

3 2

[ltk-user] why MAKE-INSTANCE not exported
by Matus Kmit 27 Jun '11

27 Jun '11

Hi Sorry i am a newbie, but i have a question: What is the reason that MAKE-INSTANCE is not exported from the LTK package? Thank you matus

3 6

[ltk-user] Main window manipulation
by Vitaut Bayaryn 21 Jun '11

21 Jun '11

How can I use window manager functions (like wm-title) on the main window? What widget is the main window?

2 2

[ltk-user] Padding between text and border
by Louis Turk 01 Mar '11

01 Mar '11

Hi everyone, I have a small problem. When entering text into a text field, upon reaching the border a few letters will disappear beyond the border before the wrap takes place. Thus I can't see what is being typed for a few characters. How can I prevent this? Lou

2 1

[ltk-user] problems with menucheckbutton
by cage 19 Jan '11

19 Jan '11

Hello! Thank you for sharing this code, it works well and it is very simple to use! I am using ltk 0.91 and i am having trouble with the menucheckbutton, as far as i can understand this class does not specialize the (setf command) method so the only way to set a command for this widget is using the :initarg when the object is created, the problem is that this way the value of the button seems not to be passed to the function, this behaviour is different fron check-button widget that instead works as documentation specified. as far as i can see this code: (make-instance 'menucheckbutton :text "A" :command #'(lambda (x) (print x)) :name "mmodify" :master mmodify) is able to produce this tcl/tk code: 'path of the widget' add checkbutton -label {A} -variable mmodify -command {callback mmodify} So seems to me that the variable 'mmodify' have got the state of the button but i can not figure out how can i get its value from lisp code. My second question is: is there a public repository for the library? Thank you again. Bye. C.

2 4

[ltk-user] How can I read data from extension of some tk library?
by Pocket 24 Dec '10

24 Dec '10

Hello, I love to use Ltk. So I want to write some extension for tk library. I read Ltk source code. And I learned how to write Ltk extension. But, I cant find way to read data from *wish*, which returned by some command sended to *wish*. I find some function to read value in ltk.lisp (read-data) but this function isn't exported. So please tell me how to read data from *wish* in extension library of Ltk. -------------------------------------- Get the new Internet Explorer 8 optimized for Yahoo! JAPAN http://pr.mail.yahoo.co.jp/ie8/

2 1

[ltk-user] listbox updates from separate thread
by Kevin Raison 14 Dec '10

14 Dec '10

I have a listbox that needs to be updated periodically by a separate thread. However, I am having trouble figuring out how to make that happen. This code fails with a stream error, probably because the wish stream is not accessible to the spawned thread: (ltk:with-ltk (:debug 3) (let* ((update-threads nil) (f (make-instance 'ltk:frame)) (m1 (ltk:make-menubar)) (mf (ltk:make-menu m1 "File")) (call-queue-listbox (make-instance 'ltk:listbox :name "call_q" :master f :width 30 :height 12)) (exit-fn #'(lambda () (setq *shutdown-gui* t) (dolist (thread update-threads) (join-thread thread)) (setq update-threads nil) (setf ltk:*exit-mainloop* t))) (mf-exit (ltk:make-menubutton mf "Quit" exit-fn))) (ltk:pack f) (ltk:grid call-queue-listbox 0 0) (ltk:bind ltk:*tk* "<Alt-q>" (lambda (event) (declare (ignore event)) (funcall exit-fn))) (push (make-thread #'(lambda () (loop until *shutdown-gui* do (ltk:listbox-clear call-queue-listbox) (dotimes (i (random 10)) (ltk:listbox-append call-queue-listbox (format nil "call ~A in queue" i))) (sleep 1)))) update-threads))) Can someone show me the correct ltk idiom for this? Thanks! -Kevin

2 2

[ltk-user] timer event?
by Blond BF 29 Nov '10

29 Nov '10

How can I destroy window containing the error message after 5 seconds from displaying it?

2 2

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