Hello LTK users,
As a complete GUI programming newbie I wanted to try LTK, but immediately have several questions:
1. Are there any example programs using LTK?
2. I don't know anything about Tk, unfortunately. Is there some tutorial to GUI programming with Tk?
3. My current goal is to have a small window which displays a new random number whenever I press a button. I thought about using message/textvariable in the following code snippet:
(defun zufallszahl () (with-ltk () (let* ((x "0") (f (make-instance 'frame)) (text (make-instance 'message :text x :width 100)) (button (make-instance 'button :master f :text "Next" :command (lambda () (setq x (format nil "~D" (random 10))))))) (pack f) (pack text :side :top) (pack button :side :bottom) (configure f :borderwidth 3) (configure f :relief :sunken) )))
Unfortunately, (make-instance 'message :textvariable x :width 100) does not work. Is this a bug?
4. How can I put the message above the button? I tried several combinations of :side XXX, none did achieve it.
5. How can I change the text of the message into something larger?
Thank you very much for any hints,
Nicolas