Hi,
I am a beginner at both ltk and tk and I am trying to convert a small programme
from Tk to LTk.
Tk version:
pack [button .b -text "Push Me" -background red -command {tk_messageBox -message "hello, world"}]
LTk version:
(with-ltk ()
(let ((my-button
(make-instance 'text :text "Push Me"
:background :red
:command
(lambda () (message-box "Hello, world!" "message"
'ok 'info)))))
(pack my-button)))
The Tk version works fine, whereas the LTk version gives the following error:
Invalid initialization argument:
:BACKGROUND
in call for class #<STANDARD-CLASS BUTTON>.
See also:
The ANSI Standard, Section 7.1.2
[Condition of type INITARG-ERROR]
On the other hand, there is no error if the :background line is removed.
It's as if the :background keyword is only allowed for a few specific widgets,
like the text widget. I also get errors if I try to set it with configure,
as shown in the LTk manual, e.g. (configure my-button :background :blue)
What am I doing wrong ?
Any help is appreciated, I am using tk8.5 on debian squeeze, with sbcl 1.0.55,
and the current release of ltk that ships with quicklisp.
Sincerely,
--
harven
