From: "J.Hawkesworth" <J.Hawkesworth@...>
Date: 2002-07-17T00:08:16+09:00
Subject: RE: TkText no -textvariable workaround?

I think what Tom is after is a neat way to have the widget's display
automatically whenever the value of some variable is changed.  I've a
vague recollection of hitting this problem sometime ago (using Tk with
perl) but I think I just bodged my way round the problem by using a
different widget.  Or I may have written a lot of code that sent delete
messages etc.
cheers,
Jon

-----Original Message-----
From: Peter Hickman [mailto:peter@semantico.com]
Sent: 16 July 2002 15:29
To: ruby-talk ML
Subject: Re: TkText no -textvariable workaround?


Tom Sawyer wrote:

>well, i've been busy adding tk support to my gui template tool (Miter),
>but i've sadly come across a limitation with the TkText widget. it
>dosen't support -textvariable, hence there's no way to bind it to a
ruby
>instance variable, as i can with all the other widgets. i did figure
out
>a way of automatically set the instance varaible when the TkText value
>changes using bind. but i can not find a way to do the reverse. how do
i
>get the TkText's value to automatically change when the instance
>variable does? i looked to see if there's was a ruby callback method
for
>such, but i didn't find one. anyone?
>

With TkText you go...

@text = TkText.new(... blah blah blah ...)

and then later on you can go

@text.value
@text.delete(1.0,'end')

and all that jazz.

is that what you wanted?



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