fxruby users - Jun 2006 - setCurrent switcher index out of bounds problem

On Tue, 06 Jun 2006 09:49:56 +0200, Axel Etzold <AEtzold at gmx.de> wrote
:
> Now, I need to add the possibility to switch between
> different layers of the right pane, just like in the
> shutter.rb application, where you press one of the
> ShutterButtons on the left to have that behaviour.
OK.
> Then, I get the error below.
> What is the problem here ?
Looking at your code example, I don''t see where you''re
actually adding any
content to the switcher. It''s empty, so when you tell it to switch to a
different page (by setting @switcher.current to a new value) you''re
getting
an error.

Dear Meinrad,
Dear Lyle,

thank you for your responses.
Meinrad: my problem was not so much to identify
an error line number, but to get some grasp
of what constant actually does what in FXRuby.
This generates a lot of silly questions to more
experienced people, of course. Sorry for that.

So I find that in any learning process, 
redundancy is a good thing. It may be very
nice to have one example for each particular
behaviour FXRuby offers, but if you''re learning it,
this may not be enough to disambiguate the
silly things one thinks a program does from
those that actually happen.
I am just starting FXRuby now, but I use
Ruby for command-line things for a longer
period of time. It is the first language
I feel I can talk about serious things to a computer -
otherwise, in university maths studies, you may well
 acquire computer knowledge like other people learn
Old Greek or Sanskrit: not much practical
use in today''s Greece or India ...
So I''d suggest to you FXRuby experts to write a
book like Hal Fulton''s The Ruby Way - plenty of
code for disambiguation ... . There really may
be a need for it, as amazon doesn''t show me any
book entirely about FOX or FXRuby. (I know of
Ruby Developer''s guide, but here FXRuby is one
of many topics.)

Then again, I''ve got another question I couldn''t find
an answer to :
In one field of an FX4Splitter, I want to display a PNG
image.
I know how to do this (basically) from the imageviewer.rb
file.
But the image I display needs to be generated first
(by Gnuplot ... no problem to output PNG from there,
except one: to set the size : I don''t know what
to tell Gnuplot there:
- how do I see what the size of that

 @imageview_rec = FXImageView.new(@topFrame_rec, nil, nil, 0,
      LAYOUT_FILL_X|LAYOUT_FILL_Y)

is ?
I tried   
    p @imageview_rec.getHeight
    p @imageview_rec.getWidth

but that gives me 1 and 1.

Thank you and sorry for my annoying questions,

Best regards,

Axel






>?-------- Original-Nachricht --------
>?Datum: 6 Jun 2006 14:02:09 -0000
>?Von: "lyle at knology.net" <lyle at knology.net>
>?An: fxruby-users at rubyforge.org
>?Betreff: Re: [fxruby-users] setCurrent switcher index out of bounds problem
>?&#xA> On Tue, 06 Jun 2006 09:49:56 +0200, Axel Etzold <AEtzold at
gmx.de> wrote :
> 
> > Now, I need to add the possibility to switch between
> > different layers of the right pane, just like in the
> > shutter.rb application, where you press one of the
> > ShutterButtons on the left to have that behaviour.
> 
> OK.
> 
> > Then, I get the error below.
> > What is the problem here ?
> 
> Looking at your code example, I don''t see where you''re
actually adding any
> content to the switcher. It''s empty, so when you tell it to switch
to a
> different page (by setting @switcher.current to a new value)
you''re
> getting
> an error.
> _______________________________________________
> fxruby-users mailing list
> fxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/fxruby-users
-- 


Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
Ideal f?r Modem und ISDN: http://www.gmx.net/de/go/smartsurfer

On 6/7/06, Axel Etzold <AEtzold at gmx.de> wrote:
> Dear Meinrad,
> Dear Lyle,
>
> thank you for your responses.
> Meinrad: my problem was not so much to identify
> an error line number, but to get some grasp
> of what constant actually does what in FXRuby.
> This generates a lot of silly questions to more
> experienced people, of course. Sorry for that.
i''m sorry because i did not understand your question right and
therefore gave a answer that was not helpful. Anyway, I am not an
expert in FXRuby. lyle is the real expert. i am just trying my best to
give my experience to people who are new to FXRuby.

[...]
>
> Then again, I''ve got another question I couldn''t find
> an answer to :
> In one field of an FX4Splitter, I want to display a PNG
> image.
> I know how to do this (basically) from the imageviewer.rb
> file.
> But the image I display needs to be generated first
> (by Gnuplot ... no problem to output PNG from there,
> except one: to set the size : I don''t know what
> to tell Gnuplot there:
> - how do I see what the size of that
>
>  @imageview_rec = FXImageView.new(@topFrame_rec, nil, nil, 0,
>       LAYOUT_FILL_X|LAYOUT_FILL_Y)
>
> is ?
> I tried
>     p @imageview_rec.getHeight
>     p @imageview_rec.getWidth
>
> but that gives me 1 and 1.
i also often had the problem that a widget did not give back it''s real
size but 1x1 instead. maybe making a layoutcontainer (verticalframe or
packer) around the imageview might help. then you can get the
containers width and height.
>
> Thank you and sorry for my annoying questions,
they are not at all annoying. ;)

-- henon

Dear all,

in a GUI, I have a help window with some text and a
Menu toolbar button quite similar to that of textedit.rb:
a help window of class FXDialog appears, displays a
help text, and if you don''t need it anymore, there is
a button to close it. This works :)
But when the user wants to see the help window again,
and re-presses the menubar help button, the whole
program exits saying:


c:/axelhome/ngui/f30.rb:686:in `show'': This FXDialogBox * already
released (RuntimeError)
	from c:/axelhome/ngui/f30.rb:686:in `onCmdShowHelp''
	from c:/axelhome/ngui/f30.rb:893:in `runme''
	from c:/axelhome/ngui/f30.rb:902

This is the function I used :

class MainWindow

 def initialize
    ...
    # Help window

    # init HelpWindow as in helpwindow.rb required by textedit.rb
    @helpwindow = HelpWindow.new(self)
 end
 # Show help window
  def onCmdShowHelp(sender, sel, ptr)
    @helpwindow.show(PLACEMENT_CURSOR)  # line that generated the error.
    return 1
  end
end

How can I make help re-accessible ? In textedit.rb this works,
but I don''t know why.

Thank you,

Best regards,

Axel 
-- 


Echte DSL-Flatrate dauerhaft f?r 0,- Euro*!
"Feel free" mit GMX DSL! http://www.gmx.net/de/go/dsl

On 6/9/06, Axel Etzold <AEtzold at gmx.de> wrote:
> Dear all,
>
> in a GUI, I have a help window with some text and a
> Menu toolbar button quite similar to that of textedit.rb:
> a help window of class FXDialog appears, displays a
> help text, and if you don''t need it anymore, there is
> a button to close it. This works :)
> But when the user wants to see the help window again,
> and re-presses the menubar help button, the whole
> program exits saying:
>
>
> c:/axelhome/ngui/f30.rb:686:in `show'': This FXDialogBox * already
released (RuntimeError)
>         from c:/axelhome/ngui/f30.rb:686:in `onCmdShowHelp''
>         from c:/axelhome/ngui/f30.rb:893:in `runme''
>         from c:/axelhome/ngui/f30.rb:902
>
> This is the function I used :
>
> class MainWindow
>
>  def initialize
>     ...
>     # Help window
>
>     # init HelpWindow as in helpwindow.rb required by textedit.rb
>     @helpwindow = HelpWindow.new(self)
>  end
>  # Show help window
>   def onCmdShowHelp(sender, sel, ptr)
>     @helpwindow.show(PLACEMENT_CURSOR)  # line that generated the error.
>     return 1
>   end
> end
>
> How can I make help re-accessible ? In textedit.rb this works,
> but I don''t know why.
>
> Thank you,
>
> Best regards,
>
> Axel
axel,

there are two ways to do it:
1) not destroying the window just hiding it.
2) calling create everytime you want to show it again.
hth,
-- henon

I would like to set up a container of properties, just as
there is one in the "properties" section of the splitter
window in foxGUIb.
I managed to do this using a function much like the
make_container and add_prop_manipulator methods of foxGUIb.rb,
respectively its required files.

Now, I need to be able to set some of those properties
as checked or unchecked and to attach some methods to them.
For instance, I have a two property fields
for two- and three-dimensional data sets.
Now, if the two-dimensional property is checked,
I''d like to uncheck a property for z-axis name automatically.

How could this be done ?

Thank you very much,

Best regards,

Axel 
-- 


Echte DSL-Flatrate dauerhaft f?r 0,- Euro*!
"Feel free" mit GMX DSL! http://www.gmx.net/de/go/dsl