fxruby users - Jun 2009 - Learning FXRuby please help!

Hi all,

I''m trying to get text on to the screen in response to pressing a
button. This code doesn''t work, and I don''t know why. My puts
command
says that the window is shown, but it''s not displayed.

Also, it seems to me that there should be an easier way to get text on a
screen in response to pressing a button. Any hints?  Thanks!

Marlene

require ''fox16''
include Fox

class Lookup < FXMainWindow
  def initialize(app)
    super(app, "Lookup window", :width=>400, :height=>600,
    :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
    bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
    hearButton = FXButton.new(bframe, "Do you hear me?")
    yesWindow = FXHorizontalFrame.new(self, :opts =>
      FRAME_GROOVE|LAYOUT_FILL_X)
    yesLabel = FXLabel.new(yesWindow,"Yes")
    yesWindow.hide
    puts "window shown?" + yesWindow.shown?.to_s
    hearButton.connect(SEL_COMMAND) do |sender,sel, data|
      yesWindow.create
      yesWindow.show
      puts "pushed hear button"
      puts "window shown?" + yesWindow.shown?.to_s
    end
  end

  def create
    super
    show(PLACEMENT_SCREEN)
  end

end

if __FILE__ == $0
  FXApp.new do |app|
    Lookup.new(app)
    app.create
    app.run
  end
end

fxruby-users-bounces at rubyforge.org wrote:
> Hi all,
> 
> I''m trying to get text on to the screen in response to pressing a
> button. This code doesn''t work, and I don''t know why. My
puts command
> says that the window is shown, but it''s not displayed.  
> 
> Also, it seems to me that there should be an easier way to get text
> on a screen in response to pressing a button. Any hints?  Thanks! 
> 
> Marlene
> 
> require ''fox16''
> include Fox
> 
> class Lookup < FXMainWindow
>   def initialize(app)
>     super(app, "Lookup window", :width=>400, :height=>600,
>     :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
>     bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
>     hearButton = FXButton.new(bframe, "Do you hear me?")
>     yesWindow = FXHorizontalFrame.new(self, :opts =>
>       FRAME_GROOVE|LAYOUT_FILL_X)
>     yesLabel = FXLabel.new(yesWindow,"Yes")
>     yesWindow.hide
>     puts "window shown?" + yesWindow.shown?.to_s
>     hearButton.connect(SEL_COMMAND) do |sender,sel, data|
>       yesWindow.create
>       yesWindow.show
>       puts "pushed hear button"
>       puts "window shown?" + yesWindow.shown?.to_s
>     end
>   end
> 
>   def create
>     super
>     show(PLACEMENT_SCREEN)
>   end
> 
> end
> 
> if __FILE__ == $0
>   FXApp.new do |app|
>     Lookup.new(app)
>     app.create
>     app.run
>   end
> end
> 
> 
> _______________________________________________
> fxruby-users mailing list
> fxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/fxruby-users
Hi,

You needed a call to self.recalc...

Best regards,

Philippe Lang

------------

require ''fox16''
include Fox

class Lookup < FXMainWindow
  def initialize(app)
    super(app, "Lookup window", :width=>400, :height=>600,
    :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
    bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
    hearButton = FXButton.new(bframe, "Do you hear me?")
    yesWindow = FXHorizontalFrame.new(self, :opts =>
      FRAME_GROOVE|LAYOUT_FILL_X)
    yesLabel = FXLabel.new(yesWindow,"Yes")
    yesWindow.hide
    puts "window shown?" + yesWindow.shown?.to_s
    hearButton.connect(SEL_COMMAND) do |sender,sel, data|
      #yesWindow.create NOT NEEDED
      self.recalc
      yesWindow.show
      puts "pushed hear button"
      puts "window shown?" + yesWindow.shown?.to_s
    end
  end

  def create
    super
    show(PLACEMENT_SCREEN)
  end

end

if __FILE__ == $0
  FXApp.new do |app|
    Lookup.new(app)
    app.create
    app.run
  end
end

fxruby-users-bounces at rubyforge.org wrote:
> Thanks for your help! Why do I need the self.recalc? 
I have to say I don''t know exactly. I thought a self.repaint or
self.update would be sufficient, since your frame is only hidden and
then shown. As a first guess, I would have said that you need a recalc
when you create controls "dynamically", and need to invalidate the
window structure. But your example shows that I''m wrong!

For sure, Lyle or Jeroen have the answer!
> And do you have
> a good source for me to read about this kind of thing so I don''t
need
> to keep asking "confused beginner" questions?
Lyle has written a book: http://www.pragprog.com/titles/fxruby/fxruby

Otherwise you have examples here:
http://www.fxruby.org/doc/examples.html

... And the API reference: http://www.fxruby.org/doc/api/

Best regards,

Philippe Lang

Thanks for your help! Why do I need the self.recalc? And do you have a
good source for me to read about this kind of thing so I don''t need to
keep
asking "confused beginner" questions?

Thanks again for your input. I''ve read through Lyle''s book,
which is
where I''m trying to learn FXRuby from. It''s a great book, but
I don''t see
where there''s anything about using self.recalc.

While trying to solve this problem, I also tried to create the window in
the button block, and it didn''t work. I just now tried adding your
self.recalc code, and it still
doesn''t show. Clearly I''m missing something that should be
obvious!

class Lookup < FXMainWindow
  def initialize(app)
    super(app, "Lookup window", :width=>400, :height=>600,
    :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
    bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
    hearButton = FXButton.new(bframe, "Do you hear me?")
    hearButton.connect(SEL_COMMAND) do |sender,sel, data|
      @yesWindow = FXHorizontalFrame.new(self, :opts =>
FRAME_GROOVE|LAYOUT_FILL_X)
      yesLabel = FXLabel.new(@yesWindow,"Yes")
      self.recalc
      @yesWindow.show
      puts "pushed hear button"
      puts "window shown? " + @yesWindow.shown?.to_s
    end
  end

fxruby-users-bounces at rubyforge.org wrote:
> Thanks again for your input. I''ve read through Lyle''s
book, which is
> where I''m trying to learn FXRuby from. It''s a great book,
but I don''t
> see where there''s anything about using self.recalc.  
> 
> While trying to solve this problem, I also tried to create the window
> in the button block, and it didn''t work. I just now tried adding
your
> self.recalc code, and it still doesn''t show. Clearly I''m
missing
> something that should be obvious!   
> 
> class Lookup < FXMainWindow
>   def initialize(app)
>     super(app, "Lookup window", :width=>400, :height=>600,
>     :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
>     bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
>     hearButton = FXButton.new(bframe, "Do you hear me?")
>     hearButton.connect(SEL_COMMAND) do |sender,sel, data|
>       @yesWindow = FXHorizontalFrame.new(self, :opts =>
> FRAME_GROOVE|LAYOUT_FILL_X)
>       yesLabel = FXLabel.new(@yesWindow,"Yes")
>       self.recalc
>       @yesWindow.show
>       puts "pushed hear button"
>       puts "window shown? " + @yesWindow.shown?.to_s
>     end
>   end
When you create controls dynamically, don''t forget to call
"create",
like this:

require ''fox16''
include Fox

class Lookup < FXMainWindow
  def initialize(app)
    super(app, "Lookup window", :width=>400, :height=>600,
    :opts => DECOR_ALL|LAYOUT_FILL_X|LAYOUT_FILL_Y)
    bframe = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X)
    hearButton = FXButton.new(bframe, "Do you hear me?")
    hearButton.connect(SEL_COMMAND) do |sender,sel, data|
      @yesWindow = FXHorizontalFrame.new(self, :opts =>
FRAME_GROOVE|LAYOUT_FILL_X)
      yesLabel = FXLabel.new(@yesWindow,"Yes")
      @yesWindow.create
      self.recalc
      @yesWindow.show
      puts "pushed hear button"
      puts "window shown? " + @yesWindow.shown?.to_s
    end
  end

  def create
    super
    show(PLACEMENT_SCREEN)
  end

end

if __FILE__ == $0
  FXApp.new do |app|
    Lookup.new(app)
    app.create
    app.run
  end
End

Best regards,

Philippe Lang
Attik System

That fixed this problem - your help has been invaluable.

All of this is still rather confusing. So now I tried to layout the
yesWindow on the bottom of the screen with a LAYOUT_BOTTOM when I define
the yesWindow, but it still appears immediately under my buttons. Any
clues what''s happening there?

    hearButton.connect(SEL_COMMAND) do |sender,sel, data|
      @yesWindow = FXHorizontalFrame.new(self,
        :opts => FRAME_GROOVE|LAYOUT_FILL_X|LAYOUT_BOTTOM)
      yesLabel = FXLabel.new(@yesWindow,"Yes")


I sure appreciate your time and help on this.

Marlene Phillips

On Jun 24, 2009, at 3:05 AM, Marlene Phillips wrote:
> All of this is still rather confusing. So now I tried to layout the
> yesWindow on the bottom of the screen with a LAYOUT_BOTTOM when I  
> define
> the yesWindow, but it still appears immediately under my buttons. Any
> clues what''s happening there?
Replace LAYOUT_BOTTOM with LAYOUT_SIDE_BOTTOM:

	@yesWindow = FXHorizontalFrame.new(self,
		:opts => FRAME_GROOVE|LAYOUT_FILL_X|LAYOUT_SIDE_BOTTOM)

Hope this helps,

Lyle

Again, thanks Lyle for this help, it solved the problem. Is there
somewhere I can find more details on what each of these hints in the API
means? For example, I''m afraid I don''t know the distinction
between
"Stick on bottom" (LAYOUT_BOTTOM) and "Pack on bottom"
(LAYOUT_SIDE_BOTTOM). And even though I now know that
I need to pack the window on the bottom, when I try to read the
documentation and see something like "Stick on bottom" I
don''t know that
I should be looking for
anything else. I''d love any info on a reference to deciphering some of
the terser explanations here.  Thanks!

On Jun 24, 2009, at 3:26 PM, Marlene Phillips wrote:
> Again, thanks Lyle for this help, it solved the problem. Is there
> somewhere I can find more details on what each of these hints in the  
> API
> means? For example, I''m afraid I don''t know the
distinction between
> "Stick on bottom" (LAYOUT_BOTTOM) and "Pack on bottom"
> (LAYOUT_SIDE_BOTTOM). And even though I now know that
> I need to pack the window on the bottom, when I try to read the
> documentation and see something like "Stick on bottom" I
don''t know
> that
> I should be looking for anything else. I''d love any info on a  
> reference to deciphering some of
> the terser explanations here.
To tell you the truth, it''s unclear to me (from a cursory examination  
of the FOX source code) exactly what is the distinction between  
LAYOUT_BOTTOM and LAYOUT_SIDE_BOTTOM (and other similar pairs of  
layout hints). There is perhaps some better explanation at the FOX  
home page:

	http://www.fox-toolkit.org/

but that web site is not responding at this time. Maybe Jeroen will  
chime in with some illuminating words...

-- Lyle