Re: undefined method??

I am not sure what this is, exactly, but you've written your callbacks as:

> =C2=A0 =C2=A0b1=3DTkButton.new(top) {text 'MSG' ;command {MyForm.domsg} ;=
pack ph}
> =C2=A0 =C2=A0b2=3DTkButton.new(top) {text 'EXIT';command {MyForm.doexit};=
pack ph}

Note that you wrote "MyForm.domsg". This says, "invoke the #domsg
method from the MyForm class". However, you've defined #domsg as an
instance method, not a class method, so Ruby is right: #domsg is
undefined on the MyForm class.

~ jf
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John Feminella
Principal Consultant, BitsBuilder
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On Thu, Sep 8, 2011 at 17:18, Joe Collins <[e-mail]> wrote:
> When I press MSG or EXIT buttons I get undefined method errrs for the
> programs domsg and doexit respectively. They are public methods so they
> should be quite visible. Code follows - pls tell what I am doing wrong.
> thanks in advance.
>
> Joe
>
> class MyForm
> =C2=A0def domsg
> =C2=A0 =C2=A0 puts "domsg called"
> =C2=A0 =C2=A0 lbl.configure("text"=3D>"Goodbye cruel world\nGoing down re=
al soon")
> =C2=A0 =C2=A0 t=3DTime.now.asctime
> =C2=A0 =C2=A0 t=3Dt.split(" ")
> =C2=A0 =C2=A0 puts t[0]+" "+t[1]+" "+t[2]+" "+t[3]
> =C2=A0end
> =C2=A0def doexit
> =C2=A0 =C2=A0 puts "doexit called"
> =C2=A0 =C2=A0 t=3DTime.now.asctime
> =C2=A0 =C2=A0 t=3Dt.split(" ")
> =C2=A0 =C2=A0 puts t[0]+" "+t[1]+" "+t[2]+" "+t[3]
> =C2=A0 =C2=A0 puts "....going down!.....crash!"
> =C2=A0 =C2=A0 exit
> =C2=A0end
> =C2=A0def initialize
> =C2=A0 =C2=A0ph=3D {'padx' =3D>10, 'pady' =3D>10}
> =C2=A0 =C2=A0root=3DTkRoot.new { title "NEAT!" }
> =C2=A0 =C2=A0@variable1 =3D TkVariable.new
> =C2=A0 =C2=A0@variable2 =3D TkVariable.new
> =C2=A0 =C2=A0top =3D TkFrame.new{root;(height 250;width 250)}
> =C2=A0 =C2=A0lbl=3DTk::Tile::Label.new(top) {
> =C2=A0 =C2=A0 =C2=A0text 'Hello World! This is really neat stuff!'
> =C2=A0 =C2=A0}
> =C2=A0 =C2=A0lbl.place('height' =3D>35,
> =C2=A0 =C2=A0 =C2=A0'width' =C2=A0=3D>200,
> =C2=A0 =C2=A0 =C2=A0'x' =C2=A0 =C2=A0 =C2=A0=3D>35,
> =C2=A0 =C2=A0 =C2=A0'y' =C2=A0 =C2=A0 =C2=A0=3D>65
> =C2=A0 =C2=A0)
> =C2=A0 =C2=A0@entry1=3DTkEntry.new{top;textvariable @variable1; pack(ph)}
> =C2=A0 =C2=[e-mail]('height' =3D> 25,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'width' =C2=A0=3D> 150,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'x' =C2=A0 =C2=A0 =C2=A0=
=3D> 10,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'y' =C2=A0 =C2=A0 =C2=A0=
=3D> 10)
> =C2=A0 =C2=[e-mail](ph)
> =C2=A0 =C2=A0@entry2=3DTkEntry.new{top;textvariable @variable2; pack(ph)}
> =C2=A0 =C2=[e-mail]('height' =3D> 25,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'width' =C2=A0=3D> 150,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'x' =C2=A0 =C2=A0 =C2=A0=3D> 10,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'y' =C2=A0 =C2=A0 =C2=A0=3D> 40)
> =C2=A0 =C2=[e-mail](ph)
> =C2=A0 =C2=A0b1=3DTkButton.new(top) {text 'MSG' ;command {MyForm.domsg} ;=
pack ph}
> =C2=A0 =C2=A0b1.place('height' =3D>25,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'width' =C2=A0=3D>100,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'x' =C2=A0 =C2=A0 =C2=A0=3D>50,
> =C2=A0 =C2=A0'y' =C2=A0 =C2=A0 =3D>100)
> =C2=A0 =C2=A0b2=3DTkButton.new(top) {text 'EXIT';command {MyForm.doexit};=
pack ph}
> =C2=A0 =C2=A0b2.place('height' =3D>25,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'width' =C2=A0=3D>100,
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0'x' =C2=A0 =C2=A0 =C2=A0=3D>50,
> =C2=A0 =C2=A0'y' =C2=A0 =C2=A0 =3D>150)
> =C2=A0 =C2=A0top.pack('fill'=3D>'both', 'side' =3D>'top')
> =C2=A0 =C2=A0end
> end
> MyForm.new
> tk.mainloop
>
> --
> Posted via http://www.ruby-forum.com/.
>
>