【Ruby】【Tk】ボタンが押されたら 所定の関数を実行させたい

Question

お世話になっております

コードで ボタンをクリックすると

NameError: unknown option 'test3' for #<Tk::Button:0x0000000004f951b0 @path=".w00000.w00001"> (deleted widget?)
---< backtrace of Ruby side >-----
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:4984:in rescue in method_missing' C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:4980:in method_missing'
(eval):1:in block (2 levels) in initialize' f:/files/tempCodeRunnerFile.ruby:20:in eval'
f:/files/tempCodeRunnerFile.ruby:20:in block (2 levels) in initialize' C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1456:in eval_cmd'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1456:in cb_eval' C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1403:in call'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1607:in block in callback' C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1606:in catch'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1606:in callback' C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1301:in mainloop'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/tk-0.2.0/lib/tk.rb:1301:in `block in module:TkCore'
---< backtrace of Tk side >-------
invoked from within
"rb_out c00001"
invoked from within
".w00000.w00001 invoke"
("uplevel" body line 1)
invoked from within
"uplevel #0 [list $w invoke]"
(procedure "tk::ButtonUp" line 24)
invoked from within
"tk::ButtonUp .w00000.w00001"
(command bound to event)

と 出ます

require 'tk'
require 'tkafter'

class Display
    def initialize
        ph = { 'padx' => 10, 'pady' => 10 }   
        @myFont = TkFont.new("family" => 'Helvetica',"size" => 13,"weight" => 'bold')

        @text1 = TkVariable.new 
        @text2 = TkVariable.new 
        @text3 = TkVariable.new 
        @text4 = TkVariable.new

        @root = TkRoot.new 
        @root.geometry = "100x100+75+0"
        @top = TkFrame.new(@root , 'background' => '#FFFFF7')

        #eval("test3()")
        TkButton.new(@top) {text 'Exit'; command proc  { eval("test3()")}; pack ph}
        @top.pack('fill'=>'both', 'side' =>'top')
        
        show

    end 

    def show()
        @root.mainloop
    end

    def test()
        print ('OK!')
    end    

    def test2()
        print ('OK!!')
    end

    def test3()
        eval ("test()")
        eval ("test2()") 
        exit      
    end

end



Display.new

TkButton.new(@top) {text 'Exit'; command proc { eval("test3()")}; pack ph}
で ボタンを押すと 関数が 実行されるようにしたいのですが
どのような修正を すれば よいのでしょうか？

TkButton.new(@top) {text 'Exit'; command proc { test3()}; pack ph}
も試しましたが やはりエラーが発生します

ご教示の程よろしくお願い致します

Answer 1

this = self
TkButton.new(@top) {text 'Exit'; command proc  { this.test3 }; pack ph}

Comments

[Reach]

ありがとうございました！

exit
を
TkRoot.destroy
にしたところ 他のエラーも 表示されなくなりました