find out what Shoes.APPS[] and app are.

appexplore.rb

# explore APPS and app (s)
# don't name anything as 'app' unless you enjoy confusion

class Shoes::Types::App
  def myinspect(target, from)
    puts "For #{target.name} (from #{app.name})"
    #puts "app and from are same object: #{target === app}"
    puts "instance vars"
    puts "#{target.inspect}"
    puts target.instance_variables
  end
  
  def mynew_ivar(target, name, value)
    target.instance_variable_set(name,value)
  end
  
  def mybinding
    target.binding()
  end 
end

Shoes.app title: "Home" do
  $var_incr = 0
  para "Be Confused"
  window title: "Not_Home" do
    stack do
      button "info" do
        para "#{Shoes.APPS.inspect}\n"
        para "owner = #{owner}\n"
        para "me = #{app.inspect}\n"
      end
      button "launch" do
        $var_incr = $var_incr + 1
        window title: "really not home #{$var_incr}" do
          stack do
            apps = Shoes.APPS
            para "#{Shoes.APPS.inspect}\n"
            para "owner = #{owner}\n"
            para "me = #{app.inspect}\n"
            stack do
              apps.each do |item| 
                ivarstr = "@iv#{$var_incr+10}"
                flow do
                  button "show #{item.name}" do
                    myinspect(item, app)
                  end
                  button "add @ivar" do
                    mynew_ivar(item, "@iv#{$var_incr+10}", "initial value")
                  end
                  button "create alert @ivar" do
                    cmd = "button \"show #{ivarstr}\"  do alert \"\#\{#{ivarstr}\}\" end"
                    puts cmd
                    item.instance_eval(cmd)
                  end
                end
              end 
            end
          end
        end
      end
    end
  end
  stack do
    para "#{Shoes.APPS.inspect}"
    para "owner = #{owner}"
    para "me = #{app.inspect}"
  end
end