Closing a window with user input

I'm using Cidiomar's Input script: http://www.rpgmakervxace.net/topic/2551-rgss3-input-full-utf8input-error-found-and-fixed/

and Hime's script that checks for if any is pressed: http://himeworks.com/2014/11/checking-if-any-key-is-pressed/

I have a pop up window with some information that inherits Window_Base. I would like for this window to remain visible until the player presses any key. The key that is pressed will be stored in a variable and the window disposes itself. I know I can get this by:

Spoiler

Code:

if Input.any_key_pressed? == true  if Input.pressed?(:LETTER_A)    storedkey = :LETTER_A  end  if Input.pressed?(LETTER_    storedkey = :LETTER_B  end  ...... etc

However, this pop up window is called through a menu. When I press return on the command that makes this window pop up, it automatically registers it as a key press for this new method that creates the pop up window and asks for input.

Here is an example of the script I'm using:

Spoiler

Code:

# Init info for bottom windowclass Bottom_Info_Window < Window_Command  def window_width    return 544  end   def window_height    return 366  end   def col_max    return 1  end   def alignment    return 1 # center alignment  end   def make_command_list    add_command("Option 2", :option2)  end end# Init info for top windowclass Top_Command_Window < Window_Command  def window_width    return 544  end  def window_height    return 50  end   def col_max    return 3  end   def alignment    return 1  end   def make_command_list    add_command("Option 1", :option1)  endend# init info for window that pops upclass Window_Popup < Window_Base  def initialize    super(50, 200, 450, 150)  end        def change_text(text)    return unless text.is_a?(String)    contents.clear    draw_text(text, 0, 0, 450, 150)  end   def draw_text(text, x, y, text_width, text_height, alignment = 1)    contents.draw_text(x, y, text_width, text_height, text, alignment)  endend# Creates windows and contains command methodsclass Test_Menu < Scene_MenuBase  def start    super    create_background    create_windows  end   def create_windows    @keyinfowindow = Bottom_Info_Window.new(0, 50)    @keyinfowindow.set_handler(:option2, method(:option2))    @keyinfowindow.set_handler(:cancel,    method(:undowindow))    @keywindow = Top_Command_Window.new(0, 0)    @keywindow.set_handler(:option1, method(:option1))    @keywindow.set_handler(:cancel,    method(:return_scene))    @keyinfowindow.active = false  end   def undowindow    @keywindow.active = true    @keyinfowindow.active = false  end      def option2    @popwindow = Window_Popup.new    @popwindow.change_text("Press a key to close this window.")    if Input.any_key_pressed? == true  # problem area - this is where I'm having      $storedkey = pressed()           # difficulty.      @popwindow.dispose                     @popwindow = nil      @keyinfowindow.active = true      p $storedkey    end  end   def option1    @keyinfowindow.active = true    @keywindow.active = false  end   def pressed    if Input.press?(:LETTER_Q)      return ':Q'    elsif Input.press?(:LETTER_R)      return ':R'    elsif Input.press?(:RETURN)      return ':RETURN'    end  endend

It's around line 88, the option2 method that is causing me a headache. When I leave it as shown, the if conditional is ran through (I'm assuming because of the return key being pressed to get to this method is still being processed as a key being pressed due to have fast the script is running through) and the window disposes very quickly. How do I go about the script waiting at this point in time for further user input instead of using the return key from accessing this method?