title: PySimpleGui how to make plot in canvas without it appearing also in seperate window
body: <p>Problem: My plot appears on the canvas inside the window, but also a separate window figure gets created with the plot.
  I would like remove that extra window, since it seems that it is taking resources and time and maybe makes the system occasionally to stop responding.</p>
  <p>Help would be appreciated, here is a sample of my code that reproduces the problem.</p>
  <p>Code sample:</p>
  <pre><code>import matplotlib.pyplot as plt
  from os import path
  import matplotlib
  from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
  matplotlib.use(&quot;TkAgg&quot;)
  import pickle
  from numpy import arange
  import PySimpleGUI as sg
  
  def draw_figure_w_toolbar(canvas, fig, canvas_toolbar):
      if canvas.children:
          for child in canvas.winfo_children():
              child.destroy()
      if canvas_toolbar.children:
          for child in canvas_toolbar.winfo_children():
              child.destroy()
      figure_canvas_agg = FigureCanvasTkAgg(fig, master=canvas)
      figure_canvas_agg.draw()
      toolbar = Toolbar(figure_canvas_agg, canvas_toolbar)
      toolbar.update()
      figure_canvas_agg.get_tk_widget().pack(side='right', fill='both', expand=1)
  
  
  class Toolbar(NavigationToolbar2Tk):
      def __init__(self, *args, **kwargs):
          super(Toolbar, self).__init__(*args, **kwargs)
  
  data_folder = ''
  filename = 'plot_data.p'
  [t0,p0, t_filt, p_filt, band,t,p] = pickle.load(open(path.join(data_folder, path.basename(filename)),'rb'))
  
  plot_column = [
      [
          sg.Button(enable_events=True, key=&quot;Plot&quot;,button_text=&quot;Plot&quot;)],
      [sg.T('Controls:')],
      [sg.Canvas(key='controls_cv')],
      [sg.T('Figure:')],
      [sg.Column(
          layout=[
              [sg.Canvas(key='canvas',
                         # it's important that you set this size
                         size=(400 * 2, 600)
                         )]
          ],
          background_color='#DAE0E6',
          pad=(0, 0)
      )],]
  layout_Main_window = [
      [
          sg.Column(plot_column),
      ]
  ]
  
  window = sg.Window(&quot;Click detection&quot;, layout_Main_window, finalize=True, location=(30, 80))
          
  while True:
      event, values = window.read()
      if event == &quot;Exit&quot; or event == sg.WIN_CLOSED:
          break
          
          # --------- Data folder ---------
      elif event == &quot;Plot&quot;:
          fig = plt.figure(figsize=(11, 10))
          plt.subplot(2,1,1)
          plt.title('Original signals')
          plt.plot(t0, p0,'.', label='Original signal', zorder = 0)
          plt.plot(t_filt, p_filt, label='filtered ['+str(band[0])+','+str(band[1])+']', zorder = 5)
          plt.legend(loc='best')
          plt.ylabel('Intensity')
          x_axis1 = [round(min(min(t0),min(t_filt)),1), round(max(max(t0),max(t_filt)),1)]
          plt.gca().set_xlim(x_axis1)
          plt.grid()
          
          plt.subplot(2,1,2)
          plt.title('Pen + equipment signal')
          plt.plot(t, p, color='#ff7f0e', label='clicking period')
          plt.legend(loc='best')
          plt.ylabel('relative intensity')
          plt.gca().set_xlim(x_axis1)
          plt.xticks(arange(x_axis1[0], x_axis1[1], 0.5))
          plt.xlabel('time (s)')
          plt.grid()
          plot_name = path.join(data_folder, path.basename(filename.replace('.p', '.png')))
          plt.savefig(data_folder)
          
          draw_figure_w_toolbar(window['canvas'].TKCanvas, fig, window['controls_cv'].TKCanvas)
  </code></pre>