title: Creating Frame inside a Canvas
body: <p>I am trying to make a frame scrollable, and the only way I found to do this is making a scrollable canvas and adding a frame to it. This would work fine, if it worked for me. </p>
  
  <p>I am able to create a scrollable canvas that works fine, but I can't seem to properly add a frame inside of it:</p>
  
  <pre><code>    self.title = Label(root, text="Brnr", font=("Helvetica", 50), anchor = W, pady = 40, padx = 50)
      self.title.pack (anchor = NW)
      #creates title widget for title
  
      self.frame = Frame(screen, bd =1)
      self.frame.pack(fill = BOTH)
      #Creates frame widget under which all other widgets will be kept
  
      self.canvas = Canvas(self.frame,  bd=1,scrollregion=(0,0, 1000, 1000), height = 600)
      #creates canvas so that screen can be scrollable
  
      self.scrollbar = Scrollbar(self.frame, command=self.canvas.yview)
      #creates scrollbar
  
      self.canvas.config(yscrollcommand=self.scrollbar.set)  
      #connects the scrollbar to the canvas
  
      self.scrollbar.pack(side=RIGHT, fill=Y)                     
      self.canvas.pack(expand=YES, fill=BOTH) 
      #packs the scrollbar and canvas so that they fill the remainder of the screen
  
  
      self.frameC = Frame(bg = "red")
      self.canvas.create_window(0,0, anchor = NW, window = self.frameC, width = 200, height = 200)
      #creates window on the scrollable area to add other widgets
  
      self.frameC.pack()
      self.groupRec = LabelFrame(self.frameC, text ="Recommendations:", font=("Helvetica", 20))
      self.groupRec.pack()
      self.signupButton = Button(self.groupRec, text="Sign Up", width=10)
      self.signupButton.pack(side=RIGHT)
      #creates button to submit login
  </code></pre>
  
  <p>This gives me a scrollable, but empty, canvas, with none of the labelframe/button appearing.</p>