Scale used to control the size of a circle. : Scale « Tkinker « Python Tutorial

1. Python Tutorial
2. Tkinker
3. Scale

from Tkinter import *

class ScaleDemo( Frame ):
   def __init__( self ):
      Frame.__init__( self )
      self.pack( expand = YES, fill = BOTH )
      self.master.title( "Scale Demo" )
      self.master.geometry( "220x270" )

      self.control = Scale( self, from_ = 0, to = 200,orient = HORIZONTAL, command = self.updateCircle )
      self.control.pack( side = BOTTOM, fill = X )
      self.control.set( 10 )

      self.display = Canvas( self, bg = "white" )
      self.display.pack( expand = YES, fill = BOTH )

   def updateCircle( self, scaleValue ):
      end = int( scaleValue ) + 10
      self.display.delete( "circle" )
      self.display.create_oval( 10, 10, end, end,fill = "red", tags = "circle" )

ScaleDemo().mainloop()

18.27.Scale
	18.27.1.	Scale with variable
	18.27.2.	Get scale value
	18.27.3.	Label, Button, and Scale Demo
	18.27.4.	Scale used to control the size of a circle.
	18.27.5.	Scale Widgets
	18.27.6.	Show current value of Scale
	18.27.7.	Scale properties setting in constructor