Tk - Scale Widget

Scale widget is used to choose a numeric value through sliders. The syntax for scale widget is shown below −

scale scaleName options

Options

The options available for the scale widget are listed below in the following table −

Sr.No.	Syntax & Description
1	-background color Used to set background color for widget.
2	-borderwidth width Used to draw with border in 3D effects.
3	-font fontDescriptor Used to set font for widget.
4	-foreground color Used to set foreground color for widget.
5	-from number Range start value for widget.
6	-variable varName Variable associated with the widget. When the text of widget changes, the variable is set to text of widget.
7	-length number Sets the length for widget.
8	-orien orientation Sets the orientation for widget. It can be either horizontal or vertical.
9	-relief condition Sets the 3D relief for this widget. The condition may be raised, sunken, flat, ridge, solid, or groove.
10	-to number Range end value for widget.
11	-command command Procedure to be executed on action.

A simple example for scale widget is shown below −

#!/usr/bin/wish

proc scaleMe {mywidget scaleValue} {
   $mywidget configure -length $scaleValue
} 
pack [scale .s2  -from 100.0 -to 200.0 -length 100 -background yellow -borderwidth 5
   -font {Helvetica -18 bold} -foreground red -width 40 -relief ridge -orien horizontal
   -variable a -command "scaleMe .s2" ]

When we run the above program, we will get the following output.

When we scroll the scale to maximum, we will get the following output.

tk_mega_widgets.htm