Tk - Scale Widget


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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.

Scale Widget

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

Scale Widget2
tk_mega_widgets.htm
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