Tk - Button Widget

Tk button widget is a clickable widget that triggers an action. The syntax for button widget is shown below −

button buttonName options

Options

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

Sr.No.	Syntax & Description
1	-font fontDescriptor Used to set font for widget.
2	-height number Used to set height for widget.
3	-command action Sets the command action for button.
4	-text text Sets the text for the widget.
5	-width number Sets the width for widget.

A simple button widget is shown below −

#!/usr/bin/wish

grid [label .myLabel  -text "Click the buttons" -textvariable labelText]
grid [button .myButton1  -text "Button 1" -font {Helvetica -18 bold} -height 5 -width 10
   -command "set labelText clicked_top_btn"]
grid [button .myButton2 -text "Button 2" -font {Helvetica -18 bold} -height 5 -width 10
   -command "set labelText clicked_bottom_btn"]

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

When we click the Button1, we will get the following output −

When we click the Button2, we will get the following output −

tk_basic_widgets.htm

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