Tuesday, April 4, 2017

Tk - Basic Widgets

Basic widgets are common widgets available in almost all Tk applications. The list of available basic widgets is given below −
S.No. Widgets & Description
1 Label Widget for displaying single line of text.
2 Button Widget that is clickable and triggers an action.
3 Entry Widget used to accept a single line of text as input.
4 Message Widget for displaying multiple lines of text.
5 Text Widget for displaying and optionally edit multiple lines of text.
6 Toplevel Widget used to create a frame that is a new top level window.
A simple Tk example is shown below using basic widgets −
#!/usr/bin/wish

grid [label .myLabel -text "Label Widget" -textvariable labelText] 
grid [text .myText -width 20 -height 5]
.myText insert 1.0 "Text\nWidget\n"
grid [entry .myEntry -text "Entry Widget"]
grid [message .myMessage -background red -foreground white -text "Message\nWidget"]
grid [button .myButton1  -text "Button" -command "set labelText clicked"]
When we run the above program, we will get the following output −
Basic Widgets Example

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