Python Devlopment



  Dictionaries   for loop   Functions   if...else   input() function   Introduction   Lists   Multiple return types   Operators   Range() Function   Sample Menu driven Program   Sets   Strings   Tuple   Variables   While Loop
  Built-in Functions   Recursive Function   User-Defined Function
  Basics of Strings   Escape Characters   String Operations   String Slicing
  Built-in Methods   Built-in Operators   Comprehensions   List Slicing   Lists   Creating Index
  Basic Tuple Operations   Built-in Tuple Functions   Tuple Introduction
  Built-in Dictionary Methods   Introduction to Dictionaries   Operations in Dictionary   Properties of Dictonary
  Overview of OOP's
  Directories   Exceptions   Text Files
  Button   checkbutton   Entry   Introduction   Label   Listbox   Radiobutton
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Button

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There are a number of widgets which you can put in your tkinter application. Some of the major widgets are explained below:

  • Button
  • Canvas
  • Checkbutton
  • Entry
  • Frame
  • Label
  • Listbox
  • Menubutton
  • Menu
  • Message
  • Radiobutton etc

Button:

To add a button in your application, this widget is used.
The general syntax is:

mybutton=Button(win, option=value)

win is the parameter used to represent the parent window.
There are number of options which are used to change the format of the Buttons. Number of options can be passed as parameters separated by commas. Some of them are listed below.

  • activebackground: to set the background color when button is under the cursor.
  • activeforeground: to set the foreground color when button is under the cursor.
  • bg: to set he normal background color.
  • command: to call a function.
  • font: to set the font on the button label.
  • image: to set the image on the button.
  • width: to set the width of the button.
  • height: to set the height of the button
Example:
from Tkinter import*
win=Tk()
win.title('My First GUI')
mybutton=Button(win,text="Click me")
mybutton.pack()
win.mainloop()