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                        Table of Contents [hide]
         1 Create your first GUI application
         2 Create a label widget
    o          2.1 Set label font size
    o          2.2 Setting window size
         3 Adding a button widget
    o          3.1 Change button foreground and background
        colors
    o          3.2 Handle button click event
         4 Get input using Entry class (Tkinter textbox)
    o          4.1 Set focus to entry widget
    o          4.2 Disable entry widget
         5 Add a combobox widget
         6 Add a Checkbutton widget (Tkinter checkbox)
    o          6.1 Set check state of a Checkbutton
         7 Add radio buttons widgets
    o          7.1 Get radio button value (selected radio
        button)
         8 Add a ScrolledText widget (Tkinter textarea)
    o          8.1 Set scrolledtext content
    o          8.2 Delete/Clear scrolledtext content
         9 Create a MessageBox
    o          9.1 Show warning and error messages
    o          9.2 Show askquestion dialogs
         10 Add a SpinBox (numbers widget)
    o          10.1 Set default value for Spinbox
         11 Add a Progressbar widget
    o           11.1 Change Progressbar color
         12   Add a filedialog (file & directory chooser)
    o           12.1 Specify file types (filter file extensions)
         13   Add a Menu bar
         14   Add a Notebook widget (tab control)
    o           14.1 Add widgets to Notebooks
         15   Add spacing for widgets (padding)
    se the progressbar class like this:
1 from tkinter.ttk import Progressbar
2
3 bar = Progressbar(window, length=200)
    You can set the progress bar value like this:
    bar['value'] = 70
    You can set this value based on any process you want like downloading
    a file or completing a task.
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