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Python provides various options for developing graphical user interfaces (GUIs). Most important are listed below. • Tkinter − Tkinter is the Python interface to the Tk GUI toolkit shipped with Python. We would look this option in this chapter.
Python and Tkinter Programming. By itself, it is an effective educating device for college kids of Python who already know Tk in one among its different manifestations. Appendices masking construct/set up points Python megawidgets and a Tkinter reference guide comprise almost forty% of the book, leaving a quick 15% for the introductory tutorial. Tkinter8.5reference:aGUIfor Python John W. Shipman 2013-12-31 17:59 Abstract Describes the Tkinterwidget set for constructing graphical user interfaces (GUIs) in the Python programming language. Includes coverage of the ttk themed widgets. This publication is available in Web form 1 and also as a PDF document 2. Please forward any comments to.
• wxPython − This is an open-source Python interface for wxWindows. • JPython − JPython is a Python port for Java which gives Python scripts seamless access to Java class libraries on the local machine. There are many other interfaces available, which you can find them on the net. Tkinter Programming Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit. Creating a GUI application using Tkinter is an easy task.
All you need to do is perform the following steps − • Import the Tkinter module. • Create the GUI application main window.
• Add one or more of the above-mentioned widgets to the GUI application. • Enter the main event loop to take action against each event triggered by the user. Example #!/usr/bin/python import tkinter top = tkinter.Tk() # Code to add widgets will go here. Top.mainloop() This would create a following window − Tkinter Widgets Tkinter provides various controls, such as buttons, labels and text boxes used in a GUI application.
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These controls are commonly called widgets. There are currently 15 types of widgets in Tkinter.
We present these widgets as well as a brief description in the following table − Sr.No. Operator & Description 1 The Button widget is used to display buttons in your application. 2 The Canvas widget is used to draw shapes, such as lines, ovals, polygons and rectangles, in your application. 3 The Checkbutton widget is used to display a number of options as checkboxes.
The user can select multiple options at a time. Mss sp 58 type 20. 4 The Entry widget is used to display a single-line text field for accepting values from a user. 5 The Frame widget is used as a container widget to organize other widgets. 6 The Label widget is used to provide a single-line caption for other widgets.
It can also contain images. 7 The Listbox widget is used to provide a list of options to a user. 8 The Menubutton widget is used to display menus in your application. 9 The Menu widget is used to provide various commands to a user.
These commands are contained inside Menubutton. 10 The Message widget is used to display multiline text fields for accepting values from a user. 11 The Radiobutton widget is used to display a number of options as radio buttons. The user can select only one option at a time. 12 The Scale widget is used to provide a slider widget. 13 The Scrollbar widget is used to add scrolling capability to various widgets, such as list boxes. 14 The Text widget is used to display text in multiple lines.
15 The Toplevel widget is used to provide a separate window container. 16 The Spinbox widget is a variant of the standard Tkinter Entry widget, which can be used to select from a fixed number of values. 17 A PanedWindow is a container widget that may contain any number of panes, arranged horizontally or vertically. 18 A labelframe is a simple container widget.
Its primary purpose is to act as a spacer or container for complex window layouts. 19 This module is used to display message boxes in your applications. Let us study these widgets in detail − Standard attributes Let us take a look at how some of their common attributes.such as sizes, colors and fonts are specified. • • • • • • • Let us study them briefly − Geometry Management All Tkinter widgets have access to specific geometry management methods, which have the purpose of organizing widgets throughout the parent widget area. Tkinter exposes the following geometry manager classes: pack, grid, and place.
• − This geometry manager organizes widgets in blocks before placing them in the parent widget. • − This geometry manager organizes widgets in a table-like structure in the parent widget. • − This geometry manager organizes widgets by placing them in a specific position in the parent widget. Let us study the geometry management methods briefly −.
This web page is for information that extends or supports theARRL Antenna Book, 23rd edition. The section for each edition contains links to supplemental files and software, non-ARRL documents, and errata and corrections. For more information on installing the software provided on the book's CD-ROM, download and read this CD-ROM Installation Summary, provided as a PDF document.
See the Software folder for HFTA angle-of-arrival files if your installation did not produce a complete, world-wide set of files.
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Information in support of previous editions can be found on the ARRL Antenna Book - 22nd Edition orARRL Product Notespage for editions before the 22nd.