Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

ttk::radiobutton

NAME
SYNOPSIS
DESCRIPTION
STANDARD OPTIONS
WIDGET-SPECIFIC OPTIONS
WIDGET COMMAND
WIDGET STATES
STANDARD STYLES
SEE ALSO
KEYWORDS

___________________________

NAME

ttk::radiobutton − Mutually exclusive option widget

SYNOPSIS

ttk::radiobutton pathName ?options? ___________________________

DESCRIPTION

ttk::radiobutton widgets are used in groups to show or change a set of mutually-exclusive options. Radiobuttons are linked to a Tcl variable, and have an associated value; when a radiobutton is clicked, it sets the variable to its associated value.

STANDARD OPTIONS

−class	−compound	−cursor
−image	−state	−style
−takefocus	−text	−textvariable
−underline	−width

See the ttk_widget manual entry for details on the standard options.

WIDGET-SPECIFIC OPTIONS

Command-Line Name:−command

	Database Name:	command
	Database Class:	Command

A Tcl script to evaluate whenever the widget is invoked.

Command-Line Name:−value

	Database Name:	Value
	Database Class:	Value

The value to store in the associated −variable when the widget is selected.

Command-Line Name:−variable

	Database Name:	variable
	Database Class:	Variable

The name of a global variable whose value is linked to the widget. Default value is ::selectedButton.

WIDGET COMMAND

In addition to the standard cget, configure, identify, instate, and state commands, radiobuttons support the following additional widget commands:
pathname invoke

Sets the −variable to the −value, selects the widget, and evaluates the associated −command. Returns the result of the −command, or the empty string if no −command is specified.

WIDGET STATES

The widget does not respond to user input if the disabled state is set. The widget sets the selected state whenever the linked −variable is set to the widget’s −value, and clears it otherwise. The widget sets the alternate state whenever the linked −variable is unset. (The alternate state may be used to indicate a “tri-state” or “indeterminate” selection.)

STANDARD STYLES

Ttk::radiobutton widgets support the Toolbutton style in all standard themes, which is useful for creating widgets for toolbars.

KEYWORDS

widget, button, option

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.