- Copyright
- List of Examples
- List of Tables
- Preface
- Tcl Basics
- Tcl Fundamentals
- Getting Started
- The Guestbook CGI Application
- String Processing in Tcl
- Tcl Lists
- Control Structure Commands
- Procedures and Scope
- Tcl Arrays
- Working with Files and Programs
- Running Programs with exec
- The file Command
- Cross-Platform File Naming
- Manipulating Files and Directories
- File Attributes
- Input/Output Command Summary
- Opening Files for I/O
- Reading and Writing
- The Current Directory — cd and pwd
- Matching File Names with glob
- The exit and pid Commands
- Environment Variables
- The registry Command
- Advanced Tcl
- Tk Basics
- Tk Widgets
- Tk Details
- C Programming
- Changes
- Tcl 7.4/Tk 4.0
- wish
- Obsolete Features
- The cget Operation
- Input Focus Highlight
- Bindings
- Scrollbar Interface
- pack info
- Focus
- The send Command
- Internal Button Padding
- Radiobutton Value
- Entry Widget
- Menus
- Listboxes
- No geometry Attribute
- Text Widget
- Color Attributes
- Color Allocation and tk colormodel
- Canvas scrollincrement
- The Selection
- The bell Command
- Tcl 7.5/Tk 4.1
- Tcl 7.6/Tk 4.2
- Tcl/Tk 8.0
- The Tcl Compiler
- Namespaces
- Safe-Tcl
- New lsort
- tcl_precision Variable
- Year 2000 Convention
- Http Package
- Serial Line I/O
- Platform-Independent Fonts
- The tk scaling Command
- Application Embedding
- Native Menus and Menubars
- CDE Border Width
- Native Buttons and Scrollbars
- Images in Text Widgets
- No Errors from destroy
- grid rowconfigure
- The Patch Releases
- Tcl/Tk 8.1
- Tcl/Tk 8.2
- Tcl/Tk 8.3
- About The CD-ROM
- Tcl 7.4/Tk 4.0
- Index
Button Operations
Table 27-2 summarizes the operations on button widgets. In the table, $w is a button, checkbutton, radiobutton, or menubutton, except when noted. For the most part, these operations are used by the script libraries that implement the bindings for buttons. The cget and configure operations are the most commonly used by applications.
| $w cget option | Returns the value of the specified attribute. |
| $w configure ?option? ?value? ... | Queries or manipulates the configuration information for the widget. |
| $w deselect | Deselects the radiobutton or checkbutton. Set the radiobutton variable to the null string. Set the checkbutton variable to the off value. |
| $w flash | Redisplays the button several times in alternate colors. |
| $w invoke | Invokes the command associated with the button. |
| $w select | Selects the radiobutton or checkbutton, setting the associated variable appropriately. |
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