NAME
- variable - interrogate a button variable
SYNOPSIS
- variable var ? value ?
DESCRIPTION
-
Variable
queries or sets the value of a Tk radiobutton, checkbutton or choicebutton variable.
An error diagnostic will be returned if
the variable is of the wrong type (if for instance
it is the name of a named channel).
If value is given, the value of the variable is set to that value, and any associated buttons will subsequently reflect this in their appearance. Omitting the value argument returns the current value of the variable.
The special variable lasterror holds the text of the last Tk error encountered. It resets when queried.
SEE ALSO
- checkbutton(9) choicebutton(9) radiobutton(9),
| VARIABLE(9) | Rev: Tue Jan 29 13:12:04 GMT 2008 |