08-13-2012
You cannot nest quotes inside quotes, and still expect them to work. Quotes do not work that way. Any methods you can kludge them into working with are, by definition, severe security holes, because if the shell is re-evaluating quotes, it will also re-evaluate backticks and the like. Someone could feed `rm -Rf ~/` into your program and it would do it.
Usually, if you're trying to do that, there's better ways to solve the problem which have been overlooked. But to know how to solve your problem, first we need to know what it is, and we don't.
We know how you're trying to solve it -- put a whole command in a variable -- but have no idea why you're trying to put a whole command in a variable. Usually, there's zero need to do so.
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LEARN ABOUT DEBIAN
ttk::scale
ttk::scale(3tk) Tk Themed Widget ttk::scale(3tk)
__________________________________________________________________________________________________________________________________________________
NAME
ttk::scale - Create and manipulate a scale widget
SYNOPSIS
ttk::scale pathName ?options...?
_________________________________________________________________
DESCRIPTION
A ttk::scale widget is typically used to control the numeric value of a linked variable that varies uniformly over some range. A scale dis-
plays a slider that can be moved along over a trough, with the relative position of the slider over the trough indicating the value of the
variable.
STANDARD OPTIONS
-class -cursor -style
-takefocus
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
Specifies the prefix of a Tcl command to invoke whenever the scale's value is changed via a widget command. The actual command con-
sists of this option followed by a space and a real number indicating the new value of the scale.
Command-Line Name:-from
Database Name: from
Database Class: From
A real value corresponding to the left or top end of the scale.
Command-Line Name:-length
Database Name: length
Database Class: Length
Specifies the desired long dimension of the scale in screen units (i.e. any of the forms acceptable to Tk_GetPixels). For vertical
scales this is the scale's height; for horizontal scales it is the scale's width.
Command-Line Name:-orient
Database Name: orient
Database Class: Orient
Specifies which orientation whether the widget should be laid out horizontally or vertically. Must be either horizontal or vertical
or an abbreviation of one of these.
Command-Line Name:-to
Database Name: to
Database Class: To
Specifies a real value corresponding to the right or bottom end of the scale. This value may be either less than or greater than
the from option.
Command-Line Name:-value
Database Name: value
Database Class: Value
Specifies the current floating-point value of the variable.
Command-Line Name:-variable
Database Name: variable
Database Class: Variable
Specifies the name of a global variable to link to the scale. Whenever the value of the variable changes, the scale will update to
reflect this value. Whenever the scale is manipulated interactively, the variable will be modified to reflect the scale's new
value.
WIDGET COMMAND
pathName cget option
Returns the current value of the specified option; see ttk::widget(3tk).
pathName configure ?option? ?value option value ...?
Modify or query widget options; see ttk::widget(3tk).
pathName get ?x y?
Get the current value of the -value option, or the value corresponding to the coordinates x,y if they are specified. X and y are
pixel coordinates relative to the scale widget origin.
pathName identify x y
Returns the name of the element at position x, y. See ttk::widget(3tk).
pathName instate statespec ?script?
Test the widget state; see ttk::widget(3tk).
pathName set value
Set the value of the widget (i.e. the -value option) to value. The value will be clipped to the range given by the -from and -to
options. Note that setting the linked variable (i.e. the variable named in the -variable option) does not cause such clipping.
pathName state ?stateSpec?
Modify or query the widget state; see ttk::widget(3tk).
INTERNAL COMMANDS
pathName coords ?value?
Get the coordinates corresponding to value, or the coordinates corresponding to the current value of the -value option if value is
omitted.
SEE ALSO
ttk::widget(3tk), scale(3tk)
KEYWORDS
scale, slider, trough, widget
Tk 8.5 ttk::scale(3tk)