hwtk::scale

-clientdata

Database name: clientData

Database class: ClientData

Acts as a data storage for a widgets. User can store any data and this will not have any effect on widget property.

-cursor

Database name: cursor

Database class: Cursor

Specifies the mouse cursor to be used for the widget. See Tk_GetCursor and cursors(n) in the Tk reference manual for the legal values. If set to the empty string (the default), the cursor is inherited from the parent widget.

-help

Database name: help

Database class: Text

Specifies the text or help message that displays when the cursor moves over the widget.

-helpcommand

Database name: helpcommand

Database class: Command

Dynamic help which calls an assigned -helpcommand when the user moves the mouse on the widget. The text which is returned by the -helpcommand will be in turn be displayed on the tooltip.

-takefocus

Database name: takeFocus

Database class: TakeFocus

Determines whether the window accepts the focus during keyboard traversal. Either 0, 1, a command prefix (to which the widget path is appended, and which should return 0 or 1), or the empty string. See options(n) in the Tk reference manual for the full description.

-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 consists of this option followed by a space and a real number indicating the new value of the scale.

-from

Database name: from

Database class: From

A real value corresponding to the left or top end of the scale.

-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.

-orient

Database name: orient

Database class: Orient

Specifies the orientation whether the widget should be laid out horizontally or vertically. Must be either horizontal or vertical or an abbreviation of one of these. Default is horizontal.

-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.

-value

Database name: value

Database class: Value

Specifies the current floating-point value of the variable.

-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.

pathName configure ?option? ?value option value …?

Query or modify the configuration options of the widget. If one or more option-value pairs are specified, then the command modifies the given widget option(s) to have the given value(s); in this case the command returns an empty string. If option is specified with no value, then the command returns a list describing the named option: the elements of the list are the option name, database name, database class, default value, and current value. If no option is specified, returns a list describing all of the available options for pathName.

pathName cget option

Returns the current value of the configuration option given by option.

pathName identify element x y

Returns the name of the element under the point given by x and y, or an empty string if the point does not lie within any element. x and y are pixel coordinates relative to the widget. Some widgets accept other identify subcommands.

pathName instate statespec ?script?

Test the widget’s state. If script is not specified, returns 1 if the widget state matches statespec and 0 otherwise. If script is specified, equivalent to

if{[pathNameinstatestateSpec]}script

pathName state ?stateSpec?

Modify or inquire widget state. If stateSpec is present, sets the widget state: for each flag in stateSpec, sets the corresponding flag or clears it if prefixed by an exclamation point. Returns a new state spec indicating which flags were changed:

setchanges[pathNamestatespec]
pathNamestate$changes

will restore pathName to the original state. If stateSpec is not specified, returns a list of the currently-enabled state flags.

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.

pathName get ?xy?

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 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.

proc ScaleValues {w idx} {
    set c {lindex "Red Orange Yellow green_noitalic Blue Violet" [tcl::mathfunc::int $idx]]  
    $w configure -foreground $c -text "Color:: $c"
} 

hwtk::dialog .dlg -title "::hwtk::scale"
set recess [.dlg recess]
label $recess.label
hwtk::scale $recess.scale -from 0 -to 5 -command [list ScaleValues $recess.label]
pack $recess.label $recess.scale

.dlg post