hwtk::scrollbar

-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.

-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

A Tcl script prefix to evaluate to change the view in the widget associated with the scrollbar. Additional arguments are appended to the value of this option whenever the user requests a view change by manipulating the scrollbar. This option typically consists of a two-element list, containing the name of a scrollable widget followed by either xview (for horizontal scrollbars) or yview (for vertical scrollbars).

-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.

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 get

Returns the scrollbar settings in the form of a list whose elements are the arguments to the most recent set widget command.

pathName set first last

This command is normally invoked by the scrollbars associated widget from an -xscrollcommand or -yscrollcommand callback. Specifies the visible range to be displayed. first and last are real fractions between 0 and 1.

The following widget commands are used internally by the TScrollbar widget class bindings.

pathName delta deltaX deltaY

Returns a real number indicating the fractional change in the scrollbar setting that corresponds to a given change in thumb position. For example, if the scrollbar is horizontal, the result indicates how much the scrollbar setting must change to move the thumb deltaX pixels to the right (deltaY is ignored in this case). If the scrollbar is vertical, the result indicates how much the scrollbar setting must change to move the thumb deltaY pixels down. The arguments and the result may be zero or negative.

pathName fraction x y

Returns a real number between 0 and 1 indicating where the point given by x and y lies in the trough area of the scrollbar, where 0.0 corresponds to the top or left of the trough and 1.0 corresponds to the bottom or right. x and y are pixel coordinates relative to the scrollbar widget. If x and y refer to a point outside the trough, the closest point in the trough is used.

pathName identify 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 in any element of the scrollbar. x and y are pixel coordinates relative to the scrollbar widget.

hwtk::dialog .dlg -title "::hwtk::scrollbar"
set recess [.dlg recess]

set sv [hwtk::scrollbar $recess.sv -command "$recess.text yview"]
set sh [hwtk::scrollbar $recess.sh -command "$recess.text xview" -orient horizontal]
set text [text $recess.text -yscrollcommand "$sv set" -xscrollcommand "$sh set" -wrap none]

grid $sv -row 0 -col 1 -sticky ns
grid $sh -sticky ew
grid $text -row 0 -sticky news

grid columnfigure $recess 0 -weight 1
grid rowfigure $recess 0 -weight 1

.dlg post