Tk Built-In Commands spinbox(1T)
_________________________________________________________________
NAME
spinbox - Create and manipulate spinbox widgets
SYNOPSIS
spinbox pathName ?options?
STANDARD OPTIONS-activebackground -highlightthickness -repeatinterval
-background -insertbackground -selectbackground
-borderwidth -insertborderwidth -selectborderwidth
-cursor -insertontime -selectforeground
-exportselection -insertwidth -takefocus
-font -insertofftime -textvariable
-foreground -justify -xscrollcommand
-highlightbackground -relief
-highlightcolor -repeatdelay
See the options manual entry for details on the standard options.WIDGET-SPECIFIC OPTIONS
Command-Line Name:-buttonbackground
Database Name: buttonBackground Database Class: Background The background color to be used for the spin buttons.Command-Line Name:-buttoncursor
Database Name: buttonCursor Database Class: Cursor The cursor to be used when over the spin buttons. If this is empty (the default), a default cursor will be used.Command-Line Name:-buttondownrelief
Database Name: buttonDownRelief Database Class: Relief The relief to be used for the upper spin button.Command-Line Name:-buttonuprelief
Database Name: buttonUpRelief Database Class: Relief The relief to be used for the lower spin button.Command-Line Name:-command
Database Name: command Database Class: Command Tk Last change: 8.4 1Tk Built-In Commands spinbox(1T)
Specifies a Tcl command to invoke whenever a spinbutton is invoked. The command recognizes several percentsubstitutions: %W for the widget path, %s for the
current value of the widget, and %d for the direction
of the button pressed (up or down).Command-Line Name:-disabledbackground
Database Name: disabledBackground Database Class: DisabledBackgroundSpecifies the background color to use when the spinbox
is disabled. If this option is the empty string, the normal background color is used.Command-Line Name:-disabledforeground
Database Name: disabledForeground Database Class: DisabledForegroundSpecifies the foreground color to use when the spinbox
is disabled. If this option is the empty string, the normal foreground color is used.Command-Line Name:-format
Database Name: format Database Class: Format Specifies an alternate format to use when setting thestring value when using the -from and -to range. This
must be a format specifier of the form %
. f, as it will format a floating-point number.
Command-Line Name:-from
Database Name: from Database Class: FromA floating-point value corresponding to the lowest
value for a spinbox, to be used in conjunction with -to
and -increment. When all are specified correctly, the
spinbox will use these values to control its contents.
This value must be less than the -to option. If
-values is specified, it supercedes this option.
Command-Line Name:-invalidcommand or -invcmd
Database Name: invalidCommand Database Class: InvalidCommand Specifies a script to eval when validateCommand returns 0. Setting it to an empty string disables this feature (the default). The best use of this option is to set it to bell. See Validation below for more information. Tk Last change: 8.4 2Tk Built-In Commands spinbox(1T)
Command-Line Name:-increment
Database Name: increment Database Class: IncrementA floating-point value specifying the increment. When
used with -from and -to, the value in the widget will
be adjusted by -increment when a spin button is pressed
(up adds the value, down subtracts the value).Command-Line Name:-readonlybackground
Database Name: readonlyBackground Database Class: ReadonlyBackgroundSpecifies the background color to use when the spinbox
is readonly. If this option is the empty string, the normal background color is used.Command-Line Name:-state
Database Name: state Database Class: StateSpecifies one of three states for the spinbox: normal,
disabled, or readonly. If the spinbox is readonly,
then the value may not be changed using widget commands and no insertion cursor will be displayed, even if the input focus is in the widget; the contents of thewidget may still be selected. If the spinbox is dis-
abled, the value may not be changed, no insertion cur-
sor will be displayed, the contents will not be select-
able, and the spinbox may be displayed in a different
color, depending on the values of the -disabledfore-
ground and -disabledbackground options.
Command-Line Name:-to
Database Name: to Database Class: ToA floating-point value corresponding to the highest
value for the spinbox, to be used in conjunction with
-from and -increment. When all are specified
correctly, the spinbox will use these values to control
its contents. This value must be greater than the-from option. If -values is specified, it supercedes
this option.Command-Line Name:-validate
Database Name: validate Database Class: Validate Specifies the mode in which validation should operate: none, focus, focusin, focusout, key, or all. It defaults to none. When you want validation, you must Tk Last change: 8.4 3Tk Built-In Commands spinbox(1T)
explicitly state which mode you wish to use. See Vali-
dation below for more.Command-Line Name:-validatecommand or -vcmd
Database Name: validateCommand Database Class: ValidateCommandSpecifies a script to evaluate when you want to vali-
date the input in the widget. Setting it to an empty string disables this feature (the default). Validationoccurs according to the value of -validate. This com-
mand must return a valid Tcl boolean value. If it returns 0 (or the valid Tcl boolean equivalent) then the value of the widget will not change and the invalidCommand will be evaluated if it is set. If it returns 1, then value will be changed. See Validation below for more information.Command-Line Name:-values
Database Name: values Database Class: ValuesMust be a proper list value. If specified, the spinbox
will use these values as to control its contents,starting with the first value. This option has pre-
cedence over the -from and -to range.
Command-Line Name:-width
Database Name: width Database Class: Width Specifies an integer value indicating the desired widthof the spinbox window, in average-size characters of
the widget's font. If the value is less than or equal to zero, the widget picks a size just large enough to hold its current text.Command-Line Name:-wrap
Database Name: wrap Database Class: wrapMust be a proper boolean value. If on, the spinbox
will wrap around the values of data in the widget._________________________________________________________________
DESCRIPTION
The spinbox command creates a new window (given by the path-
Name argument) and makes it into a spinbox widget. Addi-
tional options, described above, may be specified on the command line or in the option database to configure aspectsof the spinbox such as its colors, font, and relief. The
Tk Last change: 8.4 4Tk Built-In Commands spinbox(1T)
spinbox command returns its pathName argument. At the time
this command is invoked, there must not exist a window named pathName, but pathName's parent must exist.A spinbox is an extended entry widget that allows he user to
move, or spin, through a fixed set of ascending or descend-
ing values such as times or dates in addition to editing thevalue as in an entry. When first created, a spinbox's
string is empty. A portion of the spinbox may be selected
as described below. If a spinbox is exporting its selection
(see the exportSelection option), then it will observe thestandard protocols for handling the selection; spinbox
selections are available as type STRING. Spinboxes also observe the standard Tk rules for dealing with the inputfocus. When a spinbox has the input focus it displays an
insertion cursor to indicate where new characters will be inserted. Spinboxes are capable of displaying strings that are too long to fit entirely within the widget's window. In thiscase, only a portion of the string will be displayed; com-
mands described below may be used to change the view in the window. Spinboxes use the standard xScrollCommand mechanism for interacting with scrollbars (see the description of thexScrollCommand option for details). They also support scan-
ning, as described below. VALIDATION Validation works by setting the validateCommand option to a script which will be evaluated according to the validate option as follows: none Default. This means no validation will occur.focus validateCommand will be called when the spinbox
receives or loses focus.focusin validateCommand will be called when the spinbox
receives focus.focusout validateCommand will be called when the spinbox
loses focus.key validateCommand will be called when the spinbox is
edited.all validateCommand will be called for all above con-
ditions.It is possible to perform percent substitutions on the vali-
dateCommand and invalidCommand, just as you would in a bind Tk Last change: 8.4 5Tk Built-In Commands spinbox(1T)
script. The following substitutions are recognized:%d Type of action: 1 for insert, 0 for delete, or -1 for
focus, forced or textvariable validation.%i Index of char string to be inserted/deleted, if any,
otherwise -1.
%P The value of the spinbox should edition occur. If you
are configuring the spinbox widget to have a new
textvariable, this will be the value of that textvari-
able.%s The current value of spinbox before edition.
%S The text string being inserted/deleted, if any. Other-
wise it is an empty string.%v The type of validation currently set.
%V The type of validation that triggered the callback
(key, focusin, focusout, forced).%W The name of the spinbox widget.
In general, the textVariable and validateCommand can be dangerous to mix. Any problems have been overcome so thatusing the validateCommand will not interfere with the tradi-
tional behavior of the spinbox widget. Using the textVari-
able for read-only purposes will never cause problems. The
danger comes when you try set the textVariable to something that the validateCommand would not accept, which causes validate to become none (the invalidCommand will not betriggered). The same happens when an error occurs evaluat-
ing the validateCommand. Primarily, an error will occur when the validateCommand or invalidCommand encounters an error in its script while evaluating or validateCommand does not return a valid Tcl boolean value. The validate option will also set itself tonone when you edit the spinbox widget from within either the
validateCommand or the invalidCommand. Such editions will override the one that was being validated. If you wish to edit the value of the widget during validation and still have the validate option set, you should include the command%W config -validate %v
in the validateCommand or invalidCommand (whichever one youwere editing the spinbox widget from). It is also recom-
mended to not set an associated textVariable during valida-
tion, as that can cause the spinbox widget to become out of
sync with the textVariable. Tk Last change: 8.4 6Tk Built-In Commands spinbox(1T)
WIDGET COMMANDThe spinbox command creates a new Tcl command whose name is
pathName. This command may be used to invoke various opera-
tions on the widget. It has the following general form: pathName option ?arg arg ...?Option and the args determine the exact behavior of the com-
mand.Many of the widget commands for spinboxes take one or more
indices as arguments. An index specifies a particular char-
acter in the spinbox's string, in any of the following ways:
number Specifies the character as a numerical index, where 0 corresponds to the first character in the string. anchor Indicates the anchor point for the selection, which is set with the select from and select adjust widget commands. end Indicates the character just after the last onein the spinbox's string. This is equivalent to
specifying a numerical index equal to the lengthof the spinbox's string.
insert Indicates the character adjacent to and immedi-
ately following the insertion cursor. sel.first Indicates the first character in the selection. It is an error to use this form if the selectionisn't in the spinbox window.
sel.last Indicates the character just after the last one in the selection. It is an error to use thisform if the selection isn't in the spinbox win-
dow.@number In this form, number is treated as an x-
coordinate in the spinbox's window; the charac-
ter spanning that x-coordinate is used. For
example, ``@0'' indicates the left-most charac-
ter in the window. Abbreviations may be used for any of the forms above, e.g.``e'' or ``sel.f''. In general, out-of-range indices are
automatically rounded to the nearest legal value.The following commands are possible for spinbox widgets:
pathName bbox index Returns a list of four numbers describing the bounding box of the character given by index. The first two Tk Last change: 8.4 7Tk Built-In Commands spinbox(1T)
elements of the list give the x and y coordinates ofthe upper-left corner of the screen area covered by the
character (in pixels relative to the widget) and the last two elements give the width and height of the character, in pixels. The bounding box may refer to a region outside the visible area of the window. pathName cget option Returns the current value of the configuration option given by option. Option may have any of the valuesaccepted by the spinbox command.
pathName configure ?option? ?value option value ...? Query or modify the configuration options of the widget. If no option is specified, returns a list describing all of the available options for pathName(see Tk_ConfigureInfo for information on the format of
this list). If option is specified with no value, then the command returns a list describing the one namedoption (this list will be identical to the correspond-
ing sublist of the value returned if no option isspecified). 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. Option may have anyof the values accepted by the spinbox command.
pathName delete first ?last?Delete one or more elements of the spinbox. First is
the index of the first character to delete, and last is the index of the character just after the last one to delete. If last isn't specified it defaults tofirst+1, i.e. a single character is deleted. This com-
mand returns an empty string. pathName getReturns the spinbox's string.
pathName icursor index Arrange for the insertion cursor to be displayed just before the character given by index. Returns an empty string. pathName identify x y Returns the name of the window element corresponding tocoordinates x and y in the spinbox. Return value is
one of: none, buttondown, buttonup, entry. pathName index index Returns the numerical index corresponding to index. pathName insert index string Tk Last change: 8.4 8Tk Built-In Commands spinbox(1T)
Insert the characters of string just before the charac-
ter indicated by index. Returns an empty string. pathName invoke elementCauses the specified element, either buttondown or but-
tonup, to be invoked, triggering the action associated with it. pathName scan option argsThis command is used to implement scanning on spin-
boxes. It has two forms, depending on option: pathName scan mark xRecords x and the current view in the spinbox win-
dow; used in conjunction with later scan dragto commands. Typically this command is associated with a mouse button press in the widget. It returns an empty string. pathName scan dragto x This command computes the difference between its x argument and the x argument to the last scan mark command for the widget. It then adjusts the viewleft or right by 10 times the difference in x-
coordinates. This command is typically associated with mouse motion events in the widget, to producethe effect of dragging the spinbox at high speed
through the window. The return value is an empty string. pathName selection option arg This command is used to adjust the selection within aspinbox. It has several forms, depending on option:
pathName selection adjust index Locate the end of the selection nearest to the character given by index, and adjust that end of the selection to be at index (i.e. including but not going beyond index). The other end of the selection is made the anchor point for future select to commands. If the selection isn'tcurrently in the spinbox, then a new selection is
created to include the characters between index and the most recent selection anchor point, inclusive. Returns an empty string. pathName selection clear Clear the selection if it is currently in this widget. If the selection isn't in this widget then the command has no effect. Returns an empty string. Tk Last change: 8.4 9Tk Built-In Commands spinbox(1T)
pathName selection element ?element? Sets or gets the currently selected element. If a spinbutton element is specified, it will be displayed depressed. pathName selection from index Set the selection anchor point to just before the character given by index. Doesn't change the selection. Returns an empty string. pathName selection present Returns 1 if there is are characters selected inthe spinbox, 0 if nothing is selected.
pathName selection range start end Sets the selection to include the characters starting with the one indexed by start and ending with the one just before end. If end refers to the same character as start or an earlier one,then the spinbox's selection is cleared.
pathName selection to index If index is before the anchor point, set the selection to the characters from index up to but not including the anchor point. If index is the same as the anchor point, do nothing. If index is after the anchor point, set the selection to the characters from the anchor point up to but not including index. The anchor point is determined by the most recent select from or select adjust command in this widget. If the selection isn't in this widget then a new selection is created using the most recent anchor point specified for the widget. Returns an empty string. pathName set ?string?If string is specified, the spinbox will try and set it
to this value, otherwise it just returns the spinbox's
string. If validation is on, it will occur when set-
ting the string. pathName validate This command is used to force an evaluation of the validateCommand independent of the conditions specified by the validate option. This is done by temporarily setting the validate option to all. It returns 0 or 1. pathName xview args This command is used to query and change the horizontal position of the text in the widget's window. It can take any of the following forms: Tk Last change: 8.4 10Tk Built-In Commands spinbox(1T)
pathName xviewReturns a list containing two elements. Each ele-
ment is a real fraction between 0 and 1; together they describe the horizontal span that is visible in the window. For example, if the first elementis .2 and the second element is .6, 20% of the
spinbox's text is off-screen to the left, the mid-
dle 40% is visible in the window, and 40% of the
text is off-screen to the right. These are the
same values passed to scrollbars via the-xscrollcommand option.
pathName xview indexAdjusts the view in the window so that the charac-
ter given by index is displayed at the left edge of the window. pathName xview moveto fractionAdjusts the view in the window so that the charac-
ter fraction of the way through the text appears at the left edge of the window. Fraction must be a fraction between 0 and 1. pathName xview scroll number what This command shifts the view in the window left or right according to number and what. Number must be an integer. What must be either units or pages or an abbreviation of one of these. If what is units, the view adjusts left or right by numberaverage-width characters on the display; if it is
pages then the view adjusts by number screenfuls. If number is negative then characters farther to the left become visible; if it is positive then characters farther to the right become visible. DEFAULT BINDINGSTk automatically creates class bindings for spinboxes that
give them the following default behavior. In the descrip-
tions below, ``word'' refers to a contiguous group ofletters, digits, or ``_'' characters, or any single charac-
ter other than these. [1] Clicking mouse button 1 positions the insertion cursor just before the character underneath the mouse cursor, sets the input focus to this widget, and clears any selection in the widget. Dragging with mouse button 1 strokes out a selection between the insertion cursor and the character under the mouse.[2] Double-clicking with mouse button 1 selects the word
under the mouse and positions the insertion cursor at Tk Last change: 8.4 11Tk Built-In Commands spinbox(1T)
the beginning of the word. Dragging after a double click will stroke out a selection consisting of whole words.[3] Triple-clicking with mouse button 1 selects all of the
text in the spinbox and positions the insertion cursor
before the first character. [4] The ends of the selection can be adjusted by dragging with mouse button 1 while the Shift key is down; this will adjust the end of the selection that was nearest to the mouse cursor when button 1 was pressed. If thebutton is double-clicked before dragging then the
selection will be adjusted in units of whole words. [5] Clicking mouse button 1 with the Control key down willposition the insertion cursor in the spinbox without
affecting the selection.[6] If any normal printing characters are typed in a spin-
box, they are inserted at the point of the insertion cursor.[7] The view in the spinbox can be adjusted by dragging
with mouse button 2. If mouse button 2 is clicked without moving the mouse, the selection is copied intothe spinbox at the position of the mouse cursor.
[8] If the mouse is dragged out of the spinbox on the left
or right sides while button 1 is pressed, the spinbox
will automatically scroll to make more text visible (ifthere is more text off-screen on the side where the
mouse left the window). [9] The Left and Right keys move the insertion cursor one character to the left or right; they also clear anyselection in the spinbox and set the selection anchor.
If Left or Right is typed with the Shift key down, then the insertion cursor moves and the selection isextended to include the new character. Control-Left
and Control-Right move the insertion cursor by words,
and Control-Shift-Left and Control-Shift-Right move the
insertion cursor by words and also extend the selec-
tion. Control-b and Control-f behave the same as Left
and Right, respectively. Meta-b and Meta-f behave the
same as Control-Left and Control-Right, respectively.
[10] The Home key, or Control-a, will move the insertion
cursor to the beginning of the spinbox and clear any
selection in the spinbox. Shift-Home moves the inser-
tion cursor to the beginning of the spinbox and also
extends the selection to that point. Tk Last change: 8.4 12Tk Built-In Commands spinbox(1T)
[11] The End key, or Control-e, will move the insertion cur-
sor to the end of the spinbox and clear any selection
in the spinbox. Shift-End moves the cursor to the end
and extends the selection to that point.[12] The Select key and Control-Space set the selection
anchor to the position of the insertion cursor. Theydon't affect the current selection. Shift-Select and
Control-Shift-Space adjust the selection to the current
position of the insertion cursor, selecting from the anchor to the insertion cursor if there was not any selection previously.[13] Control-/ selects all the text in the spinbox.
[14] Control-\ clears any selection in the spinbox.
[15] The F16 key (labelled Copy on many Sun workstations) orMeta-w copies the selection in the widget to the clip-
board, if there is a selection. [16] The F20 key (labelled Cut on many Sun workstations) orControl-w copies the selection in the widget to the
clipboard and deletes the selection. If there is no selection in the widget then these keys have no effect. [17] The F18 key (labelled Paste on many Sun workstations)or Control-y inserts the contents of the clipboard at
the position of the insertion cursor. [18] The Delete key deletes the selection, if there is onein the spinbox. If there is no selection, it deletes
the character to the right of the insertion cursor.[19] The BackSpace key and Control-h delete the selection,
if there is one in the spinbox. If there is no selec-
tion, it deletes the character to the left of the insertion cursor.[20] Control-d deletes the character to the right of the
insertion cursor.[21] Meta-d deletes the word to the right of the insertion
cursor.[22] Control-k deletes all the characters to the right of
the insertion cursor.[23] Control-t reverses the order of the two characters to
the right of the insertion cursor. Tk Last change: 8.4 13Tk Built-In Commands spinbox(1T)
If the spinbox is disabled using the -state option, then the
spinbox's view can still be adjusted and text in the spinbox
can still be selected, but no insertion cursor will be displayed and no text modifications will take place.The behavior of spinboxes can be changed by defining new
bindings for individual widgets or by redefining the class bindings. KEYWORDSspinbox, entry, widget
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:_______________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE|
|____________________|__________________|_
| Availability | runtime/tk-8 |
|____________________|__________________|_
| Interface Stability| Uncommitted ||____________________|_________________|
NOTES Source for Tk is available on http://opensolaris.org. Tk Last change: 8.4 14