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FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
spinbox
 
spinbox(n)		     Tk Built-In Commands		    spinbox(n)



NAME
       spinbox - Create and manipulate spinbox widgets

SYNOPSIS
       spinbox	  pathName   ?options?	  -activebackground   -highlightthick-
       ness -repeatinterval    -background    -insertbackground   -selectback-
       ground	 -borderwidth	-insertborderwidth  -selectborderwidth	 -cur-
       sor   -insertontime  -selectforeground	   -exportselection    -inser-
       twidth	-takefocus    -font	-insertofftime -textvariable	-fore-
       ground	 -justify  -xscrollcommand    -highlightbackground     -relief
       -highlightcolor	   -repeatdelay

WIDGET-SPECIFIC OPTIONS
       The background color to be used for the spin buttons.  The cursor to be
       used when over the spin buttons.  If this is  empty  (the  default),  a
       default	cursor will be used.  The relief to be used for the upper spin
       button.	The relief to be used for the lower spin button.  Specifies  a
       Tcl  command  to  invoke whenever a spinbutton is invoked.  The command
       recognizes several percent substitutions: %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).  Specifies the  background	color  to  use
       when  the spinbox is disabled.  If this option is the empty string, the
       normal background color is used.  Specifies the foreground color to use
       when  the spinbox is disabled.  If this option is the empty string, the
       normal foreground color is used.  Specifies an alternate format to  use
       when setting the string 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.  A 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.  Spec-
       ifies 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 infor-
       mation.	 A  floating-point  value specifying the increment.  When used
       with -from and -to, the value in the widget will be adjusted by -incre-
       ment  when  a spin button is pressed (up adds the value, down subtracts
       the value).  Specifies the background color to use when the spinbox  is
       readonly.   If  this  option is the empty string, the normal background
       color is used.  Specifies 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
       the widget may still be selected.  If  the  spinbox  is	disabled,  the
       value  may  not	be changed, no insertion cursor will be displayed, the
       contents will not be selectable, and the spinbox may be displayed in  a
       different color, depending on the values of the -disabledforeground and
       -disabledbackground options.  A 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.
       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 explicitly state which mode you wish to use.  See
       Validation below for more.  Specifies a script  to  evaluate  when  you
       want  to  validate  the	input  in  the widget.	Setting it to an empty
       string disables this feature (the default).  Validation occurs  accord-
       ing  to	the  value of -validate.  This command 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.  Must be a proper
       list value.  If specified, the spinbox will use these values as to con-
       trol  its  contents,  starting  with  the first value.  This option has
       precedence over the -from and -to range.  Specifies  an	integer  value
       indicating  the	desired  width	of 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.  Must 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 pathName argu-
       ment)  and  makes  it  into  a  spinbox	widget.   Additional  options,
       described  above, may be specified on the command line or in the option
       database to configure aspects of the spinbox such as its colors,  font,
       and relief.  The spinbox command returns its pathName argument.	At the
       time this command is invoked, there must not exist a window named path-
       Name, 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  descending  values  such  as
       times  or  dates in addition to editing the value 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  the
       standard  protocols for handling the selection;	spinbox selections are
       available as type STRING.  Spinboxes also observe the standard Tk rules
       for  dealing  with the input focus.  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 this case, only a  portion  of
       the  string  will be displayed; commands described below may be used to
       change the view in the window.  Spinboxes use the standard  xScrollCom-
       mand  mechanism for interacting with scrollbars (see the description of
       the xScrollCommand option for details).	They also support scanning, 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 conditions.

       It  is possible to perform percent substitutions on the validateCommand
       and invalidCommand, just as you would in a bind 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 config-
	    uring the spinbox widget to have a new textvariable, this will  be
	    the value of that textvariable.

       %s   The current value of spinbox before edition.

       %S   The  text  string being inserted/deleted, if any.  Otherwise 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 that using the validateCommand
       will not interfere with the traditional behavior of the spinbox widget.
       Using the textVariable for read-only purposes will  never  cause  prob-
       lems.   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 be triggered).  The same hap-
       pens when an error occurs evaluating the validateCommand.

       Primarily, an error will occur when the validateCommand or  invalidCom-
       mand encounters an error in its script while evaluating or validateCom-
       mand does not return a valid Tcl boolean value.	 The  validate	option
       will  also  set	itself	to  none 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 you were editing the spinbox widget from).  It  is  also
       recommended to not set an associated textVariable during validation, as
       that can cause the spinbox widget  to  become  out  of  sync  with  the
       textVariable.


WIDGET COMMAND
       The  spinbox  command creates a new Tcl command whose name is pathName.
       This command may be used to invoke various operations  on  the  widget.
       It  has	the  following	general  form:	pathName  option ?arg arg ...?
       Option and the args determine the exact behavior of the command.

       Many of the widget commands for spinboxes take one or more  indices  as
       arguments.   An index specifies a particular character in the spinbox's
       string, in any of the following ways:

       number	   Specifies the character as a numerical index, where 0  cor-
		   responds 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  one  in  the
		   spinbox's  string.	This  is  equivalent  to  specifying a
		   numerical index  equal  to  the  length  of	the  spinbox's
		   string.

       insert	   Indicates the character adjacent to and immediately follow-
		   ing the insertion cursor.

       sel.first   Indicates the first character in the selection.  It	is  an
		   error  to use this form if the selection isn't in the spin-
		   box window.

       sel.last    Indicates the character just after  the  last  one  in  the
		   selection.	It  is an error to use this form if the selec-
		   tion isn't in the spinbox window.

       @number	   In this form, number is treated as an x-coordinate  in  the
		   spinbox's window;  the character spanning that x-coordinate
		   is used.  For example, ``@0'' indicates the left-most char-
		   acter 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  elements  of  the
	      list  give  the  x and y coordinates of the 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 values accepted by the spin-
	      box 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 avail-
	      able  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 named
	      option (this list will be identical to the corresponding sublist
	      of  the  value  returned	if no option is specified).  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  any
	      of 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 to first+1, i.e.  a  single  character  is
	      deleted.	This command returns an empty string.

       pathName get
	      Returns 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 to  coordi-
	      nates  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
	      Insert the characters of string just before the character  indi-
	      cated by index.  Returns an empty string.

       pathName invoke element
	      Causes  the specified element, either buttondown or buttonup, to
	      be invoked, triggering the action associated with it.

       pathName scan option args
	      This command is used to implement scanning on spinboxes.	It has
	      two forms, depending on option:

	      pathName scan mark x
		     Records  x  and  the  current view in the spinbox window;
		     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  argu-
		     ment and the x argument to the last scan mark command for
		     the widget.  It then adjusts the view left or right by 10
		     times  the  difference in x-coordinates.  This command is
		     typically associated with mouse motion events in the wid-
		     get,  to  produce	the  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 a spinbox.
	      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't
		     currently 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.

	      pathName selection element ?element?
		     Sets or gets the currently selected element.  If a  spin-
		     button   element  is  specified,  it  will  be  displayed
		     depressed.

	      pathName selection from index
		     Set the selection anchor point to just before the charac-
		     ter  given  by  index.   Doesn't  change  the  selection.
		     Returns an empty string.

	      pathName selection present
		     Returns 1 if there is  are  characters  selected  in  the
		     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 vali-
	      dation is on, it will occur when setting the string.

       pathName validate
	      This  command is used to force an evaluation of the validateCom-
	      mand 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 fol-
	      lowing forms:

	      pathName xview
		     Returns a list containing two elements.  Each element  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 element is .2 and the second ele-
		     ment is .6, 20% of the spinbox's text  is	off-screen  to
		     the  left,  the  middle 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 -xscrollcom-
		     mand option.

	      pathName xview index
		     Adjusts the view in the  window  so  that	the  character
		     given  by index is displayed at the left edge of the win-
		     dow.

	      pathName xview moveto fraction
		     Adjusts the view in the  window  so  that	the  character
		     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 number average-width characters on the display;
		     if it is pages then the view adjusts  by  number  screen-
		     fuls.   If  number is negative then characters farther to
		     the left become visible;  if it is positive then  charac-
		     ters farther to the right become visible.


DEFAULT BINDINGS
       Tk  automatically  creates  class bindings for spinboxes that give them
       the following default behavior.	In the	descriptions  below,  ``word''
       refers  to  a contiguous group of letters, digits, or ``_'' characters,
       or any single character 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 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 but-
	      ton 1 was pressed.  If the button is double-clicked before drag-
	      ging  then  the  selection  will	be  adjusted in units of whole
	      words.

       [5]    Clicking mouse button 1 with the Control key down will  position
	      the insertion cursor in the spinbox without affecting the selec-
	      tion.

       [6]    If any normal printing characters are typed in a	spinbox,  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 into the 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 (if there  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  any  selection  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  is  extended  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  selection.	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 insertion cursor to the beginning
	      of the spinbox and also extends the selection to that point.

       [11]   The End key, or Control-e, will move the insertion cursor 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.  They don'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)  or	Meta-w
	      copies the selection in the widget to the clipboard, if there is
	      a selection.

       [16]   The F20 key (labelled Cut on many Sun workstations) or Control-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 Con-
	      trol-y inserts the contents of the clipboard at the position  of
	      the insertion cursor.

       [18]   The  Delete  key	deletes  the selection, if there is one in 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 selection, 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	inser-
	      tion cursor.

       [23]   Control-t  reverses the order of the two characters to the right
	      of the insertion cursor.

       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 modifi-
       cations will take place.

       The  behavior  of spinboxes can be changed by defining new bindings for
       individual widgets or by redefining the class bindings.


KEYWORDS
       spinbox, entry, widget



Tk				      8.4			    spinbox(n)
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