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RedHat 9 (Linux i386) - man page for tixcombobox (redhat section n)

tixComboBox(n)			      Tix Built-In Commands			   tixComboBox(n)

_________________________________________________________________________________________________

NAME
       tixComboBox - Create and manipulate tixComboBox widgets

SYNOPSIS
       tixComboBox pathName ?options?

SUPER-CLASS
       The  TixComboBox  class is derived from the TixLabelWidget class and inherits all the com-
       mands, options and subwidgets of its super-class.

STANDARD OPTIONS
       TixComboBox supports all the standard options of a frame widget.  See the options(n)  man-
       ual entry for details on the standard options.

WIDGET-SPECIFIC OPTIONS
       [-anchor anchor]  Specifies  how  the string inside the entry subwidget should be aligned.
       Only the values "w" or "e" are allowed. When set the "w", the  entry  is  aligned  to  its
       beginning.  When  set to "e", it is aligned to its end.	[-arrowbitmap arrowBitmap] Speci-
       fies the bitmap to be used in the arrow button beside the entry widget. The default is  an
       downward  arrow	bitmap	in  the file $tix_library/bitmaps/cbxarrow [-browsecmd browseCmd]
       Specifies the command to be called when the user browses through the listbox. This command
       can be used to provide instant feedback when the user examines items in the listbox before
       committing a choice.  [-command command] Specifies the command to be called when the  Com-
       boBox  is  invoked  or  when  the -value of the ComboBox is changed.  [-crossbitmap cross-
       Bitmap] Specifies the bitmap to be used in the "cross" button to the  left  of  the  entry
       widget.	The  default  is  a  bitmap in the file $tix_library/bitmaps/cross [-disablecall-
       back disableCallback] A boolean value indicating whether  callbacks  should  be	disabled.
       When  set  to  true, the TCL command specified by the -command option is not executed when
       the -value of the ComboBox.  changes.  [-disabledforeground disabledforeground]	Specifies
       the  foreground	color  to  be used when the ComboBox is disabled.  [-dropdown dropdown] A
       Boolean value specifying the style of the ComboBox. When set to	"true",  the  listbox  is
       only  displayed	temporarily  when  the	arrow button is pressed. When set to "false", the
       listbox is always displayed.  [-editable editable] Specifies whether the user  is  allowed
       to type into the entry subwidget of the ComboBox.  [-fancy fancy] A Boolean value specify-
       ing whether the cross and tick button subwidgets should be shown.  [-grab grab]	Specifies
       the  pointer grabbing policy when the listbox is popped up.  Only values "global", "local"
       or "none" are allowed. By default global grab is used. However, when  you  are  developing
       your  application, you may want to use only local grabbing so that in the event of errors,
       your X display won't be locked up.

       Name:	      historyLimit
       Class:	      historyLimit
       Switch:	      -historylimit
       Alias:	      -histlimit

	      Specifies how many previous user inputs can be stored in the history list.   [-his-
	      tory history]  A	Boolean  value	specifying whether previous user inputs should be
	      stored in the history list.  [-label label] Specifies the string to display as  the
	      label  of  this  ComboBox widget.  [-labelside labelSide] Specifies where the label
	      should be displayed relative to the entry subwidget. Valid options are: top,  left,
	      right, bottom, none or acrosstop.  [-listcmd listCmd] Specifies a TCL command to be
	      called every time when the listbox pops up. This option allows you to fill  up  the
	      listbox  on-demand.  This option is ignored when the listbox is not in the dropdown
	      style.  [-listwidth listWidth] If set, this option controls the width of the  list-
	      box  subwidget  when it is popped up. The option is ignored when the listbox is not
	      in the dropdown style.  [-prunehistory prunehistory] Specifies  whether  duplicated
	      previous	user inputs should be pruned from the the history list. Only Boolean val-
	      ues are allowed.	[-selection selection] Contains the  selection	in  the  ComboBox
	      (the  string  displayed  in the entry subwidget). Depending on the -selectmode, the
	      selection of a ComboBox may be different than its  -value.   [-selection selection]
	      This  option  stores  the temporary selection. When the user types in a text string
	      inside the entry widget, that string is considered as  a	temporary  input  and  is
	      stored  inside  the  -selection  option. The -value option is updated only when the
	      user presses the return key.  [-selectmode selectMode] Specifies the how	the  com-
	      bobox  responds  to the mouse button events in the listbox subwidget; can eithet be
	      "browse" or "immediate". The default -selectmode is "browse". See the BINDINGS sec-
	      tion  below.   [-state state]  Specifies the whether the ComboBox is normal or dis-
	      abled.  Only the values "normal" and "disabled" are recognized.  [-tickbitmap tick-
	      Bitmap]  Specifies  the  bitmap  to be used in the "tick" button to the left of the
	      entry widget. The default is a bitmap in the file $tix_library/bitmaps/tick [-vali-
	      datecmd validateCmd]  Specifies  a  TCL command to be called when the -value of the
	      ComboBox is about to change. This command is called with one parameter --  the  new
	      -value entered by the user. This command is to validate this new value by returning
	      a value it deems valid.  [-value value] Specifies the string to be displayed in the
	      entry subwidget of the ComboBox. When queried, the returned value is the last value
	      selected by the user. When the -value option is changed as a result of  the  config
	      -value  widget command, the TCL command specified by the -command option is called.
	      [-variable variable] Specifies the global variable in which the value of	the  Com-
	      boBox  should  be  stored.  The value of the ComboBox will be automatically updated
	      when this variable is changed.

SUBWIDGETS
       Name:	      arrow
       Class:	      Button

	      The down arrow button.

       Name:	      cross
       Class:	      Button

	      The cross button. Available only when -fancy is set.

       Name:	      entry
       Class:	      Entry

	      The entry that shows the value of this tixControl.

       Name:	      label
       Class:	      Label

	      The label subwidget.

       Name:	      listbox
       Class:	      Listbox

	      The listbox that holds all the list entries.

       Name:	      slistbox
       Class:	      TixScrolledListBox

	      The scrolled-listbox that provides the scrollbars.

       Name:	      tick
       Class:	      Button

	      The tick button. Available only when -fancy is set.
_________________________________________________________________

DESCRIPTION
       The tixComboBox command creates a new window (given by the pathName argument) and makes it
       into  a	tixComboBox widget.  Additional options, described above, may be specified on the
       command line or in the option database to configure aspects of the ComboBox  such  as  its
       cursor and relief.

       The  Tix  ComboBox  widget is similar to the combo box control in MS Windows. The user can
       select a choice by either typing in the entry subwdget or selecting from the listbox  sub-
       widget.

WIDGET COMMANDS
       The  tixComboBox command creates a new Tcl command whose name is the same as the path name
       of the ComboBox's window.  This command may be used to invoke various  operations  on  the
       widget. It has the following general form:
		     pathName option ?arg arg ...?
       PathName is the name of the command, which is the same as the ComboBox widget's path name.
       Option and the args determine the exact behavior of the command.  The  following  commands
       are possible for ComboBox widgets:

       pathName addhistory string
	      Add the string to the beinning of the listbox.

       pathName appendhistory string
	      Append the string to the end of the listbox.

       pathName cget option
	      Returns  the current value of the configuration option given by option.  Option may
	      have any of the values accepted by the tixComboBox command.

       pathName configure ?option? ?value option value ...?
	      Query or modify the configuration options of the widget.	If no  option  is  speci-
	      fied,  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  speci-
	      fied 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 tixComboBox command.

       pathName flash index string
	      Flashes the ComboBox. flash is usually called by a -command procedure  to  acknowl-
	      edge to the user that he has selected a value for the ComboBox.

       pathName insert index string
	      Insert  the  string into the listbox at the specified index.  index must be a valid
	      listbox index.

       pathName pick index
	      Set the (index)th item in the listbox to be the current value of the ComboBox. As a
	      result,  the  value of the ComboBox is changed and the TCL command sepcified by the
	      -command option will be called.

       pathName subwidget  name ?args?
	      When no options are given, returns the pathname of the subwidget of  the	specified
	      name.

	      When  options  are  given,  the  widget  command of the specified subwidget will be
	      called with these options.

BINDINGS
       [1]    If the -selectmode is "immediate", when the user enters a keystroke, clicks  on  an
	      item  or drags the mouse pointer in the listbox, the -value of the ComboBox will be
	      immediately set to this item and the -command procedure will be called.

       [2]    If the -selectmode is "browse", when the user enters a keystroke, clicks on an item
	      or  drags  the mouse pointer in the listbox, the -selection of the ComboBox will be
	      immediately set to the new content of the entry subwidget; also the -browsecmd pro-
	      cedure will be called. The -value option will be changed only when the user invokes
	      the ComboBox (see [3] below). If the user presses the <Escape> key at any time, any
	      new  -selection  will  be  ignored  and the text inside the entry subwidget will be
	      restored to the current -value of the ComboBox.

       [3]    If the -dropdown option is true, the user can invoke the ComboBox by releasing  the
	      left  mouse button over the desired item in the listbox. If the -dropdown option is
	      false, the user can invoke the ComboBox by double-clicking over the desired item in
	      the  listbox.  In  both cases, the user can also invoke the listbox by pressing the
	      <Return> or <Tab> key inside the entry subwidget, or switching the input	focus  to
	      another widget inside the same toplevel widget

BUGS
       Starting  from Tix vetsion 4.0, the default -value of the ComboBox is the empty string. If
       you want the ComboBox to show a string by default, you must configure  its  -value  option
       explicitly.

KEYWORDS
       Tix(n), ComboBox(n), listbox(n)

Tix					       4.0				   tixComboBox(n)


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