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Updated: Thursday, June 13, 2019
 
 

menubutton (1t)

Name

menubutton - up menu indicator widgets

Synopsis

menubutton pathName ?options?

Description

menubutton(1t)               Tk Built-In Commands               menubutton(1t)



______________________________________________________________________________

NAME
       menubutton  -  Create and manipulate 'menubutton' pop-up menu indicator
       widgets

SYNOPSIS
       menubutton pathName ?options?

STANDARD OPTIONS
       -activebackground     -disabledforeground  -padx
       -activeforeground     -font                -pady
       -anchor               -foreground          -relief
       -background           -highlightbackground -takefocus
       -bitmap               -highlightcolor      -text
       -borderwidth          -highlightthickness  -textvariable
       -cursor               -image               -underline
       -compound             -justify             -wraplength

       See the options manual entry for details on the standard options.

WIDGET-SPECIFIC OPTIONS
       Command-Line Name:-direction
       Database Name:  direction
       Database Class: Height

              Specifies where the menu is going to be popup up. above tries to
              pop  the  menu above the menubutton. below tries to pop the menu
              below the menubutton. left tries to pop the menu to the left  of
              the  menubutton. right tries to pop the menu to the right of the
              menu button. flush pops the menu directly over  the  menubutton.
              In the case of above or below, the direction will be reversed if
              the menu would show offscreen.

       Command-Line Name:-height
       Database Name:  height
       Database Class: Height

              Specifies a desired height for the menubutton.  If an  image  or
              bitmap is being displayed in the menubutton then the value is in
              screen units (i.e. any of the forms acceptable to Tk_GetPixels);
              for  text  it is in lines of text.  If this option is not speci-
              fied, the menubutton's desired height is computed from the  size
              of the image or bitmap or text being displayed in it.

       Command-Line Name:-indicatoron
       Database Name:  indicatorOn
       Database Class: IndicatorOn

              The  value must be a proper boolean value.  If it is true then a
              small indicator rectangle will be displayed on the right side of
              the  menubutton and the default menu bindings will treat this as
              an option menubutton.  If false then no indicator will  be  dis-
              played.

       Command-Line Name:-menu
       Database Name:  menu
       Database Class: MenuName

              Specifies  the  path  name  of  the  menu  associated  with this
              menubutton.  The menu must be a child of the menubutton.

       Command-Line Name:-state
       Database Name:  state
       Database Class: State

              Specifies one of  three  states  for  the  menubutton:   normal,
              active,  or  disabled.   In  normal state the menubutton is dis-
              played using the foreground and background options.  The  active
              state is typically used when the pointer is over the menubutton.
              In active state the menubutton is displayed using  the  -active-
              foreground  and -activebackground options.  Disabled state means
              that the menubutton should be insensitive:  the default bindings
              will  refuse to activate the widget and will ignore mouse button
              presses.  In this state the -disabledforeground and  -background
              options determine how the button is displayed.

       Command-Line Name:-width
       Database Name:  width
       Database Class: Width

              Specifies  a  desired  width for the menubutton.  If an image or
              bitmap is being displayed in the menubutton then the value is in
              screen units (i.e. any of the forms acceptable to Tk_GetPixels);
              for text it is in characters.  If this option is not  specified,
              the  menubutton's desired width is computed from the size of the
              image or bitmap or text being displayed in it.
______________________________________________________________________________

INTRODUCTION
       The menubutton command creates a new  window  (given  by  the  pathName
       argument)  and  makes it into a menubutton widget.  Additional options,
       described above, may be specified on the command line or in the  option
       database  to  configure  aspects  of the menubutton such as its colors,
       font, text, and initial relief.  The  menubutton  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 menubutton is a widget that displays a  textual  string,  bitmap,  or
       image  and  is associated with a menu widget.  If text is displayed, it
       must all be in a single font, but it can occupy multiple lines  on  the
       screen  (if  it  contains newlines or if wrapping occurs because of the
       -wraplength option) and one of the characters may optionally be  under-
       lined  using  the  -underline  option.  In normal usage, pressing mouse
       button 1 over the menubutton causes the associated menu  to  be  posted
       just  underneath  the  menubutton.  If the mouse is moved over the menu
       before releasing the mouse button, the button release causes the under-
       lying  menu entry to be invoked.  When the button is released, the menu
       is unposted.

       Menubuttons are used to construct a tk_optionMenu, which  is  the  pre-
       ferred  mechanism for allowing a user to select one item from a list on
       Mac OS X.

       Menubuttons were also typically organized into groups called menu  bars
       that allow scanning: if the mouse button is pressed over one menubutton
       (causing it to post its menu) and  the  mouse  is  moved  over  another
       menubutton  in  the  same  menu bar without releasing the mouse button,
       then the menu of the first menubutton is unposted and the menu  of  the
       new  menubutton  is posted instead.  This use is deprecated in favor of
       setting a menu directly as a menubar; see the toplevel's  -menu  option
       for how to do that.

       There  are several interactions between menubuttons and menus;  see the
       menu manual entry for information on various menu configurations,  such
       as pulldown menus and option menus.

WIDGET COMMAND
       The  menubutton  command  creates a new Tcl command whose name is path-
       Name.  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.  The
       following commands are possible for menubutton widgets:

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

DEFAULT BINDINGS
       Tk automatically creates class bindings for menubuttons that give  them
       the following default behavior:

       [1]    A  menubutton  activates  whenever  the mouse passes over it and
              deactivates whenever the mouse leaves it.

       [2]    Pressing mouse button 1 over a menubutton posts the  menubutton:
              its  relief  changes to raised and its associated menu is posted
              under the menubutton.  If the mouse is  dragged  down  into  the
              menu with the button still down, and if the mouse button is then
              released over an entry in the menu, the menubutton  is  unposted
              and the menu entry is invoked.

       [3]    If  button 1 is pressed over a menubutton and then released over
              that menubutton, the menubutton stays posted: you can still move
              the mouse over the menu and click button 1 on an entry to invoke
              it.  Once a menu entry has been invoked, the menubutton  unposts
              itself.

       [4]    If  button  1 is pressed over a menubutton and then dragged over
              some other menubutton, the original  menubutton  unposts  itself
              and the new menubutton posts.

       [5]    If  button  1  is pressed over a menubutton and released outside
              any menubutton or menu, the menubutton unposts without  invoking
              any menu entry.

       [6]    When  a  menubutton  is  posted,  its associated menu claims the
              input focus to allow keyboard traversal of the menu and its sub-
              menus.  See the menu manual entry for details on these bindings.

       [7]    If  the  -underline  option  has been specified for a menubutton
              then keyboard traversal may be  used  to  post  the  menubutton:
              Alt+x, where x is the underlined character (or its lower-case or
              upper-case equivalent), may be typed in  any  window  under  the
              menubutton's toplevel to post the menubutton.

       [8]    The  F10  key  may  be  typed  in  any  window to post the first
              menubutton under its toplevel window that is not disabled.

       [9]    If a menubutton has the input focus, the space and  return  keys
              post the menubutton.

       If  the  menubutton's  state is disabled then none of the above actions
       occur:  the menubutton is completely non-responsive.

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


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | runtime/tk-8     |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       ttk::menubutton(n), menu(n)

KEYWORDS
       menubutton, widget



NOTES
       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source        was        downloaded        from         https://source-
       forge.net/projects/tcl/files/Tcl/8.6.7/tk8.6.7-src.tar.gz/download

       Further information about this software can be found on the open source
       community website at https://www.tcl.tk/.



Tk                                    4.0                       menubutton(1t)