tk man page on AIX

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tk(n)			     Tk Built-In Commands			 tk(n)

______________________________________________________________________________

NAME
       tk - Manipulate Tk internal state

SYNOPSIS
       tk option ?arg arg ...?
_________________________________________________________________

DESCRIPTION
       The tk command provides access to miscellaneous elements of Tk's inter‐
       nal state.  Most of the information manipulated by  this	 command  per‐
       tains  to the application as a whole, or to a screen or display, rather
       than to a particular window.  The command can take any of a  number  of
       different forms depending on the option argument.  The legal forms are:

       tk appname ?newName?
	      If  newName  is  not specified, this command returns the name of
	      the application (the name that may be used in send  commands  to
	      communicate  with	 the  application).   If newName is specified,
	      then the name of the application is changed to newName.  If  the
	      given name is already in use, then a suffix of the form “ #2” or
	      “ #3” is appended in order to make the name  unique.   The  com‐
	      mand's  result  is the name actually chosen.  newName should not
	      start with a capital letter.  This will  interfere  with	option
	      processing, since names starting with capitals are assumed to be
	      classes;	as a result, Tk may not be able to find	 some  options
	      for  the	application.   If sends have been disabled by deleting
	      the send command, this command will reenable them	 and  recreate
	      the send command.

       tk caret window ?-x x? ?-y y? ?-height height?
	      Sets and queries the caret location for the display of the spec‐
	      ified Tk window window.  The caret  is  the  per-display	cursor
	      location	used  for indicating global focus (e.g. to comply with
	      Microsoft Accessibility guidelines), as well as for location  of
	      the  over-the-spot XIM (X Input Methods) or Windows IME windows.
	      If no options are specified, the last values  used  for  setting
	      the  caret  are  return  in option-value pair format.  -x and -y
	      represent window-relative coordinates, and -height is the height
	      of  the  current cursor location, or the height of the specified
	      window if none is given.

       tk scaling ?-displayof window? ?number?
	      Sets and queries the current scaling factor used by Tk  to  con‐
	      vert  between  physical  units  (for example, points, inches, or
	      millimeters) and pixels.	The  number  argument  is  a  floating
	      point  number  that  specifies the number of pixels per point on
	      window's	display.   If  the  window  argument  is  omitted,  it
	      defaults to the main window.  If the number argument is omitted,
	      the current value of the scaling factor is returned.

	      A “point” is a unit of measurement equal to 1/72 inch.  A	 scal‐
	      ing  factor  of  1.0  corresponds to 1 pixel per point, which is
	      equivalent to a standard 72 dpi monitor.	A  scaling  factor  of
	      1.25  would mean 1.25 pixels per point, which is the setting for
	      a 90 dpi monitor; setting the scaling factor to 1.25 on a 72 dpi
	      monitor  would  cause  everything	 in the application to be dis‐
	      played 1.25 times as large as normal.  The initial value for the
	      scaling  factor  is  set	when  the application starts, based on
	      properties of the installed monitor, but it can  be  changed  at
	      any time.	 Measurements made after the scaling factor is changed
	      will use the new scaling factor, but  it	is  undefined  whether
	      existing	widgets will resize themselves dynamically to accommo‐
	      date the new scaling factor.

       tk inactive ?-displayof window? ?reset?
	      Returns a positive integer, the number of milliseconds since the
	      last time the user interacted with the system. If the -displayof
	      option is given then the return value refers to the  display  of
	      window;  otherwise it refers to the display of the application's
	      main window.

	      tk inactive will return -1, if querying the user	inactive  time
	      is not supported by the system, and in safe interpreters.

	      If  the literal string reset is given as an additional argument,
	      the timer is reset and an empty string  is  returned.  Resetting
	      the  inactivity  time is forbidden in safe interpreters and will
	      throw and error if tried.

       tk useinputmethods ?-displayof window? ?boolean?
	      Sets and queries the state of whether Tk should use XIM (X Input
	      Methods) for filtering events.  The resulting state is returned.
	      XIM is used in some locales (i.e., Japanese, Korean), to	handle
	      special  input  devices.	This feature is only significant on X.
	      If XIM support is not available, this will always return 0.   If
	      the  window argument is omitted, it defaults to the main window.
	      If the  boolean  argument	 is  omitted,  the  current  state  is
	      returned.	 This is turned on by default for the main display.

       tk windowingsystem
	      Returns the current Tk windowing system, one of x11 (X11-based),
	      win32 (MS Windows), or aqua (Mac OS X Aqua).

SEE ALSO
       send(n), winfo(n)

KEYWORDS
       application name, send

Tk				      8.4				 tk(n)
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