+++ /dev/null
-'\"
-'\" Copyright (c) 1992 The Regents of the University of California.
-'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.TH tk n 8.4 Tk "Tk Built-In Commands"
-.so man.macros
-.BS
-'\" Note: do not modify the .SH NAME line immediately below!
-.SH NAME
-tk \- Manipulate Tk internal state
-.SH SYNOPSIS
-\fBtk\fR \fIoption \fR?\fIarg arg ...\fR?
-.BE
-.SH DESCRIPTION
-.PP
-The \fBtk\fR command provides access to miscellaneous
-elements of Tk's internal state.
-Most of the information manipulated by this command pertains 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 \fIoption\fR argument. The legal forms are:
-.TP
-\fBtk appname \fR?\fInewName\fR?
-.
-If \fInewName\fR is not specified, this command returns the name
-of the application (the name that may be used in \fBsend\fR
-commands to communicate with the application).
-If \fInewName\fR is specified, then the name of the application
-is changed to \fInewName\fR.
-If the given name is already in use, then a suffix of the form
-.QW "\fB #2\fR"
-or
-.QW "\fB #3\fR"
-is appended in order to make the name unique.
-The command's result is the name actually chosen.
-\fInewName\fR 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 \fBsend\fR command,
-this command will reenable them and recreate the \fBsend\fR
-command.
-.TP
-\fBtk busy \fIsubcommand\fR ...
-.
-This command controls the marking of window hierarchies as
-.QW busy ,
-rendering them non-interactive while some other operation is proceeding. For
-more details see the \fBbusy\fR manual page.
-.TP
-\fBtk caret \fIwindow \fR?\fB\-x \fIx\fR? ?\fB\-y \fIy\fR? ?\fB\-height \fIheight\fR?
-.
-Sets and queries the caret location for the display of the specified
-Tk window \fIwindow\fR. 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. \fB\-x\fR and \fB\-y\fR represent window-relative coordinates, and
-\fB\-height\fR is the height of the current cursor location, or the height
-of the specified \fIwindow\fR if none is given.
-.TP
-\fBtk inactive \fR?\fB\-displayof \fIwindow\fR? ?\fBreset\fR?
-.
-Returns a positive integer, the number of milliseconds since the last
-time the user interacted with the system. If the \fB\-displayof\fR
-option is given then the return value refers to the display of
-\fIwindow\fR; otherwise it refers to the display of the application's
-main window.
-.RS
-.PP
-\fBtk inactive\fR will return \-1, if querying the user inactive time
-is not supported by the system, and in safe interpreters.
-.PP
-If the literal string \fBreset\fR 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 an
-error if tried.
-.RE
-.TP
-\fBtk fontchooser \fIsubcommand\fR ...
-Controls the Tk font selection dialog. For more details see the
-\fBfontchooser\fR manual page.
-.TP
-\fBtk scaling \fR?\fB\-displayof \fIwindow\fR? ?\fInumber\fR?
-.
-Sets and queries the current scaling factor used by Tk to convert between
-physical units (for example, points, inches, or millimeters) and pixels. The
-\fInumber\fR argument is a floating point number that specifies the number of
-pixels per point on \fIwindow\fR's display. If the \fIwindow\fR argument is
-omitted, it defaults to the main window. If the \fInumber\fR argument is
-omitted, the current value of the scaling factor is returned.
-.RS
-.PP
-A
-.QW point
-is a unit of measurement equal to 1/72 inch. A scaling 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
-displayed 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
-accommodate the new scaling factor.
-.RE
-.TP
-\fBtk useinputmethods \fR?\fB\-displayof \fIwindow\fR? ?\fIboolean\fR?
-.
-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 \fIwindow\fR argument is omitted, it defaults
-to the main window. If the \fIboolean\fR argument is omitted, the current
-state is returned. This is turned on by default for the main display.
-.TP
-\fBtk windowingsystem\fR
-.
-Returns the current Tk windowing system, one of
-\fBx11\fR (X11-based), \fBwin32\fR (MS Windows),
-or \fBaqua\fR (Mac OS X Aqua).
-.SH "SEE ALSO"
-busy(n), fontchooser(n), send(n), winfo(n)
-.SH KEYWORDS
-application name, send
-'\" Local Variables:
-'\" mode: nroff
-'\" End:
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