tkvars(3pm) User Contributed Perl Documentation tkvars(3pm)NAMETk::tkvars - Variables used or set by Tk
DESCRIPTION
The following perl variables are either set or used by Tk at various
times in its execution. (For a list of variables used by perl see
perlvar.)
$Tk::library
This variable holds the file name for a directory containing the
modules related to Tk. These modules include an initialization
file that is normally processed whenever a Tk application starts
up, plus other files containing procedures that implement default
behaviors for widgets. The initial value of $Tk::library is set
when Tk is added to an interpreter; this is done by searching
searching for a directory named Tk in the directory where the file
Tk.pm, or the first directory Tk in @INC.
The TK_LIBRARY environment variable used by Tcl/Tk is not supported
by perl/Tk. Please use @INC to change where modules are searched.
Note: This is Tcl remnant. With perl it makes more sense to use
@INC and %INC).
$Tk::patchLevel
Contains a decimal integer giving the current patch level for Tk.
The patch level is incremented for each new release or patch, and
it uniquely identifies an official version of Tk.
Note: this is Tcl remnant. With perl it makes more sense to use
$Tk::VERSION described below.
$Tk::strictMotif
This variable is set to zero by default. If an application sets it
to one, then Tk attempts to adhere as closely as possible to Motif
look-and-feel standards. For example, active elements such as
buttons and scrollbar sliders will not change color when the
pointer passes over them.
$Tk::VERSION
The variable holds the current version number of the perl/Tk
release in the form major.minor. Major and minor are integers.
The major version number shows on which Tcl/Tk release perl/Tk is
based. E.g., 402 means based on Tcls Tk 4.2. (Patchlevel of Tcls
Tk are not incorporated because perl/Tk tended to be ``ahead'' of
them on some fixes and behind on others. The first digest of the
major version number increases in any Tk release that includes
changes that are not backward compatible (i.e. whenever existing
perl/Tk applications and scripts may have to change to work with
the new release).
The minor version depends on perl/Tk only. It uses the
'even'='stable', 'odd'='experimental' scheme that linux uses:
.0xx - inherently 'alpha'
.1xx - experimental 'beta'
.2xx - stable
.3xx - experimental
.4xx - stable
...
The minor version number increases with each new release of Tk,
except that it resets to zero whenever the major version number
changes.
$Tk::version
The variable holds the current version number of the Tk library in
the form major.minor. Major and minor are integers. The major
version number increases in any Tk release that includes changes
that are not backward compatible (i.e. whenever existing Tk
applications and scripts may have to change to work with the new
release). The minor version number increases with each new release
of Tk, except that it resets to zero whenever the major version
number changes.
Note: this is Tcl remnant. With perl it makes more sense to use
$Tk::VERSION described above.
KEYWORDS
variables, version
perl v5.26.0 2017-07-22 tkvars(3pm)
