1tkvars(3) User Contributed Perl Documentation tkvars(3)
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6 Tk::tkvars - Variables used or set by Tk
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9 The following perl variables are either set or used by Tk at various
10 times in its execution. (For a list of variables used by perl see
11 perlvar.)
12 $Tk::library
14 This variable holds the file name for a directory containing the
15 modules related to Tk. These modules include an initialization
16 file that is normally processed whenever a Tk application starts
17 up, plus other files containing procedures that implement default
18 behaviors for widgets. The initial value of $Tk::library is set
19 when Tk is added to an interpreter; this is done by searching
20 searching for a directory named Tk in the directory where the file
21 Tk.pm, or the first directory Tk in @INC.
22 The TK_LIBRARY environment variable used by Tcl/Tk is not supported
24 by perl/Tk. Please use @INC to change where modules are searched.
25 Note: This is Tcl remnant. With perl it makes more sense to use
27 @INC and %INC).
28 $Tk::patchLevel
30 Contains a decimal integer giving the current patch level for Tk.
31 The patch level is incremented for each new release or patch, and
32 it uniquely identifies an official version of Tk.
33 Note: this is Tcl remnant. With perl it makes more sense to use
35 $Tk::VERSION described below.
36 $Tk::strictMotif
38 This variable is set to zero by default. If an application sets it
39 to one, then Tk attempts to adhere as closely as possible to Motif
40 look-and-feel standards. For example, active elements such as
41 buttons and scrollbar sliders will not change color when the
42 pointer passes over them.
43 $Tk::VERSION
45 The variable holds the current version number of the perl/Tk
46 release in the form major.minor. Major and minor are integers.
47 The major version number shows on which Tcl/Tk release perl/Tk is
49 based. E.g., 402 means based on Tcls Tk 4.2. (Patchlevel of Tcls
50 Tk are not incorporated because perl/Tk tended to be ``ahead'' of
51 them on some fixes and behind on others. The first digest of the
52 major version number increases in any Tk release that includes
53 changes that are not backward compatible (i.e. whenever existing
54 perl/Tk applications and scripts may have to change to work with
55 the new release).
56 The minor version depends on perl/Tk only. It uses the
58 'even'='stable', 'odd'='experimental' scheme that linux uses:
59 .0xx - inherently 'alpha'
61 .1xx - experimental 'beta'
62 .2xx - stable
63 .3xx - experimental
64 .4xx - stable
65 ...
66 The minor version number increases with each new release of Tk,
68 except that it resets to zero whenever the major version number
69 changes.
70 $Tk::version
72 The variable holds the current version number of the Tk library in
73 the form major.minor. Major and minor are integers. The major
74 version number increases in any Tk release that includes changes
75 that are not backward compatible (i.e. whenever existing Tk
76 applications and scripts may have to change to work with the new
77 release). The minor version number increases with each new release
78 of Tk, except that it resets to zero whenever the major version
79 number changes.
80 Note: this is Tcl remnant. With perl it makes more sense to use
82 $Tk::VERSION described above.
83
85 variables, version
86perl v5.30.0 2019-07-26 tkvars(3)