/usr/lib/grass64/bwidget/widget.tcl is in grass-gui 6.4.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# widget.tcl
# This file is part of Unifix BWidget Toolkit
# $Id: widget.tcl 10192 2002-01-24 19:25:32Z radim $
# ------------------------------------------------------------------------------
# Index of commands:
# - Widget::tkinclude
# - Widget::bwinclude
# - Widget::declare
# - Widget::addmap
# - Widget::init
# - Widget::destroy
# - Widget::setoption
# - Widget::configure
# - Widget::cget
# - Widget::subcget
# - Widget::hasChanged
# - Widget::_get_tkwidget_options
# - Widget::_test_tkresource
# - Widget::_test_bwresource
# - Widget::_test_synonym
# - Widget::_test_string
# - Widget::_test_flag
# - Widget::_test_enum
# - Widget::_test_int
# - Widget::_test_boolean
# ------------------------------------------------------------------------------
namespace eval Widget {
variable _optiontype
variable _class
variable _tk_widget
array set _optiontype {
TkResource Widget::_test_tkresource
BwResource Widget::_test_bwresource
Enum Widget::_test_enum
Int Widget::_test_int
Boolean Widget::_test_boolean
String Widget::_test_string
Flag Widget::_test_flag
Synonym Widget::_test_synonym
}
proc use {} {}
}
# ------------------------------------------------------------------------------
# Command Widget::tkinclude
# Includes tk widget resources to BWidget widget.
# class class name of the BWidget
# tkwidget tk widget to include
# subpath subpath to configure
# args additionnal args for included options
# ------------------------------------------------------------------------------
proc Widget::tkinclude { class tkwidget subpath args } {
foreach {cmd lopt} $args {
# cmd can be
# include options to include lopt = {opt ...}
# remove options to remove lopt = {opt ...}
# rename options to rename lopt = {opt newopt ...}
# prefix options to prefix lopt = {prefix opt opt ...}
# initialize set default value for options lopt = {opt value ...}
# readonly set readonly flag for options lopt = {opt flag ...}
switch -- $cmd {
remove {
foreach option $lopt {
set remove($option) 1
}
}
include {
foreach option $lopt {
set include($option) 1
}
}
prefix {
set prefix [lindex $lopt 0]
foreach option [lrange $lopt 1 end] {
set rename($option) "-$prefix[string range $option 1 end]"
}
}
rename -
readonly -
initialize {
array set $cmd $lopt
}
default {
return -code error "invalid argument \"$cmd\""
}
}
}
namespace eval $class {}
upvar 0 ${class}::opt classopt
upvar 0 ${class}::map classmap
# create resources informations from tk widget resources
foreach optdesc [_get_tkwidget_options $tkwidget] {
set option [lindex $optdesc 0]
if { (![info exists include] || [info exists include($option)]) &&
![info exists remove($option)] } {
if { [llength $optdesc] == 3 } {
# option is a synonym
set syn [lindex $optdesc 1]
if { ![info exists remove($syn)] } {
# original option is not removed
if { [info exists rename($syn)] } {
set classopt($option) [list Synonym $rename($syn)]
} else {
set classopt($option) [list Synonym $syn]
}
}
} else {
if { [info exists rename($option)] } {
set realopt $option
set option $rename($option)
} else {
set realopt $option
}
if { [info exists initialize($option)] } {
set value $initialize($option)
} else {
set value [lindex $optdesc 1]
}
if { [info exists readonly($option)] } {
set ro $readonly($option)
} else {
set ro 0
}
set classopt($option) [list TkResource $value $ro [list $tkwidget $realopt]]
lappend classmap($option) $subpath "" $realopt
}
}
}
}
# ------------------------------------------------------------------------------
# Command Widget::bwinclude
# Includes BWidget resources to BWidget widget.
# class class name of the BWidget
# subclass BWidget class to include
# subpath subpath to configure
# args additionnal args for included options
# ------------------------------------------------------------------------------
proc Widget::bwinclude { class subclass subpath args } {
foreach {cmd lopt} $args {
# cmd can be
# include options to include lopt = {opt ...}
# remove options to remove lopt = {opt ...}
# rename options to rename lopt = {opt newopt ...}
# prefix options to prefix lopt = {prefix opt opt ...}
# initialize set default value for options lopt = {opt value ...}
# readonly set readonly flag for options lopt = {opt flag ...}
switch -- $cmd {
remove {
foreach option $lopt {
set remove($option) 1
}
}
include {
foreach option $lopt {
set include($option) 1
}
}
prefix {
set prefix [lindex $lopt 0]
foreach option [lrange $lopt 1 end] {
set rename($option) "-$prefix[string range $option 1 end]"
}
}
rename -
readonly -
initialize {
array set $cmd $lopt
}
default {
return -code error "invalid argument \"$cmd\""
}
}
}
namespace eval $class {}
upvar 0 ${class}::opt classopt
upvar 0 ${class}::map classmap
upvar 0 ${subclass}::opt subclassopt
# create resources informations from BWidget resources
foreach {option optdesc} [array get subclassopt] {
if { (![info exists include] || [info exists include($option)]) &&
![info exists remove($option)] } {
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
# option is a synonym
set syn [lindex $optdesc 1]
if { ![info exists remove($syn)] } {
if { [info exists rename($syn)] } {
set classopt($option) [list Synonym $rename($syn)]
} else {
set classopt($option) [list Synonym $syn]
}
}
} else {
if { [info exists rename($option)] } {
set realopt $option
set option $rename($option)
} else {
set realopt $option
}
if { [info exists initialize($option)] } {
set value $initialize($option)
} else {
set value [lindex $optdesc 1]
}
if { [info exists readonly($option)] } {
set ro $readonly($option)
} else {
set ro [lindex $optdesc 2]
}
set classopt($option) [list $type $value $ro [lindex $optdesc 3]]
lappend classmap($option) $subpath $subclass $realopt
}
}
}
}
# ------------------------------------------------------------------------------
# Command Widget::declare
# Declares new options to BWidget class.
# ------------------------------------------------------------------------------
proc Widget::declare { class optlist } {
variable _optiontype
namespace eval $class {}
upvar 0 ${class}::opt classopt
foreach optdesc $optlist {
set option [lindex $optdesc 0]
set optdesc [lrange $optdesc 1 end]
set type [lindex $optdesc 0]
if { ![info exists _optiontype($type)] } {
# invalid resource type
return -code error "invalid option type \"$type\""
}
if { ![string compare $type "Synonym"] } {
# test existence of synonym option
set syn [lindex $optdesc 1]
if { ![info exists classopt($syn)] } {
return -code error "unknow option \"$syn\" for Synonym \"$option\""
}
set classopt($option) [list Synonym $syn]
continue
}
# all other resource may have default value, readonly flag and
# optional arg depending on type
set value [lindex $optdesc 1]
set ro [lindex $optdesc 2]
set arg [lindex $optdesc 3]
if { ![string compare $type "BwResource"] } {
# We don't keep BwResource. We simplify to type of sub BWidget
set subclass [lindex $arg 0]
set realopt [lindex $arg 1]
if { ![string length $realopt] } {
set realopt $option
}
upvar 0 ${subclass}::opt subclassopt
if { ![info exists subclassopt($realopt)] } {
return -code error "unknow option \"$realopt\""
}
set suboptdesc $subclassopt($realopt)
if { $value == "" } {
# We initialize default value
set value [lindex $suboptdesc 1]
}
set type [lindex $suboptdesc 0]
set ro [lindex $suboptdesc 2]
set arg [lindex $suboptdesc 3]
set classopt($option) [list $type $value $ro $arg]
continue
}
# retreive default value for TkResource
if { ![string compare $type "TkResource"] } {
set tkwidget [lindex $arg 0]
set realopt [lindex $arg 1]
if { ![string length $realopt] } {
set realopt $option
}
set tkoptions [_get_tkwidget_options $tkwidget]
if { ![string length $value] } {
# We initialize default value
set value [lindex [lindex $tkoptions [lsearch $tkoptions [list $realopt *]]] end]
}
set classopt($option) [list TkResource $value $ro [list $tkwidget $realopt]]
continue
}
# for any other resource type, we keep original optdesc
set classopt($option) [list $type $value $ro $arg]
}
}
# ------------------------------------------------------------------------------
# Command Widget::addmap
# ------------------------------------------------------------------------------
proc Widget::addmap { class subclass subpath options } {
upvar 0 ${class}::map classmap
foreach {option realopt} $options {
if { ![string length $realopt] } {
set realopt $option
}
lappend classmap($option) $subpath $subclass $realopt
}
}
# ------------------------------------------------------------------------------
# Command Widget::syncoptions
# ------------------------------------------------------------------------------
proc Widget::syncoptions { class subclass subpath options } {
upvar 0 ${class}::sync classync
foreach {option realopt} $options {
if { ![string length $realopt] } {
set realopt $option
}
set classync($option) [list $subpath $subclass $realopt]
}
}
# ------------------------------------------------------------------------------
# Command Widget::init
# ------------------------------------------------------------------------------
proc Widget::init { class path options } {
variable _class
variable _optiontype
upvar 0 ${class}::opt classopt
upvar 0 ${class}::map classmap
upvar 0 ${class}::$path:opt pathopt
upvar 0 ${class}::$path:mod pathmod
catch {unset pathopt}
catch {unset pathmod}
set fpath ".#BWidgetClass#$class"
regsub -all "::" $class "" rdbclass
if { ![winfo exists $fpath] } {
frame $fpath -class $rdbclass
}
foreach {option optdesc} [array get classopt] {
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set option [lindex $optdesc 1]
set optdesc $classopt($option)
set type [lindex $optdesc 0]
}
if { ![string compare $type "TkResource"] } {
set alt [lindex [lindex $optdesc 3] 1]
} else {
set alt ""
}
set optdb [lindex [_configure_option $option $alt] 0]
set def [option get $fpath $optdb $rdbclass]
if { [string length $def] } {
set pathopt($option) $def
} else {
set pathopt($option) [lindex $optdesc 1]
}
set pathmod($option) 0
}
set _class($path) $class
foreach {option value} $options {
if { ![info exists classopt($option)] } {
unset pathopt
unset pathmod
return -code error "unknown option \"$option\""
}
set optdesc $classopt($option)
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set option [lindex $optdesc 1]
set optdesc $classopt($option)
set type [lindex $optdesc 0]
}
set pathopt($option) [$_optiontype($type) $option $value [lindex $optdesc 3]]
}
}
# ------------------------------------------------------------------------------
# Command Widget::destroy
# ------------------------------------------------------------------------------
proc Widget::destroy { path } {
variable _class
set class $_class($path)
upvar 0 ${class}::$path:opt pathopt
upvar 0 ${class}::$path:mod pathmod
catch {unset pathopt}
catch {unset pathmod}
}
# ------------------------------------------------------------------------------
# Command Widget::configure
# ------------------------------------------------------------------------------
proc Widget::configure { path options } {
set len [llength $options]
if { $len <= 1 } {
return [_get_configure $path $options]
} elseif { $len % 2 == 1 } {
return -code error "incorrect number of arguments"
}
variable _class
variable _optiontype
set class $_class($path)
upvar 0 ${class}::opt classopt
upvar 0 ${class}::map classmap
upvar 0 ${class}::$path:opt pathopt
upvar 0 ${class}::$path:mod pathmod
set window [_get_window $class $path]
foreach {option value} $options {
if { ![info exists classopt($option)] } {
return -code error "unknown option \"$option\""
}
set optdesc $classopt($option)
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set option [lindex $optdesc 1]
set optdesc $classopt($option)
set type [lindex $optdesc 0]
}
if { ![lindex $optdesc 2] } {
set curval $pathopt($option)
set newval [$_optiontype($type) $option $value [lindex $optdesc 3]]
if { [info exists classmap($option)] } {
foreach {subpath subclass realopt} $classmap($option) {
if { [string length $subclass] } {
${subclass}::configure $window$subpath $realopt $newval
} else {
$window$subpath configure $realopt $newval
}
}
}
set pathopt($option) $newval
set pathmod($option) [expr {[string compare $newval $curval] != 0}]
}
}
return {}
}
# ------------------------------------------------------------------------------
# Command Widget::cget
# ------------------------------------------------------------------------------
proc Widget::cget { path option } {
variable _class
if { ![info exists _class($path)] } {
return -code error "unknown widget $path"
}
set class $_class($path)
upvar 0 ${class}::opt classopt
upvar 0 ${class}::sync classync
upvar 0 ${class}::$path:opt pathopt
if { ![info exists classopt($option)] } {
return -code error "unknown option \"$option\""
}
set optdesc $classopt($option)
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set option [lindex $optdesc 1]
}
if { [info exists classync($option)] } {
set window [_get_window $class $path]
foreach {subpath subclass realopt} $classync($option) {
if { [string length $subclass] } {
set pathopt($option) [${subclass}::cget $window$subpath $realopt]
} else {
set pathopt($option) [$window$subpath cget $realopt]
}
}
}
return $pathopt($option)
}
# ------------------------------------------------------------------------------
# Command Widget::subcget
# ------------------------------------------------------------------------------
proc Widget::subcget { path subwidget } {
variable _class
set class $_class($path)
upvar 0 ${class}::map classmap
upvar 0 ${class}::$path:opt pathopt
set result {}
foreach {option map} [array get classmap] {
foreach {subpath subclass realopt} $map {
if { ![string compare $subpath $subwidget] } {
lappend result $realopt $pathopt($option)
}
}
}
return $result
}
# ------------------------------------------------------------------------------
# Command Widget::hasChanged
# ------------------------------------------------------------------------------
proc Widget::hasChanged { path option pvalue } {
upvar $pvalue value
variable _class
set class $_class($path)
upvar 0 ${class}::$path:opt pathopt
upvar 0 ${class}::$path:mod pathmod
set value $pathopt($option)
set result $pathmod($option)
set pathmod($option) 0
return $result
}
# ------------------------------------------------------------------------------
# Command Widget::setoption
# ------------------------------------------------------------------------------
proc Widget::setoption { path option value } {
variable _class
set class $_class($path)
upvar 0 ${class}::$path:opt pathopt
set pathopt($option) $value
}
# ------------------------------------------------------------------------------
# Command Widget::getoption
# ------------------------------------------------------------------------------
proc Widget::getoption { path option } {
variable _class
set class $_class($path)
upvar 0 ${class}::$path:opt pathopt
return $pathopt($option)
}
# ------------------------------------------------------------------------------
# Command Widget::_get_window
# returns the window corresponding to widget path
# ------------------------------------------------------------------------------
proc Widget::_get_window { class path } {
set idx [string last "#" $path]
if { $idx != -1 && ![string compare [string range $path [expr {$idx+1}] end] $class] } {
return [string range $path 0 [expr {$idx-1}]]
} else {
return $path
}
}
# ------------------------------------------------------------------------------
# Command Widget::_get_configure
# returns the configuration list of options
# (as tk widget do - [$w configure ?option?])
# ------------------------------------------------------------------------------
proc Widget::_get_configure { path options } {
variable _class
set class $_class($path)
upvar 0 ${class}::opt classopt
upvar 0 ${class}::map classmap
upvar 0 ${class}::$path:opt pathopt
upvar 0 ${class}::$path:mod pathmod
set len [llength $options]
if { !$len } {
set result {}
foreach option [lsort [array names classopt]] {
set optdesc $classopt($option)
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set syn $option
set option [lindex $optdesc 1]
set optdesc $classopt($option)
set type [lindex $optdesc 0]
} else {
set syn ""
}
if { ![string compare $type "TkResource"] } {
set alt [lindex [lindex $optdesc 3] 1]
} else {
set alt ""
}
set res [_configure_option $option $alt]
if { $syn == "" } {
lappend result [concat $option $res [list [lindex $optdesc 1]] [list [cget $path $option]]]
} else {
lappend result [list $syn [lindex $res 0]]
}
}
return $result
} elseif { $len == 1 } {
set option [lindex $options 0]
if { ![info exists classopt($option)] } {
return -code error "unknown option \"$option\""
}
set optdesc $classopt($option)
set type [lindex $optdesc 0]
if { ![string compare $type "Synonym"] } {
set option [lindex $optdesc 1]
set optdesc $classopt($option)
set type [lindex $optdesc 0]
}
if { ![string compare $type "TkResource"] } {
set alt [lindex [lindex $optdesc 3] 1]
} else {
set alt ""
}
set res [_configure_option $option $alt]
return [concat $option $res [list [lindex $optdesc 1]] [list [cget $path $option]]]
}
}
# ------------------------------------------------------------------------------
# Command Widget::_configure_option
# ------------------------------------------------------------------------------
proc Widget::_configure_option { option altopt } {
variable _optiondb
variable _optionclass
if { [info exists _optiondb($option)] } {
set optdb $_optiondb($option)
} else {
set optdb [string range $option 1 end]
}
if { [info exists _optionclass($option)] } {
set optclass $_optionclass($option)
} elseif { [string length $altopt] } {
if { [info exists _optionclass($altopt)] } {
set optclass $_optionclass($altopt)
} else {
set optclass [string range $altopt 1 end]
}
} else {
set optclass [string range $option 1 end]
}
return [list $optdb $optclass]
}
# ------------------------------------------------------------------------------
# Command Widget::_get_tkwidget_options
# ------------------------------------------------------------------------------
proc Widget::_get_tkwidget_options { tkwidget } {
variable _tk_widget
variable _optiondb
variable _optionclass
if { ![info exists _tk_widget($tkwidget)] } {
set widget [$tkwidget ".#BWidget#$tkwidget"]
set config [$widget configure]
foreach optlist $config {
set opt [lindex $optlist 0]
if { [llength $optlist] == 2 } {
set refsyn [lindex $optlist 1]
# search for class
set idx [lsearch $config [list * $refsyn *]]
if { $idx == -1 } {
if { [string index $refsyn 0] == "-" } {
# search for option (tk8.1b1 bug)
set idx [lsearch $config [list $refsyn * *]]
} else {
# last resort
set idx [lsearch $config [list -[string tolower $refsyn] * *]]
}
if { $idx == -1 } {
# fed up with "can't read classopt()"
return -code error "can't find option of synonym $opt"
}
}
set syn [lindex [lindex $config $idx] 0]
set def [lindex [lindex $config $idx] 3]
lappend _tk_widget($tkwidget) [list $opt $syn $def]
} else {
set def [lindex $optlist 3]
lappend _tk_widget($tkwidget) [list $opt $def]
set _optiondb($opt) [lindex $optlist 1]
set _optionclass($opt) [lindex $optlist 2]
}
}
}
return $_tk_widget($tkwidget)
}
# ------------------------------------------------------------------------------
# Command Widget::_test_tkresource
# ------------------------------------------------------------------------------
proc Widget::_test_tkresource { option value arg } {
set tkwidget [lindex $arg 0]
set realopt [lindex $arg 1]
set path ".#BWidget#$tkwidget"
set old [$path cget $realopt]
$path configure $realopt $value
set res [$path cget $realopt]
$path configure $realopt $old
return $res
}
# ------------------------------------------------------------------------------
# Command Widget::_test_bwresource
# ------------------------------------------------------------------------------
proc Widget::_test_bwresource { option value arg } {
return -code error "bad option type BwResource in widget"
}
# ------------------------------------------------------------------------------
# Command Widget::_test_synonym
# ------------------------------------------------------------------------------
proc Widget::_test_synonym { option value arg } {
return -code error "bad option type Synonym in widget"
}
# ------------------------------------------------------------------------------
# Command Widget::_test_string
# ------------------------------------------------------------------------------
proc Widget::_test_string { option value arg } {
return $value
}
# ------------------------------------------------------------------------------
# Command Widget::_test_flag
# ------------------------------------------------------------------------------
proc Widget::_test_flag { option value arg } {
set len [string length $value]
set res ""
for {set i 0} {$i < $len} {incr i} {
set c [string index $value $i]
if { [string first $c $arg] == -1 } {
return -code error "bad [string range $option 1 end] value \"$value\": characters must be in \"$arg\""
}
if { [string first $c $res] == -1 } {
append res $c
}
}
return $res
}
# ------------------------------------------------------------------------------
# Command Widget::_test_enum
# ------------------------------------------------------------------------------
proc Widget::_test_enum { option value arg } {
if { [lsearch $arg $value] == -1 } {
set last [lindex $arg end]
set sub [lreplace $arg end end]
if { [llength $sub] } {
set str "[join $sub ", "] or $last"
} else {
set str $last
}
return -code error "bad [string range $option 1 end] value \"$value\": must be $str"
}
return $value
}
# ------------------------------------------------------------------------------
# Command Widget::_test_int
# ------------------------------------------------------------------------------
proc Widget::_test_int { option value arg } {
set binf [lindex $arg 0]
set bsup [lindex $arg 1]
if { $binf != "" } {set binf ">$binf"}
if { $bsup != "" } {set bsup "<$bsup"}
if { [catch {expr $value}] || $value != int($value) ||
!($binf == "" || [expr $value$binf]) ||
!($bsup == "" || [expr $value$bsup]) } {
return -code error "bad [string range $option 1 end] value \"$value\": must be integer $binf $bsup"
}
return $value
}
# ------------------------------------------------------------------------------
# Command Widget::_test_boolean
# ------------------------------------------------------------------------------
proc Widget::_test_boolean { option value arg } {
if { $value == 1 ||
![string compare $value "true"] ||
![string compare $value "yes"] } {
set value 1
} elseif { $value == 0 ||
![string compare $value "false"] ||
![string compare $value "no"] } {
set value 0
} else {
return -code error "bad [string range $option 1 end] value \"$value\": must be boolean"
}
return $value
}
# ------------------------------------------------------------------------------
# Command Widget::focusNext
# Same as tk_focusNext, but call Widget::focusOK
# ------------------------------------------------------------------------------
proc Widget::focusNext { w } {
set cur $w
while 1 {
# Descend to just before the first child of the current widget.
set parent $cur
set children [winfo children $cur]
set i -1
# Look for the next sibling that isn't a top-level.
while 1 {
incr i
if {$i < [llength $children]} {
set cur [lindex $children $i]
if {[winfo toplevel $cur] == $cur} {
continue
} else {
break
}
}
# No more siblings, so go to the current widget's parent.
# If it's a top-level, break out of the loop, otherwise
# look for its next sibling.
set cur $parent
if {[winfo toplevel $cur] == $cur} {
break
}
set parent [winfo parent $parent]
set children [winfo children $parent]
set i [lsearch -exact $children $cur]
}
if {($cur == $w) || [focusOK $cur]} {
return $cur
}
}
}
# ------------------------------------------------------------------------------
# Command Widget::focusPrev
# Same as tk_focusPrev, but call Widget::focusOK
# ------------------------------------------------------------------------------
proc Widget::focusPrev { w } {
set cur $w
while 1 {
# Collect information about the current window's position
# among its siblings. Also, if the window is a top-level,
# then reposition to just after the last child of the window.
if {[winfo toplevel $cur] == $cur} {
set parent $cur
set children [winfo children $cur]
set i [llength $children]
} else {
set parent [winfo parent $cur]
set children [winfo children $parent]
set i [lsearch -exact $children $cur]
}
# Go to the previous sibling, then descend to its last descendant
# (highest in stacking order. While doing this, ignore top-levels
# and their descendants. When we run out of descendants, go up
# one level to the parent.
while {$i > 0} {
incr i -1
set cur [lindex $children $i]
if {[winfo toplevel $cur] == $cur} {
continue
}
set parent $cur
set children [winfo children $parent]
set i [llength $children]
}
set cur $parent
if {($cur == $w) || [focusOK $cur]} {
return $cur
}
}
}
# ------------------------------------------------------------------------------
# Command Widget::focusOK
# Same as tk_focusOK, but handles -editable option and whole tags list.
# ------------------------------------------------------------------------------
proc Widget::focusOK { w } {
set code [catch {$w cget -takefocus} value]
if { $code == 1 } {
return 0
}
if {($code == 0) && ($value != "")} {
if {$value == 0} {
return 0
} elseif {$value == 1} {
return [winfo viewable $w]
} else {
set value [uplevel \#0 $value $w]
if {$value != ""} {
return $value
}
}
}
if {![winfo viewable $w]} {
return 0
}
set code [catch {$w cget -state} value]
if {($code == 0) && ($value == "disabled")} {
return 0
}
set code [catch {$w cget -editable} value]
if {($code == 0) && !$value} {
return 0
}
set top [winfo toplevel $w]
foreach tags [bindtags $w] {
if { [string compare $tags $top] &&
[string compare $tags "all"] &&
[regexp Key [bind $tags]] } {
return 1
}
}
return 0
}
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