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- #!/usr/local/wish -f
- #
- # This script generates a counter with start and stop buttons.
-
- label .counter -text 0.00 -relief raised -width 10
- button .start -text Start -command "set stop 0; tick"
- button .stop -text Stop -command {set stop 1}
- pack append . .counter {bot fill} .start {left expand fill} \
- .stop {right expand fill}
-
- set seconds 0
- set hundredths 0
- set stop 0
-
- proc tick {} {
- global seconds hundredths stop
- if $stop return
- after 20 tick
- set hundredths [expr $hundredths+2]
- if {$hundredths >= 100} {
- set hundredths 0
- set seconds [expr $seconds+1]
- }
- .counter config -text [format "%d.%2d" $seconds $hundredths]
- }
-
- bind . <Control-c> {destroy .}
- bind . <Control-q> {destroy .}
- focus .
-