36 lines
810 B
Tcl
36 lines
810 B
Tcl
#!/usr/local/bin/wish -f
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#
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# This script generates a counter with start and stop buttons.
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label .counter -text 0.00 -relief raised -width 10
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button .start -text Start -command {
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if $stopped {
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set stopped 0
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tick
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}
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}
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button .stop -text Stop -command {set stopped 1}
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pack .counter -side bottom -fill both
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pack .start -side left -fill both -expand yes
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pack .stop -side right -fill both -expand yes
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set seconds 0
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set hundredths 0
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set stopped 1
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proc tick {} {
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global seconds hundredths stopped
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if $stopped return
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after 50 tick
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set hundredths [expr $hundredths+5]
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if {$hundredths >= 100} {
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set hundredths 0
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set seconds [expr $seconds+1]
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}
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.counter config -text [format "%d.%02d" $seconds $hundredths]
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}
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bind . <Control-c> {destroy .}
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bind . <Control-q> {destroy .}
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focus .
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