Perhaps you want to condition setting the state of the button depending on sensor state?

sub four() {
   my $buttonState = sensorIsOn() ? "disabled" : "normal";

   $Button1->configure(-state => $buttonState);  
   $buttonState = ucfirst $buttonState;
   print "State $buttonState\n";
}

[download]

Update: Fixed typo (thanks AnomalousMonk)

Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond

In reply to Re: Perl Tk Button Disabled by GrandFather
in thread Perl Tk Button Disabled by PilotinControl

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