#!/usr/local/bin/perl -w
use Tk;
use English;
$count = 0;
sub flash_widget
{
my($w, $option, $val1, $val2, $interval) = @ARG;
$w->configure($option => $val1);
$w->after($interval, [\&flash_widget, $w, $option, $val2, $val1, $interval] );
$count++;
} # end flash_widget
$mw = MainWindow->new;
$b = $mw->Button(-text => 'Flash', -bg => 'azure');
$b->pack;
flash_widget $b, -background, 'azure', 'yellow', 1000;
$mw->update;
print STDERR "Before ",$start = Leak::NoteSV($hook),"\n";
$count = 0;
#MainLoop;
while ($count < 20)
{
Tk::DoOneEvent(0);
}
print STDERR "After ",$end = Leak::CheckSV($hook),"\n";
print "Average ",($end-$start)/$count,"\n";