Hi Monks
How can I change a Tk main window fileevent to go for reading the incoming data every 100ms. Below is my code.
You may even give other small example as well to show this.
use Tk;
open(CHILD, "./fileevent2piper 2>&1 |") or die "Can't open: $!";
my $mw = new MainWindow;
my $t = $mw->Scrolled("Text",-width => 80, -height => 25, -wrap => 'no
+ne');
$t->pack(-expand => 1);
$mw->fileevent('CHILD', 'readable', [\&fill_text_widget, $mw]);
MainLoop;
sub fill_text_widget {
my ($widget) = @_;
if (eof(CHILD)) {
$widget->fileevent('CHILD', "readable", undef); # cancel bindi
+ng
return ;
} else {
if (sysread ('CHILD', $_, 128)) {
print "here $_ \n";
$t->insert('end', $_); # Append the data read
$t->yview('end');
} else {
$t->insert('end', times);
$t->yview('end');
$widget->fileevent('CHILD', "readable", undef); # cancel b
+inding
return;
}
}
}
The fileevent2piper code is
$|++;
for my $i ( 0 .. 5) {
print $i, "\n";
print `ls -la`;
sleep 1;
}
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