1IO(3) User Contributed Perl Documentation IO(3)
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6 Tk::IO - high level interface to Tk's 'fileevent' mechanism
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9 my $fh = Tk::IO->new(-linecommand => callback, -childcommand => callback);
10 $fh->exec("command")
11 $fh->wait
12 $fh->kill
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15 INTERFACES TO THIS MODULE MAY CHANGE AS PERL'S IO EVOLVES AND WITH PORT
16 OF TK4.1
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19 Tk::IO is now layered on perl's IO::Handle class. Interfaces have
20 changed, and are still evolving.
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22 In theory C methods which enable non-blocking IO as in earlier Tk-b*
23 release(s) are still there. I have not changed them to use perl's
24 additional Configure information, or tested them much.
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26 Assumption is that exec is used to fork a child process and a callback
27 is called each time a complete line arrives up the implied pipe.
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29 "line" should probably be defined in terms of perl's input record
30 separator but is not yet.
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32 The -childcommand callback is called when end-of-file occurs.
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34 $fh->wait can be used to wait for child process while processing other
35 Tk events.
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37 $fh->kill can be used to send signal to child process.
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40 Still not finished. Idea is to use "exec" to emulate "system" in a
41 non-blocking manner.
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45perl v5.36.0 2022-07-22 IO(3)