Typically for a long procedural sequence in Tk, I farm the procedural step out to a subroutine, usually with a go button. The subroutine can then loop through all the steps I want done without the need to return to the GUI event model. The GUI can be updated periodically from the subroutine (pass mainwindow in to the subroutine as a parameter) in a couple of different ways.

If shelling out to command line, I often just capture the output with qx or backticks and post that capture back to the mainwindow. This has the drawback that the GUI will not be updated until the command completes. This hasn't been a problem for me since most of my GUI apps also involve counters of some kind. Updating those prevents the user from wondering if the screen has frozen.

If you want to pipe the output of tar to a textbox, you could map STDIN to the text box. I haven't done this yet, just read about it (Mastering Perl/Tk I think) but I keep looking for a chance to use it.

In reply to Re: Perl::Tk - Event sequencing question by periapt
in thread Perl::Tk - Event sequencing question by crabbdean

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