I'm working on a Perl/Tk GUI application that displays data coming from another Perl program. The GUI consists of many gKrellM-style graphs and status bar indicators. I'd like to update the graphs as new information comes in (in this case, constantly) without freezing the GUI. So I need some way to trigger Tk events as new information comes from the pipe. I was going to use Tk file events, but apparently these do not work under Windows (the target platform in this case). Is this true and if so, what are my alternatives?