Posted by Frank Hale on 1999-11-20
> PS...Is this a Tk thing?? Yes its a Tk thang! Description of the problem: Okay this is what I am doing. I've already written some little Perl/Tk apps to grab headlines from various websites on the internet. They all have a common interface. The only major difference between each app is the method which parses the headlines and adds them to the list box. I've created a module which has the core GUI stuff in it for the creation of these apps. Now when I declare an object I want to define its parse_headlines method so that it can download the headlines from an arbitrary site. What I am aiming to do is make it simple to create such little apps by encapsulating the GUI inside a module and only having to write just a little more code to create new headline grabber apps. I am not sure if virtual functions is what I am looking for, probably more along the lines of a callback because the way the module is coded now it calls a method parse_headlines() which is an empty method. It will only be defined when I create a new object of this class. __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com
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