Re: Help me understand inheritance please!

If you are looking to group Tk widgets together, you want to consider Tk mega-widgets. You can make new widgets by deriving from an existing widget, or by composition. I refer you to Steve Lidie's excellent book Mastering Perl/TK

This is a somewhat different approach from the standard @ISA type inheritance that is Perl OO

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I'm Not Just Another Perl Hacker

Comment on Re: Help me understand inheritance please!

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Re^2: Help me understand inheritance please! by jdtoronto (Prior) on Nov 04, 2004 at 19:34 UTC
Thanks rinceWind, Another interesting suggestion. By your method I could take my BrowseEntry, wrap it up in a MegaWidget with the code for its associated events (listcmd and browsecmd in this case) and then use it wherever that functionality is needed. That would work, and as I think about it I could pass a coderef into the megawidget for another method that needs to be run whenever a value is selected from the drop-down. My copy of Steve Lidie's Mastering Perl/Tk is right beside me and is falling apaprt in some places! Almost time to go and buy another. jdtoronto	[reply]

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Re^2: Help me understand inheritance please!
by jdtoronto (Prior) on Nov 04, 2004 at 19:34 UTC

rinceWind

Another interesting suggestion. By your method I could take my BrowseEntry, wrap it up in a MegaWidget with the code for its associated events (listcmd and browsecmd in this case) and then use it wherever that functionality is needed. That would work, and as I think about it I could pass a coderef into the megawidget for another method that needs to be run whenever a value is selected from the drop-down.

My copy of Steve Lidie's Mastering Perl/Tk is right beside me and is falling apaprt in some places! Almost time to go and buy another.

jdtoronto

[reply]