If deriving a class from
TreeNode[
^] isn't possible for some reason - and I've not tried it but I'd have thought it was fairly easy but I could be missing something - then the simplest way to do it is to use the
Tag property that every Control derived class has.
Tag is a Object that is free for your use, and which can contain an instance of any class - so create a class which contains the properties you need as a stand-alone class, create an instance of it, fill out the details, and assign a fresh instance to each
TreeNode.Tag.
Then when you want to paint it, cast current
TreeNode.Tag back to your properties class, and you have access to the info you need without having to derive a new class from TreeNode.
But derivation is normally a better approach - what problems did it give you?
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