Bug in minimal demo

[jaclas]

I try TreeView demo: Minimal. After compiled I click several times on tree and get except:

This demo works at all bad, it is not possible selection of first visible items.
Is errors relate to the TreeView or just this demo?

I tested on Delphi Berlin 10.1

[sanjayssk]

Problem 2) Selection problem of visible node items.
Solution: This is a problem in demo form. Please change the RootNodeCount of the tree to 0 and run.

Problem 1) Error message. This still comes sometimes and I need to look into it some more. That's why I have not committed the above fix yet.