My solution was for a winTree with columns in outlook mode. In that mode the winTree works a bit like a grid and a bit like a tree.
If you are using standard mode, then I'm guessing you have no columns and you are looking to have a selection checkbox on the node itself?
There is a property called CheckedState on the node. Never used it, but maybe you can find somethign useful on it in the onlien documentation or just experiment with it a bit…
