[GD-Windows] TreeView label editing

[Pierre T. <pte...@ag...>]

Ok, I have another treeview question, about label editing. So I'm trying to
let the user change the label of a treeview item by double-clicking on it.
My problem is that no edit box ever shows up, even though I receive the
expected messages.

So it's like this:

- the treeview is created with TVS_EDITLABELS
- when user double-click on an item I call TreeView_EditLabel
- then I correctly receive the TVN_BEGINLABELEDIT and TVN_ENDLABELEDIT. In
the first one I can catch the edit control handle using
TreeView_GetEditControl, which returns a valid handle.

Yet no edition ever happens. I receive the TVN_ENDLABELEDIT notification
immediately after the TVN_BEGINLABELEDIT one, and the text in the associated
structure is null.

What did I miss? I browsed the net in vain. I can't find a single example
clearly showing me how to do that. The MSDN didn't help much either.

Thanks,
- Pierre