Le 05/08/2016 à 17:47, j...@wavemetrics.com a écrit :
When you say "packaging", you mean that you have a wrapper around the underlying data
(something like a TreeItem class that "caches" data)
I mean preparing the presentation of the data.
Which mean? :D
Main issue is not on adding rows (this you can indeed call begin while data is
already added), issue is on removal since beginRemoveRows needs to access to
the to-be-removed row, which is an issue if row has already been removed
Why does removing a row require access to the (now gone) data?
Don't know, just experienced it, TreeView performs some kind of size
computation on the to-be-removed-row-which-is-in-fact-already-removed
and all blow up
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