I have seen that problem before: http://stackoverflow.com/q/36412671/1421332
Unfortunately no answer there too. > I'm not sure what are you talking about. But what about > beginInsertRows() and endInsertRows()? Between this methods you should > add new data, and this data can has child rows. > > What is the problem? > > On 04.08.2016 19:48, Sébastien Le Ray wrote: > > Hi list, > > > > I'm currently designing an application which presents its data in a > > tree. I have a QAbstractItemModel making a bridge between these data > > and the view, so far so good. > > > > However I'm stuck when it comes to react to underlying data structure > > changes, specifically when rows are added and removed. Model has to > > react before and after the row is added, however, the only information > > it gets is "row added" signal. Worse, adding a row can add the row and > > some subitems (some objects creates mandatory children). > > > > What is the proper way to deal with this? Should I have some kind of > > proxy between the data and the mode? > > > > Regards -- Regards
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