Question

i have treeView based on QAbstractItemModel, but now i don’t know how to set multiple selection in my model

Answer 1

I assume you are going to want to do this programmatically?

Firstly, selections are not controlled by the model, but by the view. This is because a model can be connected to multiple views, each of which can have a different selection (the views are independent, except for the data they show from the model).

Ayway, you will want to get the “selection Model” from the treeview

selection_model = treeview.selectionModel()

And then you can call

selection_model.select(model_index,QItemSelectionModel.SelectCurrent)

repeatedly to select what ever items you like, based on the model_index specified (you can find the index of a row for a QStandardItem() by calling indexFromItem(item) on the data model (not the selection model).

Anyway, I suggest you look up the documentation for treeview selectionModels as this will help you further (can’t really help much more without more information than a single line question!)