QAbstractItemModel for a highly nested data structure

Ghasem Ramezani

I need a read-only QTreeView model for some highly nested data structures. By nested, I mean something like this:

struct A 
{
 int                      _1;
 std::vector<double>      _2;
 std::vector<std::string> _3;
};
struct B
{
 std::vector<A>   _1;
 std::vector<int> _2;
};
struct C
{
 std::vector<A> _1;
 std::vector<B> _2;
};

Consider having an object per each type and want to visualize it using QTreeView.

A _1;
B _2;
C _3;

MyModel model;
model.setA(&_1);
model.setB(&_2);
model.setC(&_3);

/*
  + A
     ...
  + B
     ...
  + C
     ...
  */

There are more than 50 nested structs. My problem is with those dynamic arrays, and I don't know the efficient way to model them. All I found from examples and LLMs' answers was inefficient in updating the model. They were using beginResetModel() and endResetModel().
The model is read-only and the structures will be updated every 20ms.

SGaist

Hi,

Did you already took a look at the simple tree example ?

As for your refresh rate, people won't be able to follow them so you might want to consider batching these updates.