Help needed in creating Tree Model.

[kaushal_gaurav]

No i do not want to copy data nor to modify data.
I just need it for display in list view...
The new model should have three columns but the orignal model has 10 columns but i just need data from the three columns and that too in a tree from.

item1 ----|
-----------|----SubItem1----|---SubSubItem1
-----------|-------------------|---SubSubItem2
-----------|
-----------|----SubItem2
-----------|----SubItem3
-----------|
item2 ----|
-----------|----SubItem1
-----------|----SubItem2 ----|---SubSubItem1
-----------|--------------------|---SubSubItem2
-----------|----SubItem3
-----------|

[wysota]

You can either implement a proxy model that will reorder items and modify the number of columns and rows or create a new (tree) model with three columns and fill it with data yourself.

Really, showing the same ascii art all the time won't help. Giving us something compilable what we could run and see ourselves would be a much better idea.