Qt Treewidget对顶级项目进行排序

Question

I am having a difficult time overloading QTreeWidgetItem 's < operator.

I have a list of QTreeWidgetItems , some top-level items and some children. When the user activates the "date created" column to sort the tree, the sort occurs at the child level.

In other words, imagine a tree like this:

Item A - latest modification 9/24/12
  3rd Modified -             9/21/12
  2nd Modified -             9/15/12
  1st Modified -             9/10/12

Item B - latest modification 9/23/12
  2nd Modified -             9/23/12
  1st Modified -             9/22/12

When the date column is activated to sort ascending, I would expect the return result to be: Item A, then Item B... but instead, the sort occurs on the 1st modified date of the item. I am returned with Item B then Item A. Even though none of the top-level items are expanded, or active.

Answer 1

If you use a QWidgetTree to dispay your QTreeWidgetItems list : You can add your 2 firsts level item (item A and B), sort your QwidgetTree and then add your low level items. so your tree will be sorted by latest modification