QTreeWidgetItem 点击可编辑修改

QTreeWidgetItem* item = new QTreeWidgetItem(tree);
// need to add editable flag, items are not editable by default
item->setFlags(item->flags() ¦ Qt::ItemIsEditable);
tree->editItem(item, 0);

不可修改

item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);

Constant	Value	Description
Qt::NoItemFlags	0	It does not have any properties set.
Qt::ItemIsSelectable	1	It can be selected.
Qt::ItemIsEditable	2	It can be edited.
Qt::ItemIsDragEnabled	4	It can be dragged.
Qt::ItemIsDropEnabled	8	It can be used as a drop target.
Qt::ItemIsUserCheckable	16	It can be checked or unchecked by the user.
Qt::ItemIsEnabled	32	The user can interact with the item.
Qt::ItemIsTristate	64	The item is checkable with three separate states.

注意：逻辑关系