[SOLVED] QTreeView mark item as expandable

[Galbarad]

Hi everybody
I have problem with by treemodel. I have item without child in my tree but I want see it with plus [+]
because I want to feel it after user click I am implement method canFetchMore that always return true, but it's not help

thank you for help

[Galbarad]

implementation of method
@bool hasChildren(const QModelIndex &parent);@
do not help too

[Galbarad]

Tree item class should override method childCount

@int QDBTreeItem::childCount() const {
return Opened ? childItems.count() : 1;
}@