QTreeWidget set invisible root node?

[norobro]

Not sure that I understand what you are trying to achieve, but I think to get anything to show up in your treeWidget you to need to either reparent the items or copy them.

Reparent:

void showItems(A* a){
    Item* top = a->root();
    while (top->childCount() > 0){
        Item *child = top->takeChild(0);
        addTopLevelItem(child);
    }
}

void showItems(A* a){
    Item* top = a->root();
    while (top->childCount() > 0){
        Item *child = top->takeChild(0);
        addTopLevelItem(child);
    }
}

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Copy:

void showItems(A* a){
    Item* top = a->root();
    for(int i=0;i<top->childCount();++i) {
       Item *child = new Item(*top->child(i));
       addTopLevelItem(child);
    }
}

void showItems(A* a){
    Item* top = a->root();
    for(int i=0;i<top->childCount();++i) {
       Item *child = new Item(*top->child(i));
       addTopLevelItem(child);
    }
}

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