Removing row from QAbstractItemModel

Valerian

Hi all,

I'm using QML treeview with model sub-classed from QAbstractItemModel.
I'm facing this issue that model indexes aren't updated when user removes a row.

Here's the code

    bool TreeModel::removeRows(int row, int count, const QModelIndex &parent)
    {
    	TreeItem *parentItem = getItem(parent);
     
    if(parentItem == null) return false;
     
    	bool success = false;
     
    	if (count > 0)
    	{
    		beginRemoveRows(parent, row, row + count - 1);
    		success = parentItem->removeChildren(row, count);
    		endRemoveRows();
    	}
     
    	return success;
    }
     
    bool TreeItem::removeChildren(int position, int count)
    {
    	if (position < 0 || position + count > children_.size())
    		return false;
     
    	for (int row = 0; row < count; ++row)
    		delete children_.takeAt(position);
     
    	return true;
    }

Could you point what am I missing?

Brembo Breidscheid

Hi,

I have exactly the same issue. The ony way I could solve it is to call beginResetModel and endResetModel after I deleted the rows.

It seems to me like a bug in the TreeView / ItemDelegate implementation because this works using a C++ QTreeView.