Add new item in ListView through С++ code

[Trikrista]

I want to add now Item in ListView through С++ code, with a check for originality.

I do it like this:
But code do not add new item, and change old item. (it see in debugger).
What have I done wrong?

[Monomix]

A couple of things:

• You should probably derive your DataList class from QAbstractListModel rather than QObject - it's made to do what you want here
• When adding items to your DataList, make sure to call beginInsertRows before and endInsertRows after.

[Trikrista]

Thanks.
QAbstractLIstModel helped

But I still unclear why my code doesn't work

[luca]

I used this in my code:

bool ImageModel::addImage(QString id, QString description, int duration_secs)
{

    beginInsertRows(QModelIndex(), m_imageList.count(), m_imageList.count());
    StructImage struct_image;
    m_imageList << struct_image;
    endInsertRows();
    return true;
}

hope it helps!