Thursday 01 March 2007 11:06, Robert Hogan wrote:
Can someone tell me if I'm on a hiding to nothing here?

I have a listview that is non-hierarchical. At the instance of the user I
want to reorganize this view and group items together with a common
characteristic in a two-deep hierarchy.

I don't want to clear and reload the view from the data source - though
will do if below is known to be fruitless.

So I thought I could just copy the listview, iterate through each item and
takeItem() insertItem() my way down the list, then replace the listview
with the new one.

However it seems:

- I can't make a copy of qlistview - the compiler tells me the operator is
private. And I can't use a qvaluelist, because it will only accept the
pointer to the listviewitems rather than a copy of the items themselves.

- So I have to reorganizse the listview in place. I am trying:

QListViewItem *;
QListViewItem *tm;

for (QListViewItem *child = m_view->serverList->firstChild(); child;
child = ) {
= child->nextSibling();

QRegExp rx("^[0-9]{1,3}\\.[0-9]{1,3}\\.");
rx.search(child->text(5));
QString tmp = rx.cap(0);
if (tmp.isEmpty()){
break;
}

if (!( tm = m_view->serverList->findItem((tmp),0))){
tm = new QListViewItem(m_view->serverList, tmp);
}

m_view->serverList->takeItem(child);
tm->insertItem(child);
}
--
Apart from taking ages to finish, the above also does not insert the
existing items as children of their new parents - the above takes place on
a completely flat listview.

Can anyone point me in the direction of how rejig a list like this in
place? I'm assuming I must be going about it completely the wrong way.

Qt3 or Qt4?

In Qt4, you can use the model-view architecture, and just change the model (I
think). That's just the sort of thing that the model-view architecture is
there for. I don't know how you could do it in Qt3, though.

Branan

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