Qt-interest Archive, March 2007
Sorting in Tree Widget
Message 1 in thread
I am having trouble sorting a TreeWidget in Qt 4.2.1, Windows XP. My
Tree Widget is pretty simple, all TopLevel items, and all numerical data
(no text). The first column is an integer, and i want to sort by that.
Everything I've tried gives me ASCII sorting, not numerical.
I have read previous threads about sorting, so this is how I add items
to the tree:
int rnr=getRunNr();
lvitem= new QTreeWidgetItem(moduleRsltList);
lvitem->setData(0,Qt::DisplayRole,rnr); // or: setText(0,rnr_str);
// data[] is an array of double
for (i=1;i<=ct;i++)
lvitem->setText(i,QString::number(data[i-1],'f',6));
moduleRsltList->sortItems(0,Qt::AscendingOrder);
What is wrong here? When I have a list of items with column 0 having
values of 5,6,7,8,9,10,11,12,13
the sorting gives me 10,11,12,13,5,6,7,8,9 in ascending, backwards of
that in descending.
What am i doing wrong? Or do i have to subclass the QTreeWidgetItem to
get this relatively simple behavior?
--
[ signature omitted ]
Message 2 in thread
Hi,
> I am having trouble sorting a TreeWidget in Qt 4.2.1, Windows XP. My
> Tree Widget is pretty simple, all TopLevel items, and all numerical data
> (no text). The first column is an integer, and i want to sort by that.
> Everything I've tried gives me ASCII sorting, not numerical.
I think this should help:
Model/View Programming | Sorting
http://doc.trolltech.com/4.2/model-view-programming.html#sorting
--
[ signature omitted ]
