QListview in Qt

shivaligupta · 01-13-2005, 05:53 AM

I want that as the user enters a record it should be appended at the end
where as right now i have turned the sorting off by using setSorting() & it is adding the record at the beginning & if i set sorting on then 1,2,3,4,5,6,7,8,9,10 are sorted as 1,10,2,3,4... means that it interprets them as characters. I want to sort them as integers.

Thanks in advance

Mara · 01-13-2005, 03:19 PM

You need to overload QListViewItem::compare method. It means you need to add a new class for list elements with parent QListViewItem and write your version of the compare function.

From Qt Assistant:

Quote:

int QListViewItem::compare ( QListViewItem * i, int col, bool ascending ) const [virtual]
Compares this list view item to i using the column col in ascending order. Returns -1 if this item is less than i, 0 if they are equal and 1 if this item is greater than i.
This function is used for sorting.
The default implementation compares the item keys (key()) using QString::localeAwareCompare(). A reimplementation can use different values and a different comparison function. Here is a reimplementation that uses plain Unicode comparison:

Code:

    int MyListViewItem::compare( QListViewItem *i, int col,
                                 bool ascending ) const
    {
        return key( col, ascending ).compare( i->key( col, ascending) );
    }

We don't recommend using ascending so your code can safely ignore it.