Sorting a QListWidget using sortItems()

qt sorting qlistwidget
Kazuma picture Kazuma · Dec 13, 2011 · Viewed 9.2k times · Source

I have issues while using sortItems() on a QListWidget. Here is what happens:

Changes this:

A z d C E o I

to this:

A C I d e o z

But i want it to be:

A C d e I o z

Any way to change to make it sort like that?

Answer

Frank Osterfeld picture Frank Osterfeld · Dec 13, 2011

QListWidget uses the DisplayRole (the item's text) for sorting and calls QString::localeAwareCompare on them. To override the default, you can either change the locale used (see QLocale) or have your own QListWidgetItem subclass reimplementing QListWidgetItem::operator< and let it do the comparison you want.

For anything more advanced, I'd suggest to have a look at QListView, which you could combine either with your own model implementation or the convenience models QStandardItemModel or QStringListModel (the latter could be the most simple and elegant solution in your case). For sorting, you would then put a QSortFilterProxyModel in between the actual model and the view.

Related questions

How to sort QList<QVariant> in Qt?

I have the following datastructure. QList<QVariant> fieldsList How can I sort this list? This list contains strings. I want to sort the fieldList alphabetically?

Read More
How to automatically sort a QTreeWidget column?

I'm using a QTreeWidget to display some simple items. I've set the list sortable by .setSortingEnabled(true) calling. In this way, the list is sorted only when the user press the title column, and not automatically whenever new item is …

Read More
How to use qSort with custom types in QList?

I have a problem with sorting a QList containing instances of a struct: class modelHeuristic { typedef struct { QString c; QString t; double value; }Saving; public: QList<Saving> list_saving; #include "klarkeright.h" klarkeRight::klarkeRight() { } void klarkeRight::Algoritmo_Asimetrico(…

Read More