Issue connecting QListWidget.indexes_moved signal to slot

[jlgerber]

I have a QListWidget that I am looking to connect a signal from (the signal appears in the docs as coming from QListView via Deref). I implement a SlotOfQListOfQModelIndex and attempt to connect them like so:

withpackage_ptr
                .indexes_moved()
                .connect(&form.withpackage_moved);

This compiles fine, but when launching the application, I get this error:

QObject::connect: No such signal QListWidget::indexesMoved(const QList< QModelIndex >&)
QObject::connect:  (sender name:   'WithsListWidget')

That definitely looks like the right C++ signature to me....

Update

I tried implementing this using the qlistview and the QStandardItemModel. I ran into the same issue.

My slot is defined like so:

SlotOfQListOfQModelIndex::new(
                    move |indexlist: Ref<QListOfQModelIndex>| {
                        println!("ohboy");
                    },

is it an issue with my slot? I suspect there is a signature mismatch between the signal which is a const pointer and the slot, which is a const reference...

NB I also tried this with a RawSlotOfQListOFQModelIndex ....

Or...

The signal is not defined correctly in the library. in QT, the signature of the method is :

void QListView::indexesMoved(const QModelIndexList &indexes)

but in rust-qt it is:

pub fn indexes_moved(&self) -> Signal<(*const QListOfQModelIndex,)>

shouldnt that be

pub fn indexes_moved(&self) -> Signal<(const QListOfQModelIndex&,)>

[Riateche]

The issue is caused by the fact that these slots are declared using QModelIndexList which is a typedef for QList<QModelIndex>. ritual resolves and discards all typedefs, so it doesn't have information about QModelIndexList, but Qt for some reason doesn't want to recognize QList<QModelIndex> as a valid alias for QModelIndexList (although it's able to recognize some other type alises).

I've made a hacky fix of this issue (it simply replaces QList<QModelIndex> with QModelIndexList in all receiver IDs). I'll also need to create a way to test for successful connection so I can at least write a test for this hack. I hope there are no slots that use QList<QModelIndex> as their argument because that would make the issue much harder to fix.

I'll post here once the fix is published.

[jlgerber]

Thanks a bunch. This will make it possible to recognize drag and drop reordering.

[Riateche]

Fixed in qt_widgets 0.5.0-alpha.1.