how to notify qml that the c++model changed

[Mr A]

Hi everyone:
i'm a new Qtor who want to use in Android .
i use a qml ListView with a c++ model.
but when i delete the item in the model,the list view do not delete the item.
who can help me?thx!

my english is so so, sorry

[anda_skoa]

Is this a custom model

Does the model correctly emit the signals for row removal?

I.e. have you verified in C++ that rowsAboutToBeRemoved() and rowsRemoved() are correctly emitted when you delete an entry?

Cheers,
_

[Mr A]

thank you for your reply

i'm use a QAbstractListModel
and now , i knew that , QAbstractListModel didnot emit dataChanged() auto
but, i do not know how to use the dataChanged signal

i ll google it,but now , i have no idea
do you have any document?

thank u very much!

[anda_skoa]

dataChanged() is about existing cell data changing. There are different signals for removal of rows.

How do you handle removing of an entry?

Cheers,
_

[Mr A]

Yes

now i have found it

i have no idea

i'm searching the answer now but have no result

[anda_skoa]

Yes

Yes is not an answer to a question starting with "how".
Unless you are a Vorlon, of course.

now i have found it

Found what?

i have no idea

No idea where to find your code that handle removal of entries?

i'm searching the answer now but have no result

You must trigger the item deletion somewhere, that is a good place to start searching.

Cheers,
_

[Mr A]

i failed to do it.......

[wysota]

Yes is not an answer to a question starting with "how".
Unless you are a Vorlon, of course.

That made my day today

i failed to do it.......

How did you implement removeRows() for your model?