[Interest] Send Data to JavaScript

Jérôme Godbout godboutj at amotus.ca
Mon Apr 12 20:48:40 CEST 2021

Have you tried with a QVariantMap for your Q_PROPERTY instead? Will be dull to convert from QVAriant to list and string for each values, but will probably work.

Jérôme Godbout, B. Ing.

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From: Interest <interest-bounces at qt-project.org> on behalf of John Schneiderman <jschneiderman at gog.com>
Date: Monday, April 12, 2021 at 9:17 AM
To: qt qt <interest at qt-project.org>
Subject: [Interest] Send Data to JavaScript
I'm attempting to send data to the JavaScript side of the QWebEngine
code. This data is being emitted via a signal. The registration is
connected correctly as other components work just fine, though they're
emitting only a single int or QString.

An example of what I'm attempting is below:

class Demo : QObject




             QMap<QString, QStringList> mappings
                 MEMBER mappings_
                 NOTIFY mappingsChanged


What I'm expecting is that mappings would be transformed on the
JavaScript side as:

mappings {

     "key" : ["abc", "def"]...


However, when I try to view the data in the emitted signal it's always
null. Any suggestions where I should look for more answers or perhaps
I'm going in an incorrect direction?


John Schneiderman
Senior Software Engineer
CDPR Squad
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