[Interest] Signals with QByteArray do not work in QML?
Artem Sidyakin
artem.sidyakin at qt.io
Fri Oct 12 11:33:30 CEST 2018
Worked fine for me:
signals:
void someThing(QByteArray smthing);
emit someThing("christina hendricks");
...
#include "backend.h"
qmlRegisterType<Backend>("io.qt.Backend", 1, 0, "Backend");
...
import io.qt.Backend 1.0
Backend { id: backend }
Connections {
target: backend
onSomeThing: {
console.log(smthing); // outputs "qml: christina hendricks"
}
}
Also looks like you missed “s” in your “Connection”.
---
Artem Sidyakin
> On 11 Oct 2018, at 16:27, Jason H <jhihn at gmx.com> wrote:
>
> So originally, QByteArray was not supported in QML. Then this happened in 5.8: http://doc.qt.io/qt-5/qtqml-cppintegration-data.html#qbytearray-to-javascript-arraybuffer
>
> So naturally I tried to emit newData(QByteArray data), but this was not caught by my connections:
>
> Connection {
> target: shim
> onNewData: {
> console.log(data)
> }
> }
>
> I then tested this with having my slot handleNewData(QByteArray data) emit an additional signal hasNewData(bool), added it to the connections, and I was able to get it to work.
>
> Is this a bug or am I trying to do eomething known to be wrong?
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