Send QVariantList and QVariantMap to JavaScript Array and Object

beh_zad

I have not worked ever with this code, and when i did search I couldn't find good things, is there any way to do that with previous view type?

beh_zad

thank for replying me again, I have done with this view type and get this error again.
bq. error: no matching function for call to 'QMetaObject::invokeMethod(QGraphicsObject*, const char [11], QArgument<QVariant>, QArgument<QVariant>)'
Q_ARG(QVariant, QVariant::fromValue(map)));
^

p3c0

Hi,

bq. “error: no matching function for call to ‘QMetaObject::invokeMethod(QQuickItem*, const char [11], QArgument<QVariant>, QArgument<QVariant>)’ Q_ARG(QVariant, QVariant::fromValue(map)));

@
Item {
function readValues(anArray, anObject) {
for (var i=0; i<anArray.length; i++)
console.log("Array item:", anArray[i])
for (var prop in anObject) {
console.log("Object item:", prop, "=", anObject[prop])
}
}
}
@

Does your Item element have a parent ? In other words, is the Item element inside another Component ?

beh_zad

No, it isn't inside the another Component

p3c0

Ok. Then include this in main.cpp
@
#include <QtQuick>
@

beh_zad

Thanks for replying, but the error occurred again.

p3c0

Are you still using QQuickView ? Why is there QGraphicsObject in error ?

bq. QMetaObject::invokeMethod(QGraphicsObject*, const char [11], QArgument<QVariant>, QArgument<QVariant>)’ Q_ARG(QVariant, QVariant::fromValue(map)));

beh_zad

the whole codes is :

in main.cpp

#include <QtCore>
#include <QtDeclarative>

@int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

QDeclarativeView view(QUrl::fromLocalFile&#40;"qrc:///main.qml"&#41;);

QVariantList list;
list << 10 << QColor(Qt::green) << "bottles";

QVariantMap map;
map.insert("language", "QML");
map.insert("released", QDate(2010, 9, 21));

QMetaObject::invokeMethod( view.rootObject(), "readValues",
                          Q_ARG(QVariant, QVariant::fromValue(list)),
                          Q_ARG(QVariant, QVariant::fromValue(map)));

view.setSource(QUrl::fromLocalFile&#40;"qrc:///main.qml"&#41;);
view.show();

return app.exec();

}@

in main.qml

@import QtQuick 2.2
import QtQuick.Window 2.1

Item {
function readValues(anArray, anObject) {
for (var i=0; i<anArray.length; i++)
console.log("Array item:", anArray[i])

    for (var prop in anObject) {
        console.log("Object item:", prop, "=", anObject[prop])
    }
}

}@

p3c0

@
QDeclarativeView view(QUrl::fromLocalFile("qrc:///main.qml"));
@

Don't use QDeclarativeView; use QQuickView instead.

Your earlier code was correct:
@
#include <QGuiApplication>
#include <QtQuick>

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

QQuickView view(QUrl::fromLocalFile&#40;"main.qml"&#41;);
 
QVariantList list;
list << 10 << QColor(Qt::green) << "bottles";
 
QVariantMap map;
map.insert("language", "QML");
map.insert("released", QDate(2010, 9, 21));
 
QMetaObject::invokeMethod(view.rootObject(), "readValues",
        Q_ARG(QVariant, QVariant::fromValue(list)),
        Q_ARG(QVariant, QVariant::fromValue(map)));
 
view.show();
return app.exec();

}
@

Try with this code again and check.

beh_zad

but this code show this error:
error: no matching function for call to 'QMetaObject::invokeMethod(QQuickItem*, const char [11], QArgument<QVariant>, QArgument<QVariant>)'
Q_ARG(QVariant, QVariant::fromValue(map)));

I tried it again but this error is displayed

p3c0

Strange.. It works perfectly for me. Which Qt version and OS are you using ?

beh_zad

It's storage for me too, Qt Creater 3.1.1 based on Qt 5.2.1

p3c0

Can you RightClick on QMetaObject > Refactor > Add #Includes ... (any or all which it mentions) ?

beh_zad

I had done it at least, it needs to include <QQuickItem>, thanks for everybody to replying my question.

p3c0

Good... Happy Coding :)