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Developer
Posts: 64
Registered: ‎09-10-2009
My Device: Z10, Bold 9700
My Carrier: O2 Germany
Accepted Solution

How to pass a Container created in QML to a C++ method

I have defined a Container in QML:

attachedObjects: [
        ComponentDefinition {
            id: entryContainerDefinition
            Container {
                ...
            }
        }
]

 

Then I create the Container in QML and call a C++ utility method, which should dynamically add context menu actions based on some other parameters:

var entryContainer = entryContainerDefinition.createObject(this);
dsUtil.addActionsToContainer(entryContainer, [other params...]);

 

But when I execute it, I only get the following error:

"BoxContainer.qml:45: Error: Unknown method parameter type: Container*"

 

Is it not possible to create a Container in QML and then pass it to C++ in order to modify it dynamically?

----

My Twitter: @hendrik_dev
Developer
Posts: 64
Registered: ‎09-10-2009
My Device: Z10, Bold 9700
My Carrier: O2 Germany

Re: How to pass a Container created in QML to a C++ method

I found a working solution myself. I am now passing QObject* instead of Container*:

void dsUtil::addActionsToContainer(QObject* containerObject, [...]) {
    // Cast QObject to Button
    Container* container = dynamic_cast<Container *>(containerObject);

    if (container) {
        ...
    }
}

 

----

My Twitter: @hendrik_dev
Developer
Posts: 67
Registered: ‎09-01-2012
My Device: Dev Alpha
My Carrier: Bell

Re: How to pass a Container created in QML to a C++ method

I haven't done it with a container before but for other objects, I've given them an ObjectName: property and then I pass that back to my C++.