Printscreen QML item C++

[MartinD]

Is it possible to grab printscreen of QML item without saving it to file? I don't want to save image to file with myQmlItem.grabToImage(function(result) { result.saveToFile("myImage.png"); }); because I will use the image in underlying C++ code. Of course, I can save image to file, then read it back in C++ but it would be good if I can access the image in C++ directly without storing it and reading back.

[raven-worx]

@MartinD

QML:

myItem.grabToImage( function(result) {
            myObj.processQMLImage(result);
        } );

C++

void processQMLImage(QObject* imageObj)
{
    if( QQuickItemGrabResult* item = qobject_cast<QQuickItemGrabResult*>(imageObj) )
    {
          QImage image = item->image();
          //.....
    }

[p3c0]

@MartinD Or you can just do it directly by calling follwing function from QML:

void capture(QQuickItem *item)
{
    auto grabResult = item->grabToImage(QSize(50,50));

    connect(grabResult.data(), &QQuickItemGrabResult::ready, [=]() {
        QImage image = grabResult.data()->image();
    });
}

[MartinD]

Thanks, very useful!

[huxiyu]

I want grab QML item to save video. eg: mp4
Is there a way to record the layer ?