Unable to get QSvgGenerator to write to a device

[ChrisW67]

You need to finish the painting before trying to read the buffer (or it will not be finished until the painter is destroyed, which is after you read).

QPainter painter( &svgGenerator );
    scene.render( &painter );
    painter.end();

QPainter painter( &svgGenerator );
    scene.render( &painter );
    painter.end();

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