Getting DragEvent target info

[jpn]

One option would be to handle drag and drop events by installing an event filter on children.

bool Parent::eventFilter(QObject* receiver, QEvent* event)
{
    DraggableLED* led = dynamic_cast<DraggableLED*>(receiver);
    if (!led)
        return false; // not a DraggableLED
 
    switch (event->type())
    {
        case QEvent::DragEnter:
            // do something with led
            break;
        ...
    }
    return false;
}

bool Parent::eventFilter(QObject* receiver, QEvent* event)
{
    DraggableLED* led = dynamic_cast<DraggableLED*>(receiver);
    if (!led)
        return false; // not a DraggableLED

    switch (event->type())
    {
        case QEvent::DragEnter:
            // do something with led
            break;
        ...
    }
    return false;
}

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The difference with reimplementing such event handler of the parent is that by the time event reaches parent it has already been ignored by the child:

void Parent::dragEnterEvent(..)
{
    ...
}

void Parent::dragEnterEvent(..)
{
    ...
}

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[MrGarbage]

Unfortunately the child doesn't have enough info to complete the task. Only the parent
has that. I don't want some kludge like a pointer back to the parent. Seems like there
should be a way to do it.

Can't I somehow get access to the target widget from the coordinates of the
drop point event->pos()?

[jpn]

Unfortunately the child doesn't have enough info to complete the task. Only the parent has that.

That's exactly why I made the "Parent" being an event filter.

[MrGarbage]

I found a solution for this.

QWidget *child = childAt(event->pos());
DraggableLED *target = static_cast<DraggableLED*>(child->parentWidget());

Thanks for your input!