Drag and drop between different QMdiSubwindows

MasterBLB

Hey Qt Devs

I need a hint how to raise an inactive QMdiSubwindow when I put mouse over it, while I have pending drag operation initiated from other subwindow. So far as I tested dragEnterEvent(), enterEvent() and so on don't work due to other window is inactive. What else I can use to detect drag went over another subwindow?

MasterBLB

I managed to solve this on my own. I share the solution in case of someone will also occur such issue.
Reimplementing dragEnterEvent() is necessary, and here is how:

void AComplexWidgetPutIntoMdiSubwindowWhoseChildStartsDragNDrop::dragEnterEvent(QDragEnterEvent *event)
{
    if (event->mimeData()->hasFormat(supportedMimeFormat))//supported mime is something you define
    {
        QMdiSubWindow *w = qobject_cast<QMdiSubWindow*>(parent());//this gets QMdiSubwindow for the widget
        QMdiArea *area = w->mdiArea();

        area->setActiveSubWindow(w);//and this causes it to be raised as top, active window
    }
    QWidget::dragEnterEvent(event);
}