Top level widgets shown while moving dockwidgets

[harregui]

Hi all,
I wonder how I can show 4 static widgets (arrows) that are top level in the MainWindow, while I'm moving QDockWidgets.

I've tried Qt::Popup flag, but that makes the last added widget to receive all the events and I miss the correct dockwidget movement. I can make myCustomControl to work (it shows information about dockPositions), but the default movement of the dockwidget drag doesn't work.

Any idea? Should I use another flag, or how to send the events to my MainWindow? This is my eventFilter (it works when widgets don't use the Qt::Popup flag):

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
	if(obj->inherits("QDockWidget"))
	{
		if(event->type() == QEvent::Paint)
		{
			return QMainWindow::eventFilter(obj, event);
		}
 
		qDebug() << "QDockWidget event received";
		QDockWidget *dockwidget = static_cast<QDockWidget*>(obj);
		dockwidget->setAllowedAreas(Qt::NoDockWidgetArea); /*This avoids drawing the blue target gap*/
 
		if (event->type() == QEvent::MouseButtonPress)
		{   
			qDebug () << "Mouse Button Press in dockwidget received";
			mousePressed = true;
			dockDragging = dockwidget;
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
			dragStartPosition = mouseEvent->pos();
			return QMainWindow::eventFilter(obj, event); 
		}
		if (event->type() == QEvent::MouseMove)
		{
			qDebug () << "Mouse Move in dockwidget received";
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
			if(mousePressed && (mouseEvent->pos() - dragStartPosition).manhattanLength() > QApplication::startDragDistance())
			{
				trackDockWidgetsPositions(Qt::AllDockWidgetAreas);
				if(arrows->areHidden())
				{
					showMainArrows();
					qDebug () << "Arrows shown" ;
				}
				myCustomControl();
			}
 
                         return QMainWindow::eventFilter(obj, event);
	        }
	        if (event->type() == QEvent::MouseButtonRelease)
	        {
		        qDebug () << "Mouse Button Release in dockwidget received";
		        hideMainArrows();
		        mousePressed = false;
		        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
		        positionControl(mouseEvent->globalPos(), dockwidget);
		        if(dockwidget->isHidden())
		        {
			      dockwidget->show();
		        }
		        return QMainWindow::eventFilter(obj, event);
	        }
 
        }
 
        if(obj->inherits("ControlArrow"))
        {
		qDebug() << "event" << event->type();
		if(event->type() == QEvent::Paint)
		{
			return QMainWindow::eventFilter(obj, event);
		}
		else if(event->type() == QEvent::MouseMove || event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonRelease)
		{
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
			return DragDropControl::eventFilter(dockDragging, event);
		}			
	}
	return QMainWindow::eventFilter(obj, event);
}

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
	if(obj->inherits("QDockWidget"))
	{
		if(event->type() == QEvent::Paint)
		{
			return QMainWindow::eventFilter(obj, event);
		}

		qDebug() << "QDockWidget event received";
		QDockWidget *dockwidget = static_cast<QDockWidget*>(obj);
		dockwidget->setAllowedAreas(Qt::NoDockWidgetArea); /*This avoids drawing the blue target gap*/
	
		if (event->type() == QEvent::MouseButtonPress)
		{   
			qDebug () << "Mouse Button Press in dockwidget received";
			mousePressed = true;
			dockDragging = dockwidget;
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
			dragStartPosition = mouseEvent->pos();
			return QMainWindow::eventFilter(obj, event); 
		}
		if (event->type() == QEvent::MouseMove)
		{
			qDebug () << "Mouse Move in dockwidget received";
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
			if(mousePressed && (mouseEvent->pos() - dragStartPosition).manhattanLength() > QApplication::startDragDistance())
			{
				trackDockWidgetsPositions(Qt::AllDockWidgetAreas);
				if(arrows->areHidden())
				{
					showMainArrows();
					qDebug () << "Arrows shown" ;
				}
				myCustomControl();
			}
			
                         return QMainWindow::eventFilter(obj, event);
	        }
	        if (event->type() == QEvent::MouseButtonRelease)
	        {
		        qDebug () << "Mouse Button Release in dockwidget received";
		        hideMainArrows();
		        mousePressed = false;
		        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); 
		        positionControl(mouseEvent->globalPos(), dockwidget);
		        if(dockwidget->isHidden())
		        {
			      dockwidget->show();
		        }
		        return QMainWindow::eventFilter(obj, event);
	        }

        }

        if(obj->inherits("ControlArrow"))
        {
		qDebug() << "event" << event->type();
		if(event->type() == QEvent::Paint)
		{
			return QMainWindow::eventFilter(obj, event);
		}
		else if(event->type() == QEvent::MouseMove || event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonRelease)
		{
			QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
			return DragDropControl::eventFilter(dockDragging, event);
		}			
	}
	return QMainWindow::eventFilter(obj, event);
}

To copy to clipboard, switch view to plain text mode 

[harregui]

Qt::ToolTip