Hi all.
Is there a way to simulate a pinch gesture on a PinchArea?

I tried to simulate it by sending QTouchEvent events as follows (the given parameter is a pointer to a PinchArea item):
Qt Code: 
  1. void BackendItem1::pinch1(QQuickItem* item)
  2. {
  3.     QList<QTouchEvent::TouchPoint> points1;
  4.     QTouchEvent::TouchPoint p1;
  5.     p1.setPos(QPointF(10, 10));
  6.     p1.setStartPos(QPointF(10, 10));
  7.     p1.setPressure(0.5);
  8.     p1.setId(1);
  9.  
  10.     QTouchEvent::TouchPoint p2;
  11.     p2.setPos(QPointF(310, 310));
  12.     p2.setStartPos(QPointF(310, 310));
  13.     p2.setPressure(0.5);
  14.     p2.setId(2);
  15.  
  16.     points1 << p1 << p2;
  17.  
  18.     QTouchEvent te1(QEvent::TouchBegin, Q_NULLPTR, Qt::NoModifier, Qt::TouchPointPressed, points1);
  19.     QCoreApplication::sendEvent(item, &te1);
  20.  
  21.     p1.setLastPos(p1.pos());
  22.     p2.setLastPos(p2.pos());
  23.     p1.setPos(QPointF(60, 60));
  24.     p2.setPos(QPointF(260, 260));
  25.     points1.clear();
  26.     points1 << p1 << p2;
  27.     QTouchEvent te2(QEvent::TouchUpdate, Q_NULLPTR, Qt::NoModifier, Qt::TouchPointMoved, points1);
  28.     QCoreApplication::sendEvent(item, &te2);
  29.  
  30.     p1.setLastPos(p1.pos());
  31.     p2.setLastPos(p2.pos());
  32.     p1.setPos(QPointF(110, 110));
  33.     p2.setPos(QPointF(210, 210));
  34.     points1.clear();
  35.     points1 << p1 << p2;
  36.     QTouchEvent te3(QEvent::TouchUpdate, Q_NULLPTR, Qt::NoModifier, Qt::TouchPointMoved, points1);
  37.     QCoreApplication::sendEvent(item, &te3);
  38.  
  39.     p1.setLastPos(p1.pos());
  40.     p2.setLastPos(p2.pos());
  41.     p1.setPos(QPointF(110, 110));
  42.     p2.setPos(QPointF(210, 210));
  43.     points1.clear();
  44.     points1 << p1 << p2;
  45.     QTouchEvent te4(QEvent::TouchEnd, Q_NULLPTR, Qt::NoModifier, Qt::TouchPointReleased, points1);
  46.     QCoreApplication::sendEvent(item, &te4);
  47. }
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or (in the second try I tried to create a QTouchDevice instead of sending Q_NULLPTR):
Qt Code: 
  1. void BackendItem1::pinch3(QQuickItem* item)
  2. {
  3.     QTouchDevice td1;
  4.     td1.setMaximumTouchPoints(5);
  5.     td1.setType(QTouchDevice::TouchScreen);
  6.  
  7.     QList<QTouchEvent::TouchPoint> points1;
  8.     QTouchEvent::TouchPoint p1;
  9.     p1.setPos(QPointF(10, 10));
  10.     p1.setStartPos(QPointF(10, 10));
  11.     p1.setPressure(0.5);
  12.     p1.setId(1);
  13.  
  14.     QTouchEvent::TouchPoint p2;
  15.     p2.setPos(QPointF(310, 310));
  16.     p2.setStartPos(QPointF(310, 310));
  17.     p2.setPressure(0.5);
  18.     p2.setId(2);
  19.  
  20.     points1 << p1 << p2;
  21.  
  22.     QTouchEvent te1(QEvent::TouchBegin, &td1, Qt::NoModifier, Qt::TouchPointPressed, points1);
  23.     QCoreApplication::sendEvent(item, &te1);
  24.  
  25.     p1.setLastPos(p1.pos());
  26.     p2.setLastPos(p2.pos());
  27.     p1.setPos(QPointF(60, 60));
  28.     p2.setPos(QPointF(260, 260));
  29.     points1.clear();
  30.     points1 << p1 << p2;
  31.     QTouchEvent te2(QEvent::TouchUpdate, &td1, Qt::NoModifier, Qt::TouchPointMoved, points1);
  32.     QCoreApplication::sendEvent(item, &te2);
  33.  
  34.     p1.setLastPos(p1.pos());
  35.     p2.setLastPos(p2.pos());
  36.     p1.setPos(QPointF(110, 110));
  37.     p2.setPos(QPointF(210, 210));
  38.     points1.clear();
  39.     points1 << p1 << p2;
  40.     QTouchEvent te3(QEvent::TouchUpdate, &td1, Qt::NoModifier, Qt::TouchPointMoved, points1);
  41.     QCoreApplication::sendEvent(item, &te3);
  42.  
  43.     p1.setLastPos(p1.pos());
  44.     p2.setLastPos(p2.pos());
  45.     p1.setPos(QPointF(110, 110));
  46.     p2.setPos(QPointF(210, 210));
  47.     points1.clear();
  48.     points1 << p1 << p2;
  49.     QTouchEvent te4(QEvent::TouchEnd, &td1, Qt::NoModifier, Qt::TouchPointReleased, points1);
  50.     QCoreApplication::sendEvent(item, &te4);
  51. }
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I also tried to do that using a QNativeGestureEvent event as follows:
Qt Code: 
  1. void BackendItem1::pinch2(QQuickItem* item)
  2. {
  3.     QNativeGestureEvent nge0(Qt::BeginNativeGesture, QPointF(200,200),
  4.                              QPointF(202,202), QPointF(202,202), 1,1,1);
  5.     QCoreApplication::sendEvent(item, &nge0);
  6.  
  7.     QNativeGestureEvent nge1(Qt::ZoomNativeGesture, QPointF(200,200),
  8.                              QPointF(202,202), QPointF(202,202), 0.9,2,1);
  9.     QCoreApplication::sendEvent(item, &nge1);
  10.  
  11.     QNativeGestureEvent nge2(Qt::ZoomNativeGesture, QPointF(200,200),
  12.                              QPointF(202,202), QPointF(202,202), 0.8,3,1);
  13.     QCoreApplication::sendEvent(item, &nge2);
  14.  
  15.     QNativeGestureEvent nge3(Qt::EndNativeGesture, QPointF(200,200),
  16.                              QPointF(202,202), QPointF(202,202), 0.8,4,1);
  17.     QCoreApplication::sendEvent(item, &nge3);
  18. }
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But, none of my tries gave me any success (It looks like nothing happens in the PinchArea).

Any idea?