How to fetch the WheelEvent or is there an alternative method ?

[Horbin-Magician]

I'm very sorry that I have encountered some problems again.

I am writing a screenshot program, and the program can pin the image on the screen.
Now, I want to zoom the image by scrolling the wheel.

However, I found some relevant information: #1280, #680, there maybe no public api to fetch the WheelEvent. Is there an alternative method?

I think #1280 is a good idea, or add a wheel-event callback to Flickable?

[ogoffart]

We need to implement wheel event as described in #1280.

On what kind of control are you trying to intercept the wheel events?

[Horbin-Magician]

This is my old code when using qt and c++:

void ShotterWindow::wheelEvent(QWheelEvent *e)
{
    if(e->angleDelta().y() > 0) m_zoom = m_zoom + 0.1;
    else if (e->angleDelta().y() < 0 && m_zoom > 0.1) m_zoom = m_zoom - 0.1;
    setGeometry(zoomRect(m_geoRect, m_zoom).toRect());
    emit sgn_rect_change(this->geometry());
}

I don't know how to intercept the wheel events using slint.

[ogoffart]

One would need to implement #1280

[Horbin-Magician]

Yes, that's the easiest way. Thank you for your reply and thank you very much for the work of your team.