## delta_y property


In user agents where the default action of the wheel event is to scroll, the value MUST be the measurement along the y-axis (in pixels, lines, or pages) to be scrolled in the case where the event is not cancelled. Otherwise, this is an implementation-specific measurement (in pixels, lines, or pages) of the movement of a wheel device around the y-axis.
### Definition:
```python
@property
def delta_y(self):
    ...
@delta_y.setter
def delta_y(self, value):
    ...
```

### See Also
* module [`aspose.html.dom.events`](../../)
* class [`WheelEvent`](/html/python-net/aspose.html.dom.events/wheelevent)