Hello,
I have a user reporting his horizontal wheel is inverted using the evdev input
driver. If I understand correctly, evdev handles positive values as "to the
right" and negative as "to the left":
case REL_HWHEEL:
if (value > 0)
PostButtonClicks(pInfo, wheel_right_button, value);
if (value < 0)
PostButtonClicks(pInfo, wheel_left_button, -value);
break;
But the, somewhat recent, kernel commit
740f370dc61dc478d891d7d47660bb3ae39ddb4f, by Dan Nicholson states:
"Some Logitech mice have a tilt wheel which register as HWHEEL buttons. The
events are positive for a click to the right and negative for a click to the
left. Applications expect the opposite, though."
Since I have no mice with horizontal scroll wheels, I have no idea what is the
correct way to handle this.
Thanks,
Ander
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