Re: ScrollWheel, Xdps and NSEvent modification

[Richard Frith-Macdonald]

On Friday, March 1, 2002, at 07:37 AM, Richard Frith-Macdonald wrote:

> I think I prefer option2, as having a new event type for this aids 
> clarity.
>
> Option 1 has two problems -
>
> 1. It's not obvious to programmers that a scrollwheel produces mouse 
> pressure
>
> 2. It relates scrollwheel movement to the mouse - which is not IMO a 
> good thing.
> While the scrollwheel is located on the mouse, it really has little to 
> do
> with it - the mouse being a tool for moving around a 2D environment, 
> and the
> scrollwheel really being quite an artificial add-on, located on the 
> mouse
> solely for physical convenience.
> This is rather like the steering wheel on a car including the horn ... 
> the extra
> control is convenient to put there, but has nothing to do with steering.

PS.  Thanks for addressing the issue.  It's good to add new capabilities.