Re: OS X: mouse wheel on powerbooks broken, Option modifier

[David Reitter]

On 10 Jun 2005, at 11:15, YAMAMOTO Mitsuharu wrote:

> Could you try the following patch?

Doesn't work. Same problem. Mouse wheel works, two-finger-scrolling  
doesn't.

>  Also I find the new two finger scrolling on the trackpad doesn't do
> > anything.
>
> I can't test about this one because I don't have a recent PowerBook.
> Does anyone know what kind of Carbon event is produced by the two
> finger scrolling?

OK, I checked that. It looks like we're not getting  
kEventMouseWheelMoved, but some (int) 11.
That is not defined in CarbonEvents.h

For two-finger scrolling events (up/down/left/right):

GetEventKind (eventRef): 11
 GetEventClass (eventRef): 1836021107


For mouse wheel scrolling events

GetEventKind (eventRef): 10 (kEventMouseWheelMoved)
 GetEventClass (eventRef): 1836021107


I have no idea why I'm getting this. Other Carbon scroll away happily.

And while you're at it, may I suggest checking  
kEventParamMouseWheelAxis (only do something if it is  
kEventMouseWheelAxisY), and also kEventParamWindowPartCode to make  
sure that the mouse event does not go to the wrong frame. Emacs  
should scroll whatever window the mouse is over when the wheel is  
activated. If that's too difficult, at least scroll the first (or  
selected) window in the frame that the mouse was over...

- D

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