why does deltaY in scrollWheel method of NSView report often 0.0 when using multitouch pad?
I have an NSWindow containing a subclassed NSOpenGLView. When using the wheel of a mouse, then every wheel step yields 0.1 if turning the wheel slowly. When using the multitouch pad of a macbook and scrolling slowly, then I get many events with deltaY of 0.0 and sporadically one with 0.3 or 0.4. Does anybody know where this comes from and how it can be switched off? When scrolling in a text editor with the multitouch pad it seems to work.

Thanks for any hints.
why does deltaY in scrollWheel method of NSView report often 0.0 when using multitouch pad?
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I have an NSWindow containing a subclassed NSOpenGLView. When using the wheel of a mouse, then every wheel step yields 0.1 if turning the wheel slowly. When using the multitouch pad of a macbook and scrolling slowly, then I get many events with deltaY of 0.0 and sporadically one with 0.3 or 0.4. Does anybody know where this comes from and how it can be switched off? When scrolling in a text editor with the multitouch pad it seems to work.

Thanks for any hints.