Basic scrollbar question

[Dr.John R.Vokey]

The Thumb Size also affects the number and distribution of the tick 
marks.

On 22-Sep-04, at 10:00 AM, metacard-request at lists.runrev.com wrote:

> Ken Ray wrote:
>
>>> Also not sure how to control the marks - it would make sense if they
>>> were representing the pageInc value - but it is a smaller setting.
>>>
>>>
>>
>> It actually represents the pageInc value *plus one* (I'm assuming for 
>> the
>> "0" setting). So if I set up a scale with a min of 0 and a max of 
>> 100, with
>> a pageInc of 10 and a lineInc of 1, I'll get 11 tick marks, for:
>>
>> 0  10  20  30  40  50  60  70  80  90  100
>>
>
> Well actually not: if you set the pageInc to 11 you get the thumb to
> jump 10 steps, but the markers see to be separated in steps of 8.3 (ie
> 83 / 10)
>
> To get tick marks like this (for the scale running from 0 -100):
>
>     0    10    20    30    40    50    60    70    80    90   100
>
> You need to set the pageInc to 12 ! And then of course clicking on the
> scroll bar jumps 11. Seems logical :)
>
> Can someone confirm this with recent engines?
>
>
--
John R. Vokey, PhD
Professor
B.E.R.G. - Behaviour and Evolution Research Group
Micro-Cognition Laboratory
Department of Psychology & Neuroscience
University of Lethbridge
Lethbridge, Alberta T1K 3M4
CANADA