Mark Swindell wrote:
The thumbPosition will give you the position of the thumb relative to
the endvalue of the scrollbar itself. So that if the scrollbar's
endvalue is set to 100 (default) and it's halfway along, the thumbpos
will be 50. If the endvalue is set to 200, it will show 100. But I'm
trying to place a graphic based on the actual thumb position relative
to the screen, not the scrollbar.
Mark
Hi Mark,
This isn't perfect but it's a starting point if you want to do it this
way. I broke the formula down to its parts instead of doing a one-liner:
on scrollbarDrag pNewPosition
put the left of me into tWindowOffset
put the thumbSize of me div 2 into tThumbOffset
put (the endValue of me - the startValue of me) into tMyUnits
put the width of me / tMyUnits into tPixelsPerUnit
put round(tPixelsPerUnit * (pNewPosition - tThumbOffset)) into tThumbH
set the right of btn 1 to (tThumbH) + tWindowOffset
end scrollbarDrag
I created a button that follows the thumb around - not perfectly, but
you want to tweak it anyway, right? ;o)
Hope this helps -
Phil Davis
On Feb 5, 2009, at 9:44 PM, dunbarx wrote:
mark.
So this is a scrollbar control, not a field. Right. I have not played
with these yet, but don't I remember that there is a property that
indicates the relative position of the thumb with respect to the
amount of "progress" in the control, and isn't this even closer to
what is needed without all that stuff I mentioned?
Craig Newman
On Feb 6, 2009, at 12:38:06 AM, "Mark Swindell"
<[email protected]> wrote:
That won't work in this case as it's just a horizontal scrollbar not
attached to a field or group.
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Phil Davis
PDS Labs
Professional Software Development
http://pdslabs.net
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