Jim:
And setting the numberformat property, which I thought might force the value x
to show decimals, does not. That number is indeed always an integer. It does
force the x+1 value to display according to the format, useless as that is.
Here is one for you. Set the numberFormat to 0.0. Now drag slowly. The x+1
value tracks the x value, but always changes by 0.1. That is, the decimal
value simply counts up or down by 0.1 at regular intervals as you drag either
left or right. No longer odd, or even buggy. Bogus.
I guess you always need to set the numberformat to 0 before trying anything
as outlandish as you did.
Craig Newman
-Original Message-
From: James Hurley jhurley0...@sbcglobal.net
To: use-livecode@lists.runrev.com
Sent: Sat, Jan 29, 2011 2:54 pm
Subject: The many faces of the thumb position
I dissevered this the hard way.
Put this into the script of a scrollbar:
on scrollbardrag
put the thumbposition of me into x
put x into field 1
put x*1 into field 2
end scrollbardrag
You will find that field 1 gets the round(x) while field 2 gets the decimal
value of the thumb position, that is you may see 2 into field 1 but 2.3455 in
field 2.
Furthermore, if one puts x into a variable, the script window shows only the
round value. But if you use that value in a calculation the value becomes the
decimal value.
It is helpful to have access to the decimal value of the thumb position, but it
is confusing to see only the round of that value in the editor.
Is this an old issue that I am just stumbling over?
Jim Hurley
P.S. If you use On scrollbardrag x in the script of the scroll bar, then x is
ONLY the whole number value of the scrollbar value.
Beware of other scripts that use the scrollbar thumb position. That position
will be DISPLAYED as the whole number in the script, but will ACT as the
decimal value of the thump position. This really hung me up.
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