The many faces of the thumb position
dunbarx at aol.com
dunbarx at aol.com
Sat Jan 29 21:13:20 EST 2011
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.
From: James Hurley <jhurley0305 at sbcglobal.net>
To: use-livecode at 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:
put the thumbposition of me into x
put x into field 1
put x*1 into field 2
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
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
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?
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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