Scrollbar (slider) mystery.

[Buster]

Hi Alex,

Bug 1912

reassigned but not solved

Greetings,
Wouter


On 18 Jun 2005, at 03:35, Alex Tweedly wrote:

> Here's some simple code:
>
>
>>   put the thumbPos of scrollbar "Slider1" into fR
>>   put fR  into msg
>>
>
> The slider has startvalue 1, endvalue 100, and thumbPos 75  (all  
> set in the property inspector).
>
> This prints out "75" just as I expected.
> But  fR doesn't *really* have the value 75, as I found out after  
> literally hours of debugging :-(
>
> If I change the code to
>
>
>>   put the thumbPos of scrollbar "Slider1" into fR
>>   put fR && fr+1 into msg
>>
>
> it prints out
> 75  75.856855
> (i.e.   fR really has  somewhere close to 74.866855 in it, but  
> "put"ting it for some reason rounds it 75)
>
> I assumed the value of the thumbPos would be an integer - mostly  
> because the prop inspector won't let me set any other values,  
> partly because I just expected it to be, and partly because that's  
> what it appears to be when you examine the variable by outputting  
> it (or by looking at it in the debugger).
>
> I can deal with non-integral values - but I'm really worried that a  
> value which was noticeably different from the integer was printed  
> out as an integer both in the debugger and by "put ... into msg".
>
> Am I missing something basic here ?
> Why should Rev be doing this ?
>
> P.S. the reason this took hours to find was that both  the put  
> statements I added for debugging and later the debugger itself were  
> giving misleading info - if either of them had said "74.85..." I'd  
> have seen the problem in 30 seconds (I think).
>
>
> -- 
> Alex Tweedly       http://www.tweedly.net