List Fields and clickLine

[Randy Hengst]

Hi All,

I've been lurking on the list for about a year and a half. During  
that time I've been translating stacks I made using HyperStudio --  
which used a logo-based scripting language -- into Rev. I pretty much  
can now create anything in Rev I could have made with HyperStudio.  
I've found (as you know) that Rev is much more powerful.

I've begun playing with list fields this past week and was able to  
create basic drag-lines-within-a-field -- script. With the help up  
Scott Rossi's getInLine stack, Jan Schenkel's dragDropList stack and  
the recent discussion about colorizing lines in a field (thanks to  
Jim Ault for sending his stack to me) I've been able to develop a  
nice working version.

However, I've noticed an anomaly that I thought I was causing be  
adding text and returns and removing characters in my list field.  
However, I've been able to reproduce the problem in a new list field  
with no additions beyond the default three choices.

Here's the problem. In a list field it is possible to highlight the  
last line without the clickline reading any data. I've been able to  
reproduce the problem this way. Create a new stack, create a list  
field, drag the height enough to have room for several blank lines --  
but don't add any lines of text to the default three choices. Use  
this script in the field:

on mouseDown
   if the clickLine is empty then
     beep
   else
     put the value of the clickLine
   end if
end mouseDown


Click to highlight the choices to make sure things work as expected,  
then leave choice 1 or 2 highlighted and click in the blank area  
below choice 3. Using very small increments, click in the blank space  
below choice 3 and move up until it highlights. If choice 3 is put,  
try again using smaller increments. There is an area just below the  
line where choice 3 will highlight, but the clickline reports empty.

I noticed the problem while using Rev 2.8.1 on a PowerBook G4 with  
OSX 10.4.10. I've also been able to reproduce the problem using Rev  
2.7.4

Any thoughts would be appreciated.

take care,
randy hengst