Re: %subst as a result.

[Mel Rothman <mel@xxxxxxxxxxxxxx>]

Rick Baird hit the nail on the head.

The second parameter of %subst must be an integer value. If the length of cTitle is odd, 
dividing it by 2 gives a non-integer result. Adding %int, as shown below, compiles and 
runs correctly.

/free 

  title = %subst(title:%int((%size(title) - %size(cTitle) / 2)));
/end-free

Booth Martin wrote:
> %subst as a result.
>
> I can't figure out two problems I believe are simply solved by others.
>
> I wish to populate a field with a constant, and center the text.
>
> Lets say we have a field called Title that is 40/alpha.
> Lets say we have a constant field of cTitle, with a value of 'Screen Title"
>
> I know how to do this with several lines of code, but I'd like to use %subst
>
> I believe this should work, but it doesn't compile:
>
>    C   eval  %subst(Title:
>    C            ((%size(Title) - %size(cTitle) / 2)
>    C             = cTitle
>
> This does not compile and I can't see why not.
>
> If it did compile I would then ask my other question. How does one also 
> clear the target field?  Must that be done first?