Need an example of how to use "try" and "catch"

[Peter M. Brigham, MD]

On Mar 22, 2012, at 11:33 AM, Jim Hurley wrote:

> For example, suppose one wanted to catch an error in the statement:
> 
>  put the {some built-in property of an object] of button "soAndso" into tProp
> 
> Where the built in property may not exist.How would one catch the error and perhaps proceed on the basis of the particular error message?

Note that getting the customProp of an object where the property doesn't exist will return <empty> but won't trigger any error. If you want to "catch" this then don't use a try statement, do something like

put the myProperty of btn "x" into tProp
if tProp <> empty then
   -- do something with the property
else
   -- handle "error" here
end if

-- Peter

Peter M. Brigham
pmbrig at gmail.com
http://home.comcast.net/~pmbrig