Does a Control Exist?

Mike Markkula acm at armas.com
Mon Nov 25 06:29:33 CET 2013


What ever happened to "on error"?
Mike

On Nov 24, 2013, at 9:25 AM, Peter Haworth <pete at lcsql.com> wrote:

> I feel like that's more a problem with custom property creation than a
> problem with errors on objects that don't exist.  The custom property issue
> has been discussed a few times on the list and Alex Tweedly has a neat
> little stack that helps with the issue. Sure wish there was an engine/IDE
> solution to it though.
> 
> Pete
> lcSQL Software <http://www.lcsql.com>
> 
> 
> On Sun, Nov 24, 2013 at 8:31 AM, Ray <ray at linkit.com> wrote:
> 
>> After loosely following the item delimiter thread last week a similar idea
>> came to me today which might be an interesting discussion.
>> 
>> It's often time consuming to type spell out...
>>   if there is a field "My Field" then put field "My Field" into myVar
>> 
>> If I don't first check to see if the control exists [and it doesn't] I get
>> an error and the script stops execution.
>> 
>> I don't have to do this with a custom property.  That is if the script
>> is...
>>   put the NewProperty of this card into myVar
>> and said property doesn't exist, I simply end up with nothing in myVar,
>> but it doesn't cause an error and the script continues.
>> 
>> Does anybody think it would be worth it to have a way to stop errors from
>> being produced when referring to non-existent controls?
>> 
>> Ray Horsley
>> LinkIt! Software
>> 
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