On 2/5/11 5:31 PM, Peter Haworth wrote:
I just figured out what was going on and I guess it's worth
mentioning since it points out the dangers of testing modal dialogs.

In the preOpenCard handler for the modal dialog there was this
statement:

set the width of this card to 425

This, of course, is not a valid statement since cards don't have a
width property.

They do, actually, but it is read-only. You can't set it.


So I guess now my question for the community is - What techniques do
you use to test modal dialogs?

I debug first without using a modal, like you did. That catches most stuff. Then if it behaves differently while modal, sometimes placing the word "breakpoint" on a line works, where setting a red-dot temporary breakpoint doesn't. The engine interprets "breakpoint" and will halt the script when possible; the IDE interprets the dots and can't always intercept. If that fails, you can resort to putting info into the message box after every suspicious statement. In particular, putting the result works well for lots of things. But if the script is aborting, you might have to wrap it in a "try" structure instead:

try
 set the width of this card to 425
catch tErr
 put "Setting width:" && tErr
end try

Usually testing the stack as a non-modal first catches almost everything though.

--
Jacqueline Landman Gay         |     jac...@hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com

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