How/When are behavior references resolved?

[Pete]

Thanks Sean.  I tried trapping the ResolutionError message but never got
triggered so I guess they didn't put it in there.
Pete
Molly's Revenge <http://www.mollysrevenge.com>




On Sat, Jul 16, 2011 at 5:42 AM, Shao Sean <shaosean at wehostmacs.com> wrote:

> This was the information given when behaviors (aka parentScripts) were
> introduced in 4.0, not certain how much has changed in later releases as I
> have not upgraded.. You might want to see if they ever did get around to
> adding the "resolutionError" message and see if it is getting fired (which
> will help you track down the issue)..
>
>
>
> PARENT SCRIPTS - RESOLUTION
>
> A control's parent script reference is saved in the stackfile as three
> pieces of information:
>  1) button id
>  2) stack name
>  3) mainstack name (if stack is substack)
> This is the minimum required information to uniquely identify a button
> within a running Revolution environment.
>
> Immediately after loading a stack file, an attempt is made to resolve all
> parentScript references - the engine acts as if it constructs a control
> reference:
>  button id <id> of stack <stack name> [ of stack <mainstack name> ]
> And attempts to access it. Thus, the stackFiles property will be searched
> as appropriate and any needed stacks will be loaded.
>
> At present, if a parentScript fails to resolve it fails silently. In the
> next dp, the engine will send a 'resolutionError' message in a similar way
> to how it sends a 'scriptError' message when a loaded stack's script fails
> to compile. Once resolution has failed for a parentScript reference, no
> attempt will be made to resolve it again *unless* the parentScript of an
> object is set to the same reference.
>
> A parentScript reference does *not* track changes to the name of the stack
> and/or substack - if the names of stacks change that contain objects being
> used as parentScripts then all parentScript references to those objects will
> be broken.
>
> This apparant strictness of parentScript resolution is necessary to ensure
> that references remain consistent throughout a Revolution session.
>
>
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