On Mar 4, 2008, at 2:38 PM, Timothy Miller wrote:
Greetings,
I'm don't quite understand when (or if) it is necessary to specify
cd fld "whatever" vs bg fld "whatever" vs fld "whatever" in Rev.
When confusion arises, I'm solving it by trial and error. Some of
my stacks and scripts, retreaded from hypercard, require the
correct field or button specification, or there is "no such object."
I once knew the rules in hyperCard, but they were rather confusing.
As I recall, fields were presumed cd fields, unless specified bg
fields, and buttons were presumed bg buttons, unless specified cd
buttons. As I recall, this was changed in Rev.
It seems to matter that a field or button belongs to a group, if
"behave like a background" is turned on, but I'm not certain. I
looked at the Rev documentation, but couldn't find the explanation.
A brief explanation of the rules for specifying fields and buttons
in Rev scripts would be appreciated. A link or documentation
citation will suffice.
As a rule you never have to specify bg or cd before an object
reference in Revolution. The exception is when the stack property
HCAddressing is true, which happens when you have done a direct
import of a HyperCard stack. (See HCAddressing in the dictionary for
more info.) You're right that the rules in HyperCard were a little
confusing, and I don't miss the cd/bg distinction a bit.
Is it better to ask newbie questions here or on the web forum?
In my experience the mail list is a little more active than the forum.
HTH
Devin
Devin Asay
Humanities Technology and Research Support Center
Brigham Young University
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