Your suggestion seems very good if he had an instance variable for
the composite value, but as he said, he has no -setMyStringValue
method--his composite is generated on the fly with only -
myStringValue. So is
setKeys:triggerChangeNotificationsForDependentKey still relevant?
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The problem is that the 'value' of the control changes as a result of
key/value observation of myStringValue. The binding option
"Continuously Updates Value" determines how often myStringValue is set
as a result of editing the control (which presumably is never). One
must ensure that key/value observation of myStringValue occurs as a
result of key/value observation of the properties on which it
depends ...
dave
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