Language Reference Guide : 5. Events : ChildBufferChanged Event
 
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ChildBufferChanged Event
The ChildBufferChanged event is triggered whenever the user does anything—including Cut and Paste—to change the contents of a composite field's EntryField.
This event has the following syntax:
on ChildBufferChanged [compositefieldname]
The following attributes of the FrameExec class can be used in the ChildBufferChanged event block:
TriggerField
Specifies the EntryField that has changed
OriginatorField
Specifies the field specified in the on ChildBufferChanged statement
More information:
OriginatorField Attribute
TriggerField Attribute