Member variable XbpSLE():changed Foundation
Indicates whether the edit buffer has been changed by user entry.
By default, this instance variable contains the value .F. (false). As soon as the edit buffer of the XbpSLE object has been changed by keyboard entry, :changed is set to .T. (true). This can be used to determine whether the edit buffer of an entry field has been changed. The instance variable :changed is automatically reset to .F. (false) whenever the :setData() or :undo() method is executed.
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