virtual BOOL Edit(long nRecord) = 0;
nRecord
Specifies the record id (0 based).
TRUE if the operation was successful. FALSE otherwise.
Call this function to start an edit mode. Before you start editing a record call Edit on that record, then use SetValue to modify the values in the fields within that record and call Update to store these changes into the data source.
The engine will temporarily save the changes in a buffer and store it into the data source when you call Update.
CanUpdate should return TRUE for Edit to be successful.
CGXDBEngine::SetValue CGXDBEngine::Update
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