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Example: DisableControls, EnableControls, Eof

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Usually DisableControls is called within the context of a try...finally block that re-enables the controls even if an exception occurs. For example:

with CusTPSQLTable do
begin
  DisableControls;
  try
    First;
    while not Eof do
    begin
     // Process each record here...
     Next;
    end;
  finally
    EnableControls;
  end;
end;