DDE-TOPIC attribute (Windows only) The topic name of the most recent conversation (for example, the "System" topic, or the name of an Excel worksheet such as "Sheet1"). This attribute is supported only for backward compatibility. Use the Component Object Model (COM) instead. Data type: CHARACTER Access: Read-only Applies to: FRAME widget This attribute applies to any frame in Windows that is a Dynamic Data Exchange (DDE) frame for a DDE conversation.
