(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.