Register a connection between a cell range and the data it uses
int AddConnection( LPCSTR pszTopic );
The topic string. Whenever this topic string is passed to the method UpdateCells this cell will be updated (as will any other cell connected to the topic).
The function returns a member of the enumeration CXllPush::AddConnectionReturnValues. A negative value indicates an error.
This function may only be called from the main thread. It is generally only called from add-in functions.