IRtdServer.Heartbeat Method
Definition
Important
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Determines if the real-time data server is still active. Zero or a negative number indicates failure; a positive number indicates that the server is active.
public:
int Heartbeat();public int Heartbeat ();Public Function Heartbeat () As IntegerReturns
Remarks
The Heartbeat method is called by Microsoft Excel if the HeartbeatInterval property has elapsed since the last time Excel was called with the UpdateNotify() method.