IRtdServer.Heartbeat Method
Determines if the real-time data server is still active. Returns a Long value. Zero or a negative number indicates failure; a positive number indicates that the server is active.
Syntax
expression.Heartbeat
expression A variable that represents an IRtdServer object.
Return Value
Long
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.heartbeat heartbeat method