This method returns a pointer to the next connection information object in the ECLConnList collection given a connection in the list. The application supplies a pointer to a connection previously returned by this function or GetFirstConnection. See ECLConnection Class for details on its contents. The returned pointer is not valid after the next ECLConnList Refresh() call, or the ECLConnList object is destroyed. A NULL pointer is returned if there is an attempt to read past the end of the list. Successive calls to this method (supplying the prior pointer on each call) iterates over the list of connections. After the last connection is returned, subsequent calls return a NULL pointer. The first connection in the list can be obtained by supplying NULL for the previous connection.