setUserdata
setUserdata — associates the point with a user object.
void setUserdata( | userdata); |
void* userdata;userdataAny user-supplied data of size (void*).
Sets the userdata property of a point. The user is free to
set this to anything (of the appropriate size). When a point is updated in the
DataHubConnector point cache, this property
is maintained, providing the user with a facility for maintaining an association
between a point and an object in the user's application space.