Gets the ordering of the specified category of accounts.
[in] The category class ID for which to get the order.
[out] The number of accounts.
[out] Pointer to an array of accounts.
An invalid argument has been provided.
The account manager has not been initialized for use.
Before calling this method, the caller allocates only an array pointer prgAccts but no memory for the array at which prgAccts points. After this method returns, the caller must use IOlkAccountManager::FreeMemory to release the memory allocated for prgAccts.