Creates a McDBNode Write Lock on the Node.

An Integer value.   A Integer with value LockNode count.
Failure Returns -1..

object.LockNode

The LockNode Method syntax has these parts:

While the Node is locked no other clients will be able to modify it. Under normal circumstances this function should only be used when .LockNodeMode = mcdatNRLOptimistic. The Lock will be released when the Node is released. A Reference counter is retained to manage multiple LockNode / UnLockNode calls. See UnLockNode.

E_INVALIDARG: LockNodeMode = mcdatNRLNone. E_INVALIDARG: IsEmpty = True E_ACCESSDENIED: ReferenceActivate() = False ERROR_TIMEOUT: mcdatNRLOptimistic lock timed out. ERROR_LOCK_FAILED: For each cycle of mcdatNRLOptimistic lock attempt (See ErrorInfo and Notifications). Propagated: .LockMode ERROR_NOTIFY_ENUM_DIR: Lock may not be perform because Node has changed. Call Refresh or SetNode.