ovr_Notification_MarkAsRead Function
Mark a notification as read. This causes it to disappear from the Universal Menu, the Oculus App, Oculus Home, and in-app retrieval.
A message with type ovrMessage_Notification_MarkAsRead will be generated in response.
This response has no payload. If no error occurred, the request was successful. Yay!
ovrRequest ovr_Notification_MarkAsRead(ovrID notificationID)