QueryUpdateAction enumeration (functiondiscoveryapi.h)

[Function Discovery is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions.]

Represents the type of action Function Discovery is performing on the specified function instance. This information is used by the client program's change notification handler.

Syntax

typedef enum tagQueryUpdateAction {
  QUA_ADD = 0,
  QUA_REMOVE = 1,
  QUA_CHANGE = 2
} QueryUpdateAction;

Constants

Remarks

When a client program implements the IFunctionDiscoveryNotification interface and passes the address of the interface to one of the Query methods, Function Discovery calls the client program's IFunctionDiscoveryNotification::OnUpdate method to notify the client program when a function instance which meets the query parameters has been added, removed, or modified.

Requirements