CoreDispatcherPriority CoreDispatcherPriority CoreDispatcherPriority CoreDispatcherPriority Enum


Defines the priority for window event dispatches.

public : enum class CoreDispatcherPriority
enum class winrt::Windows::UI::Core::CoreDispatcherPriority : int32_t
public enum CoreDispatcherPriority
Public Enum CoreDispatcherPriority

Windows 10 requirements

Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


High High High High 1

High priority. Delegates are invoked immediately for all synchronous requests. Asynchronous requests are queued and processed before any other request type.


Do not use this priority level in your app. It is reserved for system events. Using this priority can lead to the starvation of other messages, including system events.

Idle Idle Idle Idle -2

Lowest priority. Use this priority for background tasks. Delegates are processed when the window's main thread is idle and there is no input pending in the queue.

Low Low Low Low -1

Low priority. Delegates are processed if there are no higher priority events pending in the queue.

Normal Normal Normal Normal 0

Normal priority. Delegates are processed in the order they are scheduled.