How do we do idle time processing in WPF application?

Question

有没有办法在 WPF 应用程序中进行空闲时间处理，相当于 MFC 中的 OnIdle 事件？

Answer 1

You can dispatch a task (using the Dispatcher in the normal way) with a DispatcherPriority of ApplicationIdle , which will only be executed when the application is idle. Sample code:

DispatcherPriority priority = DispatcherPriority.ApplicationIdle;    
Application.Current.Dispatcher.BeginInvoke(priority, action);

Answer 2

它是Dispatcher.Hooks.DispatcherInactive事件。

Answer 3

A late alternative answer (as a memo to myself):

System.Windows.Interop.ComponentDispatcher.ThreadIdle += (_, __) =>
{
    Debug.Print("Idle");
};