在UWP中检测空闲用户

Question

I would like to know when the user is idle to perform an action, so I decided that a good start would be to attach to the PointerMoved event in my Page . Every time the mouse cursor is moved, the counter is reset.

The problem is that my Page contains a WebView control that shows a website. It covers almost the whole part of the screen. I have observed that when I move the mouse cursor, the PointerMoved event isn't raised when it's over the WebView .

But it's even worse: the same happens when I add a handler to myWebView.PointerMoved . It doesn't raise any event!

Maybe I'm doing it wrong. What can I do to detect when the user is idle? Am I using the wrong method?

Answer 1

I just tried it even via the CoreWindow object and it's PointerMoved event but even that one isn't fired with the webview.

Maybe background task with single proces model can let you accomplise your scenario?

The background task model contains triggers for userpresent and useraway:

new SystemTrigger(SystemTriggerType.UserPresent, false);
new SystemTrigger(SystemTriggerType.UserAway, false);

And with the single proces model you can make sure your app getting called and not a background task in an other proces: https://blogs.windows.com/buildingapps/2016/06/07/background-activity-with-the-single-process-model