Events for when window is maximized/minimized

[sunjay]

There is currently no WindowEvent for when a user clicks the maximized/minimized buttons. It would be great if some could be added since there is currently no way to detect that otherwise. You can set the maximized state using set_maximized, but you have no way of knowing when the user does that themselves. You could probably hack around it using the Resized event or something, but I think it makes more sense for that to have its own variant in the WindowEvent enum.

I'm not sure if something similar makes sense for the window fullscreen state, but an event should be added for that too if it is possible for the user to change that themselves.

[kchibisov]

moving to winit, since it's something it should do, if it'll be accepted.

[repi]

We would want this as well, to be able to persist a setting that the app window was maximized so we can start up with that state

[rhysd]

I want Minimized event and Restored event for my practical use case.

I'm using WebView2 for my application and WebView2 provides a way to reduce memory consumption on inactive state.

• https://github.com/MicrosoftEdge/WebView2Feedback/blob/main/specs/MemoryUsageTargetLevel.md
• https://learn.microsoft.com/en-us/dotnet/api/microsoft.web.webview2.core.corewebview2.memoryusagetargetlevel?view=webview2-dotnet-1.0.2045.28

To determine when application goes inactive and when application goes back to active state, I need to receive the events. When Minimized is received, I can determine the application is inactive and when Restored is received, I can determine the application is back to active.