Enhancements:Pls add the asynchronous screen casting function that MHL also has(希望添加mhl也有的异步投屏功能) #5936
Description
EN（translated）：
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NO
Nowadays, using the Display Link docking station or devices that already support MHL, asynchronous screen casting can be used, which means creating a virtual display that displays different content from the phone and can be done simultaneously. This can also adapt to the resolution and scale of the computer, making the experience on the computer completely like a large tablet (if the display supports touch screen). At the same time, the phone can also choose to transform into a mouse, flying mouse, or other controller on the computer.
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Additional context
An actual example can refer to this video:https://www.bilibili.com/video/BV1XqkuYoEcA
中文（原文）：
内容：
现在使用displaylink拓展坞或者已经支持mhl的设备都可以使用异步投屏，也即是可以创建一个虚拟显示器，让显示器和手机的显示内容不同，可以同时进行，这样还可以适配电脑端的分辨率和比例，使电脑端的体验完全和一个大平板一样（如果显示器支持触屏的话），同时手机端也可以选择化身为电脑端的鼠标，飞鼠等操控器。
额外的例子：
实际的例子可以参考这个视频：https://www.bilibili.com/video/BV1XqkuYoEcA