配置开发环境

Half-way through this thread from 2014 is the mention that "there is no [...] API for pen injection", and things haven't improved since then, so a driver for pen injection is still required. Having said that, the Windows UI Automation API can apparently inject all pointer types (and a game pad to boot), but that's only supported from Windows 10 Anniversary Edition (and I haven't tried it).

https://stackoverflow.com/questions/43575045/simulate-input-in-uwp-app

https://blog.mzikmund.com/2018/01/injecting-input-in-uwp-apps

https://docs.microsoft.com/en-us/windows/uwp/packaging/app-capability-declarations#special-and-restricted-capabilities

https://stackoverflow.com/questions/45508931/how-to-inject-pen-inputs-from-a-digitiser-using-injecttouchinput-with-pt-pen-o

And there is no public apis in win32 for pen injection. If your system is Windows 10, version 1809, InjectSyntheticPointerInput can be used.

Windows 1703 build 15063

https://docs.microsoft.com/en-us/windows/uwp/whats-new/windows-10-build-15063

https://blogs.windows.com/windowsdeveloper/2017/01/13/new-bluetooth-features-in-creators-update-gatt-server-bluetooth-le/#OEQSwvvGsKuAHxpI.97