I was looking for the IStroker and IStrokerFactory interface in the UWP library. I already updated it to 1.3.0 but I still couldn't find the stroker. The android version has it. The documentation seems to show the same method of creating custom inking.
thank you for your question.
Currently, the IStroker and IStrokerFactory interfaces have not been implemented yet on UWP.
We keep you updated when it is done.