You want to use a native.newTextField(). But here is the catch. You can’t use them on Windows. You can have them in your code but they don’t show up. There is a technical reason for this (it has to do with Microsoft now allowing native objects to share a canvas with OpenGL apps). There isn’t much we can do about it. You will have to test these on device.
As for the tracing app, there probably won’t be a specific tutorial or API to point you to. You need to learn about how to get images on the screen and how to manage touch events. There should be tutorials and such on the basics to accomplish this.