This sample contains code to visualize events raised when using a Surface Pen with the Surface Duo. More information is available in the accompanying blog post.

Different pen states detected by the sample:

• The green circle represents the point under the pen tip; its size is controlled by the pressure
• The blue circle size represents the pressure; it will turn pink if the button is pressed
• The red triangle represents the orientation
• If an eraser is used, the shapes will become outlines

Pen with low pressure	Pen with high pressure	Pen with the barrel button pressed	Pen held upside down with the eraser on the screen

• Pen input on Surface Duo docs
• Pen events blog post
• Get the Surface Duo emulator

This sample is also available in Kotlin.