kPrimaryStylusButton top-level constant Null safety
The bit of PointerEvent.buttons that corresponds to the primary stylus button.
The primary stylus button is typically the top of the stylus and near the tip but can be reconfigured to be a different physical button.
- kSecondaryButton, which has the same value but describes its cross-device concept.
const int kPrimaryStylusButton = kSecondaryButton;