Pressure-sensitive pen button event structure (event.pbutton.*)
Defined in <SDL3/SDL_events.h>
typedef struct SDL_PenButtonEvent
{
SDL_EventType type; /**< SDL_EVENT_PEN_BUTTON_DOWN or SDL_EVENT_PEN_BUTTON_UP */
Uint32 reserved;
Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */
SDL_WindowID windowID; /**< The window with pen focus, if any */
SDL_PenID which; /**< The pen instance id */
Uint8 button; /**< The pen button index (1 represents the pen tip for compatibility with mouse events) */
Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */
Uint16 pen_state; /**< Pen button masks (where SDL_BUTTON(1) is the first button, SDL_BUTTON(2) is the second button etc.), SDL_PEN_DOWN_MASK is set if the pen is touching the surface, and SDL_PEN_ERASER_MASK is set if the pen is (used as) an eraser. */
float x; /**< X coordinate, relative to window */
float y; /**< Y coordinate, relative to window */
float axes[SDL_PEN_NUM_AXES]; /**< Pen axes such as pressure and tilt (ordered as per SDL_PenAxis) */
} SDL_PenButtonEvent;
This struct is available since SDL 3.0.0.