< Set to one of the SDL_MOUSEWHEEL_* defines. When FLIPPED the values in X and Y will be opposite. Multiply by -1 to change them back
< X coordinate, relative to window
< Y coordinate, relative to window
< In nanoseconds, populated using SDL_GetTicksNS()
< SDL_EVENT_MOUSE_WHEEL
< The mouse instance id in relative mode or 0
< The window with mouse focus, if any
< The amount scrolled horizontally, positive to the right and negative to the left
< The amount scrolled vertically, positive away from the user and negative toward the user
Mouse wheel event structure (event.wheel.*)
\since This struct is available since SDL 3.2.0.