Tao.Sdl SDK Documentation

Sdl.SDL_BUTTON_WHEELUP Field

Button 4: Mouse wheel up (may also be a real button)

[Visual Basic]
Public Const SDL_BUTTON_WHEELUP As Byte = 4
[C#]
public const byte SDL_BUTTON_WHEELUP = 4;

See Also

Sdl Class | Tao.Sdl Namespace