NB_BUTTON_CLICKED
#define BUTTON2_CLICKED NB_MOUSE_MASK(2, NB_BUTTON_CLICKED)
#define BUTTON3_CLICKED NB_MOUSE_MASK(3, NB_BUTTON_CLICKED)
#define BUTTON4_CLICKED NB_MOUSE_MASK(4, NB_BUTTON_CLICKED)
#define BUTTON5_CLICKED NB_MOUSE_MASK(5, NB_BUTTON_CLICKED)
#define BUTTON1_CLICKED NB_MOUSE_MASK(1, NB_BUTTON_CLICKED)