XPMouseState t

XPMouseState_t

When the mouse is clicked or dragged, a pointer to this structure is passed to your widget function.

typedef struct {
     int                       x;
     int                       y;
     int                       button;

Mouse Button number, left = 0 (right button not yet supported.

     int                       delta;

Scroll wheel delta (button in this case would be the wheel axis number).

} XPMouseState_t;