@ V2D_VIEWSYNC_SCREEN_TIME
@ V2D_VIEWSYNC_AREA_VERTICAL
@ V2D_SCROLL_HORIZONTAL_FULLR
@ V2D_SCROLL_HORIZONTAL_HIDE
@ V2D_SCROLL_VERTICAL_FULLR
@ V2D_SCROLL_VERTICAL_HIDE
@ V2D_SCROLL_VERTICAL_HANDLES
@ V2D_SCROLL_HORIZONTAL_HANDLES
struct SmoothView2DStore * sms
struct wmTimer * smooth_timer