public static extern DISPMANX_STATUS_T Snapshot(DISPMANX_DISPLAY_HANDLE_T display, DISPMANX_RESOURCE_HANDLE_T snapshot_resource, DISPMANX_TRANSFORM_T transform);
public static extern DISPMANX_STATUS_T DisplayGetInfo(DISPMANX_DISPLAY_HANDLE_T display, out DISPMANX_MODEINFO_T pinfo);
public static extern DISPMANX_ELEMENT_HANDLE_T ElementAdd(DISPMANX_UPDATE_HANDLE_T update, DISPMANX_DISPLAY_HANDLE_T display, int layer, ref VC_RECT_T dest_rect, DISPMANX_RESOURCE_HANDLE_T src, ref VC_RECT_T src_rect, DISPMANX_PROTECTION_T protection, ref VC_DISPMANX_ALPHA_T alpha, ref DISPMANX_CLAMP_T clamp, DISPMANX_TRANSFORM_T transform);
public static extern DISPMANX_STATUS_T DisplayClose(DISPMANX_DISPLAY_HANDLE_T display);
