typedef struct _PRL_IO_SCREEN_SURFACE {
  PRL_UINT32 windowId;
  PRL_UINT32 surfaceId;
  PRL_INT32 scrollX;
  PRL_INT32 scrollY;
  PRL_UINT32 width;
  PRL_UINT32 height;
  PRL_UINT32 display;
} PRL_IO_SCREEN_SURFACE;