ref: 1168cce1e38d12939279ba45dfd6853edd29f0d2
dir: /sys/src/9/bitsy/screen.h/
typedef struct Cursorinfo Cursorinfo;
typedef struct Cursor Cursor;
extern ulong blanktime;
struct Cursorinfo {
Lock;
};
extern void blankscreen(int);
extern void flushmemscreen(Rectangle);
extern uchar* attachscreen(Rectangle*, ulong*, int*, int*, int*);
#define ishwimage(i) 0