ref: c7fd2271fc751c1cdcc53ca5b822837c261a04e2
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