ref: a98f911a178d3cc044d612e5ad96ee487bd887c8
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