extern WR_IMAGE, WR_CMD, WR_RLE, RD_CMD, RD_IMAGE;
#define TOGGLE (8<<1)
#ifdef DEFINING
int WR_IMAGE =(1<<1);
int WR_CMD =(4<<1);
int WR_RLE =(5<<1);
int RD_CMD =(6<<1);
int RD_IMAGE =(7<<1);
#endif
#define CVSETDMA (('c'<<8)|1)
typedef struct Point{
int x, y;
}Point;
typedef struct Rectangle{
Point origin, corner;
}Rectangle;
#define Pt(x, y) (x), (y)
#define Rect(a, b, c, d) (a), (b), (c), (d)
#define Rpt(a, b) (a), (b)
extern int cv;