keyboard.h

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#ifdef PLAN9
#pragma src "/sys/src/libdraw"
#pragma lib "libdraw.a"
#endif

typedef struct 	Keyboardctl Keyboardctl;
typedef struct	Channel	Channel;

struct	Keyboardctl
{
	Channel	*c;	/* chan(Rune)[20] */

	char		*file;
	int		consfd;		/* to cons file */
	int		ctlfd;		/* to ctl file */
	int		pid;		/* of slave proc */
};


extern	Keyboardctl*	initkeyboard(char*);
extern	int			ctlkeyboard(Keyboardctl*, char*);
extern	void			closekeyboard(Keyboardctl*);

enum {
    KF= 0xF000, /* Rune: beginning of private Unicode space */
    Spec=   0xF800,
    /* KF|1, KF|2, ..., KF|0xC is F1, F2, ..., F12 */
    Khome=  KF|0x0D,
    Kup=    KF|0x0E,
    Kpgup=  KF|0x0F,
    Kprint= KF|0x10,
    Kleft=  KF|0x11,
    Kright= KF|0x12,
    Kdown=  Spec|0x00,
    Kview=  Spec|0x00,  
    Kpgdown=    KF|0x13,
    Kins=   KF|0x14,
    Kend=   KF|0x18,

    Kalt=       KF|0x15,
    Kshift= KF|0x16,    
    Kctl=       KF|0x17,
};