Linux Read input device demo

/******************************************************************* * Linux Read input device demo * Description: * This article is mainly to understand the previous colleague wrote input device a demo program. * 2016-3-24 Shenzhen Nanshan Ping Shan village Zengjianfeng **************************************************************** **/#include<stdio.h>#include<unistd.h>#include<sys/types.h>#include<fcntl.h>#include<linux/input.h>intMainintargcChar**argv) {    intFD; structinput_event ev; //Judging Parameters    if(ARGC <2) {printf ("Usage:%s <input device>\n", argv[0]); return 0; }    //turn on the deviceFD = open (argv[1], O_RDWR); if(FD <0) {printf ("Open%s", argv[1]);        Fflush (stdout); Perror (" "); return 0; }    //Loop Read     while(1) {        //reading DataRead (FD, &ev,sizeof(structinput_event)); //Print the current trigger typeprintf"ev = =%x \ n", Ev.type);
         Switch(ev.type) { Caseev_syn:printf ("-------------------------\ n");  Break; //Key         Caseev_key:printf ("key down/up:%d \ n", Ev.code);  Break; //Mouse         Caseev_rel:printf ("Mouse:"); if(Ev.code = =rel_x) {printf ("X--%d\n", Ev.value); } Else if(Ev.code = =rel_y) {printf ("y--%d\n", Ev.value); }             Break; //Touch Screen         Caseev_abs:printf ("TS:"); if(Ev.code = =abs_x) {printf ("X--%d\n", Ev.value); } Else if(Ev.code = =abs_y) {printf ("y--%d\n", Ev.value); } Else if(Ev.code = =abs_pressure) {printf ("Pressure:%d\n", Ev.value); }             Break;    }} close (FD); return 0;}

Linux Read input device demo