event-time.tv_sec， event-type， 0}; const char* file_name = argc == 2 ? argv[1] : /dev/input/event0; int fd = open(file_name， event-code， event-time.tv_sec， event-time.tv_sec， argv[1]); ， #include stdio.h #include stdlib.h #include linux/input.h #include sys/types.h #include sys/stat.h #include fcntl.h #include unistd.h #include errno.h #include sys/time.h struct timeval begin_time; int reboot_done= 0; static void show_event(struct input_event* event) { int current_time = event-time.tv_sec * 1000 + (int) event-time.tv_usec/1000; { if( event-value == 0 ) { begin_time.tv_sec = 0; begin_time.tv_usec = 0; reboot_done= 0; printf(%d %d %d [%d.%d]\n， event-value。

event-type， event-value， char* argv[]) { struct input_event event = {{0}，(int) event-time.tv_usec/1000 ); printf(press release ! \n); } else if( event-value == 1 ) { begin_time.tv_sec = event-time.tv_sec; begin_time.tv_usec = event-time.tv_usec; printf(%d %d %d [%d.%d]\n， event。

Linux下用C代码实现读取按键事件的key code， event-type， event-value， event-code，(int) event-time.tv_usec/1000 ); } else if( event-value == 2 ) { if(event-time.tv_sec - begin_time.tv_sec = 4) { if(event-time.tv_usec - begin_time.tv_usec = 0) { if(reboot_done == 0) { printf(%d %d %d [%d.%d]\n， sizeof(event)); if(ret == sizeof(event)) { show_event(event); } } while(1); close(fd); } else printf(open filed %s \n， O_RDWR); if(fd 0) { do { int ret = read(fd，(int) event-time.tv_usec/1000 ); reboot_done = 1; printf(press long then 4 s \n); } } } } } } int main(int argc， event-code，。