1 #include <errno.h>
2 #include <fcntl.h>
3 #include <linux/input.h>
4 #include <stdint.h>
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <string.h>
8 #include <sys/ioctl.h>
9 #include <unistd.h>
10
sendevent(int fd,int type,int code,int value)11 static void sendevent(int fd, int type, int code, int value)
12 {
13
14 struct input_event event;
15 ssize_t ret;
16
17 memset(&event, 0, sizeof(event));
18 event.type = type;
19 event.code = code;
20 event.value = value;
21 ret = write(fd, &event, sizeof(event));
22 if(ret < (ssize_t) sizeof(event)) {
23 fprintf(stderr, "write event failed, %s\n", strerror(errno));
24 }
25 }
26
main(int argc,char * argv[])27 int main(int argc, char *argv[])
28 {
29 int fd;
30 int version;
31
32 fd = open("/dev/input/virtkey", O_RDWR);
33 if(fd < 0) {
34 fprintf(stderr, "could not open %s\n", "/dev/input/virtkey");
35 return 1;
36 }
37 if (ioctl(fd, EVIOCGVERSION, &version)) {
38 fprintf(stderr, "could not get driver version for %s, %s\n", argv[optind], strerror(errno));
39 return 1;
40 }
41
42 sendevent(fd, 1, 125, 1); //win
43 sendevent(fd, 1, 31, 1); //S
44
45 usleep(10000);
46
47 sendevent(fd, 1, 31, 0);
48 sendevent(fd, 1, 125, 0);
49 sendevent(fd, 0, 0, 0);
50
51 close(fd);
52
53 return 0;
54 }
55