Simulate mouse motion on linux wayland

Question

I receive xy data from my network and i would like to control the mouse position using linux on wayland.

I've seen many source codes using X libs or X apps but it will not work on wayland. I also have a look on libinput and evedev but i don't find any code sample about how to create/simulate mouse.

I haven't tested the solution yet, but thank you for post, I ran into the same problem in our jUnit tests.. — Leo Ufimtsev
– Leo Ufimtsev, Commented May 4, 2017 at 16:16

Erwan Douaille · Accepted Answer · 2016-04-06 11:35:09Z

7

Uinput is the answer.

void initMouse(){
  fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
  ioctl(fd, UI_SET_EVBIT, EV_KEY);
  ioctl(fd, UI_SET_KEYBIT, BTN_LEFT);
  ioctl(fd, UI_SET_EVBIT, EV_ABS);
  ioctl(fd, UI_SET_ABSBIT, ABS_X);
  ioctl(fd, UI_SET_ABSBIT, ABS_Y);

  struct uinput_user_dev uidev;
  memset(&uidev,0,sizeof(uidev));
  snprintf(uidev.name,UINPUT_MAX_NAME_SIZE,"HolusionMouse");
  uidev.id.bustype = BUS_USB;
  uidev.id.version = 1;
  uidev.id.vendor = 0x1;
  uidev.id.product = 0x1;
  uidev.absmin[ABS_X] = 0;
  uidev.absmax[ABS_X] = 1080;
  uidev.absmin[ABS_Y] = 0;
  uidev.absmax[ABS_Y] = 1080;
  write(fd, &uidev, sizeof(uidev));
  ioctl(fd, UI_DEV_CREATE);

  usleep(100000);
}

And update:

struct input_event ev[2], evS;
 memset(ev, 0, sizeof(ev ));
 ev[0].type = EV_ABS;
 ev[0].code = ABS_X;
 ev[0].value = 100;
 ev[1].type = EV_ABS;
 ev[1].code = ABS_Y;
 ev[1].value = 100;
 write(fd, ev, sizeof(ev));

 memset(&evS,0,sizeof(struct input_event));
 evS.type = EV_SYN;
 write(fd, &evS, sizeof(struct input_event));

 usleep(10000);

answered Apr 6, 2016 at 11:35

Erwan Douaille

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2 Comments

Jewenile Over a year ago

Any idea how to perform such task without the necessity of using external libraries/tools?

Erwan Douaille Over a year ago

@Jewenile I don't think so. UInput has the avantage to work for X and wayland.

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