Mine

#include <stdio.h>#include <stdlib.h>#include <X11/Xlib.h>#include <X11/keysym.h>#include <X11/Intrinsic.h>Display *display;void sendsym(KeySym sym){  Window focus = 0;  int revert = 0;  XKeyEvent event;  XGetInputFocus(display, &focus, &revert);  event.display = display;  event.window = focus;  event.subwindow = None;  event.time = CurrentTime;  event.x = 1;  event.y = 1;  event.x_root = 1;  event.y_root = 1;  event.same_screen = 1;  event.state = 0;  event.keycode = sym;  event.type = KeyPress;  XSendEvent(event.display, event.window,1, KeyPressMask,             (XEvent *)&event);  event.type = KeyRelease;  XSendEvent(event.display, event.window,1, KeyReleaseMask,             (XEvent *)&event);}int main(int argc, char *argv[]){  char *display_name;  XrmInitialize();  display_name = XDisplayName(NULL);  display = XOpenDisplay(display_name);  if (display == NULL)  {    perror("Error opening display");    exit(EXIT_FAILURE);  }  sendsym(XK_Up);  XFlush(display);  XCloseDisplay(display);  return EXIT_SUCCESS;}