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get-xkey.c (561B)

      1 #include <stdio.h>
      2 #include <stdlib.h>
      3 #include <X11/Xlib.h>
      4  
      5 int main(void) {
      6 	Display *dpy;
      7 	Window win;
      8 	XEvent e;
      9 	int s;
     10  
     11 	dpy = XOpenDisplay(NULL);
     12 	if (dpy == NULL) {
     13 		fprintf(stderr, "Cannot open display\n");
     14 		exit(1);
     15 	}
     16  
     17 	s = DefaultScreen(dpy);
     18 	win = XCreateSimpleWindow(dpy, RootWindow(dpy, s), 10, 10, 100, 100, 0, 0, 0);
     19 	XSelectInput(dpy, win, ExposureMask | KeyPressMask);
     20 	XMapWindow(dpy, win);
     21  
     22 	while (1) {
     23 		XNextEvent(dpy, &e);
     24 		if (e.type == KeyPress)
     25 			printf("0x%x\n",e.xkey.keycode);
     26 	}
     27  
     28    XCloseDisplay(dpy);
     29    return 0;
     30 }