/*
 * Set an XAtom to a single text value.
 * gcc xsetatom.c -lX11 -o xsetatom
 */
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char** argv) {
	Display* dpy;
	Window root;
	Atom atom;
	XTextProperty prop;

	if(argc < 3) {
		printf("Usage: xsetatom <name> <value>\n");
		exit(EXIT_FAILURE);
	}

	dpy = XOpenDisplay(0);
	if(dpy == None) {
		fprintf(stderr, "Could not open display\n");
		exit(EXIT_FAILURE);
	}
	root = DefaultRootWindow(dpy);
	atom = XInternAtom(dpy, argv[1], False);
	XStringListToTextProperty(&argv[2], 1, &prop);
	XSetTextProperty(dpy, root, &prop, atom);

	XSync(dpy, False);
	XCloseDisplay(dpy);

	exit(EXIT_SUCCESS);
}