#include <stdio.h>
#include <X11/X.h>
#include <X11/extensions/Xinerama.h>

int main()
{
	int evbase, errbase, major, minor;
	int have_xine = 0;
	Display *dpy;
	
	dpy = XOpenDisplay(NULL);
	
	if (!XineramaQueryExtension(dpy, &evbase, &errbase)) {
		printf("No Xinerama extension.  Sorry mate.\n");
		exit(1);
	}
	printf("XineramaQueryExtension: evbase=%d errbase=%d\n", evbase, errbase);
	
	XineramaQueryVersion(dpy, &major, &minor);
	printf("Found Xinerama version %d.%d\n", major, minor);

	have_xine = XineramaIsActive(dpy);
	printf("Xinerama %s active\n", have_xine ? "is":"isn't");

	if (have_xine) {
		XineramaScreenInfo *inf;
		int nheads, i;
		
		inf = XineramaQueryScreens(dpy, &nheads);
		printf("We have %d Xinerama-managed heads\n", nheads);

		for (i=0; i<nheads; i++) {
			printf("\nHead %d:\n", i+1);
			printf("\tXinerama screen number:\t%d (hopefully should be %d)\n", inf[i].screen_number, i);
			printf("\tTop left corner:\t(%d, %d)\n", inf[i].x_org, inf[i].y_org);
			printf("\tBottom right corner:\t(%d, %d)\n", inf[i].x_org + inf[i].width, inf[i].y_org + inf[i].height);
		}
	}
}