Как определить все мониторы и их разрешения

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

int main()
{
    Display* display = XOpenDisplay(NULL);
    if (!display) {
        fprintf(stderr, "XOpenDisplay() fails\n");
        return 1;
    }
    int xineramaScreenCount;
    if (XineramaIsActive(display)) {
        XineramaScreenInfo* xineramaScreenInfo =
                     XineramaQueryScreens(display, &xineramaScreenCount);
        printf("Screen count: %d\n", xineramaScreenCount);
        for (int i = 0; i < xineramaScreenCount; i++) {
            printf("Screen #%d: (%d, %d) x (%d, %d)\n",
                   i, xineramaScreenInfo[i].x_org, xineramaScreenInfo[i].y_org,
                   xineramaScreenInfo[i].width, xineramaScreenInfo[i].height);
        }
        XFree(xineramaScreenInfo);
    } else {
        xineramaScreenCount = XScreenCount(display);
        printf("Screen count: %d\n", xineramaScreenCount);
        for (int i = 0; i < xineramaScreenCount; i++) {
            Screen* screen = ScreenOfDisplay(display, i);
            printf("Screen #%d: (0, 0) x (%d, %d)\n",
                    i, screen->width, screen->height);
        }
    }
    return 0;
}

gcc -o x x.c -std=c99 -lX11 -lXinerama