/*
 * $> yum install gtk2-devel
 * $> gcc -g -Wall $(pkg-config --cflags --libs gtk+-2.0) test-screens.c -o test-screens
 */

#include <stdio.h>
#include <gtk/gtk.h>

int
main(int argc, char **argv)
{
  GdkDisplay *display;
  GdkScreen *screen;
  int n_screens, i;

  gtk_init (&argc, &argv);

  display = gdk_display_get_default();

  n_screens = gdk_display_get_n_screens(display);

  for (i = 0; i < n_screens; i++)
    {
      int n_monitors, j;

      screen = gdk_display_get_screen(display, i);

      printf("Screen %d == %dx%d\n", i,
             gdk_screen_get_width(screen),
             gdk_screen_get_height(screen));

      n_monitors = gdk_screen_get_n_monitors(screen);

      for (j = 0; j < n_monitors; j++)
        {
          GdkRectangle geo;

          gdk_screen_get_monitor_geometry(screen, i, &geo);

          printf("Screen %d, Monitor %d == %dx%d\n",
                 i, j, geo.width, geo.height);
        }
    }

  return 0;
}