/* prints out details about screens connected to this X display
 * compile with:
 *   gcc -o enum-displays enum-displays.c `pkg-config gdk-2.0 --cflags --libs`
 */
#include <gdk/gdk.h>

int
main(int argc,
     char **argv)
{
    GdkDisplay *gdpy;
    gint i, j, nscreens, nmonitors;
    GdkScreen *gscreen;
    gchar *display_name;
    GdkRectangle geom;
    
    gdk_init(&argc, &argv);
    
    gdpy = gdk_display_get_default();
    nscreens = gdk_display_get_n_screens(gdpy);
    g_print("This display has %d screen(s).\n\n", nscreens);
    
    for(i = 0; i < nscreens; ++i) {
        gscreen = gdk_display_get_screen(gdpy, i);
        
        g_print("Screen %d:\n", i);
        
        display_name = gdk_screen_make_display_name(gscreen);
        g_print("  Name:  %s\n  Size: %dx%d\n", display_name,
                gdk_screen_get_width(gscreen), gdk_screen_get_height(gscreen));
        g_free(display_name);
        
        nmonitors = gdk_screen_get_n_monitors(gscreen);
        g_print("  %d monitor(s):\n", nmonitors);
        for(j = 0; j < nmonitors; ++j) {
            gdk_screen_get_monitor_geometry(gscreen, j, &geom);
            g_print("    Monitor %d: %dx%d+%d+%d\n", j, geom.width, geom.height,
                    geom.x, geom.y);
        }
    }
    
    return 0;
}