void make_cocoa_window()
{
    NSApplication *app = [NSApplication sharedApplication];
    [app setActivationPolicy: NSApplicationActivationPolicyRegular];
    NSMenu *menu_bar = [[NSMenu alloc] init];
    NSMenuItem *app_menu_item = [[NSMenuItem alloc] init];
    [menu_bar addItem:app_menu_item];
    app.mainMenu = menu_bar;
    NSMenu *app_menu = [[NSMenu alloc] init];
    NSMenuItem *quit_menu_item = [[NSMenuItem alloc] initWithTitle:@"Quit"
                                                            action:@selector(terminate:)
                                                     keyEquivalent:@"q"];
    [app_menu addItem:quit_menu_item];
    [app_menu_item setSubmenu:app_menu];
    [app activateIgnoringOtherApps:YES];


    NSWindow *window = nil;
    NSRect contentRet = NSMakeRect(0, 0, 1025, 768);
    { // create window
        window = [[NSWindow alloc] initWithContentRect:contentRet
                                             styleMask:NSTitledWindowMask
                                               backing:NSBackingStoreBuffered
                                                 defer:NO
                                                screen:nil];
        [window cascadeTopLeftFromPoint:NSMakePoint(20, 20)];
        [window setTitle:@"Lol Window"];
    }
    // show window
    [window makeKeyAndOrderFront:nil];
}