#define VNC_FLAG_STANDALONE (1 << 1)
#define VNC_FLAG_US_KBD     (1 << 2)
#define VNC_FLAG_SHOW_MOUSE (1 << 3)
#define VNC_FLAG_VIEW_ONLY  (1 << 4)

GtkWidget *vnc_open(char *hostname, int tcpport, unsigned long flags,
		    int debug_level);