messagebox(NULL, "PuTTY Fatal Error", msg, string_width("REASONABLY LONG LINE OF TEXT FOR BASIC SANITY"), "OK", 'o', 1, 1, NULL);
fatal_message_box(NULL, msg);
void fatalbox(char *p, ...){    va_list ap;    char *msg;    va_start(ap, p);    msg = dupvprintf(p, ap);    va_end(ap);    messagebox(NULL, "PuTTY Fatal Error", msg,               string_width("REASONABLY LONG LINE OF TEXT FOR BASIC SANITY"),               "OK", 'o', 1, 1, NULL);    sfree(msg);    cleanup_exit(1);}