// the current set of messages to print 
static int twMessageKinds = TW_NO_MESSAGES;

void twSetMessages(int messages) {
    twMessageKinds = messages;
    // printf("set messages to %d\n", messages);
}

void twMessage(int messageKind, char* format, ...) {
    va_list ap;
    // printf("messages: %d %d %d\n",messageKind, twMessageKinds, messageKind & twMessageKinds);
    if(messageKind & twMessageKinds) {
        va_start(ap, format);
        vprintf(format,ap);
        va_end(ap);
    }
}