#pragma once

#include <Retrace.h>

typedef struct xQHdr {      

    long            qFlags;

    struct xthing   *qHead;

    struct xthing   *qTail;

    short           qEntries;

} xQHdr;

typedef Boolean (*updateProc)(struct xthing *xtp);

typedef struct xthing {

    VBLTask         timer;          /* update time */

    QElem           *xqel;          /* link in xthing queue */

    short           prime;          /* number of miliseconds between runs */

    xQHdr           *uQueueRef;     /* handy place to put your gum */

    long            flags;          /* indicating stuff */

    long            refcon;

    updateProc      updtProc;

    ProcPtr         vTaskPtr;

} xthing;

void xInitQueueHeader(xQHdr *queue);

void xEnqueue(xthing *qel, xQHdr *queue);

void xDequeue(xthing *qel, xQHdr *queue);

#ifndef nil

#define nil ((void*)0L)

#endif