/*

    JustOvals.c

    CodeWarior version.

    This file provides a generic interface for writing a After Darkª graphics module.

    The function "main" is called by After Dark and passed four parameters:

        storage:    A Handle to memory you have allocated.

        blankRgn:   A region covering all screens.

        message:    A value indicating which function to call.

        params:     A pointer to a structure containing useful information.

    To use it, write the five routines:

    OSErr DoInitialize(Handle *storage, RgnHandle blankRgn, GMParamBlockPtr params);

    OSErr DoClose(Handle storage, RgnHandle blankRgn, GMParamBlockPtr params);

    OSErr DoBlank(Handle storage, RgnHandle blankRgn, GMParamBlockPtr params);

    OSErr DoDrawFrame(Handle storage, RgnHandle blankRgn, GMParamBlockPtr params);

    OSErr DoSetUp(RgnHandle blankRgn, short message, GMParamBlockPtr params);

    For more information, consult the programmer's section of the manual.

    The following people are all conspirators in this code:

        Patrick Beard

        Bruce Burkhalter

        Colin Glassey

        Andrew Armstrong

    ©1989-1995 Berkeley Systems, Inc.

 */

#include <QuickDraw.h>

#include "GraphicsModule_Types.h"

extern OSErr DoInitialize(Handle *storage, RgnHandle blankRgn, GMParamBlockPtr params);

extern OSErr DoClose(Handle storage,RgnHandle blankRgn,GMParamBlockPtr params);

extern OSErr DoBlank(Handle storage, RgnHandle blankRgn, GMParamBlockPtr params);

extern OSErr DoDrawFrame(Handle storage,RgnHandle blankRgn,GMParamBlockPtr params);

extern OSErr DoSetUp(RgnHandle blankRgn,short message,GMParamBlockPtr params);

pascal OSErr main(Handle *storage, RgnHandle blankRgn, short message, GMParamBlockPtr params)

{

    OSErr err=noErr;

    /* dispatch message to appropriate routine. */

    switch(message) {

        case Initialize:

            err = DoInitialize(storage, blankRgn, params);

            break;

        case Close:

            err = DoClose(*storage, blankRgn, params);

            break;

        case Blank:

            err = DoBlank(*storage, blankRgn, params);

            break;

        case DrawFrame:

            err = DoDrawFrame(*storage, blankRgn, params);

            break;

        /*  There are other messages that can be passed to you. We aren't going to handle them

            but I've included them to make your life simpler.

        case ModuleSelected:

            err=DoSelected(*storage, blankRgn, params);

            break;

        case DoAbout:

            err=DoAbout(*storage, blankRgn, params);

            break;

        */

        default:                            // Check to see if the user pressed a button

            if(message>=ButtonMessage) {

                err=DoSetUp(blankRgn, message, params);

            }

            break;

    } /* end switch */

    return err;

}