/*

    File:       HideMenuBar.c

    Contains:   This snippet shows how to hide the menu bar by simply   

                creating a window with a visRgn that includes the       

                entire main screen's gray region and its menu bar.

    Written by: Edgar Lee   

    Copyright:  Copyright © 1992-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                8/9/1999    Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

                                            HideMenuBar() Is now included in the OS in

                                            MenusLib

*/

#include <Quickdraw.h>

#include <Dialogs.h>

#include <Fonts.h>

#include <Processes.h>

/* Global Variable Definitions */

WindowPtr   gWindow;

void initMac();

//void HideMenuBar();

void HideIt();

void drawWindow();

void doEventLoop();

void main(void)

{

    initMac();

    HideMenuBar();

    doEventLoop();

}

void initMac()

{

    MaxApplZone();

    InitGraf( &qd.thePort );

    InitFonts();

    InitWindows();

    InitMenus();

    TEInit();

    InitDialogs( nil );

    InitCursor();

    FlushEvents( 0, everyEvent );

}

/*void HideMenuBar()

{

    Rect    rect;

    gWindow = NewCWindow( 0L, &rect, "\p", false, plainDBox,

                            (WindowPtr)-1L, true, 0L );                     

    MoveWindow( gWindow, qd.screenBits.bounds.left, qd.screenBits.bounds.top, true );

    SizeWindow( gWindow, qd.screenBits.bounds.right - qd.screenBits.bounds.left,

                        qd.screenBits.bounds.bottom - qd.screenBits.bounds.top, false );

    SetPort( gWindow );

    ShowWindow( gWindow );

    TextMode( kFontIDGeneva );

    TextSize( 9 );

    TextMode( srcXor );

}*/

void HideIt()

{   

    /****************************************************/

    /* Set the window's visRgn to include the menu bar. */

    /****************************************************/

    RectRgn( (*gWindow).visRgn, &qd.screenBits.bounds );

    InvalRect( &qd.screenBits.bounds );

    /*************************************************/

    /* Set the global MBarHeight to 0 to prevent any */

    /*  other apps from writing to the menu bar.     */

    /*************************************************/

    *((short *)0xbaa) = 0;

}

void drawWindow()

{

    ForeColor( redColor );

    PaintRect( &qd.screenBits.bounds );

    MoveTo( 15, 15 );

    DrawString( "\pPress any key to quit." );

}

void doEventLoop()

{

    EventRecord event;

    WindowPtr   window;

    short       clickArea;

    Rect        screenRect;

    for (;;)

    {

        if (WaitNextEvent( everyEvent, &event, 0, nil ))

        {

            if (event.what == mouseDown)

            {

                clickArea = FindWindow( event.where, &window );

                if (clickArea == inDrag)

                {

                    screenRect = (**GetGrayRgn()).rgnBBox;

                    DragWindow( window, event.where, &screenRect );

                }

                else if (clickArea == inContent)

                {

                    if (window != FrontWindow())

                        SelectWindow( window );

                }

                else if (clickArea == inGoAway)

                    if (TrackGoAway( window, event.where ))

                        return;

            }

            else if (event.what == keyDown || event.what == autoKey)

                ExitToShell();

            else if (event.what == updateEvt)

            {

                window = (WindowPtr)event.message;  

                SetPort( window );

                BeginUpdate( window );

                drawWindow();

                EndUpdate( window );

            }

            else if (event.what == activateEvt)

            {

                HideIt();

            }

        }

    }

}