Path: utzoo!attcan!uunet!samsung!usc!snorkelwacker!bloom-beacon!primerd!ENI!ENS!J.COOK
From: J.COOK@ENS.Prime.COM
Newsgroups: comp.sys.mac.programmer
Subject: Re: Drawing in the menu bar (AGAIN)
Message-ID: <1232500004@ENS.Prime.COM>
Date: 5 Aug 90 23:37:00 GMT
References: <31@<Jul>
Lines: 50
Nf-ID: #R:<Jul:-3100:ENS:1232500004:000:1460
Nf-From: ENS.Prime.COM!J.COOK    Aug  5 23:37:00 1990


jjoshua@remus.rutgers.edu asked "Drawing in the menu bar (AGAIN)

There is a simple basic answer regarding how to draw in the menu bar.
Look at the sample program "Flying Line" in "Macintosh Programming Primer"
by Mark & Reed.

They create a window "gLineWindow" that is black and occupies the entire
screen including the menubar.  Don't send the Apple Thought Police after
me for this - see Mark & Reed.

#define NIL_POINTER     0L
#define MOVE_TO_FRONT   -1L
#define NIL_STRING      "\p"
#define NIL_TITLE       NIL_STRING
#define VISIBLE         TRUE
#define NO_GO_AWAY      FALSE
#define NIL_REF_CON     NIL_POINTER

WindowPtr     gLineWindow;
int           gOldMBarHeight;

WindowInit()
{

Rect          totalRect, mBarRect;
RgnHandle     mBarRgn;

gOldMBarHeight = MBarHeight;
MBarHeight = 0;
gLineWindow = NewWindow( NIL_POINTER, &(screenBits.bounds),
    NIL_TITLE, VISIBLE, plainDBox, MOVE_TO_FRONT, NO_GO_AWAY,
    NIL_REF_CON );
SetRect( &mBarRect, screenBits.bounds.left, screenBits.bounds.top,
    screenBits.bounds.right, screenBits.bounds.top+gOldMBarHeight);
mBarRgn = NewRgn();
RectRgn( mBarRgn, &mBarRect );
UnionRgn( gLineWindow->visRgn, mBarRgn, gLineWindow->visRgn );
DisposeRgn( mBarRgn );

SetPort( gLineWindow );
FillRect( &(gLineWindow->portRect), black );
}

Note that before the program exits, it set MBarHeight back to the value saved
in gOldMBarHeight.

Jim Cook
J.COOK@ENS.Prime.COM
"Just my misinformation.  Prime has it's own."