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Path: utzoo!mnetor!seismo!ut-sally!ut-ngp!jdm
From: jdm@ut-ngp.UUCP (Jim Meiss)
Newsgroups: comp.sys.mac
Subject: ZoomWindows...Help Wanted
Message-ID: <4316@ut-ngp.UUCP>
Date: Mon, 17-Nov-86 21:32:03 EST
Article-I.D.: ut-ngp.4316
Posted: Mon Nov 17 21:32:03 1986
Date-Received: Mon, 17-Nov-86 23:04:57 EST
Reply-To: jdm@ngp.UUCP (James Meiss)
Distribution: world
Organization: UTexas Computation Center, Austin, Texas
Lines: 88
Keywords: zoomwindow, LightSpeed C


	I am a novitiate both to C and to MacIntosh programing, so
please pardon the question if it turns out to be trivial.

	I would like to implement the zoom box on a window using
Lightspeed C v. 1.02 on a MacPlus. According to Tech Note #57 (the only
thing I have seen written on the subject) one defines  a window of type 8. This indeed gives the zoombox in the window. Next I used the enclosed code fragment to try to get the zoom.
	My window that zooms out okay, but will not zoom in. How come??? Perhaps my problem is in the definition of the functions TrackBox
and ZoomWindow... 

	Another question: Is it possible to set the size that the window zooms to?

-------------------------------------
/* Code Fragment for Zoom Windows */

enum {
	inDesk,
	inMenuBar,
	inSysWindow,
	inContent,
	inDrag,
	inGrow,
	inGoAway,
	inZoomIn,
	inZoomOut
};
.
.
pascal Boolean 		*TrackBox() = 0xA83B; 
pascal void 		*ZoomWindow() = 0xA83A;
.
.
.

main()
{

	WindowPtr		whichWindow;
	EventRecord		myEvent;
	
	InitGraf(&thePort);		
	InitFonts();
	InitWindows();
	InitMenus();
	TEInit();
	
	for(;;)  /* forever */
	{

	SystemTask();

	if (GetNextEvent(everyEvent, &myEvent)) 
	{
		switch(myEvent.what)
		{
		case mouseDown:
		switch (FindWindow( myEvent.where, &whichWindow ))
		{
		.
		.
			case inZoomIn:
			   if(TrackBox(whichWindow,myEvent.where,inZoomIn))
				ZoomWindow(whichWindow,inZoomOut,0);
			   break;
			case inZoomOut:
			   if(TrackBox(whichWindow,myEvent.where,inZoomOut))
				ZoomWindow(whichWindow,inZoomOut,0);
			   break;
			default: 
			   break;
		} /* end switch findwindow */
		break;
		.
		.
		default:
			break;
		}  /* end switch which event */
		.
		.
	} /* end if event */
	} /* end forever */
} /* end main */
-------------------------------------]

					Thanks for your help,

					Jim Meiss
					ut-npg!jdm