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Text File | 1989-06-01 | 8.4 KB | 204 lines | [TEXT/MPS ] |
- /*------------------------------------------------------------------------------
- #
- # Apple Macintosh Developer Technical Support
- #
- # MultiFinder-Aware Simple Sample Application
- #
- # Sample
- #
- # Sample.h - Rez and C Include Source
- #
- # Copyright © 1989 Apple Computer, Inc.
- # All rights reserved.
- #
- # Versions:
- # 1.00 08/88
- # 1.01 11/88
- # 1.02 04/89
- # 1.03 06/89
- #
- # Components:
- # Sample.p June 1, 1989
- # Sample.c June 1, 1989
- # Sample.a June 1, 1989
- # Sample.inc1.a June 1, 1989
- # SampleMisc.a June 1, 1989
- # Sample.r June 1, 1989
- # Sample.h June 1, 1989
- # PSample.make June 1, 1989
- # CSample.make June 1, 1989
- # ASample.make June 1, 1989
- #
- # Sample is an example application that demonstrates how to
- # initialize the commonly used toolbox managers, operate
- # successfully under MultiFinder, handle desk accessories,
- # and create, grow, and zoom windows.
- #
- # It does not by any means demonstrate all the techniques
- # you need for a large application. In particular, Sample
- # does not cover exception handling, multiple windows/documents,
- # sophisticated memory management, printing, or undo. All of
- # these are vital parts of a normal full-sized application.
- #
- # This application is an example of the form of a Macintosh
- # application; it is NOT a template. It is NOT intended to be
- # used as a foundation for the next world-class, best-selling,
- # 600K application. A stick figure drawing of the human body may
- # be a good example of the form for a painting, but that does not
- # mean it should be used as the basis for the next Mona Lisa.
- #
- # We recommend that you review this program or TESample before
- # beginning a new application.
- ------------------------------------------------------------------------------*/
-
- /* These #defines correspond to values defined in the Pascal source code.
- Sample.c and Sample.r include this file. */
-
- /* Determining an application's minimum size to request from MultiFinder depends
- on many things, each of which can be unique to an application's function,
- the anticipated environment, the developer's attitude of what constitutes
- reasonable functionality and performance, etc. Here is a list of some things to
- consider when determining the minimum size (and preferred size) for your
- application. The list is pretty much in order of importance, but by no means
- complete.
-
- 1. What is the minimum size needed to give almost 100 percent assurance
- that the application won't crash because it ran out of memory? This
- includes not only things that you do have direct control over such as
- checking for NIL handles and pointers, but also things that some
- feel are not so much under their control such as QuickDraw and the
- Segment Loader.
-
- 2. What kind of performance can a user expect from the application when
- it is running in the minimum memory configuration? Performance includes
- not only speed in handling data, but also things like how many documents
- can be opened, etc.
-
- 3. What are the typical sizes of scraps [is a boy dog] that a user might
- wish to work with when lauching or switching to your application? If
- the amount of memory is too small, the scrap may get lost [will have
- to be shot]. This can be quite frustrating to the user.
-
- 4. The previous items have concentrated on topics that tend to cause an
- increase in the minimum size to request from MultiFinder. On the flip
- side, however, should be the consideration of what environments the
- application may be running in. There may be a high probability that
- many users with relatively small memory configurations will want to
- avail themselves of your application. Or, many users might want to use it
- while several other, possibly related/complementary applications are
- running. If that is the case, it would be helpful to have a fairly
- small minimum size.
-
- So, what did we decide on Sample? First, Sample has little risk of
- running out of memory once it starts. Second, performance isn't much
- of an issue since it doesn't do much and multiple windows are not
- allowed. Third, there are no edit operations in Sample itself, so we
- just want to provide enough space for a reasonable scrap to survive
- between desk accessory launches. Lastly, Sample should intrude as little
- as possible, so the effort should be towards making it as small as possible.
- We looked at some heap dumps while the application was running under
- various partition sizes. With a size of 23K, there was approximately
- 8-9K free, which is a good 'slop' factor in an application like this
- which doesn't do much, but where we'd still like the scrap to survive
- most of the time. */
-
- #define kMinSize 23 /* application's minimum size (in K) */
-
- /* We made the preferred size bigger than the minimum size by 12K, so that
- there would be even more room for the scrap, FKEYs, etc. */
-
- #define kPrefSize 35 /* application's preferred size (in K) */
-
- #define rMenuBar 128 /* application's menu bar */
- #define rAboutAlert 128 /* about alert */
- #define rUserAlert 129 /* error user alert */
- #define rWindow 128 /* application's window */
- #define rStopRect 128 /* rectangle for Stop light */
- #define rGoRect 129 /* rectangle for Go light */
-
- /* kSysEnvironsVersion is passed to SysEnvirons to tell it which version of the
- SysEnvRec we understand. */
-
- #define kSysEnvironsVersion 1
-
- /* kOSEvent is the event number of the suspend/resume and mouse-moved events sent
- by MultiFinder. Once we determine that an event is an osEvent, we look at the
- high byte of the message sent to determine which kind it is. To differentiate
- suspend and resume events we check the resumeMask bit. */
-
- #define kOSEvent app4Evt /* event used by MultiFinder */
- #define kSuspendResumeMessage 1 /* high byte of suspend/resume event message */
- #define kResumeMask 1 /* bit of message field for resume vs. suspend */
- #define kMouseMovedMessage 0xFA /* high byte of mouse-moved event message */
- #define kNoEvents 0 /* no events mask */
-
- /* The following constants are used to identify menus and their items. The menu IDs
- have an "m" prefix and the item numbers within each menu have an "i" prefix. */
-
- #define mApple 128 /* Apple menu */
- #define iAbout 1
-
- #define mFile 129 /* File menu */
- #define iNew 1
- #define iClose 4
- #define iQuit 12
-
- #define mEdit 130 /* Edit menu */
- #define iUndo 1
- #define iCut 3
- #define iCopy 4
- #define iPaste 5
- #define iClear 6
-
- #define mLight 131 /* Light menu */
- #define iStop 1
- #define iGo 2
-
- /* 1.01 - kTopLeft - This is for positioning the Disk Initialization dialogs. */
-
- #define kDITop 0x0050
- #define kDILeft 0x0070
-
- /* 1.01 - kMinHeap - This is the minimum result from the following
- equation:
-
- ORD(GetApplLimit) - ORD(ApplicZone)
-
- for the application to run. It will insure that enough memory will
- be around for reasonable-sized scraps, FKEYs, etc. to exist with the
- application, and still give the application some 'breathing room'.
- To derive this number, we ran under a MultiFinder partition that was
- our requested minimum size, as given in the 'SIZE' resource. */
-
- #define kMinHeap 21 * 1024
-
- /* 1.01 - kMinSpace - This is the minimum result from PurgeSpace, when called
- at initialization time, for the application to run. This number acts
- as a double-check to insure that there really is enough memory for the
- application to run, including what has been taken up already by
- pre-loaded resources, the scrap, code, and other sundry memory blocks. */
-
- #define kMinSpace 8 * 1024
-
- /* kExtremeNeg and kExtremePos are used to set up wide open rectangles and regions. */
-
- #define kExtremeNeg -32768
- #define kExtremePos 32767 - 1 /* required to address an old region bug */
-
- /* these #defines are used to set enable/disable flags of a menu */
-
- #define AllItems 0b1111111111111111111111111111111 /* 31 flags */
- #define NoItems 0b0000000000000000000000000000000
- #define MenuItem1 0b0000000000000000000000000000001
- #define MenuItem2 0b0000000000000000000000000000010
- #define MenuItem3 0b0000000000000000000000000000100
- #define MenuItem4 0b0000000000000000000000000001000
- #define MenuItem5 0b0000000000000000000000000010000
- #define MenuItem6 0b0000000000000000000000000100000
- #define MenuItem7 0b0000000000000000000000001000000
- #define MenuItem8 0b0000000000000000000000010000000
- #define MenuItem9 0b0000000000000000000000100000000
- #define MenuItem10 0b0000000000000000000001000000000
- #define MenuItem11 0b0000000000000000000010000000000
- #define MenuItem12 0b0000000000000000000100000000000
-