Apple System Software (Ma-Mz)
This chapter lists selector codes of which the meaning is documented and the first two characters of the selector code is in the Ma-Mz range.
malr (PowerTalk ext [1.0?], part of PowerTalk)
gestaltSMPMailerVersion
Returns the SMP Mailer version as INTEGER. Returns zero if not
present and available.
#define gestaltSMPMailerVersion 'malr' /* SMP Mailer version */
mbeh (System? [8.1?])
gestaltMediaBay &AS29
Returns the media bay driver type.
enum {
#define gestaltMediaBay 'mbeh'
gestaltMBLegacy = 0, /* media bay support in PCCard 2.0 */
gestaltMBSingleBay = 1, /* single bay media bay driver */
gestaltMBMultipleBays = 2}; /* multi-bay media bay driver */
mbxa (PowerTalk Manager ext [1.5?])
gestaltOCEMailboxAPIAttr &AD32
Returns information about the capabilities of the Mailbox.
enum {
#define gestaltOCEMailboxAPIAttr 'mbxa'
gestaltMailboxAPIPresent = 0x01, /* basic operations on Mailbox
and Letter Contents avail. */
gestaltSupportsOutbox = 0x02, /* examine and act upon the
outbox possible */
gestaltSupportsErrorLog = 0x04 }; /* examine and act upon the
mailbox error log possible */
WARNING:
Unlike other selectors returning attributes, the responses are not bit
values, but bit masks.
menu (System? [8.5?])
gestaltMenuMgrAttr
Returns information about the PowerPC-native Menu Manager.
enum {
#define gestaltMenuMgrAttr 'menu' /* PPC Menu Mgr exists */
gestaltMenuMgrPresent = 1}; /* mask! */
mfdr (At Ease [1.0])
(System? [9.0])
gestaltMultipleUsersState
Returns MultiUserGestaltHandle (in Folders.h).
#define gestaltMultipleUsersState 'mfdr'
micn (System [6.0.4]) INF
gestaltMachineIcon
Returns an icon family resource ID for the current type of
Macintosh.
#define gestaltMachineIcon 'micn' /* machine ICON/cicn res ID */
NOTE:
It appears as if this selector always returns the ID of the generic
Macintosh icon (like in the Welcome screen), starting with System 7.5.
On a PowerBook 5300 with System 7.5.2 installed the icon ID is
returned for an icon showing a generic portable computer. (Rene Ros)
misc (System [6.0.5])
gestaltMiscAttr
Returns information about miscellaneous pieces of software or
hardware.
enum {
#define gestaltMiscAttr 'misc' /* miscellaneous attributes */
gestaltScrollingThrottle = 0,
gestaltBootGlobals = 1, /* Boot Globals &M02, obsolete? */
gestaltSquareMenuBar = 2};
WARNING:
The Gestalt function for this selector, at least as implemented by
System 7.5.3 and earlier, does not properly restore the D3 register
and returns a bogus value in it. (John Mancino)
mixd (CFM-68K Runtime Enabler ext [4.0])
(System? [7.1.2?])
gestaltMixedModeAttr
Returns information about the Mixed Mode Manager.
enum {
#define gestaltMixedModeAttr 'mixd' /* Mixed Mode Mgr attributes */
gestaltMixedModePowerPC = 0, /* true if Mixed Mode supports
PowerPC ABI calling
conventions &AS21 */
gestaltPowerPCAware = 0, /* old name for
gestaltMixedModePowerPC */
gestaltMixedModeCFM68K = 1, /* true if Mixed Mode supports
CFM-68K calling
conventions &AS21 */
gestaltMixedModeCFM68KHasTrap = 2, /* true if CFM-68K Mixed Mode
implements _MixedModeDispatch
(versions 1.0.1 and prior
did not) &AS21 */
gestaltMixedModeCFM68KHasState = 3}; /* SaveMixedModeState and
RestoreMixedModeState are
available &AT19 */
NOTE:
The name 'gestaltMixedModeVersion' (as used in IM OS Utilites and
IM PowerPC System Software) is incorrect. It may be listed in
Gestalt header files for a limited time for backwards compatibility.
(Rene Ros)
mnam (System? [8.6?])
gestaltUserVisibleMachineName
Returns a StringPtr to a user visible machine name.
#define gestaltUserVisibleMachineName 'mnam'
mmap (System? [Blue Box])
gestaltMemoryMapAttr &AS29
Returns information about the Memory map.
enum {
#define gestaltMemoryMapAttr 'mmap' /* Memory map type */
gestaltMemoryMapSparse = 0}; /* Sparse memory is on */
mmu (System [6.0.4])
gestaltMMUType
Returns a value that indicates the type of MMU currently installed,
if any.
enum {
#define gestaltMMUType 'mmu ' /* MMU Type */
gestaltNoMMU = 0, /* no MMU */
gestaltAMU = 1, /* AMU */
gestalt68851 = 2, /* 68851 MMU */
gestalt68030MMU = 3, /* built-in 68030 MMU */
gestalt68040MMU = 4, /* built-in 68040/68LC040 &S01 */
gestaltEMMU1 = 5}; /* Emulated MMU type 1, PowerPC MMU &AS05 */
NOTE:
You should also use this selector to test for the existence of
_MemoryDispatch if your code runs before system patches are applied
on machines of which the ROM implements _MemoryDispatch but the
machine doesn't have a MMU. This may happen with a Mac LC, whose
ROM is derived from the Macintosh IIci. &AT09
mpsc (System? [9.0])
gestaltMPCallableAPIsAttr
Returns a bitmap of toolbox/OS managers that can be called from
MPLibrary MPTasks
enum {
#define gestaltMPCallableAPIsAttr 'mpsc'
gestaltMPFileManager = 0, /* File Manager calls can be made */
gestaltMPDeviceManager = 1}; /* Synchronous Device Manager calls can
be made */
mtcp (MacTCP cp [1.1])
(Open Tpt MacTCP [3.0a2])
gestaltMacTCPVersion? &AD01
Returns the version of MacTCP, if opened, as index-value. If MacTCP is
not opened a value of 0 is returned.
#define gestaltMacTCPVersion? 'mtcp'
======================================================================
MacTCP responses
======================================================================
Version Response Remarks
----------------------------------------------------------------------
1.0 - 1.0.3 N/A Doesn't install selector.
1.1 and later 0 MacTCP not opened.
1.1 1
1.1.1 2
2.0.x 3
3.0 4 Part of Open Transport 1.0
----------------------------------------------------------------------
WARNING:
Rumour goes this selector is not installed with A/UX. Versions of
MacTCP and A/UX involved are unknown.
NOTE:
No constants are defined by the documentation.
