Gestalt

Psychtoolbox › PsychBasic

gestaltBits = Gestalt(selector)

OS X

Gestalt calls the eponymous Macintosh system function Gestalt, a
general-purpose function that reports on particular features of your
computer. Gestalt accepts "selector", a four-character string identifying
the feature you wish to query and returns "gestaltBits", a 32-element
logical array holding the result of the query.

For example:

gestaltbits = gestalt('sysa')


For a list of four-character selector codes, see the Carbon Gestalt
Manager Reference
web http://developer.apple.com/ ;

If the call to Carbon Gestalt returns an error then MATLAB Gestalt returns
the error code in a double instead of gestaltBits in a logical array.
Gestalt error codes are:

gestaltUnknownErr -5550 An unknown error.
gestaltUndefSelectorErr -5551 An undefined selector was
gestaltDupSelectorErr -5552 You tried to add an entry
gestaltLocationErr -5553 The gestalt function ptr was not in the

In MATLAB 6.0 and greater the Psychtoolbox supplies Gestalt. Gestalt is a
work-alike implementation of the identically-named function previously
provided by MATLAB. The only differences between Psychtoolbox Gestalt and
MATLAB Gestalt are:

1. Psychtoolbox Gestalt returns a struct holding information about



2. Psychtoolbox Gestalt will return the error code in the event of any

OS 9

In MATLAB versions below 6.0 MATLAB supplies Gestalt.

WINDOWS

Gestalt does not exist in Windows.

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See also: Screen('Computer?'), MacModelName, AppleVersion