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287 lines
9.6 KiB
XML
287 lines
9.6 KiB
XML
<?xml version="1.0" standalone="no"?>
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<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN">
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<article>
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<articleinfo>
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<author><firstname>Clifford</firstname><surname>Matthews</surname></author>
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<authorinitials>ctm</authorinitials>
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<title><function>Gestalt</function> under ROMlib</title>
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<abstract>
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<para>
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This article provides information about <function>Gestalt</function>
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under ROMlib. Since <application>Executor</application> and the
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Carbonless Copies Runtime System both use ROMlib, this information
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also applies to them.
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</para>
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</abstract>
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<copyright>
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<year>1999</year>
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<year>2002</year>
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<holder>Abacus Research & Development, Inc.</holder>
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</copyright>
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</articleinfo>
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<note>
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<para>
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The information in this paper is <emphasis>not</emphasis> built
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directly from the ROMlib source. It is provided as-is and is subject
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to change.
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</para>
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</note>
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<section>
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<title>Apple Selectors</title>
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<para>
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PageMaker 4.2 calls <function>Gestalt</function> with the
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<constant>gestaltAliasMgrAttr</constant> selector and if
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<function>Gestalt</function> returns <returnvalue>noErr</returnvalue>,
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proceeds to use the Alias Manager, even the response is
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<returnvalue>0</returnvalue>. PageMaker 4.2 will not use the Alias
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Manager if in this case <function>Gestalt</function> returns
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<returnvalue>gestaltUndefSelectorErr</returnvalue>. PageMaker 4.2's
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use of <function>Gestalt</function> doesn't appear to be within spec
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(IMVI), but that's just another difference where ROMlib has to do what
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the Mac does, rather than what the specifications suggest.
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</para>
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<para>
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MacInTax '93 does the same thing with the Edition Manager that
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PageMaker does with the Alias Manager. Claris Works does the same
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thing with Apple Events. After ARDI saw three instances of this
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behavior ARDI stopped keeping track. Because of such behavior, there
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are a number of selectors that ROMlib deliberately fails to recognize.
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ROMlib does this when its support for the queried functionality is
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incomplete. Here are the selectors that ROMlib deliberately fails to
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recognize:
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</para>
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<simplelist type="horiz" columns="3">
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<member><constant>gestaltAliasMgrAttr</constant></member>
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<member><constant>gestaltApplEventsAttr</constant></member>
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<member><constant>gestaltAppleTalkVersion</constant></member>
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<member><constant>gestaltAUXVersion</constant></member>
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<member><constant>gestaltConnMgrAttr</constant></member>
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<member><constant>gestaltCRMAttr</constant></member>
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<member><constant>gestaltCTBVersion</constant></member>
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<member><constant>gestaltDBAccessMgrAttr</constant></member>
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<member><constant>gestaltEasyAccessAttr</constant></member>
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<member><constant>gestaltEditionMgrAttr</constant></member>
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<member><constant>gestaltFontMgrAttr</constant></member>
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<member><constant>gestaltFXfrMgrAttr</constant></member>
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<member><constant>gestaltHardwareAttr</constant></member>
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<member><constant>gestaltHelpMgrAttr</constant></member>
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<member><constant>gestaltMiscAttr</constant></member>
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<member><constant>gestaltNotificatinMgrAttr</constant></member>
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<member><constant>gestaltNuBusConnectors</constant></member>
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<member><constant>gestaltOSAttr</constant></member>
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<member><constant>gestaltPopupAttr</constant></member>
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<member><constant>gestaltPowerMgrAttr</constant></member>
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<member><constant>gestaltPPCToolboxAttr</constant></member>
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<member><constant>gestaltResourceMgrAttr</constant></member>
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<member><constant>gestaltScriptCount</constant></member>
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<member><constant>gestaltScriptMgrVersion</constant></member>
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<member><constant>gestaltSerialAttr</constant></member>
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<member><constant>gestaltStdNBPAttr</constant></member>
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<member><constant>gestaltTermMgrAttr</constant></member>
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<member><constant>gestaltParityAttr</constant></member>
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<member><constant>gestaltVMAttr</constant></member>
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<member>'<literal>icmp</literal>'</member>
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<member>'<literal>sysa</literal>'</member>
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</simplelist>
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<para>
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ROMlib recognizes and returns information for these selectors:
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</para>
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<simplelist type="horiz" columns="3">
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<member><constant>gestaltDITLExtAttr</constant></member>
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<member><constant>gestaltFindFolderAttr</constant></member>
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<member><constant>gestaltFSAttr</constant></member>
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<member><constant>gestaltSoundAttr</constant></member>
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<member><constant>gestaltExtToolboxTable</constant></member>
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<member><constant>gestaltToolboxTable</constant></member>
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<member><constant>gestaltOSTable</constant></member>
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<member><constant>gestaltFPUType</constant></member>
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<member><constant>gestaltKeyboardType</constant></member>
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<member><constant>gestaltLogicalPageSize</constant></member>
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<member><constant>gestaltLogicalRAMSize</constant></member>
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<member><constant>gestaltLowMemorySize</constant></member>
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<member><constant>gestaltMMUType</constant></member>
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<member><constant>gestaltPhysicalRAMSize</constant></member>
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<member><constant>gestaltProcessorType</constant></member>
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<member><constant>gestaltQuickdrawVersion</constant></member>
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<member><constant>gestaltQuickdrawFeatures</constant></member>
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<member><constant>gestaltTimeMgrVersion</constant></member>
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<member><constant>gestaltVersion</constant></member>
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<member><constant>gestaltMachineIcon</constant></member>
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<member><constant>gestaltMachineType</constant></member>
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<member><constant>gestaltROMSize</constant></member>
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<member><constant>gestaltROMVersion</constant></member>
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<member><constant>gestaltSystemVersion</constant></member>
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<member><constant>gestaltTextEditVersion</constant></member>
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</simplelist>
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<para>
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ROMlib fails to recognize the following four selectors unless they are
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specifically enabled by the "pretend" options (Pretend Help, Pretend
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Edition, Pretend Script, Pretend Alias). The pretend options can be
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enabled in the preferences panel or via a configuration file.
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</para>
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<simplelist type="horiz" columns="3">
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<member><constant>gestaltHelpMgrAttr</constant></member>
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<member><constant>gestaltScriptMgrVersion</constant></member>
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<member><constant>gestaltEditionMgrAttr</constant></member>
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<member><constant>gestaltAliasMgrAttr</constant></member>
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</simplelist>
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<para>
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These two selectors are only recognized if the system version is set
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to 7.0 or higher:
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</para>
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<simplelist type="horiz" columns="3">
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<member><constant>gestaltStandardFileAttr</constant></member>
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<member><constant>gestaltApplEventsAttr</constant></member>
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</simplelist>
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</section>
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<section>
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<title>ARDI selectors</title>
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<para>
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ARDI has added one special <function>gestalt</function> selector,
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<constant>gestaltPHYSICAL</constant> ('<literal>MUL8</literal>'). It
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returns the address of a routine that behaves just like
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<function>Gestalt</function>, but provides access to a completely
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different set of tables. These tables contain information about the
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environment in which <application>Executor</application> is running
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instead the emulated environment that
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<application>Executor</application> provides.
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</para>
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<para>
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Example:
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</para>
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<programlisting>
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<![CDATA[
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int PhysicalGestalt (long selector, long *responsep)
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{
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int retval;
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pascal int (*physfp) (long sel, long *responsep);
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retval = Gestalt ('MUL8', (void *) &physfp);
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if (retval == noErr)
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retval = physfp (selector, responsep);
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return retval;
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}
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...
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OSErr err;
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long vers;
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err = PhysicalGestalt ('sysv', &vers);
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/* err should be noErr and vers should be the version of Executor you're
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running, not the version of the System file we're emulating */
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]]>
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</programlisting>
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<para>
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These are the PhysicalGestalt selectors supported:
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</para>
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<table>
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<title>PhysicalGestalt Selectors</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Name</entry>
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<entry>Value</entry>
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<entry>Response</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>gestaltSystemVersion</entry>
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<entry>'<literal>sysv</literal>'</entry>
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<entry>numeric version of <application>Executor</application></entry>
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</row>
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<row>
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<entry>gestaltExecutorVersionString</entry>
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<entry>'<literal>xqtr</literal>'</entry>
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<entry>address of the string version of <application>Executor</application></entry>
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</row>
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<row>
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<entry>gestaltDemoStatus</entry>
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<entry>'<literal>demo</literal>'</entry>
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<entry>1, if this is a demo version</entry>
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</row>
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<row>
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<entry>gestaltDemoExpiration</entry>
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<entry>'<literal>xpir</literal>'</entry>
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<entry>how many days until the demo expires</entry>
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</row>
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<row>
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<entry>gestaltSerialNumber</entry>
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<entry>'<literal>s/n </literal>'</entry>
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<entry>non-demo version: serial number</entry>
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</row>
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<row>
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<entry>gestaltRegisteredName</entry>
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<entry>'<literal>name</literal>'</entry>
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<entry>non-demo version: name </entry>
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</row>
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<row>
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<entry>gestaltRegisteredOrg</entry>
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<entry>'<literal>org </literal>'</entry>
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<entry>non-demo version: organization</entry>
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</row>
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<row>
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<entry>gestaltPhysicalRAMSize</entry>
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<entry>'<literal>ram </literal>'</entry>
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<entry>amount of physical ram on the machine</entry>
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</row>
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<row>
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<entry>gestaltScreenSize</entry>
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<entry>'<literal>scrn</literal>'</entry>
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<entry>resolution of the monitor</entry>
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</row>
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<row>
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<entry>gestaltGhostScriptVersion</entry>
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<entry>'<literal>gost</literal>'</entry>
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<entry>win32 only: Ghostscript DLL version</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<para>
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ARDI is willing to add PhysicalGestalt selectors as Mac developers require.
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</para>
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</section>
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</article>
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