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237 lines
12 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/tools/tquuid.cpp:40 -->
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13 years ago
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQUuid Class</title>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQUuid Class Reference</h1>
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<p>The TQUuid class defines a Universally Unique Identifier (UUID).
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<a href="#details">More...</a>
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<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when TQt is built with thread support.</p>
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3 months ago
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<p><tt>#include <<a href="tquuid-h.html">tquuid.h</a>></tt>
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<p><a href="tquuid-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>enum <a href="#Variant-enum"><b>Variant</b></a> { VarUnknown = -1, NCS = 0, DCE = 2, Microsoft = 6, Reserved = 7 }</li>
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<li class=fn>enum <a href="#Version-enum"><b>Version</b></a> { VerUnknown = -1, Time = 1, EmbeddedPOSIX = 2, Name = 3, Random = 4 }</li>
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<li class=fn><a href="#TQUuid"><b>TQUuid</b></a> ()</li>
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<li class=fn><a href="#TQUuid-2"><b>TQUuid</b></a> ( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )</li>
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<li class=fn><a href="#TQUuid-3"><b>TQUuid</b></a> ( const TQUuid & orig )</li>
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<li class=fn><a href="#TQUuid-4"><b>TQUuid</b></a> ( const TQString & text )</li>
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<li class=fn>TQString <a href="#toString"><b>toString</b></a> () const</li>
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<li class=fn><a href="#operator-TQString"><b>operator TQString</b></a> () const</li>
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<li class=fn>bool <a href="#isNull"><b>isNull</b></a> () const</li>
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<li class=fn>TQUuid & <a href="#operator-eq"><b>operator=</b></a> ( const TQUuid & uuid )</li>
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<li class=fn>bool <a href="#operator-eq-eq"><b>operator==</b></a> ( const TQUuid & other ) const</li>
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<li class=fn>bool <a href="#operator!-eq"><b>operator!=</b></a> ( const TQUuid & other ) const</li>
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<li class=fn>bool <a href="#operator-lt"><b>operator<</b></a> ( const TQUuid & other ) const</li>
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<li class=fn>bool <a href="#operator-gt"><b>operator></b></a> ( const TQUuid & other ) const</li>
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<li class=fn>TQUuid::Variant <a href="#variant"><b>variant</b></a> () const</li>
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<li class=fn>TQUuid::Version <a href="#version"><b>version</b></a> () const</li>
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</ul>
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<h2>Static Public Members</h2>
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<ul>
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<li class=fn>TQUuid <a href="#createUuid"><b>createUuid</b></a> ()</li>
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</ul>
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<h2>Related Functions</h2>
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<ul>
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<li class=fn>TQDataStream & <a href="#operator-lt-lt"><b>operator<<</b></a> ( TQDataStream & s, const TQUuid & id )</li>
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<li class=fn>TQDataStream & <a href="#operator-gt-gt"><b>operator>></b></a> ( TQDataStream & s, TQUuid & id )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQUuid class defines a Universally Unique Identifier (UUID).
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<p>
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<p> For objects or declarations that must be uniquely identified,
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UUIDs (also known as GUIDs) are widely used in order to assign a
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fixed and easy to compare value to the object or declaration. The
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128-bit value of a UUID is generated by an algorithm that
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guarantees that the value is unique.
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<p> In TQt, UUIDs are wrapped by the TQUuid struct which provides
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convenience functions for handling UUIDs. Most platforms provide a
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tool to generate new UUIDs, for example, uuidgen and guidgen.
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<p> UUIDs generated by TQUuid, are based on the <a href="#Version-enum">Random</a> version of the
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<a href="#Variant-enum">DCE</a> (Distributed Computing Environment) standard.
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<p> UUIDs can be constructed from numeric values or from strings, or
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using the static <a href="#createUuid">createUuid</a>() function. They can be converted to a
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string with <a href="#toString">toString</a>(). UUIDs have a <a href="#variant">variant</a>() and a <a href="#version">version</a>(),
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and null UUIDs return TRUE from <a href="#isNull">isNull</a>().
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<hr><h2>Member Type Documentation</h2>
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<h3 class=fn><a name="Variant-enum"></a>TQUuid::Variant</h3>
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<p> This enum defines the variant of the UUID, which is the scheme
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which defines the layout of the 128-bits value.
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<ul>
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<li><tt>TQUuid::VarUnknown</tt> - Variant is unknown
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<li><tt>TQUuid::NCS</tt> - Reserved for NCS (Network Computing System) backward compatibility
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<li><tt>TQUuid::DCE</tt> - Distributed Computing Environment, the scheme used by TQUuid
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<li><tt>TQUuid::Microsoft</tt> - Reserved for Microsoft backward compatibility (GUID)
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<li><tt>TQUuid::Reserved</tt> - Reserved for future definition
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</ul>
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<h3 class=fn><a name="Version-enum"></a>TQUuid::Version</h3>
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<p> This enum defines the version of the UUID.
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<ul>
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<li><tt>TQUuid::VerUnknown</tt> - Version is unknown
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<li><tt>TQUuid::Time</tt> - Time-based, by using timestamp, clock sequence, and
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MAC network card address (if available) for the node sections
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<li><tt>TQUuid::EmbeddedPOSIX</tt> - DCE Security version, with embedded POSIX UUIDs
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<li><tt>TQUuid::Name</tt> - Name-based, by using values from a name for all sections
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<li><tt>TQUuid::Random</tt> - Random-based, by using random numbers for all sections
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</ul>
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQUuid"></a>TQUuid::TQUuid ()
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</h3>
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<p> Creates the null UUID {00000000-0000-0000-0000-000000000000}.
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<h3 class=fn><a name="TQUuid-2"></a>TQUuid::TQUuid ( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )
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</h3>
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<p> Creates a UUID with the value specified by the parameters, <em>l</em>,
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<em>w1</em>, <em>w2</em>, <em>b1</em>, <em>b2</em>, <em>b3</em>, <em>b4</em>, <em>b5</em>, <em>b6</em>, <em>b7</em>, <em>b8</em>.
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<p> Example:
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<pre>
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// {67C8770B-44F1-410A-AB9A-F9B5446F13EE}
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TQUuid IID_MyInterface( 0x67c8770b, 0x44f1, 0x410a, 0xab, 0x9a, 0xf9, 0xb5, 0x44, 0x6f, 0x13, 0xee )
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</pre>
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3 months ago
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<h3 class=fn><a name="TQUuid-3"></a>TQUuid::TQUuid ( const <a href="tquuid.html">TQUuid</a> & orig )
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</h3>
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<p> Creates a copy of the TQUuid <em>orig</em>.
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6 months ago
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<h3 class=fn><a name="TQUuid-4"></a>TQUuid::TQUuid ( const <a href="tqstring.html">TQString</a> & text )
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</h3>
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Creates a TQUuid object from the string <em>text</em>. The function can
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only convert a string in the format
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{HHHHHHHH-HHHH-HHHH-HHHH-HHHHHHHHHHHH} (where 'H' stands for a hex
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digit). If the conversion fails a null UUID is created.
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3 months ago
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<h3 class=fn><a href="tquuid.html">TQUuid</a> <a name="createUuid"></a>TQUuid::createUuid ()<tt> [static]</tt>
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</h3>
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<p> Returns a new UUID of <a href="#Variant-enum">DCE</a> variant, and <a href="#Version-enum">Random</a> type. The
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UUIDs generated are based on the platform specific pseudo-random
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generator, which is usually not a cryptographic-quality random
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number generator. Therefore, a UUID is not guaranteed to be unique
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cross application instances.
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<p> On Windows, the new UUID is extremely likely to be unique on the
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same or any other system, networked or not.
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<p> <p>See also <a href="#variant">variant</a>() and <a href="#version">version</a>().
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<h3 class=fn>bool <a name="isNull"></a>TQUuid::isNull () const
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</h3>
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Returns TRUE if this is the null UUID
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{00000000-0000-0000-0000-000000000000}; otherwise returns FALSE.
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<h3 class=fn><a name="operator-TQString"></a>TQUuid::operator TQString () const
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</h3>
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<p> Returns the string representation of the uuid.
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<p> <p>See also <a href="#toString">toString</a>().
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<h3 class=fn>bool <a name="operator!-eq"></a>TQUuid::operator!= ( const <a href="tquuid.html">TQUuid</a> & other ) const
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</h3>
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<p> Returns TRUE if this TQUuid and the <em>other</em> TQUuid are different;
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otherwise returns FALSE.
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3 months ago
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<h3 class=fn>bool <a name="operator-lt"></a>TQUuid::operator< ( const <a href="tquuid.html">TQUuid</a> & other ) const
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13 years ago
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</h3>
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<p> Returns TRUE if this TQUuid is of the same variant,
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and lexicographically before the <em>other</em> TQUuid;
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otherwise returns FALSE.
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<p> <p>See also <a href="#variant">variant</a>().
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<h3 class=fn><a href="tquuid.html">TQUuid</a> & <a name="operator-eq"></a>TQUuid::operator= ( const <a href="tquuid.html">TQUuid</a> & uuid )
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13 years ago
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</h3>
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<p> Assigns the value of <em>uuid</em> to this TQUuid object.
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<h3 class=fn>bool <a name="operator-eq-eq"></a>TQUuid::operator== ( const <a href="tquuid.html">TQUuid</a> & other ) const
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13 years ago
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</h3>
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<p> Returns TRUE if this TQUuid and the <em>other</em> TQUuid are identical;
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otherwise returns FALSE.
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3 months ago
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<h3 class=fn>bool <a name="operator-gt"></a>TQUuid::operator> ( const <a href="tquuid.html">TQUuid</a> & other ) const
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13 years ago
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</h3>
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<p> Returns TRUE if this TQUuid is of the same variant,
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and lexicographically after the <em>other</em> TQUuid;
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otherwise returns FALSE.
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<p> <p>See also <a href="#variant">variant</a>().
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6 months ago
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<h3 class=fn><a href="tqstring.html">TQString</a> <a name="toString"></a>TQUuid::toString () const
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</h3>
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<a href="tqstring.html">TQString</a> <a href="#toString">TQUuid::toString</a>() const
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<p> Returns the string representation of the uuid.
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3 months ago
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<h3 class=fn><a href="tquuid.html#Variant-enum">TQUuid::Variant</a> <a name="variant"></a>TQUuid::variant () const
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</h3>
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<p> Returns the variant of the UUID.
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The null UUID is considered to be of an unknown variant.
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<p> <p>See also <a href="#version">version</a>().
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3 months ago
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<h3 class=fn><a href="tquuid.html#Version-enum">TQUuid::Version</a> <a name="version"></a>TQUuid::version () const
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13 years ago
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</h3>
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<p> Returns the version of the UUID, if the UUID is of the DCE
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variant; otherwise returns VerUnknown.
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<p> <p>See also <a href="#variant">variant</a>().
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<hr><h2>Related Functions</h2>
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3 months ago
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<h3 class=fn><a href="tqdatastream.html">TQDataStream</a> & <a name="operator-lt-lt"></a>operator<< ( <a href="tqdatastream.html">TQDataStream</a> & s, const <a href="tquuid.html">TQUuid</a> & id )
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13 years ago
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</h3>
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Writes the uuid <em>id</em> to the datastream <em>s</em>.
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3 months ago
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<h3 class=fn><a href="tqdatastream.html">TQDataStream</a> & <a name="operator-gt-gt"></a>operator>> ( <a href="tqdatastream.html">TQDataStream</a> & s, <a href="tquuid.html">TQUuid</a> & id )
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13 years ago
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</h3>
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Reads uuid from from the stream <em>s</em> into <em>id</em>.
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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