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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
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+'\" t
+.TH QUuid 3qt "2 February 2007" "Trolltech AS" \" -*- nroff -*-
+.\" Copyright 1992-2007 Trolltech ASA. All rights reserved. See the
+.\" license file included in the distribution for a complete license
+.\" statement.
+.\"
+.ad l
+.nh
+.SH NAME
+QUuid \- Defines a Universally Unique Identifier (UUID)
+.SH SYNOPSIS
+All the functions in this class are reentrant when Qt is built with thread support.</p>
+.PP
+\fC#include <quuid.h>\fR
+.PP
+.SS "Public Members"
+.in +1c
+.ti -1c
+.BI "enum \fBVariant\fR { VarUnknown = -1, NCS = 0, DCE = 2, Microsoft = 6, Reserved = 7 }"
+.br
+.ti -1c
+.BI "enum \fBVersion\fR { VerUnknown = -1, Time = 1, EmbeddedPOSIX = 2, Name = 3, Random = 4 }"
+.br
+.ti -1c
+.BI "\fBQUuid\fR ()"
+.br
+.ti -1c
+.BI "\fBQUuid\fR ( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )"
+.br
+.ti -1c
+.BI "\fBQUuid\fR ( const QUuid & orig )"
+.br
+.ti -1c
+.BI "\fBQUuid\fR ( const QString & text )"
+.br
+.ti -1c
+.BI "QString \fBtoString\fR () const"
+.br
+.ti -1c
+.BI "\fBoperator QString\fR () const"
+.br
+.ti -1c
+.BI "bool \fBisNull\fR () const"
+.br
+.ti -1c
+.BI "QUuid & \fBoperator=\fR ( const QUuid & uuid )"
+.br
+.ti -1c
+.BI "bool \fBoperator==\fR ( const QUuid & other ) const"
+.br
+.ti -1c
+.BI "bool \fBoperator!=\fR ( const QUuid & other ) const"
+.br
+.ti -1c
+.BI "bool \fBoperator<\fR ( const QUuid & other ) const"
+.br
+.ti -1c
+.BI "bool \fBoperator>\fR ( const QUuid & other ) const"
+.br
+.ti -1c
+.BI "QUuid::Variant \fBvariant\fR () const"
+.br
+.ti -1c
+.BI "QUuid::Version \fBversion\fR () const"
+.br
+.in -1c
+.SS "Static Public Members"
+.in +1c
+.ti -1c
+.BI "QUuid \fBcreateUuid\fR ()"
+.br
+.in -1c
+.SH RELATED FUNCTION DOCUMENTATION
+.in +1c
+.ti -1c
+.BI "QDataStream & \fBoperator<<\fR ( QDataStream & s, const QUuid & id )"
+.br
+.ti -1c
+.BI "QDataStream & \fBoperator>>\fR ( QDataStream & s, QUuid & id )"
+.br
+.in -1c
+.SH DESCRIPTION
+The QUuid class defines a Universally Unique Identifier (UUID).
+.PP
+For objects or declarations that must be uniquely identified, UUIDs (also known as GUIDs) are widely used in order to assign a fixed and easy to compare value to the object or declaration. The 128-bit value of a UUID is generated by an algorithm that guarantees that the value is unique.
+.PP
+In Qt, UUIDs are wrapped by the QUuid struct which provides convenience functions for handling UUIDs. Most platforms provide a tool to generate new UUIDs, for example, uuidgen and guidgen.
+.PP
+UUIDs generated by QUuid, are based on the Random version of the DCE (Distributed Computing Environment) standard.
+.PP
+UUIDs can be constructed from numeric values or from strings, or using the static createUuid() function. They can be converted to a string with toString(). UUIDs have a variant() and a version(), and null UUIDs return TRUE from isNull().
+.SS "Member Type Documentation"
+.SH "QUuid::Variant"
+This enum defines the variant of the UUID, which is the scheme which defines the layout of the 128-bits value.
+.TP
+\fCQUuid::VarUnknown\fR - Variant is unknown
+.TP
+\fCQUuid::NCS\fR - Reserved for NCS (Network Computing System) backward compatibility
+.TP
+\fCQUuid::DCE\fR - Distributed Computing Environment, the scheme used by QUuid
+.TP
+\fCQUuid::Microsoft\fR - Reserved for Microsoft backward compatibility (GUID)
+.TP
+\fCQUuid::Reserved\fR - Reserved for future definition
+.SH "QUuid::Version"
+This enum defines the version of the UUID.
+.TP
+\fCQUuid::VerUnknown\fR - Version is unknown
+.TP
+\fCQUuid::Time\fR - Time-based, by using timestamp, clock sequence, and MAC network card address (if available) for the node sections
+.TP
+\fCQUuid::EmbeddedPOSIX\fR - DCE Security version, with embedded POSIX UUIDs
+.TP
+\fCQUuid::Name\fR - Name-based, by using values from a name for all sections
+.TP
+\fCQUuid::Random\fR - Random-based, by using random numbers for all sections
+.SH MEMBER FUNCTION DOCUMENTATION
+.SH "QUuid::QUuid ()"
+Creates the null UUID {00000000-0000-0000-0000-000000000000}.
+.SH "QUuid::QUuid ( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )"
+Creates a UUID with the value specified by the parameters, \fIl\fR, \fIw1\fR, \fIw2\fR, \fIb1\fR, \fIb2\fR, \fIb3\fR, \fIb4\fR, \fIb5\fR, \fIb6\fR, \fIb7\fR, \fIb8\fR.
+.PP
+Example:
+.PP
+.nf
+.br
+ // {67C8770B-44F1-410A-AB9A-F9B5446F13EE}
+.br
+ QUuid IID_MyInterface( 0x67c8770b, 0x44f1, 0x410a, 0xab, 0x9a, 0xf9, 0xb5, 0x44, 0x6f, 0x13, 0xee )
+.br
+.fi
+.SH "QUuid::QUuid ( const QUuid & orig )"
+Creates a copy of the QUuid \fIorig\fR.
+.SH "QUuid::QUuid ( const QString & text )"
+Creates a QUuid object from the string \fItext\fR. The function can only convert a string in the format {HHHHHHHH-HHHH-HHHH-HHHH-HHHHHHHHHHHH} (where 'H' stands for a hex digit). If the conversion fails a null UUID is created.
+.SH "QUuid QUuid::createUuid ()\fC [static]\fR"
+Returns a new UUID of DCE variant, and Random type. The UUIDs generated are based on the platform specific pseudo-random generator, which is usually not a cryptographic-quality random number generator. Therefore, a UUID is not guaranteed to be unique cross application instances.
+.PP
+On Windows, the new UUID is extremely likely to be unique on the same or any other system, networked or not.
+.PP
+See also variant() and version().
+.SH "bool QUuid::isNull () const"
+Returns TRUE if this is the null UUID {00000000-0000-0000-0000-000000000000}; otherwise returns FALSE.
+.SH "QUuid::operator QString () const"
+Returns the string representation of the uuid.
+.PP
+See also toString().
+.SH "bool QUuid::operator!= ( const QUuid & other ) const"
+Returns TRUE if this QUuid and the \fIother\fR QUuid are different; otherwise returns FALSE.
+.SH "bool QUuid::operator< ( const QUuid & other ) const"
+Returns TRUE if this QUuid is of the same variant, and lexicographically before the \fIother\fR QUuid; otherwise returns FALSE.
+.PP
+See also variant().
+.SH "QUuid & QUuid::operator= ( const QUuid & uuid )"
+Assigns the value of \fIuuid\fR to this QUuid object.
+.SH "bool QUuid::operator== ( const QUuid & other ) const"
+Returns TRUE if this QUuid and the \fIother\fR QUuid are identical; otherwise returns FALSE.
+.SH "bool QUuid::operator> ( const QUuid & other ) const"
+Returns TRUE if this QUuid is of the same variant, and lexicographically after the \fIother\fR QUuid; otherwise returns FALSE.
+.PP
+See also variant().
+.SH "QString QUuid::toString () const"
+QString QUuid::toString() const
+.PP
+Returns the string representation of the uuid.
+.SH "QUuid::Variant QUuid::variant () const"
+Returns the variant of the UUID. The null UUID is considered to be of an unknown variant.
+.PP
+See also version().
+.SH "QUuid::Version QUuid::version () const"
+Returns the version of the UUID, if the UUID is of the DCE variant; otherwise returns VerUnknown.
+.PP
+See also variant().
+.SH RELATED FUNCTION DOCUMENTATION
+.SH "QDataStream & operator<< ( QDataStream & s, const QUuid & id )"
+Writes the uuid \fIid\fR to the datastream \fIs\fR.
+.SH "QDataStream & operator>> ( QDataStream & s, QUuid & id )"
+Reads uuid from from the stream \fIs\fR into \fIid\fR.
+
+.SH "SEE ALSO"
+.BR http://doc.trolltech.com/quuid.html
+.BR http://www.trolltech.com/faq/tech.html
+.SH COPYRIGHT
+Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the
+license file included in the distribution for a complete license
+statement.
+.SH AUTHOR
+Generated automatically from the source code.
+.SH BUGS
+If you find a bug in Qt, please report it as described in
+.BR http://doc.trolltech.com/bughowto.html .
+Good bug reports help us to help you. Thank you.
+.P
+The definitive Qt documentation is provided in HTML format; it is
+located at $QTDIR/doc/html and can be read using Qt Assistant or with
+a web browser. This man page is provided as a convenience for those
+users who prefer man pages, although this format is not officially
+supported by Trolltech.
+.P
+If you find errors in this manual page, please report them to
+.BR qt-bugs@trolltech.com .
+Please include the name of the manual page (quuid.3qt) and the Qt
+version (3.3.8).