Qt Mobility Reference Documentation

QMessageId Class Reference

The QMessageId class provides a unique identifier for a QMessage message within the scope of the messaging store. More...

 #include <QMessageId>

Public Functions

QMessageId ()
QMessageId ( const QMessageId & other )
QMessageId ( const QString & id )
~QMessageId ()
bool isValid () const
QString toString () const
bool operator< ( const QMessageId & other ) const

Detailed Description

The QMessageId class provides a unique identifier for a QMessage message within the scope of the messaging store.

A QMessageId can be constructed from a string, or converted to a string with toString().

A QMessageId instance can be tested for validity with isValid(), and compared to other instances for equality.

If the message a QMessageId identifies is removed from the messaging store then the identifier will not be reused.

The QMessageId implementation should be as small as is practical for the underlying platform.

See also QMessage and QMessageManager.

Member Function Documentation

QMessageId::QMessageId ()

Creates an invalid identifier, toString() will return a null string.

QMessageId::QMessageId ( const QMessageId & other )

Constructs a copy of other.

QMessageId::QMessageId ( const QString & id )

Constructs an identifier from id.

See also toString().

QMessageId::~QMessageId ()

Destroys the identifier.

bool QMessageId::isValid () const

Returns true if this identifier is valid; otherwise returns false.

QString QMessageId::toString () const

Returns the string representation of this identifier.

A null string should be returned if and only if the identifier is invalid.

String representations of identifiers should not be used to test for equality, instead the equality operator should be used.

bool QMessageId::operator< ( const QMessageId & other ) const

Returns true if this identifier is ordered before other using an implementation-defined ordering.

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