QDBusMetaType Class Reference

\inmodule QtDBus More...

#include <qdbusmetatype.h>

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Public Types
typedef void(*	MarshallFunction) (QDBusArgument &, const void *)
typedef void(*	DemarshallFunction) (const QDBusArgument &, void *)

Static Public Member Functions
static void	registerMarshallOperators (QMetaType typeId, MarshallFunction, DemarshallFunction)
static bool	marshall (QDBusArgument &, QMetaType id, const void *data)
static bool	demarshall (const QDBusArgument &, QMetaType id, void *data)
static void	registerCustomType (QMetaType type, const QByteArray &signature)
static QMetaType	signatureToMetaType (const char *signature)
static const char *	typeToSignature (QMetaType type)

Detailed Description

\inmodule QtDBus

Meta-type registration system for the Qt D-Bus module.

The QDBusMetaType class allows you to register class types for marshalling and demarshalling over D-Bus. D-Bus supports a very limited set of primitive types, but allows one to extend the type system by creating compound types, such as arrays (lists) and structs. In order to use them with Qt D-Bus, those types must be registered.

See \l {qdbustypesystem.html}{Qt D-Bus Type System} for more information on the type system and how to register additional types.

See also

{qdbustypesystem.html}{Qt D-Bus Type System}, qDBusRegisterMetaType(), QMetaType, QVariant, QDBusArgument

Definition at line 16 of file qdbusmetatype.h.

Member Typedef Documentation

DemarshallFunction

QDBusMetaType::DemarshallFunction

Definition at line 20 of file qdbusmetatype.h.

MarshallFunction

QDBusMetaType::MarshallFunction

Definition at line 19 of file qdbusmetatype.h.

Member Function Documentation

demarshall()

bool QDBusMetaType::demarshall ( const QDBusArgument & arg, QMetaType metaType, void * data )

static

Executes the demarshalling of type metaType (whose data will be placed in data) from the D-Bus marshalling argument arg. Returns true if the demarshalling succeeded, or false if an error occurred.

Definition at line 243 of file qdbusmetatype.cpp.

References arg, QSet< T >::cend(), QSet< T >::constFind(), copy(), QMetaType::id(), info, QDBusMetaTypeId::init(), it, and Q_UNUSED.

Referenced by copyArgument(), QDBusAbstractInterfacePrivate::property(), qDBusReplyFill(), and writeProperty().

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marshall()

bool QDBusMetaType::marshall ( QDBusArgument & arg, QMetaType metaType, const void * data )

static

Executes the marshalling of type metaType (whose data is contained in data) to the D-Bus marshalling argument arg. Returns true if the marshalling succeeded, or false if an error occurred.

Definition at line 208 of file qdbusmetatype.cpp.

References arg, QSet< T >::cend(), QSet< T >::constFind(), QMetaType::id(), info, QDBusMetaTypeId::init(), and it.

Referenced by QDBusMarshaller::appendRegisteredType(), and QDBusArgumentPrivate::createSignature().

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registerCustomType()

void QDBusMetaType::registerCustomType ( QMetaType type, const QByteArray & signature )

static

Registers the meta type type to be represeneted by the given D-Bus signature.

This is used in qdbuscpp2xml for custom types which aren't known to the C++ type system.

Definition at line 372 of file qdbusmetatype.cpp.

References info.

Referenced by parseCmdLine().

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registerMarshallOperators()

void QDBusMetaType::registerMarshallOperators ( QMetaType metaType, MarshallFunction mf, DemarshallFunction df )

static

Registers the marshalling and demarshalling functions for meta type metaType.

Definition at line 185 of file qdbusmetatype.cpp.

References info.

Referenced by QDBusArgument::qDBusRegisterMetaType().

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signatureToMetaType()

QMetaType QDBusMetaType::signatureToMetaType ( const char * signature )

static

Definition at line 290 of file qdbusmetatype.cpp.

References DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, DBUS_TYPE_BYTE, DBUS_TYPE_DOUBLE, DBUS_TYPE_INT16, DBUS_TYPE_INT32, DBUS_TYPE_INT64, DBUS_TYPE_OBJECT_PATH, DBUS_TYPE_SIGNATURE, DBUS_TYPE_STRING, DBUS_TYPE_UINT16, DBUS_TYPE_UINT32, DBUS_TYPE_UINT64, DBUS_TYPE_UNIX_FD, DBUS_TYPE_VARIANT, QDBusMetaTypeId::init(), QDBusMetaTypeId::objectpath(), Q_FALLTHROUGH, QDBusMetaTypeId::signature(), QDBusMetaTypeId::unixfd(), QMetaType::UnknownType, and QDBusMetaTypeId::variant().

Referenced by addFunction(), QDBusArgumentPrivate::createSignature(), generateInterfaceXml(), and generateInterfaceXml().

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typeToSignature()

const char * QDBusMetaType::typeToSignature ( QMetaType type )

static

Returns the D-Bus signature equivalent to the supplied meta type id type.

More types can be registered with the qDBusRegisterMetaType() function.

See also

QDBusUtil::isValidSingleSignature(), signatureToType(), QVariant::metaType()

Definition at line 395 of file qdbusmetatype.cpp.

References QSet< T >::constFind(), QDBusArgumentPrivate::createSignature(), DBUS_TYPE_ARRAY_AS_STRING, DBUS_TYPE_BOOLEAN_AS_STRING, DBUS_TYPE_BYTE_AS_STRING, DBUS_TYPE_DOUBLE_AS_STRING, DBUS_TYPE_INT16_AS_STRING, DBUS_TYPE_INT32_AS_STRING, DBUS_TYPE_INT64_AS_STRING, DBUS_TYPE_OBJECT_PATH_AS_STRING, DBUS_TYPE_SIGNATURE_AS_STRING, DBUS_TYPE_STRING_AS_STRING, DBUS_TYPE_UINT16_AS_STRING, DBUS_TYPE_UINT32_AS_STRING, DBUS_TYPE_UINT64_AS_STRING, DBUS_TYPE_UNIX_FD_AS_STRING, DBUS_TYPE_VARIANT_AS_STRING, QSet< T >::end(), info, QDBusMetaTypeId::init(), it, QDBusMetaTypeId::objectpath(), QDBusMetaTypeId::signature(), QDBusMetaTypeId::unixfd(), and QDBusMetaTypeId::variant().

Referenced by addFunction(), QDBusMarshaller::append(), QDBusMarshaller::appendVariantInternal(), QDBusMarshaller::beginArray(), QDBusMarshaller::beginMap(), copyArgument(), findSlot(), generateInterfaceXml(), generateInterfaceXml(), QDBusMessagePrivate::makeLocal(), QDBusConnectionPrivate::prepareHook(), QDBusAbstractInterfacePrivate::property(), qDBusParametersForMethod(), qDBusReplyFill(), readAllProperties(), and QDBusPendingCallPrivate::setMetaTypes().

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The documentation for this class was generated from the following files:

• qtbase/src/dbus/qdbusmetatype.h (05fc3aef53348fb58be6308076e000825b704e58)
• qtbase/src/dbus/qdbusmetatype.cpp (94bf53cc5fefcea3b36cad25b22b75ce8c0bbfb0)