QDBusVariant Class▲
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Header: QDBusVariant
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Since: Qt 4.2
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qmake: QT += dbus
Detailed Description▲
A D-Bus function that takes an integer, a D-Bus variant and a string as parameters can be called with the following argument list (see QDBusMessage::setArguments()):
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QList<QVariant> arguments;
arguments << QVariant(42) << QVariant::fromValue(QDBusVariant(43)) << QVariant("hello");
myDBusMessage.setArguments(arguments);When a D-Bus function returns a D-Bus variant, it can be retrieved as follows:
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// call a D-Bus function that returns a D-Bus variant
QVariant v = callMyDBusFunction();
// retrieve the D-Bus variant
QDBusVariant dbusVariant = qvariant_cast<QDBusVariant>(v);
// retrieve the actual value stored in the D-Bus variant
QVariant result = dbusVariant.variant();The QVariant within a QDBusVariant is required to distinguish between a normal D-Bus value and a value within a D-Bus variant.
See Also▲
See also The Qt D-Bus Type System