QDBusAbstractAdaptor 类是 D-Bus 适配器类的基类。 更多...
| 头： | #include <QDBusAbstractAdaptor> |
| qmake: | QT += dbus |
| Since: | Qt 4.2 |
| 继承： | QObject |
| ~QDBusAbstractAdaptor () |
| QDBusAbstractAdaptor (QObject * obj ) | |
| bool | autoRelaySignals () const |
| void | setAutoRelaySignals (bool enable ) |
| Q_NOREPLY |
QDBusAbstractAdaptor 类是 D-Bus 适配器类的基类。
QDBusAbstractAdaptor class is the starting point for all objects intending to provide interfaces to the external world using D-Bus. This is accomplished by attaching a one or more classes derived from QDBusAbstractAdaptor to a normal QObject and then registering that QObject with QDBusConnection::registerObject . QDBusAbstractAdaptor objects are intended to be light-weight wrappers, mostly just relaying calls into the real object (its parent) and the signals from it.
每个 QDBusAbstractAdaptor -derived class should define the D-Bus interface it is implementing using the Q_CLASSINFO macro in the class definition. Note that only one interface can be exposed in this way.
QDBusAbstractAdaptor uses the standard QObject mechanism of signals, slots and properties to determine what signals, methods and properties to export to the bus. Any signal emitted by QDBusAbstractAdaptor -derived classes will be automatically be relayed through any D-Bus connections the object is registered on.
Classes derived from QDBusAbstractAdaptor must be created on the heap using the new operator and must not be deleted by the user (they will be deleted automatically when the object they are connected to is also deleted).
另请参阅 使用适配器 and QDBusConnection .
[protected]
QDBusAbstractAdaptor::
QDBusAbstractAdaptor
(
QObject
*
obj
)
构造 QDBusAbstractAdaptor with obj 作为父级对象。
销毁适配器。
警告： Adaptors are destroyed automatically when the real object they refer to is destroyed. Do not delete the adaptors yourself.
[protected]
bool
QDBusAbstractAdaptor::
autoRelaySignals
() const
返回
true
if automatic signal relaying from the real object (see object()) is enabled, otherwiser returns
false
.
另请参阅 setAutoRelaySignals ().
[protected]
void
QDBusAbstractAdaptor::
setAutoRelaySignals
(
bool
enable
)
Toggles automatic signal relaying from the real object (see object()).
Automatic signal relaying consists of signal-to-signal connection of the signals on the parent that have the exact same method signatue in both classes.
若 enable 被设为 true，连接信号；若被设为 false，断开所有信号的连接。
另请参阅 autoRelaySignals ().
The Q_NOREPLY macro can be used to mark a method to be called and not wait for it to finish processing before returning from QDBusInterface::call (). The called method cannot return any output arguments and, if it does, any such arguments will be discarded.
You can use this macro in your own adaptors by placing it before your method's return value (which must be "void") in the class declaration, as shown in the example:
Q_NOREPLY void myMethod();
Its presence in the method implementation (outside the class declaration) is optional.
该函数在 Qt 4.2 引入。
另请参阅 使用 Qt D-Bus 适配器 .