Qt-interest Archive, April 2007
understanding dumpObjectInfo()
Message 1 in thread
Can anyone throw some light on the output format of
QObject::dumpObjectInfo() ?
If I call it from within a class called NSocket, I get the following:
OBJECT NSocket::unnamed
I'm not sure what the "unnamed" bit is.. or OBJECT.. any ideas? Is there
an easier way to see the signal / slot connections for a particular
class? I saw QMetaObject, but that seems to do the reverse of what I
want (useful when you already know that a slot / signal exists).
Thanks,
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Message 2 in thread
Hi,
> Can anyone throw some light on the output format of
> QObject::dumpObjectInfo() ?
Since this doesn't seem to be documented, have a look at the source code
in src/corelib/kernel/qobject.cpp.
> If I call it from within a class called NSocket, I get the following:
>
> OBJECT NSocket::unnamed
OBJECT starts the line describing the object itself. Here "NSocket" is
the class name while "unnamed" is the name of the instance of the class,
as set by QObject::setObjectName().
Then there are lines starting with "SIGNALS IN" for connections where
the object is the receiver and "SIGNALS OUT" for connections where the
object is the sender.
> I'm not sure what the "unnamed" bit is.. or OBJECT.. any ideas? Is there
> an easier way to see the signal / slot connections for a particular
> class? I saw QMetaObject, but that seems to do the reverse of what I
> want (useful when you already know that a slot / signal exists).
What do you need exactly? A list of signals and slots associated to a
class? A list of effective connections associated to an instance of a class?
QMetaObject describes a class. You can retrieve a list of signals and
slots associated to the class, whether they are used in instances of the
class or not.
QObject::dumpObjectInfo() describes an instance of a class. It will dump
information about effective connections with other objects and it will
not show signals and slots that are not connected.
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