Method
GObjectObjectdup_qdata
since: 2.34
Declaration [src]
gpointer
g_object_dup_qdata (
GObject* object,
GQuark quark,
GDuplicateFunc dup_func,
gpointer user_data
)
Description [src]
This is a variant of g_object_get_qdata() which returns
a ‘duplicate’ of the value. dup_func defines the
meaning of ‘duplicate’ in this context, it could e.g.
take a reference on a ref-counted object.
If the quark is not set on the object then dup_func
will be called with a NULL argument.
Note that dup_func is called while user data of object
is locked.
This function can be useful to avoid races when multiple threads are using object data on the same key on the same object.
Available since: 2.34
This method is not directly available to language bindings.
Parameters
quark-
Type:
GQuarkA
GQuark, naming the user data pointer. dup_func-
Type:
GDuplicateFuncFunction to dup the value.
The argument can be NULL. user_data-
Type:
gpointerPassed as user_data to
dup_func.The argument can be NULL.The data is owned by the caller of the method.