glibmm: Gio::DBus::Message Class Reference
A type for representing D-Bus messages that can be sent or received on a Connection . More...
#include <giomm/dbusmessage.h>

Public Types |
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enum |
ByteOrder
{
BYTE_ORDER_BIG_ENDIAN = 'B', BYTE_ORDER_LITTLE_ENDIAN = 'l' } |
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using | DestroyNotify = void(*)(gpointer data) |
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typedef internal::func_destroy_notify | func_destroy_notify |
Public Member Functions |
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Message ( Message && src) noexcept | |
Message & | operator= ( Message && src) noexcept |
~Message () noexceptoverride | |
GDBusMessage* | gobj () |
Provides access to the underlying C GObject.
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const GDBusMessage* | gobj () const |
Provides access to the underlying C GObject.
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GDBusMessage* | gobj_copy () |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
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Glib::ustring | print (guint indent) |
Produces a human-readable multi-line description of
message
.
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bool | get_locked () const |
Checks whether
message
is locked.
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void | lock () |
If
message
is locked, does nothing.
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Glib::RefPtr < Message > | copy () const |
Copies
message
.
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MessageType | get_message_type () const |
Gets the type of
message
.
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void | set_message_type ( MessageType type) |
Sets
message
to be of
type
.
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ByteOrder | get_byte_order () const |
Gets the byte order of
message
.
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void | set_byte_order ( ByteOrder byte_order) |
Sets the byte order of
message
.
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guint32 | get_serial () const |
Gets the serial for
message
.
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void | set_serial (guint32 serial) |
Sets the serial for
message
.
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MessageFlags | get_flags () const |
Gets the flags for
message
.
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void | set_flags ( MessageFlags flags) |
Sets the flags to set on
message
.
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void | get_body ( Glib::VariantBase & value) const |
Gets the body of a message.
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void | set_body (const Glib::VariantBase & body) |
Sets the body
message
.
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Glib::RefPtr < UnixFDList > | get_unix_fd_list () |
Gets the UNIX file descriptors associated with
message
, if any.
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Glib::RefPtr < const UnixFDList > | get_unix_fd_list () const |
Gets the UNIX file descriptors associated with
message
, if any.
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void | set_unix_fd_list (const Glib::RefPtr < UnixFDList >& fd_list) |
Sets the UNIX file descriptors associated with
message
.
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void | unset_unix_fd_list () |
Clears the existing UNIX file descriptor list.
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guint32 | get_num_unix_fds () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
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void | set_num_unix_fds (guint32 value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
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void | get_header ( Glib::VariantBase & value, MessageHeaderField header_field) const |
Gets a header field on the message.
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void | set_header ( MessageHeaderField header_field, const Glib::VariantBase & value) |
Sets a header field on
message
.
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Glib::ArrayHandle < guchar > | get_header_fields () const |
Gets an array of all header fields on
message
that are set.
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Glib::ustring | get_destination () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
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void | set_destination (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
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Glib::ustring | get_error_name () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
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void | set_error_name (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
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Glib::ustring | get_interface () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
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void | set_interface (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
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Glib::ustring | get_member () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
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void | set_member (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
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Glib::ustring | get_path () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_PATH header field.
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void | set_path (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_PATH header field.
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guint32 | get_reply_serial () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
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void | set_reply_serial (guint32 value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
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Glib::ustring | get_sender () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
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void | set_sender (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
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Glib::ustring | get_signature () const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
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void | set_signature (const Glib::ustring & value) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
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Glib::ustring | get_arg0 () const |
Convenience to get the first item in the body of
message
.
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guchar* | to_blob (gsize& out_size, CapabilityFlags capabilities= CAPABILITY_FLAGS_NONE ) |
Serializes
message
to a blob.
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void | to_exception () |
If
message
is not of type DBUS_MESSAGE_TYPE_ERROR does nothing and returns
false
.
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Glib::PropertyProxy_ReadOnly < bool > | property_locked () const |
Whether the message is locked.
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Object (const Object &)=delete | |
Object & | operator= (const Object &)=delete |
Object ( Object && src) noexcept | |
Object & | operator= ( Object && src) noexcept |
void* | get_data (const QueryQuark & key) |
void | set_data (const Quark & key, void* data) |
void | set_data (const Quark & key, void* data, DestroyNotify notify) |
void | remove_data (const QueryQuark & quark) |
void* | steal_data (const QueryQuark & quark) |
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ObjectBase (const ObjectBase &)=delete | |
ObjectBase & | operator= (const ObjectBase &)=delete |
void | set_property_value (const Glib::ustring & property_name, const Glib::ValueBase & value) |
You probably want to use a specific property_*() accessor method instead.
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void | get_property_value (const Glib::ustring & property_name, Glib::ValueBase & value) const |
You probably want to use a specific property_*() accessor method instead.
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template<class PropertyType > | |
void | set_property (const Glib::ustring & property_name, const PropertyType& value) |
You probably want to use a specific property_*() accessor method instead.
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template<class PropertyType > | |
void | get_property (const Glib::ustring & property_name, PropertyType& value) const |
You probably want to use a specific property_*() accessor method instead.
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void | connect_property_changed (const Glib::ustring & property_name, const sigc::slot < void >& slot) |
You can use the signal_changed() signal of the property proxy instead.
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void | connect_property_changed (const Glib::ustring & property_name, sigc::slot < void >&& slot) |
You can use the signal_changed() signal of the property proxy instead.
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sigc::connection | connect_property_changed_with_return (const Glib::ustring & property_name, const sigc::slot < void >& slot) |
You can use the signal_changed() signal of the property proxy instead.
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sigc::connection | connect_property_changed_with_return (const Glib::ustring & property_name, sigc::slot < void >&& slot) |
You can use the signal_changed() signal of the property proxy instead.
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void | freeze_notify () |
Increases the freeze count on object.
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void | thaw_notify () |
Reverts the effect of a previous call to
freeze_notify()
.
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virtual void | reference () const |
Increment the reference count for this object.
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virtual void | unreference () const |
Decrement the reference count for this object.
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GObject* | gobj () |
Provides access to the underlying C GObject.
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const GObject* | gobj () const |
Provides access to the underlying C GObject.
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GObject* | gobj_copy () const |
Give a ref-ed copy to someone. Use for direct struct access.
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trackable () noexcept | |
trackable (const trackable &src) noexcept | |
trackable ( trackable &&src) | |
~trackable () | |
void | add_destroy_notify_callback (void *data, func_destroy_notify func) const |
void | notify_callbacks () |
trackable & | operator= (const trackable &src) |
trackable & | operator= ( trackable &&src) |
void | remove_destroy_notify_callback (void *data) const |
Static Public Member Functions |
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static GType | get_type () |
Get the GType for this class, for use with the underlying GObject type system.
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static Glib::RefPtr < Message > | create () |
Creates a new empty DBusMessage.
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static Glib::RefPtr < Message > | create_signal (const Glib::ustring & path, const Glib::ustring & iface, const Glib::ustring & signal) |
Creates a new DBusMessage for a signal emission.
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static Glib::RefPtr < Message > | create_method_call (const Glib::ustring & name, const Glib::ustring & path, const Glib::ustring & iface, const Glib::ustring & method) |
Creates a new DBusMessage for a method call.
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static Glib::RefPtr < Message > | create_method_reply (const Glib::RefPtr < Message >& method_call_message) |
Creates a new DBusMessage that is a reply to
method_call_message
.
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static Glib::RefPtr < Message > | create_method_error_literal (const Glib::RefPtr < const Message >& method_call_message, const Glib::ustring & error_name, const Glib::ustring & error_message) |
Creates a new DBusMessage that is an error reply to
method_call_message
.
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static Glib::RefPtr < Message > | create_from_blob (const guchar* blob, gsize blob_len, CapabilityFlags capabilities= CAPABILITY_FLAGS_NONE ) |
Creates a new DBusMessage from the data stored at
blob
.
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static gssize | bytes_needed (const guchar* blob, gsize blob_len) |
Utility function to calculate how many bytes are needed to completely deserialize the D-Bus message stored at
blob
.
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Protected Member Functions |
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Message () | |
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Object () | |
Object (const Glib::ConstructParams& construct_params) | |
Object (GObject* castitem) | |
~Object () noexceptoverride | |
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ObjectBase () | |
This default constructor is called implicitly from the constructor of user-derived classes, even if, for instance, Gtk::Button calls a different
ObjectBase
constructor.
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ObjectBase (const char* custom_type_name) | |
A derived constructor always overrides this choice.
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ObjectBase (const std::type_info & custom_type_info) | |
This constructor is a special feature to allow creation of derived types on the fly, without having to use g_object_new() manually.
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ObjectBase ( ObjectBase && src) noexcept | |
ObjectBase & | operator= ( ObjectBase && src) noexcept |
virtual | ~ObjectBase () noexcept=0 |
void | initialize (GObject* castitem) |
void | initialize_move (GObject* castitem, Glib::ObjectBase * previous_wrapper) |
Related Functions |
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(Note that these are not member functions.) |
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Glib::RefPtr < Gio::DBus::Message > | wrap (GDBusMessage* object, bool take_copy=false) |
A
Glib::wrap()
method for this object.
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Glib::RefPtr < Glib::Object > | wrap (GObject* object, bool take_copy=false) |
Detailed Description
A type for representing D-Bus messages that can be sent or received on a Connection .
Constructor & Destructor Documentation
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noexcept |
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override noexcept |
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protected |
Member Function Documentation
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static |
Utility function to calculate how many bytes are needed to completely deserialize the D-Bus message stored at blob .
- Parameters
-
blob A blob represent a binary D-Bus message. blob_len The length of blob (must be at least 16).
- Returns
- Number of bytes needed or -1 if error is set (e.g. if blob contains invalid data or not enough data is available to determine the size).
Glib::RefPtr < Message > Gio::DBus::Message::copy | ( | ) | const |
Copies message .
The copy is a deep copy and the returned DBusMessage is completely identical except that it is guaranteed to not be locked.
This operation can fail if e.g. message contains file descriptors and the per-process or system-wide open files limit is reached.
- Returns
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A new DBusMessage or
nullptr
if error is set. Free with Glib::object_unref().
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Creates a new empty DBusMessage.
- Returns
- A DBusMessage. Free with Glib::object_unref().
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Creates a new DBusMessage from the data stored at blob .
The byte order that the message was in can be retrieved using g_dbus_message_get_byte_order().
- Parameters
-
blob A blob represent a binary D-Bus message. blob_len The length of blob . capabilities A DBusCapabilityFlags describing what protocol features are supported.
- Returns
-
A new DBusMessage or
nullptr
if error is set. Free with Glib::object_unref().
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Creates a new DBusMessage for a method call.
- Parameters
-
name A valid D-Bus name or nullptr
.path A valid object path. interface A valid D-Bus interface name or nullptr
.method A valid method name.
- Returns
- A DBusMessage. Free with Glib::object_unref().
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Creates a new DBusMessage that is an error reply to method_call_message .
- Parameters
-
method_call_message A message of type DBUS_MESSAGE_TYPE_METHOD_CALL to create a reply message to. error_name A valid D-Bus error name. error_message The D-Bus error message.
- Returns
- A DBusMessage. Free with Glib::object_unref().
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Creates a new DBusMessage that is a reply to method_call_message .
- Parameters
-
method_call_message A message of type DBUS_MESSAGE_TYPE_METHOD_CALL to create a reply message to.
- Returns
- DBusMessage. Free with Glib::object_unref().
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Creates a new DBusMessage for a signal emission.
- Parameters
-
path A valid object path. interface A valid D-Bus interface name. signal A valid signal name.
- Returns
- A DBusMessage. Free with Glib::object_unref().
Glib::ustring Gio::DBus::Message::get_arg0 | ( | ) | const |
Convenience to get the first item in the body of message .
- Returns
-
The string item or
nullptr
if the first item in the body of message is not a string.
void Gio::DBus::Message::get_body | ( | Glib::VariantBase & | value | ) | const |
Gets the body of a message.
The body is returned in value .
- Parameters
-
value Location in which to store the header.
ByteOrder Gio::DBus::Message::get_byte_order | ( | ) | const |
Gets the byte order of message .
- Returns
- The byte order.
Glib::ustring Gio::DBus::Message::get_destination | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
- Returns
- The value.
Glib::ustring Gio::DBus::Message::get_error_name | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
- Returns
- The value.
MessageFlags Gio::DBus::Message::get_flags | ( | ) | const |
Gets the flags for message .
- Returns
- Flags that are set (typically values from the DBusMessageFlags enumeration bitwise ORed together).
void Gio::DBus::Message::get_header | ( | Glib::VariantBase & | value , |
MessageHeaderField | header_field | ||
) | const |
Gets a header field on the message.
The header is returned in value .
- Parameters
-
value Location in which to store the header. header_field The header field type.
Glib::ArrayHandle <guchar> Gio::DBus::Message::get_header_fields | ( | ) | const |
Gets an array of all header fields on message that are set.
- Returns
- An array of header fields terminated by DBUS_MESSAGE_HEADER_FIELD_INVALID. Each element is a #guchar. Free with Glib::free().
Glib::ustring Gio::DBus::Message::get_interface | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
- Returns
- The value.
bool Gio::DBus::Message::get_locked | ( | ) | const |
Checks whether message is locked.
To monitor changes to this value, conncet to the Object::signal_notify() signal to listen for changes on the DBusMessage::property_locked() property.
- Returns
-
true
if message is locked,false
otherwise.
Glib::ustring Gio::DBus::Message::get_member | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
- Returns
- The value.
MessageType Gio::DBus::Message::get_message_type | ( | ) | const |
Gets the type of message .
- Returns
- A 8-bit unsigned integer (typically a value from the DBusMessageType enumeration).
guint32 Gio::DBus::Message::get_num_unix_fds | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
- Returns
- The value.
Glib::ustring Gio::DBus::Message::get_path | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_PATH header field.
- Returns
- The value.
guint32 Gio::DBus::Message::get_reply_serial | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
- Returns
- The value.
Glib::ustring Gio::DBus::Message::get_sender | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
- Returns
- The value.
guint32 Gio::DBus::Message::get_serial | ( | ) | const |
Glib::ustring Gio::DBus::Message::get_signature | ( | ) | const |
Convenience getter for the DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
- Returns
- The value.
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static |
Get the GType for this class, for use with the underlying GObject type system.
Glib::RefPtr < UnixFDList > Gio::DBus::Message::get_unix_fd_list | ( | ) |
Gets the UNIX file descriptors associated with message , if any.
This method is only available on UNIX.
- Returns
-
A
UnixFDList
or
nullptr
if no file descriptors are associated. Do not free, this object is owned by message .
Glib::RefPtr <const UnixFDList > Gio::DBus::Message::get_unix_fd_list | ( | ) | const |
Gets the UNIX file descriptors associated with message , if any.
This method is only available on UNIX.
- Returns
-
A
UnixFDList
or
nullptr
if no file descriptors are associated. Do not free, this object is owned by message .
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Provides access to the underlying C GObject.
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inline |
Provides access to the underlying C GObject.
GDBusMessage* Gio::DBus::Message::gobj_copy | ( | ) |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
void Gio::DBus::Message::lock | ( | ) |
Glib::ustring Gio::DBus::Message::print | ( | guint | indent | ) |
Produces a human-readable multi-line description of message .
The contents of the description has no ABI guarantees, the contents and formatting is subject to change at any time. Typical output looks something like this:
[C example ellipted] or
[C example ellipted]
- Parameters
-
indent Indentation level.
- Returns
- A string that should be freed with Glib::free().
Glib::PropertyProxy_ReadOnly < bool > Gio::DBus::Message::property_locked | ( | ) | const |
Whether the message is locked.
- Returns
- A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.
void Gio::DBus::Message::set_body | ( | const Glib::VariantBase & | body | ) |
Sets the body message .
As a side-effect the DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field is set to the type string of
body
(or cleared if
body
is
nullptr
).
If body is floating, message assumes ownership of body .
- Parameters
-
body Either nullptr
or a Variant that is a tuple.
void Gio::DBus::Message::set_byte_order | ( | ByteOrder | byte_order | ) |
Sets the byte order of message .
- Parameters
-
byte_order The byte order.
void Gio::DBus::Message::set_destination | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_DESTINATION header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_error_name | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_flags | ( | MessageFlags | flags | ) |
Sets the flags to set on message .
- Parameters
-
flags Flags for message that are set (typically values from the DBusMessageFlags enumeration bitwise ORed together).
void Gio::DBus::Message::set_header | ( | MessageHeaderField | header_field , |
const Glib::VariantBase & | value | ||
) |
Sets a header field on message .
If value is floating, message assumes ownership of value .
- Parameters
-
header_field A 8-bit unsigned integer (typically a value from the DBusMessageHeaderField enumeration). value A Variant to set the header field or nullptr
to clear the header field.
void Gio::DBus::Message::set_interface | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_INTERFACE header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_member | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_MEMBER header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_message_type | ( | MessageType | type | ) |
Sets message to be of type .
- Parameters
-
type A 8-bit unsigned integer (typically a value from the DBusMessageType enumeration).
void Gio::DBus::Message::set_num_unix_fds | ( | guint32 | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_path | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_PATH header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_reply_serial | ( | guint32 | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_REPLY_SERIAL header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_sender | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_SENDER header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_serial | ( | guint32 | serial | ) |
void Gio::DBus::Message::set_signature | ( | const Glib::ustring & | value | ) |
Convenience setter for the DBUS_MESSAGE_HEADER_FIELD_SIGNATURE header field.
- Parameters
-
value The value to set.
void Gio::DBus::Message::set_unix_fd_list | ( | const Glib::RefPtr < UnixFDList >& | fd_list | ) |
Sets the UNIX file descriptors associated with message .
As a side-effect the DBUS_MESSAGE_HEADER_FIELD_NUM_UNIX_FDS header field is set to the number of fds in
fd_list
(or cleared if
fd_list
is
nullptr
).
This method is only available on UNIX.
- Parameters
-
fd_list A UnixFDList or nullptr
.
guchar* Gio::DBus::Message::to_blob | ( | gsize & | out_size , |
CapabilityFlags |
capabilities
=
CAPABILITY_FLAGS_NONE
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) |
Serializes message to a blob.
The byte order returned by g_dbus_message_get_byte_order() will be used.
- Parameters
-
out_size Return location for size of generated blob. capabilities A DBusCapabilityFlags describing what protocol features are supported.
- Returns
-
A pointer to a valid binary D-Bus message of
out_size
bytes generated by
message
or
nullptr
if error is set. Free with Glib::free().
void Gio::DBus::Message::to_exception | ( | ) |
If
message
is not of type DBUS_MESSAGE_TYPE_ERROR does nothing and returns
false
.
Otherwise this method encodes the error in message as a Error using g_dbus_error_set_dbus_error() using the information in the DBUS_MESSAGE_HEADER_FIELD_ERROR_NAME header field of message as well as the first string item in message's body.
- Returns
-
true
if error was set,false
otherwise.
void Gio::DBus::Message::unset_unix_fd_list | ( | ) |
Clears the existing UNIX file descriptor list.
Friends And Related Function Documentation
|
related |
A Glib::wrap() method for this object.
- Parameters
-
object The C instance. take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
- Returns
- A C++ instance that wraps this C instance.