Gio::ActionGroup Class Reference

ActionGroup - a group of actions. More...

#include <giomm/actiongroup.h>

Inheritance diagram for Gio::ActionGroup:

Public Member Functions
	ActionGroup (ActionGroup &&src) noexcept
ActionGroup &	operator= (ActionGroup &&src) noexcept
	~ActionGroup () noexcept override
GActionGroup *	gobj ()
	Provides access to the underlying C GObject.
const GActionGroup *	gobj () const
	Provides access to the underlying C GObject.
bool	has_action (const Glib::ustring &action_name) const
	Checks if the named action exists within action_group.
std::vector< Glib::ustring >	list_actions () const
	Lists the actions contained within action_group.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantType &parameter_type, Glib::VariantBase &state_hint, Glib::VariantType &state_type, Glib::VariantBase & state)
	Queries all aspects of the named action within an action_group.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantType &parameter_type, Glib::VariantBase &state_hint, Glib::VariantType &state_type)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantType &parameter_type, Glib::VariantBase &state_hint, Glib::VariantBase & state)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantType &parameter_type, Glib::VariantBase &state_hint)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantBase &state_hint, Glib::VariantType &state_type, Glib::VariantBase & state)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantBase &state_hint, Glib::VariantType &state_type)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantBase &state_hint, Glib::VariantBase & state)
	A query_action() convenience overload.
bool	query_action (const Glib::ustring &action_name, bool &enabled, Glib::VariantBase &state_hint)
	A query_action() convenience overload.
bool	get_action_enabled (const Glib::ustring &action_name) const
	Checks if the named action within action_group is currently enabled.
Glib::VariantType	get_action_parameter_type (const Glib::ustring &action_name) const
	Queries the type of the parameter that must be given when activating the named action within action_group.
Glib::VariantType	get_action_state_type (const Glib::ustring &action_name) const
	Queries the type of the state of the named action within action_group.
template<typename T_Value >
void	get_action_state_hint (const Glib::ustring &action_name, T_Value & value) const
	Requests a hint about the valid range of values for the state of the named action within the action group.
Glib::VariantContainerBase	get_action_state_hint_variant (const Glib::ustring &action_name) const
	Requests a hint about the valid range of values for the state of the named action within action_group.
template<typename T_Value >
void	get_action_state (const Glib::ustring &action_name, T_Value & value) const
	Queries the current state of the named action within the action group.
Glib::VariantBase	get_action_state_variant (const Glib::ustring &action_name) const
	Queries the current state of the named action within action_group.
void	change_action_state (const Glib::ustring &action_name, const Glib::VariantBase & value)
	Request for the state of the named action within action_group to be changed to value.
void	activate_action (const Glib::ustring &action_name, const Glib::VariantBase &parameter)
	Activate the named action within action_group.
void	activate_action (const Glib::ustring &action_name)
	A activate_action() convenience overload.
void	action_added (const Glib::ustring &action_name)
	Emits the Gio::ActionGroup::signal_action_added() signal on action_group.
void	action_removed (const Glib::ustring &action_name)
	Emits the Gio::ActionGroup::signal_action_removed() signal on action_group.
void	action_enabled_changed (const Glib::ustring &action_name, bool enabled)
	Emits the Gio::ActionGroup::signal_action_enabled_changed() signal on action_group.
void	action_state_changed (const Glib::ustring &action_name, const Glib::VariantBase & state)
	Emits the Gio::ActionGroup::signal_action_state_changed() signal on action_group.
Glib::SignalProxyDetailed< void(const Glib::ustring &)>	signal_action_added (const Glib::ustring &action_name={})
Glib::SignalProxyDetailed< void(const Glib::ustring &, bool)>	signal_action_enabled_changed (const Glib::ustring &action_name={})
Glib::SignalProxyDetailed< void(const Glib::ustring &)>	signal_action_removed (const Glib::ustring &action_name={})
Glib::SignalProxyDetailed< void(const Glib::ustring &, const Glib::VariantBase &)>	signal_action_state_changed (const Glib::ustring &action_name={})
Public Member Functions inherited from Glib::Interface
	Interface ()
	A Default constructor.
	Interface (Interface &&src) noexcept
Interface &	operator= (Interface &&src) noexcept
	Interface (const Glib::Interface_Class &interface_class)
	Called by constructors of derived classes.
	Interface (GObject *castitem)
	Called by constructors of derived classes.
	~Interface () noexcept override
	Interface (const Interface &)=delete
Interface &	operator= (const Interface &)=delete
GObject *	gobj ()
const GObject *	gobj () const
Public Member Functions inherited from Glib::ObjectBase
	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.
void	get_property_value (const Glib::ustring & property_name, Glib::ValueBase & value) const
	You probably want to use a specific property_*() accessor method instead.
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.
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.
template<class PropertyType >
PropertyType	get_property (const Glib::ustring & property_name) const
	You probably want to use a specific property_*() accessor method instead.
sigc::connection	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.
sigc::connection	connect_property_changed (const Glib::ustring & property_name, sigc::slot< void()> &&slot)
	You can use the signal_changed() signal of the property proxy instead.
void	freeze_notify ()
	Increases the freeze count on object.
void	thaw_notify ()
	Reverts the effect of a previous call to freeze_notify().
virtual void	reference () const
	Increment the reference count for this object.
virtual void	unreference () const
	Decrement the reference count for this object.
GObject *	gobj ()
	Provides access to the underlying C GObject.
const GObject *	gobj () const
	Provides access to the underlying C GObject.
GObject *	gobj_copy () const
	Give a ref-ed copy to someone. Use for direct struct access.

Static Public Member Functions
static void	add_interface (GType gtype_implementer)
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

Protected Member Functions
	ActionGroup ()
	You should derive from this class to use it.
virtual bool	has_action_vfunc (const Glib::ustring & name) const
virtual std::vector< Glib::ustring >	list_actions_vfunc () const
virtual bool	get_action_enabled_vfunc (const Glib::ustring & name) const
virtual Glib::VariantType	get_action_parameter_type_vfunc (const Glib::ustring & name) const
virtual Glib::VariantType	get_action_state_type_vfunc (const Glib::ustring & name) const
virtual Glib::VariantBase	get_action_state_hint_vfunc (const Glib::ustring & name) const
virtual Glib::VariantBase	get_action_state_vfunc (const Glib::ustring & name) const
virtual void	change_action_state_vfunc (const Glib::ustring & name, const Glib::VariantBase & value)
virtual void	activate_action_vfunc (const Glib::ustring & name, const Glib::VariantBase &parameter)
virtual void	on_action_added (const Glib::ustring &action_name)
	This is a default handler for the signal signal_action_added().
virtual void	on_action_enabled_changed (const Glib::ustring &action_name, bool enabled)
	This is a default handler for the signal signal_action_enabled_changed().
virtual void	on_action_removed (const Glib::ustring &action_name)
	This is a default handler for the signal signal_action_removed().
virtual void	on_action_state_changed (const Glib::ustring &action_name, const Glib::VariantBase & value)
	This is a default handler for the signal signal_action_state_changed().
Protected Member Functions inherited from Glib::ObjectBase
	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.
	ObjectBase (const char *custom_type_name)
	A derived constructor always overrides this choice.
	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.
	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 Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gio::ActionGroup >	wrap (GActionGroup *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

ActionGroup - a group of actions.

ActionGroup represents a group of actions.

Each action in the group has a unique name (which is a string). All method calls, except list_actions() take the name of an action as an argument.

The GActionGroup API is meant to be the 'public' API to the action group. The calls here are exactly the interaction that 'external forces' (eg: UI, incoming D-Bus messages, etc.) are supposed to have with actions. 'Internal' APIs (ie: ones meant only to be accessed by the action group implementation) are found on subclasses. This is why you will find – for example – get_action_enabled() but not an equivalent set() call.

Signals are emitted on the action group in response to state changes on individual actions.

Constructor & Destructor Documentation

ActionGroup() [1/2]

Gio::ActionGroup::ActionGroup ( )

protected

You should derive from this class to use it.

ActionGroup() [2/2]

Gio::ActionGroup::ActionGroup ( ActionGroup &&  src )

noexcept

~ActionGroup()

Gio::ActionGroup::~ActionGroup ( )

overridenoexcept

Member Function Documentation

action_added()

void Gio::ActionGroup::action_added

(

const Glib::ustring &

action_name

)

Emits the Gio::ActionGroup::signal_action_added() signal on action_group.

This function should only be called by Gio::ActionGroup implementations.

Since glibmm 2.28:

Parameters

action_name

The name of an action in the group.

action_enabled_changed()

void Gio::ActionGroup::action_enabled_changed	(	const Glib::ustring &	action_name,
		bool	enabled
	)

Emits the Gio::ActionGroup::signal_action_enabled_changed() signal on action_group.

This function should only be called by Gio::ActionGroup implementations.

Since glibmm 2.28:

Parameters

action_name	The name of an action in the group.
enabled	Whether the action is now enabled.

action_removed()

void Gio::ActionGroup::action_removed

(

const Glib::ustring &

action_name

)

Emits the Gio::ActionGroup::signal_action_removed() signal on action_group.

This function should only be called by Gio::ActionGroup implementations.

Since glibmm 2.28:

Parameters

action_name

The name of an action in the group.

action_state_changed()

void Gio::ActionGroup::action_state_changed	(	const Glib::ustring &	action_name,
		const Glib::VariantBase &	state
	)

Emits the Gio::ActionGroup::signal_action_state_changed() signal on action_group.

This function should only be called by Gio::ActionGroup implementations.

Since glibmm 2.28:

Parameters

action_name	The name of an action in the group.
state	The new state of the named action.

activate_action() [1/2]

void Gio::ActionGroup::activate_action

(

const Glib::ustring &

action_name

)

A activate_action() convenience overload.

activate_action() [2/2]

void Gio::ActionGroup::activate_action	(	const Glib::ustring &	action_name,
		const Glib::VariantBase &	parameter
	)

Activate the named action within action_group.

If the action is expecting a parameter, then the correct type of parameter must be given as parameter. If the action is expecting no parameters then parameter must be nullptr. See Gio::ActionGroup::get_action_parameter_type().

If the Gio::ActionGroup implementation supports asynchronous remote activation over D-Bus, this call may return before the relevant D-Bus traffic has been sent, or any replies have been received. In order to block on such asynchronous activation calls, Gio::DBusConnection::flush() should be called prior to the code, which depends on the result of the action activation. Without flushing the D-Bus connection, there is no guarantee that the action would have been activated.

The following code which runs in a remote app instance, shows an example of a ‘quit’ action being activated on the primary app instance over D-Bus. Here Gio::DBusConnection::flush() is called before exit(). Without g_dbus_connection_flush(), the ‘quit’ action may fail to be activated on the primary instance.

[C example ellipted]

Since glibmm 2.28:

Parameters

action_name	The name of the action to activate.
parameter	Parameters to the activation.

activate_action_vfunc()

virtual void Gio::ActionGroup::activate_action_vfunc ( const Glib::ustring &  name, const Glib::VariantBase &  parameter  )

protectedvirtual

add_interface()

static void Gio::ActionGroup::add_interface ( GType  gtype_implementer )

static

change_action_state()

void Gio::ActionGroup::change_action_state	(	const Glib::ustring &	action_name,
		const Glib::VariantBase &	value
	)

Request for the state of the named action within action_group to be changed to value.

The action must be stateful and value must be of the correct type. See Gio::ActionGroup::get_action_state_type().

This call merely requests a change. The action may refuse to change its state or may change its state to something other than value. See Gio::ActionGroup::get_action_state_hint().

If the value GVariant is floating, it is consumed.

Since glibmm 2.28:

Parameters

action_name	The name of the action to request the change on.
value	The new state.

change_action_state_vfunc()

virtual void Gio::ActionGroup::change_action_state_vfunc ( const Glib::ustring &  name, const Glib::VariantBase &  value  )

protectedvirtual

get_action_enabled()

bool Gio::ActionGroup::get_action_enabled

(

const Glib::ustring &

action_name

)

const

Checks if the named action within action_group is currently enabled.

An action must be enabled in order to be activated or in order to have its state changed from outside callers.

Since glibmm 2.28:

Parameters

action_name

The name of the action to query.

Returns

Whether the action is currently enabled.

get_action_enabled_vfunc()

virtual bool Gio::ActionGroup::get_action_enabled_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

get_action_parameter_type()

Glib::VariantType Gio::ActionGroup::get_action_parameter_type

(

const Glib::ustring &

action_name

)

const

Queries the type of the parameter that must be given when activating the named action within action_group.

When activating the action using Gio::ActionGroup::activate_action(), the Glib::Variant given to that function must be of the type returned by this function.

In the case that this function returns nullptr, you must not give any Glib::Variant, but nullptr instead.

The parameter type of a particular action will never change but it is possible for an action to be removed and for a new action to be added with the same name but a different parameter type.

Since glibmm 2.28:

Parameters

action_name

The name of the action to query.

Returns

The parameter type.

get_action_parameter_type_vfunc()

virtual Glib::VariantType Gio::ActionGroup::get_action_parameter_type_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

get_action_state()

template <typename T_Value >

void Gio::ActionGroup::get_action_state	(	const Glib::ustring &	action_name,
		T_Value &	value
	)		const

Queries the current state of the named action within the action group.

If the action is not stateful then a null Variant will be returned. If the action is stateful then the type of the return value is the type given by get_action_state_type().

Parameters

action_name	The name of the action to query.
value	This will be set to the current state of the action.

get_action_state_hint()

template <typename T_Value >

void Gio::ActionGroup::get_action_state_hint	(	const Glib::ustring &	action_name,
		T_Value &	value
	)		const

Requests a hint about the valid range of values for the state of the named action within the action group.

If a null Variant is returned it either means that the action is not stateful or that there is no hint about the valid range of values for the state of the action.

If a ariant array is returned then each item in the array is a possible value for the state. If Variant pair (ie: two-tuple) is returned then the tuple specifies the inclusive lower and upper bound of valid values for the state.

In any case, the information is merely a hint. It may be possible to have a state value outside of the hinted range and setting a value within the range may fail.

Parameters

action_name	The name of the action to query.
value	This will be set to the state range hint.

get_action_state_hint_variant()

Glib::VariantContainerBase Gio::ActionGroup::get_action_state_hint_variant

(

const Glib::ustring &

action_name

)

const

Requests a hint about the valid range of values for the state of the named action within action_group.

If nullptr is returned it either means that the action is not stateful or that there is no hint about the valid range of values for the state of the action.

If a Glib::Variant array is returned then each item in the array is a possible value for the state. If a Glib::Variant pair (ie: two-tuple) is returned then the tuple specifies the inclusive lower and upper bound of valid values for the state.

In any case, the information is merely a hint. It may be possible to have a state value outside of the hinted range and setting a value within the range may fail.

The return value (if non-nullptr) should be freed with Glib::Variant::unref() when it is no longer required.

Since glibmm 2.28:

Parameters

action_name

The name of the action to query.

Returns

The state range hint.

get_action_state_hint_vfunc()

virtual Glib::VariantBase Gio::ActionGroup::get_action_state_hint_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

get_action_state_type()

Glib::VariantType Gio::ActionGroup::get_action_state_type

(

const Glib::ustring &

action_name

)

const

Queries the type of the state of the named action within action_group.

If the action is stateful then this function returns the Glib::VariantType of the state. All calls to Gio::ActionGroup::change_action_state() must give a Glib::Variant of this type and Gio::ActionGroup::get_action_state() will return a Glib::Variant of the same type.

If the action is not stateful then this function will return nullptr. In that case, Gio::ActionGroup::get_action_state() will return nullptr and you must not call Gio::ActionGroup::change_action_state().

The state type of a particular action will never change but it is possible for an action to be removed and for a new action to be added with the same name but a different state type.

Since glibmm 2.28:

Parameters

action_name

The name of the action to query.

Returns

The state type, if the action is stateful.

get_action_state_type_vfunc()

virtual Glib::VariantType Gio::ActionGroup::get_action_state_type_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

get_action_state_variant()

Glib::VariantBase Gio::ActionGroup::get_action_state_variant

(

const Glib::ustring &

action_name

)

const

Queries the current state of the named action within action_group.

If the action is not stateful then nullptr will be returned. If the action is stateful then the type of the return value is the type given by Gio::ActionGroup::get_action_state_type().

The return value (if non-nullptr) should be freed with Glib::Variant::unref() when it is no longer required.

Since glibmm 2.28:

Parameters

action_name

The name of the action to query.

Returns

The current state of the action.

get_action_state_vfunc()

virtual Glib::VariantBase Gio::ActionGroup::get_action_state_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

get_type()

static GType Gio::ActionGroup::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

gobj() [1/2]

GActionGroup * Gio::ActionGroup::gobj ( )

inline

Provides access to the underlying C GObject.

gobj() [2/2]

const GActionGroup * Gio::ActionGroup::gobj ( ) const

inline

Provides access to the underlying C GObject.

has_action()

bool Gio::ActionGroup::has_action

(

const Glib::ustring &

action_name

)

const

Checks if the named action exists within action_group.

Since glibmm 2.28:

Parameters

action_name

The name of the action to check for.

Returns

Whether the named action exists.

has_action_vfunc()

virtual bool Gio::ActionGroup::has_action_vfunc ( const Glib::ustring &  name ) const

protectedvirtual

list_actions()

std::vector< Glib::ustring > Gio::ActionGroup::list_actions

(

)

const

Lists the actions contained within action_group.

The caller is responsible for freeing the list with glib_strfreev() when it is no longer required.

Since glibmm 2.28:

Returns

A nullptr-terminated array of the names of the actions in the group.

list_actions_vfunc()

virtual std::vector< Glib::ustring > Gio::ActionGroup::list_actions_vfunc ( ) const

protectedvirtual

on_action_added()

virtual void Gio::ActionGroup::on_action_added ( const Glib::ustring &  action_name )

protectedvirtual

This is a default handler for the signal signal_action_added().

on_action_enabled_changed()

virtual void Gio::ActionGroup::on_action_enabled_changed ( const Glib::ustring &  action_name, bool  enabled  )

protectedvirtual

This is a default handler for the signal signal_action_enabled_changed().

on_action_removed()

virtual void Gio::ActionGroup::on_action_removed ( const Glib::ustring &  action_name )

protectedvirtual

This is a default handler for the signal signal_action_removed().

on_action_state_changed()

virtual void Gio::ActionGroup::on_action_state_changed ( const Glib::ustring &  action_name, const Glib::VariantBase &  value  )

protectedvirtual

This is a default handler for the signal signal_action_state_changed().

operator=()

ActionGroup & Gio::ActionGroup::operator= ( ActionGroup &&  src )

noexcept

query_action() [1/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantBase &	state_hint
	)

A query_action() convenience overload.

query_action() [2/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantBase &	state_hint,
		Glib::VariantBase &	state
	)

A query_action() convenience overload.

query_action() [3/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantBase &	state_hint,
		Glib::VariantType &	state_type
	)

A query_action() convenience overload.

query_action() [4/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantBase &	state_hint,
		Glib::VariantType &	state_type,
		Glib::VariantBase &	state
	)

A query_action() convenience overload.

query_action() [5/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantType &	parameter_type,
		Glib::VariantBase &	state_hint
	)

A query_action() convenience overload.

query_action() [6/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantType &	parameter_type,
		Glib::VariantBase &	state_hint,
		Glib::VariantBase &	state
	)

A query_action() convenience overload.

query_action() [7/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantType &	parameter_type,
		Glib::VariantBase &	state_hint,
		Glib::VariantType &	state_type
	)

A query_action() convenience overload.

query_action() [8/8]

bool Gio::ActionGroup::query_action	(	const Glib::ustring &	action_name,
		bool &	enabled,
		Glib::VariantType &	parameter_type,
		Glib::VariantBase &	state_hint,
		Glib::VariantType &	state_type,
		Glib::VariantBase &	state
	)

Queries all aspects of the named action within an action_group.

This function acquires the information available from Gio::ActionGroup::has_action(), Gio::ActionGroup::get_action_enabled(), Gio::ActionGroup::get_action_parameter_type(), Gio::ActionGroup::get_action_state_type(), Gio::ActionGroup::get_action_state_hint() and Gio::ActionGroup::get_action_state() with a single function call.

This provides two main benefits.

The first is the improvement in efficiency that comes with not having to perform repeated lookups of the action in order to discover different things about it. The second is that implementing Gio::ActionGroup can now be done by only overriding this one virtual function.

The interface provides a default implementation of this function that calls the individual functions, as required, to fetch the information. The interface also provides default implementations of those functions that call this function. All implementations, therefore, must override either this function or all of the others.

If the action exists, true is returned and any of the requested fields (as indicated by having a non-nullptr reference passed in) are filled. If the action doesn’t exist, false is returned and the fields may or may not have been modified.

Since glibmm 2.32:

Parameters

action_name	The name of an action in the group.
enabled	If the action is presently enabled.
parameter_type	The parameter type, or nullptr if none needed.
state_type	The state type, or nullptr if stateless.
state_hint	The state hint, or nullptr if none.
state	The current state, or nullptr if stateless.

Returns

true if the action exists, else false.

signal_action_added()

Glib::SignalProxyDetailed< void(const Glib::ustring &)> Gio::ActionGroup::signal_action_added

(

const Glib::ustring &

action_name = {}

)

Slot Prototype:

void on_my_action_added(const Glib::ustring& action_name)

Flags: Run Last

Signals that a new action was just added to the group.

This signal is emitted after the action has been added and is now visible.

Since glibmm 2.28:

Parameters

action_name

The name of the action in action_group.

signal_action_enabled_changed()

Glib::SignalProxyDetailed< void(const Glib::ustring &, bool)> Gio::ActionGroup::signal_action_enabled_changed

(

const Glib::ustring &

action_name = {}

)

Slot Prototype:

void on_my_action_enabled_changed(const Glib::ustring& action_name, bool enabled)

Flags: Run Last

Signals that the enabled status of the named action has changed.

Since glibmm 2.28:

Parameters

action_name	The name of the action in action_group.
enabled	Whether the action is enabled.

signal_action_removed()

Glib::SignalProxyDetailed< void(const Glib::ustring &)> Gio::ActionGroup::signal_action_removed

(

const Glib::ustring &

action_name = {}

)

Slot Prototype:

void on_my_action_removed(const Glib::ustring& action_name)

Flags: Run Last

Signals that an action is just about to be removed from the group.

This signal is emitted before the action is removed, so the action is still visible and can be queried from the signal handler.

Since glibmm 2.28:

Parameters

action_name

The name of the action in action_group.

signal_action_state_changed()

Glib::SignalProxyDetailed< void(const Glib::ustring &, const Glib::VariantBase &)> Gio::ActionGroup::signal_action_state_changed

(

const Glib::ustring &

action_name = {}

)

Slot Prototype:

void on_my_action_state_changed(const Glib::ustring& action_name, const Glib::VariantBase& value)

Flags: Run Last, Must Collect

Signals that the state of the named action has changed.

Since glibmm 2.28:

Parameters

action_name	The name of the action in action_group.
value	The new value of the state.

Friends And Related Symbol Documentation

wrap()

Glib::RefPtr< Gio::ActionGroup > wrap ( GActionGroup *  object, bool  take_copy = false  )

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.