The System Settings API provides APIs for sharing configuration over a system. system_settings_key_e shows all of the supporting APIs in System-Settings.

Required Header

#include <system_settings.h>

Overview

System Settings API provides functions for getting the system configuration related to user preferences. The main features of the System Settings API include accessing system-wide configurations, such as ringtones, wallpapers, and etc.

Related Features

This API is related with the following features:

It is recommended to design feature related codes in your application for reliability.

You can check if a device supports the related features for this API by using System Information,thereby controlling the procedure of your application.

To ensure your application is only running on the device with specific features, please define the features in your manifest file using the manifest editor in the SDK.

More details on featuring your application can be found from Feature Element.

The table below shows additional related features on which System Settings keys depend.

Additional Related Feature	System-Settings Keys
http://tizen.org/feature/systemsetting.home_screen	SYSTEM_SETTINGS_KEY_WALLPAPER_HOME_SCREEN
http://tizen.org/feature/systemsetting.lock_screen	SYSTEM_SETTINGS_KEY_WALLPAPER_LOCK_SCREEN
http://tizen.org/feature/systemsetting.lock_screen	SYSTEM_SETTINGS_KEY_LOCKSCREEN_APP
http://tizen.org/feature/systemsetting.incoming_call	SYSTEM_SETTINGS_KEY_INCOMING_CALL_RINGTONE
http://tizen.org/feature/systemsetting.incoming_call	SYSTEM_SETTINGS_KEY_SOUND_NOTIFICATION
http://tizen.org/feature/systemsetting.notification_email	SYSTEM_SETTINGS_KEY_EMAIL_ALERT_RINGTONE
http://tizen.org/feature/systemsetting.font	SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE
	SYSTEM_SETTINGS_KEY_FONT_TYPE
	SYSTEM_SETTINGS_KEY_FONT_SIZE
http://tizen.org/feature/network.wifi	SYSTEM_SETTINGS_KEY_NETWORK_WIFI_NOTIFICATION
http://tizen.org/feature/network.telephony	SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE
	SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE_PKG_LIST
	SYSTEM_SETTINGS_KEY_AUTOMATIC_TIME_UPDATE

Functions
int	system_settings_set_value_int (system_settings_key_e key, int value)
	Sets the system settings value associated with the given key as an integer.
int	system_settings_get_value_int (system_settings_key_e key, int *value)
	Gets the system settings value associated with the given key as an integer.
int	system_settings_set_value_bool (system_settings_key_e key, bool value)
	Sets the system settings value associated with the given key as a boolean.
int	system_settings_get_value_bool (system_settings_key_e key, bool *value)
	Gets the system settings value associated with the given key as a boolean.
int	system_settings_set_value_string (system_settings_key_e key, const char *value)
	Sets the system settings value associated with the given key as a string.
int	system_settings_get_value_string (system_settings_key_e key, char **value)
	Gets the system settings value associated with the given key as a string.
int	system_settings_set_changed_cb (system_settings_key_e key, system_settings_changed_cb callback, void *user_data)
	Sets a change event callback for the given system settings key.
int	system_settings_unset_changed_cb (system_settings_key_e key)
	Unsets the callback function.
int	system_settings_foreach_value_string (system_settings_key_e key, system_settings_iter_cb callback, void *user_data)
	Iterate the system settings value associated with the given key as a string type.
int	system_settings_add_value_string (system_settings_key_e key, const char *value)
	Adds the system settings value associated with the given key as a string type if it supports List iteration.
int	system_settings_delete_value_string (system_settings_key_e key, const char *value)
	Delete the system settings value associated with the given key as an string type if it supports List iteration.
int	system_settings_add_changed_cb (system_settings_key_e key, system_settings_changed_cb callback, void *user_data)
	Adds a change event callback for the given system settings key.
int	system_settings_remove_changed_cb (system_settings_key_e key, system_settings_changed_cb callback)
	Removes a change event callback function.
Typedefs
typedef void(*	system_settings_changed_cb )(system_settings_key_e key, void *user_data)
	Called when the system settings changes.
typedef bool(*	system_settings_iter_cb )(int index, const char value, void cb_data)
	Called to get each string value from string typed list.

Typedef Documentation

typedef void(* system_settings_changed_cb)(system_settings_key_e key, void *user_data)

Called when the system settings changes.

Since :: 2.3

Parameters:

[in]	key	The key name of the system settings changed system settings
[in]	user_data	The user data passed from the callback registration function

Precondition:: system_settings_set_changed_cb() will invoke this callback function.

See also:: system_settings_set_changed_cb(); system_settings_unset_changed_cb()

typedef bool(* system_settings_iter_cb)(int index, const char *value, void *cb_data)

Called to get each string value from string typed list.

Warning:: This is not for use by third-party applications.

Since :: 3.0

Parameters:

[in]	index	zero based number indicating index of node in a list
[in]	value	value returned from the list
[in]	cb_data	The user data passed from the foreach function

Returns:: true to continue with the next iteration of the loop, otherwise false to break out of the loop

Enumeration Type Documentation

enum system_settings_error_e

Enumeration for system settings error.

Since :: 2.3

Enumerator:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_OUT_OF_MEMORY	Out of memory
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission denied
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	Not supported (Since 2.3.1)
SYSTEM_SETTINGS_ERROR_CALL_UNSUPPORTED_API	Not supported (Since 2.3.1)
SYSTEM_SETTINGS_ERROR_LOCKSCREEN_APP_PASSWORD_MODE	Current lock screen app set 'password' type

enum system_settings_font_size_e

Enumeration for font size.

Since :: 2.3

Enumerator:

SYSTEM_SETTINGS_FONT_SIZE_SMALL	A small size
SYSTEM_SETTINGS_FONT_SIZE_NORMAL	A normal size
SYSTEM_SETTINGS_FONT_SIZE_LARGE	A large size
SYSTEM_SETTINGS_FONT_SIZE_HUGE	A huge size
SYSTEM_SETTINGS_FONT_SIZE_GIANT	A giant size

enum system_settings_idle_lock_state_e

Enumeration for Idle Lock State.

Since :: 2.3.1

Enumerator:

SYSTEM_SETTINGS_LOCK_STATE_UNLOCK	Device is unlocked
SYSTEM_SETTINGS_LOCK_STATE_LOCK	Device is locked
SYSTEM_SETTINGS_LOCK_STATE_LAUNCHING_LOCK	Device is being locked

enum system_settings_key_e

Enumeration for System Settings Key.

Since :: 2.3

Enumerator:

SYSTEM_SETTINGS_KEY_INCOMING_CALL_RINGTONE	(string) The file path of the current ringtone
SYSTEM_SETTINGS_KEY_WALLPAPER_HOME_SCREEN	(string) The file path of the current home screen wallpaper
SYSTEM_SETTINGS_KEY_WALLPAPER_LOCK_SCREEN	(string) The file path of the current lock screen wallpaper
SYSTEM_SETTINGS_KEY_FONT_SIZE	(int) The current system font size
SYSTEM_SETTINGS_KEY_FONT_TYPE	(string) The current system font type
SYSTEM_SETTINGS_KEY_MOTION_ACTIVATION	(bool) Indicates whether the motion service is activated
SYSTEM_SETTINGS_KEY_EMAIL_ALERT_RINGTONE	(string) The file path of the current email alert ringtone
SYSTEM_SETTINGS_KEY_USB_DEBUGGING_ENABLED	(bool) Indicates whether the USB debugging is enabled (Since 2.4)
SYSTEM_SETTINGS_KEY_3G_DATA_NETWORK_ENABLED	(bool) Indicates whether the 3G data network is enabled (Since 2.4)
SYSTEM_SETTINGS_KEY_LOCKSCREEN_APP	(string) Indicates lockscreen app pkg name
SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE	(string) The current system default font type (only support Get)
SYSTEM_SETTINGS_KEY_LOCALE_COUNTRY	(string) Indicates the current country setting in the <LANGUAGE>_<REGION> syntax. The country setting is in the ISO 639-2 format, and the region setting is in the ISO 3166-1 alpha-2 format
SYSTEM_SETTINGS_KEY_LOCALE_LANGUAGE	(string) Indicates the current language setting in the <LANGUAGE>_<REGION> syntax. The language setting is in the ISO 639-2 format and the region setting is in the ISO 3166-1 alpha-2 format.
SYSTEM_SETTINGS_KEY_LOCALE_TIMEFORMAT_24HOUR	(bool) Indicates whether the 24-hour clock is used. If the value is `false`, the 12-hour clock is used.
SYSTEM_SETTINGS_KEY_LOCALE_TIMEZONE	(string) Indicates the current time zone.
SYSTEM_SETTINGS_KEY_TIME_CHANGED	(int) Once System changes time, this event occurs to notify time change.
SYSTEM_SETTINGS_KEY_SOUND_LOCK	GET (bool) Indicates whether the screen lock sound is enabled on the device. ex) LCD on/off sound
SYSTEM_SETTINGS_KEY_SOUND_SILENT_MODE	GET (bool) Indicates whether the device is in the silent mode.
SYSTEM_SETTINGS_KEY_SOUND_TOUCH	GET (bool) Indicates whether the screen touch sound is enabled on the device.
SYSTEM_SETTINGS_KEY_DISPLAY_SCREEN_ROTATION_AUTO	GET (bool) Indicates whether rotation control is automatic.
SYSTEM_SETTINGS_KEY_DEVICE_NAME	GET (string) Indicates device name.
SYSTEM_SETTINGS_KEY_MOTION_ENABLED	GET (bool) Indicates whether the device user has enabled the motion feature.
SYSTEM_SETTINGS_KEY_NETWORK_WIFI_NOTIFICATION	GET (bool) Indicates whether Wi-Fi-related notifications are enabled on the device.
SYSTEM_SETTINGS_KEY_NETWORK_FLIGHT_MODE	GET (bool) Indicates whether the device is in the flight mode.
SYSTEM_SETTINGS_KEY_SCREEN_BACKLIGHT_TIME	(int) Indicates the backlight time (in seconds).
SYSTEM_SETTINGS_KEY_SOUND_NOTIFICATION	(string) Indicates the file path of the current notification tone set by the user.
SYSTEM_SETTINGS_KEY_SOUND_NOTIFICATION_REPETITION_PERIOD	(int) Indicates the time period for notification repetitions.
SYSTEM_SETTINGS_KEY_LOCK_STATE	(int) Indicates the current lock state
SYSTEM_SETTINGS_KEY_ADS_ID	(string) Indicates Ads ID for each device (Since 3.0)
SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE	(int) Indicates Ultra Data Save status, one of system_settings_uds_state_e values (Since 4.0)
SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE_PKG_LIST	(string) Indicates Ultra Data Save Package List (Since 4.0), the list is a string containing whitelisted package names separated with semicolons (;)
SYSTEM_SETTINGS_KEY_ACCESSIBILITY_TTS	GET (bool) Indicates whether the accessibility TTS is enabled on the device. (Since 4.0)
SYSTEM_SETTINGS_KEY_VIBRATION	(bool) Indicates whether vibration is enabled on the device. (Since 4.0)
SYSTEM_SETTINGS_KEY_AUTOMATIC_TIME_UPDATE	(bool) Indicates whether updating time automatically is enabled on the device. (Since 5.0)
SYSTEM_SETTINGS_KEY_DEVELOPER_OPTION_STATE	(bool) Indicates whether developer option state is enabled on the device. (Since 5.0)

enum system_settings_uds_state_e

Enumeration for Ultra Data Save.

Since :: 4.0

Enumerator:

SYSTEM_SETTINGS_UDS_OFF	OFF
SYSTEM_SETTINGS_UDS_ON	ON
SYSTEM_SETTINGS_UDS_ON_WHITELISTED	UDS on and the app is whitelisted

Function Documentation

int system_settings_add_changed_cb	(	system_settings_key_e	key,
		system_settings_changed_cb	callback,
		void *	user_data
	)

Adds a change event callback for the given system settings key.

The difference between this function and system_settings_set_changed_cb() is that system_settings_set_changed_cb() can set only one callback for a given key, while system_settings_add_changed_cb() can set multiple callbacks for a given key.

Since :: 5.0

Remarks:: The key cannot be SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE. When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	callback	The callback function to invoke
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

Postcondition:: system_settings_changed_cb() will be invoked.

See also:: system_settings_remove_changed_cb(); system_settings_changed_cb()

int system_settings_add_value_string	(	system_settings_key_e	key,
		const char *	value
	)

Adds the system settings value associated with the given key as a string type if it supports List iteration.

Warning:: This is not for use by third-party applications.

Since :: 3.0

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	value	string typed value to be appended

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_delete_value_string	(	system_settings_key_e	key,
		const char *	value
	)

Delete the system settings value associated with the given key as an string type if it supports List iteration.

Warning:: This is not for use by third-party applications.

Since :: 3.0

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	value	string typed value to be removed

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_foreach_value_string	(	system_settings_key_e	key,
		system_settings_iter_cb	callback,
		void *	user_data
	)

Iterate the system settings value associated with the given key as a string type.

Warning:: This is not for use by third-party applications.

Since :: 3.0

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	callback	The callback-function name for iteration
[in]	user_data	The user data passed from caller-side

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_get_value_bool	(	system_settings_key_e	key,
		bool *	value
	)

Gets the system settings value associated with the given key as a boolean.

Since :: 2.3

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The current system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

Warning:: http://tizen.org/privilege/systemsettings (public level privilege) MUST NOT be declared to use this function since 2.3.1.

int system_settings_get_value_int	(	system_settings_key_e	key,
		int *	value
	)

Gets the system settings value associated with the given key as an integer.

Since :: 2.3

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The current system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

Warning:: http://tizen.org/privilege/systemsettings (public level privilege) MUST NOT be declared to use this function since 2.3.1.

int system_settings_get_value_string	(	system_settings_key_e	key,
		char **	value
	)

Gets the system settings value associated with the given key as a string.

Since :: 2.3

Remarks:: You must release value using free(). When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The current system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

Warning:: http://tizen.org/privilege/systemsettings (public level privilege) MUST NOT be declared to use this function since 2.3.1.

int system_settings_remove_changed_cb	(	system_settings_key_e	key,
		system_settings_changed_cb	callback
	)

Removes a change event callback function.

The difference between this function and system_settings_unset_changed_cb() is that system_settings_unset_changed_cb() unsets the callback set with system_settings_set_changed_cb(), while system_settings_remove_changed_cb() removes callbacks added with system_settings_add_changed_cb()

Since :: 5.0

Remarks:: The key cannot be SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE. When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	callback	The callback function to be removed

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

See also:: system_settings_add_changed_cb()

int system_settings_set_changed_cb	(	system_settings_key_e	key,
		system_settings_changed_cb	callback,
		void *	user_data
	)

Sets a change event callback for the given system settings key.

Since :: 2.3

Remarks:: SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE is not available for set_changed_cb. When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[in]	callback	The callback function to invoke
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

Postcondition:: system_settings_changed_cb() will be invoked.

See also:: system_settings_unset_changed_cb(); system_settings_changed_cb()

Warning:: http://tizen.org/privilege/systemsettings (public level privilege) MUST NOT be declared to use this function since 2.3.1.

int system_settings_set_value_bool	(	system_settings_key_e	key,
		bool	value
	)

Sets the system settings value associated with the given key as a boolean.

Warning:: This is not for use by third-party applications.

Since :: 2.3

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The new system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_set_value_int	(	system_settings_key_e	key,
		int	value
	)

Sets the system settings value associated with the given key as an integer.

Warning:: This is not for use by third-party applications.

Since :: 2.3

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The new system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_set_value_string	(	system_settings_key_e	key,
		const char *	value
	)

Sets the system settings value associated with the given key as a string.

Warning:: This is not for use by third-party applications.

Since :: 2.3

Privilege Level:: platform

Privilege:: http://tizen.org/privilege/systemsettings.admin

Remarks:: SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE is not available for setting. When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in]	key	The key name of the system settings
[out]	value	The new system settings value of the given key

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_IO_ERROR	Internal I/O error
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

int system_settings_unset_changed_cb ( system_settings_key_e key )

Unsets the callback function.

Since :: 2.3

Remarks:: SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE is not available for set_changed_cb. When the feature related to the key is not supported on the device, SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED will be returned.

Parameters:

[in] key The key name of the system settings

Returns:: 0 on success, otherwise a negative error value

Return values:

SYSTEM_SETTINGS_ERROR_NONE	Successful
SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER	Invalid parameter
SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED	Permission violation error
SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED	The related feature is not supported on the device

See also:: system_settings_set_changed_cb()

Warning:: http://tizen.org/privilege/systemsettings (public level privilege) MUST NOT be declared to use this function since 2.3.1.

Required Header

Overview

Related Features

Functions

Typedefs

Typedef Documentation

Enumeration Type Documentation

Function Documentation