fix API descriptionsubmit/tizen_3.0/20161222.014602submit/tizen_3.0.m2/20170104.093749submit/tizen/20170105.005252accepted/tizen/wearable/20170105.223124accepted/tizen/tv/20170105.223104accepted/tizen/mobile/20170105.223035accepted/tizen/ivi/20170105.223145accepted/tizen/common/20170109.202241accepted/tizen/3.0/wearable/20161226.024745accepted/tizen/3.0/tv/20161226.024732accepted/tizen/3.0/mobile/20161226.024712accepted/tizen/3.0/ivi/20161226.024758accepted/tizen/3.0/common/20161227.101312accepted/tizen/3.0.m2/wearable/20170104.122807accepted/tizen/3.0.m2/tv/20170104.122457accepted/tizen/3.0.m2/mobile/20170104.122159

Change-Id: Ie12f31f8ba570d4ab328f19628aefd9e02e166c4
Signed-off-by: Daehyeon Jung <darrenh.jung@samsung.com>

3 files changed, 288 insertions, 254 deletions

diff --git a/doc/widget_service_doc.h b/doc/widget_service_doc.h
index c94d8bc..b173f9d 100755
--- a/doc/widget_service_doc.h
+++ b/doc/widget_service_doc.h
@@ -14,129 +14,119 @@
  * limitations under the License.
  */
 
+
 #ifndef __WIDGET_SERVICE_DOC_H__
 #define __WIDGET_SERVICE_DOC_H__
 
+
 /**
- * @defgroup CAPI_WIDGET_FRAMEWORK Widget
  * @ingroup CAPI_APPLICATION_FRAMEWORK
+ * @defgroup CAPI_WIDGET_FRAMEWORK Widget
  * @section CAPI_WIDGET_FRAMEWORK_OVERVIEW Overview
-<table>
-<tr>
-<th>API </th><th>Description  </th></tr>
-<tr>
-<td><a class="el" href="group__CAPI__WIDGET__APP__MODULE.html">Widget Application</a> </td>
-<td>Provides functions for handling Tizen widget application state changes or system events. </td>
-</tr>
-<tr>
-<td><a class="el" href="group__CAPI__WIDGET__SERVICE__MODULE.html">Widget Service</a> </td>
-<td>Provides functions to get the information of installed widgets.</td>
-</tr>
-<tr>
-<td><a class="el" href="group__CAPI__WIDGET__VIEWER__EVAS__MODULE.html">Widget Viewer Evas</a> </td>
-<td>Provides functions to replace and handle instances of widgets EFL application.</td>
-</tr>
-<tr>
-<td><a class="el" href="group__dali__widget__view.html">Widget Viewer Dali</a> </td>
-<td>Provides functions to replace and handle instances of widgets for DALi application.</td>
-</tr>
-</table>
+   <table>
+   <tr>
+   <th>API </th><th>Description  </th></tr>
+   <tr>
+   <td><a class="el" href="group__CAPI__WIDGET__APP__MODULE.html">Widget Application</a> </td>
+   <td>Provides functions for handling Tizen widget application state changes or system events. </td>
+   </tr>
+   <tr>
+   <td><a class="el" href="group__CAPI__WIDGET__SERVICE__MODULE.html">Widget Service</a> </td>
+   <td>Provides functions to get the information of installed widgets.</td>
+   </tr>
+   <tr>
+   <td><a class="el" href="group__CAPI__WIDGET__VIEWER__EVAS__MODULE.html">Widget Viewer Evas</a> </td>
+   <td>Provides functions to replace and handle instances of widgets EFL application.</td>
+   </tr>
+   <tr>
+   <td><a class="el" href="group__dali__widget__view.html">Widget Viewer Dali</a> </td>
+   <td>Provides functions to replace and handle instances of widgets for DALi application.</td>
+   </tr>
+   </table>
  */
 
+
 /**
- * @defgroup CAPI_WIDGET_SERVICE_MODULE Widget Service
- * @brief To get the information of installed widgets
  * @ingroup CAPI_WIDGET_FRAMEWORK
+ * @defgroup CAPI_WIDGET_SERVICE_MODULE Widget Service
+ * @brief To get the information of installed widgets.
  * @section CAPI_WIDGET_SERVICE_MODULE_HEADER Required Header
- *   \#include <widget_service.h>
- *   \#include <widget_errno.h>
+ * \#include <widget_service.h>
+ * \#include <widget_errno.h>
+ *
  * @section CAPI_WIDGET_SERVICE_MODULE_FEATURE Related Features
  * This API is related with the following feature:
  *  - http://tizen.org/feature/shell.appwidget
- * @section CAPI_WIDGET_SERVICE_MODULE_OVERVIEW Overview
-<H1>1. widget service API</H1>
-Tizen supports various kinds of API set for retrieving information of widgets.
-Every widgets are installed via package manager utilities.
-The information of installed widgets are stored in the system DB.
-
-In some cases, application developer needs to send update request to some widgets.
-To make it possible, this module provides related API set.
-But the API will only works if the widget and application are packaged in one.
-
-<H2>1.1 APIs for retrieving information of widgets</H2>
-
-To get the information for installed widgets.
-
-<H2>1.2 APIs for communicating with running widget instances</H2>
-
-To trigger the update event or send the updated content string to the widget.
-
-<H1>2. Size of widget</H1>
-
-Widget has predefined size types.
-1x1 is a square so its pixel size of width and height must has to be same.
-2x2, 4x4 also sqaure.
-
-2x1, 4x1, 4x2, 4x3 is a rectangle. so its pixel size of width & height should not be same.
-pixel size of width should be long than height.
-
-Pixel size can be differ between different devices.
-It depends on its screen resolution.
-
-So widget developer should care various kinds of devices (has different screen resolution).
-
-<TABLE>
-<TR>
-<TD>Size Type</TD><TD>Size in pixels</TD><TD>Supported profile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_1x1</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>No profile - This size type is not used. just defined for specifying a default cell size</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_2x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_2x2</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile, Wearable (Default size)</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_4x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_4x2</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_4x3</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_4x4</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-</TABLE>
-
-Widget also works for Easy Mode.
-For the Easy Mode, there are different size types.
-Called WIDGET_SIZE_TYPE_EASY_NxM
-
-<TABLE>
-<TR>
-<TD>Size Type</TD><TD>Size in pixels</TD><TD>Supported profile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_EASY_1x1</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_EASY_3x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-<TR>
-<TD>WIDGET_SIZE_TYPE_EASY_3x3</TD><TD> - (SQARE - depends on screen resolution) </TD><TD>Mobile</TD>
-</TR>
-</TABLE>
-
-However the Easy Mode is not a mandatory requirements for viewer application development.
-So you will not be able to create your widgets using Easy Mode size types.
-But if you are developing the homescreen(or application which is related with widgets displaying),
-You should care these types too.
-
  *
+ * @section CAPI_WIDGET_SERVICE_MODULE_OVERVIEW Overview
+   <H1>1. widget service API</H1>
+   Tizen supports various kinds of APIs set for retrieving information of widgets.
+   Every widgets are installed via package manager utilities.
+   The information of installed widgets are stored in the system DB.
+   In some cases, application developer needs to send update request to some widgets.
+   To make it possible, this module provides related API set.
+   But the API will only works if the widget and application are packaged in one.
+   <H2>1.1 APIs for retrieving information of widgets</H2>
+   To get the information for installed widgets.
+   <H2>1.2 APIs for communicating with running widget instances</H2>
+   To trigger the update event or send the updated content string to the widget.
+   <H1>2. Size of widget</H1>
+   Widget has predefined size types.
+   1x1 is a square so its pixel size of width and height must has to be same.
+   2x2, 4x4 also sqaure.
+   2x1, 4x1, 4x2, 4x3 is a rectangle. so its pixel size of width & height should not be same.
+   pixel size of width should be long than height.
+   Pixel size can be differ between different devices.
+   It depends on its screen resolution.
+   So widget developer should care various kinds of devices (has different screen resolution).
+   <TABLE>
+   <TR>
+   <TD>Size Type</TD><TD>Size in pixels</TD><TD>Supported profile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_1x1</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>No profile - This size type is not used. just defined for specifying a default cell size</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_2x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_2x2</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile, Wearable (Default size)</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_4x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_4x2</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_4x3</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_4x4</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   </TABLE>
+   Widget also works for Easy Mode.
+   For the Easy Mode, there are different size types.
+   Called WIDGET_SIZE_TYPE_EASY_NxM
+   <TABLE>
+   <TR>
+   <TD>Size Type</TD><TD>Size in pixels</TD><TD>Supported profile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_EASY_1x1</TD><TD> - (SQUARE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_EASY_3x1</TD><TD> - (RECTANGLE, depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   <TR>
+   <TD>WIDGET_SIZE_TYPE_EASY_3x3</TD><TD> - (SQARE - depends on screen resolution) </TD><TD>Mobile</TD>
+   </TR>
+   </TABLE>
+   However the Easy Mode is not a mandatory requirements for viewer application development.
+   So you will not be able to create your widgets using Easy Mode size types.
+   But if you are developing the homescreen(or application which is related with widgets displaying),
+   You should care these types too.
  */
 
+
 #endif
diff --git a/include/widget_errno.h b/include/widget_errno.h
index c4958d2..9c31049 100644
--- a/include/widget_errno.h
+++ b/include/widget_errno.h
@@ -58,10 +58,11 @@ typedef enum widget_error {
 	WIDGET_ERROR_ALREADY_EXIST = TIZEN_ERROR_WIDGET | 0x0002, /**< Already exists */
 	WIDGET_ERROR_ALREADY_STARTED = TIZEN_ERROR_WIDGET | 0x0004, /**< Operation is already started */
 	WIDGET_ERROR_NOT_EXIST = TIZEN_ERROR_WIDGET | 0x0008, /**< Not exists */
-	WIDGET_ERROR_DISABLED = TIZEN_ERROR_WIDGET | 0x0010,  /**< Disabled */
-	WIDGET_ERROR_MAX_EXCEEDED = TIZEN_ERROR_WIDGET | 0x0011,  /**< Maximum number of instances exceeded (Since 3.0) */
+	WIDGET_ERROR_DISABLED = TIZEN_ERROR_WIDGET | 0x0010, /**< Disabled */
+	WIDGET_ERROR_MAX_EXCEEDED = TIZEN_ERROR_WIDGET | 0x0011, /**< Maximum number of instances exceeded (Since 3.0) */
 } widget_error_e;
 
+
 /**
  * @}
  */
diff --git a/include/widget_service.h b/include/widget_service.h
index 26ff0eb..e4df18d 100644
--- a/include/widget_service.h
+++ b/include/widget_service.h
@@ -35,174 +35,185 @@ extern "C" {
  * @{
  */
 
+
 /**
  * @brief Enumeration for list of supporting widget size types.
  * @since_tizen 2.3.1
  */
 typedef enum widget_size_type {
-	WIDGET_SIZE_TYPE_1x1 = 0x0001,      /**< 175x175 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_2x1 = 0x0002,      /**< 354x175 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_2x2 = 0x0004,      /**< 354x354 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x1 = 0x0008,      /**< 712x175 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x2 = 0x0010,      /**< 712x354 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x3 = 0x0020,      /**< 712x533 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x4 = 0x0040,      /**< 712x712 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x5 = 0x0080,      /**< 712x891 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_4x6 = 0x0100,      /**< 712x1070 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_1x1 = 0x0001, /**< 175x175 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_2x1 = 0x0002, /**< 354x175 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_2x2 = 0x0004, /**< 354x354 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x1 = 0x0008, /**< 712x175 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x2 = 0x0010, /**< 712x354 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x3 = 0x0020, /**< 712x533 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x4 = 0x0040, /**< 712x712 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x5 = 0x0080, /**< 712x891 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_4x6 = 0x0100, /**< 712x1070 based on 720x1280 resolution */
 	WIDGET_SIZE_TYPE_EASY_1x1 = 0x1000, /**< 224x215 based on 720x1280 resolution */
 	WIDGET_SIZE_TYPE_EASY_3x1 = 0x2000, /**< 680x215 based on 720x1280 resolution */
 	WIDGET_SIZE_TYPE_EASY_3x3 = 0x4000, /**< 680x653 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_FULL = 0x0800,     /**< 720x1280 based on 720x1280 resolution */
-	WIDGET_SIZE_TYPE_UNKNOWN = 0xFFFF   /**< Error case */
+	WIDGET_SIZE_TYPE_FULL = 0x0800, /**< 720x1280 based on 720x1280 resolution */
+	WIDGET_SIZE_TYPE_UNKNOWN = 0xFFFF /**< Error case */
 } widget_size_type_e;
 
+
 /**
  * @brief Enumeration for widget event type.
  * @details These events will be sent from the provider.
  * @since_tizen 2.3.1
  */
-
 typedef enum widget_event_type {
-    WIDGET_EVENT_WIDGET_UPDATED = 0,                      /**< Contents of the given widget is updated */
+    WIDGET_EVENT_WIDGET_UPDATED = 0, /**< Contents of the given widget is updated */
     WIDGET_EVENT_WIDGET_EXTRA_UPDATED = 1,
-    WIDGET_EVENT_CREATED = 4,                            /**< A new widget is created */
-    WIDGET_EVENT_DELETED = 5,                            /**< A widget is deleted */
-    WIDGET_EVENT_PERIOD_CHANGED = 8,                     /**< Update period is changed */
-    WIDGET_EVENT_WIDGET_SIZE_CHANGED = 9,                /**< widget size is changed */
-    WIDGET_EVENT_EXTRA_INFO_UPDATED = 21,                /**< Extra information is updated */
-    WIDGET_EVENT_IGNORED = 0xFF                   /**< Request is ignored */
+    WIDGET_EVENT_CREATED = 4, /**< A new widget is created */
+    WIDGET_EVENT_DELETED = 5, /**< A widget is deleted */
+    WIDGET_EVENT_PERIOD_CHANGED = 8, /**< Update period is changed */
+    WIDGET_EVENT_WIDGET_SIZE_CHANGED = 9, /**< widget size is changed */
+    WIDGET_EVENT_EXTRA_INFO_UPDATED = 21, /**< Extra information is updated */
+    WIDGET_EVENT_IGNORED = 0xFF /**< Request is ignored */
 } widget_event_type_e;
 
+
 /**
  * @brief Gets the pixel size of given size type.
- * @details
- *  Size types would be\n
- *  #WIDGET_SIZE_TYPE_1x1\n
- *  #WIDGET_SIZE_TYPE_2x1\n
- *  #WIDGET_SIZE_TYPE_2x2\n
- *  #WIDGET_SIZE_TYPE_4x1\n
- *  #WIDGET_SIZE_TYPE_4x2\n
- *  #WIDGET_SIZE_TYPE_4x3\n
- *  #WIDGET_SIZE_TYPE_4x4\n
- *  #WIDGET_SIZE_TYPE_4x5\n
- *  #WIDGET_SIZE_TYPE_4x6\n
- *  #WIDGET_SIZE_TYPE_FULL\n
- *  #WIDGET_SIZE_TYPE_EASY_1x1\n
- *  #WIDGET_SIZE_TYPE_EASY_3x1\n
- *  #WIDGET_SIZE_TYPE_EASY_3x3.
+ * @details Size types would be\n
+ *          #WIDGET_SIZE_TYPE_1x1\n
+ *          #WIDGET_SIZE_TYPE_2x1\n
+ *          #WIDGET_SIZE_TYPE_2x2\n
+ *          #WIDGET_SIZE_TYPE_4x1\n
+ *          #WIDGET_SIZE_TYPE_4x2\n
+ *          #WIDGET_SIZE_TYPE_4x3\n
+ *          #WIDGET_SIZE_TYPE_4x4\n
+ *          #WIDGET_SIZE_TYPE_4x5\n
+ *          #WIDGET_SIZE_TYPE_4x6\n
+ *          #WIDGET_SIZE_TYPE_FULL\n
+ *          #WIDGET_SIZE_TYPE_EASY_1x1\n
+ *          #WIDGET_SIZE_TYPE_EASY_3x1\n
+ *          #WIDGET_SIZE_TYPE_EASY_3x3.
  * @since_tizen 2.3.1
  * @param[in] type Size type
  * @param[out] width Pixel size width
  * @param[out] height Pixel size height
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_NONE Successfully done
  * @see widget_size_type()
  * @see widget_service_get_size_type()
  */
 extern int widget_service_get_size(widget_size_type_e type, int *width, int *height);
 
+
 /**
  * @brief Gets the size type for given pixel size.
- * @details
- *  Returnable size types are\n
- *  #WIDGET_SIZE_TYPE_1x1\n
- *  #WIDGET_SIZE_TYPE_2x1\n
- *  #WIDGET_SIZE_TYPE_2x2\n
- *  #WIDGET_SIZE_TYPE_4x1\n
- *  #WIDGET_SIZE_TYPE_4x2\n
- *  #WIDGET_SIZE_TYPE_4x3\n
- *  #WIDGET_SIZE_TYPE_4x4\n
- *  #WIDGET_SIZE_TYPE_4x5\n
- *  #WIDGET_SIZE_TYPE_4x6\n
- *  #WIDGET_SIZE_TYPE_FULL\n
- *  #WIDGET_SIZE_TYPE_EASY_1x1\n
- *  #WIDGET_SIZE_TYPE_EASY_3x1\n
- *  #WIDGET_SIZE_TYPE_EASY_3x3\n
- *  or\n
- *  #WIDGET_SIZE_TYPE_UNKNOWN for error.
+ * @details Returnable size types are\n
+ *          #WIDGET_SIZE_TYPE_1x1\n
+ *          #WIDGET_SIZE_TYPE_2x1\n
+ *          #WIDGET_SIZE_TYPE_2x2\n
+ *          #WIDGET_SIZE_TYPE_4x1\n
+ *          #WIDGET_SIZE_TYPE_4x2\n
+ *          #WIDGET_SIZE_TYPE_4x3\n
+ *          #WIDGET_SIZE_TYPE_4x4\n
+ *          #WIDGET_SIZE_TYPE_4x5\n
+ *          #WIDGET_SIZE_TYPE_4x6\n
+ *          #WIDGET_SIZE_TYPE_FULL\n
+ *          #WIDGET_SIZE_TYPE_EASY_1x1\n
+ *          #WIDGET_SIZE_TYPE_EASY_3x1\n
+ *          #WIDGET_SIZE_TYPE_EASY_3x3\n
+ *          or\n
+ *          #WIDGET_SIZE_TYPE_UNKNOWN for error.
  * @since_tizen 2.3.1
  * @param[in] width Pixel size width
  * @param[in] height Pixel size height
  * @param[out] size_type Widget size type\n
- * @return 0 on success, otherwise a negative error value
- * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given.
+ * @return @c 0 on success,
+ *         otherwise a negative error value
+ * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given
  * @see widget_size_type()
  * @see widget_service_get_size()
  */
 extern int widget_service_get_size_type(int width, int height, widget_size_type_e *size_type);
 
+
 /**
  * @brief Gets the need of mouse event for the given widget.
  * @details This function gets need of mouse event for the given widget from database.\n
- * 	The value of mouse event requirement means... \n
- * 		true : The widget requires mouse event. A viewer must has to feed the mouse event to the widget instance\n
- * 		false : The widget doesn't require mouse event.\n
+ * 	        The value of mouse event requirement means: \n
+ * 		    true : The widget requires mouse event. A viewer must feed the mouse event to the widget instance.\n
+ * 		    false : The widget doesn't require mouse event.\n
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
  * @param[in] widget_id appid of widget application
- * @param[in] size_type widget size type
- * @param[out] need_of_mouse_event the need of mouse event
- * @return 0 on success, otherwise a negative error value
- * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given.
- * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file.
+ * @param[in] size_type Widget size type
+ * @param[out] need_of_mouse_event The need of mouse event
+ * @return 0 on success,
+ *         otherwise a negative error value
+ * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given
+ * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file
  * @see widget_size_type_e
  * @see widget_service_get_need_of_touch_effect()
  * @see widget_service_get_need_of_frame()
  */
 extern int widget_service_get_need_of_mouse_event(const char *widget_id, widget_size_type_e size_type, bool *need_of_mouse_event);
 
+
 /**
  * @brief Gets the need of touch effect for the given widget.
  * @details This API gets the need of touch effect for the given widget from database.\n
- *          The value of the need of touch effect means... \n
- *          true : A viewer is required to make the touch effect when a user click the widget, but it is just recommendation.\n
- *          false : A viewer is not required to make the touch effect, the box will make touch effect itself.
+ *          The value of the need of touch effect means: \n
+ *          true : A viewer is required to make the touch effect when a user clicks the widget, but it is just a recommendation.\n
+ *          false : A viewer is not required to make the touch effect, the box will make the touch effect itself.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
  * @param[in] widget_id appid of widget application
  * @param[in] size_type Size type
  * @param[out] need_of_touch_event the need of touch effect
- * @return 0 on success, otherwise a negative error value
- * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given.
- * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file.
+ * @return @c 0 on success,
+ *         otherwise a negative error value
+ * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given
+ * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file
  * @see widget_size_type_e
  * @see widget_service_get_need_of_mouse_event()
  * @see widget_service_get_need_of_frame()
   */
 extern int widget_service_get_need_of_touch_effect(const char *widget_id, widget_size_type_e size_type, bool *need_of_touch_event);
 
+
 /**
  * @brief Gets the need of decoration frame for the given widget.
  * @details This API gets the need of decoration frame for the given widget from database.\n
- *          The value of the need of touch effect means... \n
- *          true : the viewer should make decoration frame on outside of the widget.
- *          false : no need to amke decoration frame.
+ *          The value of the need of touch effect means: \n
+ *          true : The viewer should make decoration frame outside of the widget.
+ *          false : No need to make decoration frame.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
  * @param[in] widget_id appid of widget application
  * @param[in] size_type Size type
  * @param[out] need_of_frame the need of decoration frame
- * @return 0 on success, otherwise a negative error value
- * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given.
- * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file.
+ * @return @c 0 on success,
+ *         otherwise a negative error value
+ * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter was given
+ * @retval #WIDGET_ERROR_IO_ERROR Some error occurs on opening DB file
  * @see widget_service_get_need_of_mouse_event()
  * @see widget_service_get_need_of_touch_effect()
  */
 extern int widget_service_get_need_of_frame(const char *widget_id, widget_size_type_e size_type, bool *need_of_frame);
 
+
 /**
  * @brief Triggers the update event for given widget instance.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
- * @param[in] instance_id Set @c NULL if you don't know what the Id is. Then every instance of given pkgname will be triggered its update event
- * @param[in] b bundle data will be passed to the widget application via widget_update handler, default is @c NULL
- * @param[in] force 1 if you want to update your widget even if the provider is paused or 0. 0 is default
- * @return 0 on success, otherwise a negative error value
+ * @param[in] instance_id Set @c NULL if you don't know what the ID is. Then every instance of given pkgname will trigger its update event
+ * @param[in] b Bundle data will be passed to the widget application via widget_update handler, default is @c NULL
+ * @param[in] force 1 If you want to update your widget even if the provider is paused or 0. 0 is default
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
- * @retval #WIDGET_ERROR_CANCELED Provider is paused, so this update request is canceld.(ignored), if you want to make update forcely, use force=1
+ * @retval #WIDGET_ERROR_CANCELED Provider is paused, so this update request is canceled.(ignored), if you want to make update forcely, use force=1
  * @retval #WIDGET_ERROR_OUT_OF_MEMORY Memory is not enough to make request
  * @retval #WIDGET_ERROR_FAULT Failed to create a request packet
  * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
@@ -211,13 +222,15 @@ extern int widget_service_get_need_of_frame(const char *widget_id, widget_size_t
  */
 extern int widget_service_trigger_update(const char *widget_id, const char *instance_id, bundle *b, int force);
 
+
 /**
- * @brief Changes the update period of given widget instance.
+ * @brief Changes the update period of the given widget instance.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
- * @param[in] instance_id widget instance id
+ * @param[in] instance_id Widget instance ID
  * @param[in] period New update period in sec
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_NONE Successfully changed(requested)
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_FAULT Failed to create a request packet
@@ -228,12 +241,12 @@ extern int widget_service_change_period(const char *widget_id, const char *insta
 
 
 /**
- * @brief Callback function for getting result of widget_service_get_widget_list
+ * @brief Callback function for getting result of widget_service_get_widget_list.
  * @since_tizen 2.3.1
  * @param[in] pkgid package id
  * @param[in] widget_id appid of widget application
  * @param[in] is_prime will be sent as 1 if the widget is a default widget
- * @param[in] data user data
+ * @param[in] data user Data
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
  * @return WIDGET_ERROR_NONE to continue with the next iteration of the loop, other error values to break out of the loop
@@ -241,14 +254,16 @@ extern int widget_service_change_period(const char *widget_id, const char *insta
  */
 typedef int (*widget_list_cb)(const char *pkgid, const char *widget_id, int is_prime, void *data);
 
+
 /**
  * @brief Gets a list of all widgets.
  * @since_tizen 2.3.1
  * @param[in] cb Callback function
- * @param[in] data user data for callback function
+ * @param[in] data user Data for callback function
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_IO_ERROR Failed to access DB
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
@@ -258,26 +273,28 @@ typedef int (*widget_list_cb)(const char *pkgid, const char *widget_id, int is_p
  */
 extern int widget_service_get_widget_list(widget_list_cb cb, void *data);
 
+
 /**
- * @brief Gets the MAIN application Id of given widget package Id.
+ * @brief Gets the MAIN application ID of given widget package ID.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @remarks Result string should be freed by free()
+ * @remarks Result string should be freed by free().
  * @param[in] widget_id appid of widget application
  * @return char * type
- * @retval @c NULL If it fails to get main application Id (UI-APPID), get_last_result() will returns reason of failure.
+ * @retval @c NULL if it fails to get main application Id (UI-APPID), get_last_result() will returns reason of failure
  * @retval appid Main application Id
  * @see #get_last_result
  */
 extern char *widget_service_get_main_app_id(const char *widget_id);
 
+
 /**
- * @brief Callback function for getting result of widget_service_get_widget_list_by_pkgid
+ * @brief Callback function for getting result of widget_service_get_widget_list_by_pkgid.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
  * @param[in] is_prime will be sent as 1 if the widget is a default widget
- * @param[in] data user data
+ * @param[in] data user Data
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
  * @return WIDGET_ERROR_NONE to continue with the next iteration of the loop, other error values to break out of the loop
@@ -285,15 +302,17 @@ extern char *widget_service_get_main_app_id(const char *widget_id);
  */
 typedef int (*widget_list_by_pkgid_cb)(const char *widget_id, int is_prime, void *data);
 
+
 /**
- * @brief Gets a list of widgets included in the given package id
+ * @brief Gets a list of widgets included in the given package ID.
  * @since_tizen 2.3.1
- * @param[in] pkgid Package Id (Not the UI App Id)
+ * @param[in] pkgid Package ID (Not the UI App ID)
  * @param[in] cb Callback function
  * @param[in] data Callback data
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval int Count of widget packages
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_IO_ERROR Failed to access DB
@@ -303,28 +322,29 @@ typedef int (*widget_list_by_pkgid_cb)(const char *widget_id, int is_prime, void
  */
 extern int widget_service_get_widget_list_by_pkgid(const char *pkgid, widget_list_by_pkgid_cb cb, void *data);
 
+
 /**
- * @brief Gets the id of a widget by the given id of package or UI app.
- *        If there are two or more widgets in the package, this function returns the id of the primary widget.
+ * @brief Gets the ID of a widget by the given ID of package or UI app.
+ *        If there are two or more widgets in the package, this function returns the ID of the primary widget.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @remarks Result string should be freed by free()
+ * @remarks Result string should be freed by free().
  * @param[in] id Package Id or UI App Id
  * @return char * type
- * @retval @c NULL Failed to get primary widget id, get_last_result() will returns reason of failure.
+ * @retval @c NULL Failed to get primary widget id, get_last_result() will returns reason of failure
  * @retval widget_id Primary widget Id.
- * @pre Must be released returned string by manually.
+ * @pre Must release returned string manually.
  * @see widget_service_package_id()
  */
 extern char *widget_service_get_widget_id(const char *id);
 
+
 /**
- * @brief Gets the appId of setup app which is specified by given widget Id's manifest.
- * @details
- *    This setup app should be launched before adding the widget to get the content_info.\n
- *    This function should be called before add a widget.\n
- *    To determine the content information string.
+ * @brief Gets the appId of setup app which is specified by the given widget ID's manifest.
+ * @details This setup app should be launched before adding the widget to get the content_info.\n
+ *          This function should be called before adding a widget.\n
+ *          To determine the content information string.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
@@ -333,13 +353,14 @@ extern char *widget_service_get_widget_id(const char *id);
  * @return char * type
  * @retval @c NULL There is no setup application or error occurred, you can check it using get_last_result()
  * @retval appid AppId if exists or @c NULL
- * @post Returned string must be free'd manually.
+ * @post Returned string must be freed manually.
  * @see get_last_result()
  */
 extern char *widget_service_get_app_id_of_setup_app(const char *widget_id);
 
+
 /**
- * @brief Gets the package id of the given widget.
+ * @brief Gets the package ID of the given widget.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
@@ -347,12 +368,13 @@ extern char *widget_service_get_app_id_of_setup_app(const char *widget_id);
  * @param[in] widget_id appid of widget application
  * @return char * type
  * @retval appid String which is allocated in the heap
- * @retval @c NULL Invalid appid, get_last_result() will returns reason of failure if it fails.
+ * @retval @c NULL Invalid appid, get_last_result() will return reasons of failure if it fails
  * @post Returned string must be free'd manually.
  * @see widget_service_widget_id()
  */
 extern char *widget_service_get_package_id(const char *widget_id);
 
+
 /**
  * @brief Gets the name of the given widget.
  * @since_tizen 2.3.1
@@ -363,62 +385,66 @@ extern char *widget_service_get_package_id(const char *widget_id);
  * @param[in] lang Locale(en-us, ko-kr, ...), if it is @c NULL, function will use the system locale automatically
  * @return char * type
  * @retval name If it fails to get name
- * @retval @c NULL Allocated heap address, get_last_result() will returns reason of failure if it fails.
- * @post Returned string must be free'd by manually.
+ * @retval @c NULL Allocated heap address, get_last_result() will return reasons of failure if it fails.
+ * @post Returned string must be freed manually.
  * @see widget_service_i18n_icon()
  * @see widget_service_preview()
  */
 extern char *widget_service_get_name(const char *widget_id, const char *lang);
 
+
 /**
  * @brief Gets the preview image path of given size type.
  * @details This function will return the preview image path.
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @remarks Result string should be freed by free()
+ * @remarks Result string should be freed by free().
  * @param[in] widget_id appid of widget application
- * @param[in] size_type widget size type
+ * @param[in] size_type Widget size type
  * @return char * type
  * @retval path Preview image path
  * @retval @c NULL There is no preview image file, get_last_result() will returns reason of failure if it fails.
- * @post Returned string must be free'd manually.
+ * @post Returned string must be freed manually.
  * @see #widget_service_get_icon
  * @see #widget_service_get_name
  */
 extern char *widget_service_get_preview_image_path(const char *widget_id, widget_size_type_e size_type);
 
+
 /**
  * @brief Gets icon path of given widget package.
  * @details The user should free the returned string with free().
  * @since_tizen 2.3.1
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @remarks Result string should be freed by free()
- * @param[in] pkgid package id of widget application
+ * @remarks Result string should be freed by free().
+ * @param[in] pkgid Package ID of widget application
  * @param[in] lang Locale(en-us, ko-kr, ...), if it is @c NULL, function will use the system locale automatically
  * @return char * type
  * @retval name Allocated heap address
- * @retval @c NULL Fails to get path of an icon, get_last_result() will returns reason of failure if it fails.
- * @post Returned string must be free'd manually.
+ * @retval @c NULL Fails to get path of an icon, get_last_result() will return reasons of failure if it fails
+ * @post Returned string must be freed manually.
  * @see #widget_service_get_name
  * @see #widget_service_get_preview_image_path
  */
 extern char *widget_service_get_icon(const char *pkgid, const char *lang);
 
+
 /**
- * @brief Gets the "nodisplay" value
+ * @brief Gets the "nodisplay" value.
  * @since_tizen 2.3.1
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @param[in] widget_id Appid of widget application
+ * @param[in] widget_id appid of widget application
  * @privlevel public
  * @return The "nodisplay" value of given widget
  * @retval 1 The box should not be listed by the widget list app
- * @retval 0 Box should be listed, get_last_result() will returns reason of failure if it fails
+ * @retval 0 Box should be listed, get_last_result() will return reasons of failure if it fails
  * @pre Widget tag includes "nodisplay" attribute
  */
 extern int widget_service_get_nodisplay(const char *widget_id);
 
+
 /**
  * @brief Gets the supported size list.
  * @since_tizen 2.3.1
@@ -428,7 +454,8 @@ extern int widget_service_get_nodisplay(const char *widget_id);
  * @param[in,out] cnt Count of array w and h
  * @param[out] w Width array
  * @param[out] h Height array
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_NONE If succeed to get supported size list
  * @retval #WIDGET_ERROR_IO_ERROR Failed to access DB
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
@@ -437,8 +464,9 @@ extern int widget_service_get_nodisplay(const char *widget_id);
  */
 extern int widget_service_get_supported_sizes(const char *widget_id, int *cnt, int **w, int **h);
 
+
 /**
- * @brief Gets the supported size list of given widget id.
+ * @brief Gets the supported size list of given widget ID.
  * @since_tizen 2.3.1
  * @param[in] widgetid appid of widget application
  * @param[in] cnt Size of types array
@@ -446,7 +474,8 @@ extern int widget_service_get_supported_sizes(const char *widget_id, int *cnt, i
  * @param[out] types Array of types
  * @privlevel public
  * @privilege %http://tizen.org/privilege/widget.viewer
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_IO_ERROR Failed to access DB
  * @retval #WIDGET_ERROR_NONE Successfully done
@@ -455,24 +484,27 @@ extern int widget_service_get_supported_sizes(const char *widget_id, int *cnt, i
  */
 extern int widget_service_get_supported_size_types(const char *widgetid, int *cnt, int **types);
 
+
 /**
- * @brief Callback function for getting result of widget_service_get_widget_instance_list
+ * @brief Callback function for getting result of widget_service_get_widget_instance_list.
  * @since_tizen 2.3.1
- * @param[in] widget_id widget app id
- * @param[in] widget_instance_id widget instance id
- * @param[in] data user data
+ * @param[in] widget_id Widget appid
+ * @param[in] widget_instance_id widget instance ID
+ * @param[in] data user Data
  * @return WIDGET_ERROR_NONE to continue with the next iteration of the loop, other error values to break out of the loop
  * @see #widget_service_get_widget_instance_list
  */
 typedef int (*widget_instance_list_cb)(const char *widget_id, const char *instance_id, void *data);
 
+
 /**
  * @brief Gets widget instances of given widget_id.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
  * @param[in] cb Callback function
- * @param[in] data user data for callback function
- * @return Negative error value on fail, otherwise count of instances
+ * @param[in] data user Data for callback function
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_NOT_EXIST Instance is not exist
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
@@ -481,8 +513,9 @@ typedef int (*widget_instance_list_cb)(const char *widget_id, const char *instan
  */
 extern int widget_service_get_widget_instance_list(const char *widget_id, widget_instance_list_cb cb, void *data);
 
+
 /**
- * @brief Enumerations for life cycle event of widgets
+ * @brief Enumeration for life cycle event of widgets.
  * @since_tizen 2.3.1
  * @see widget_lifecycle_event_cb
  */
@@ -495,26 +528,30 @@ typedef enum widget_lifecycle_event {
 	WIDGET_LIFE_CYCLE_EVENT_MAX     = 5
 } widget_lifecycle_event_e;
 
+
 /**
- * @brief Called when a widget is created or destroyed
+ * @brief Called when a widget is created or destroyed.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
- * @param[in] lifecycle_event type of event
- * @param[in] widget_instance_id widget instance id
+ * @param[in] lifecycle_event Type of event
+ * @param[in] widget_instance_id Widget instance ID
  * @param[in] data user data
- * @return 0 on success, otherwise a negative error value
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @see #widget_service_set_lifecycle_event_cb
  */
 typedef int (*widget_lifecycle_event_cb)(const char *widget_id, widget_lifecycle_event_e lifecycle_event, const char *widget_instance_id, void *data);
 
+
 /**
- * @brief Registers event handler callback function for life-cycle events of widgets
+ * @brief Registers event handler callback function for life cycle events of widgets.
  * @since_tizen 2.3.1
  * @privlevel public
  * @param[in] widget_id appid of widget application
  * @param[in] cb Callback function
- * @param[in] data user data
- * @return 0 on success, otherwise a negative error value
+ * @param[in] data user Data
+ * @return @0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
  * @see #widget_lifecycle_event_cb
@@ -522,31 +559,37 @@ typedef int (*widget_lifecycle_event_cb)(const char *widget_id, widget_lifecycle
  */
 extern int widget_service_set_lifecycle_event_cb(const char *widget_id, widget_lifecycle_event_cb cb, void *data);
 
+
 /**
- * @brief Unregisters event handler callback function for life-cycle events of widgets
+ * @brief Unregisters event handler callback function for life cycle events of widgets.
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
- * @param[out] user_data user callback data
- * @return 0 on success, otherwise a negative error value
+ * @param[out] user_data User callback data
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
  * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
- * @retval #WIDGET_ERROR_NOT_EXIST Event handler callback function is not exist
+ * @retval #WIDGET_ERROR_NOT_EXIST Event handler callback function does not exist
  * @see #widget_service_set_lifecycle_event_cb
  */
 extern int widget_service_unset_lifecycle_event_cb(const char *widget_id, void **user_data);
 
+
 /**
  * @brief Gets content of the widget instance
  * @since_tizen 2.3.1
  * @param[in] widget_id appid of widget application
- * @param[in] widget_instance_id widget instance id
- * @param[out] b bundle(content) data of the given widget instance, it should be released by caller.
- * @return 0 on success, otherwise a negative error value
+ * @param[in] widget_instance_id Widget instance ID
+ * @param[out] b Bundle(content) data of the given widget instance, it should be released by caller.
+ * @return @c 0 on success,
+ *         otherwise a negative error value
  * @retval #WIDGET_ERROR_IO_ERROR Failed to access DB
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid argument
- * @post caller should have to release the bundle
+ * @post Caller should have to release the bundle.
  */
 extern int widget_service_get_content_of_widget_instance(const char *widget_id, const char *widget_instance_id, bundle **b);
+
+
 /**
  * @}
  */