Symbian3/SDK/Source/GUID-21DAC50D-7737-42B6-BBDA-E12E8779741B.dita
changeset 8 ae94777fff8f
parent 7 51a74ef9ed63
--- a/Symbian3/SDK/Source/GUID-21DAC50D-7737-42B6-BBDA-E12E8779741B.dita	Wed Mar 31 11:11:55 2010 +0100
+++ b/Symbian3/SDK/Source/GUID-21DAC50D-7737-42B6-BBDA-E12E8779741B.dita	Fri Jun 11 12:39:03 2010 +0100
@@ -1,37 +1,104 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
-<!-- This component and the accompanying materials are made available under the terms of the License 
-"Eclipse Public License v1.0" which accompanies this distribution, 
-and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
-<!-- Initial Contributors:
-    Nokia Corporation - initial contribution.
-Contributors: 
--->
-<!DOCTYPE concept
-  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
-<concept id="GUID-21DAC50D-7737-42B6-BBDA-E12E8779741B" xml:lang="en"><title>Feedback</title><prolog><metadata><keywords/></metadata></prolog><conbody>
-<p>Visual feedback is the most important sensory feedback when entering characters
-on screen. Visual feedback can be, for example, button effects, color changes,
-status indicators, touch/release state changes, or clearing the screen when
-transitioning to next screen.</p>
-<p>With audio feedback, lower clicks and tones are preferred over loud beeps,
-though most people turn audio feedback off anyway.</p>
-<p>Vibration is used as tactile feedback for touch screen interaction or input.
-Tactile feedback gives the user an immediate response that the touch event
-has been registered.</p>
-<p>With the Symbian touch UI, tactile feedback is used in the following situations:</p>
-<ul>
-<li><p><b>Sensors: </b>a tap on the device by hand provides tactile feedback
-to the user in case of a successful interaction.</p></li>
-<li><p><b>Touch interaction (touch screen):</b> to indicate to the user that
-an interaction event has been successful. For example, when the user presses
-a button on the touch screen</p></li>
-</ul>
-<p><note>Tactile feedback is included in those common UI components where
-it has been seen as beneficial. When creating new applications and designing
-custom components, tactile feedback is to be included where found useful.
-For example, in any button type of UI component, the tactile feedback is naturally
-beneficial.</note></p>
-<p>For more information, see <xref href="GUID-581A8E4B-12BE-41C0-A20E-3087A80FEECF.dita">Tactile
-feedback</xref>.</p>
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-21DAC50D-7737-42B6-BBDA-E12E8779741B" xml:lang="en"><title>Feedback</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>Visual feedback is the most important sensory feedback when entering characters
+on screen. Visual feedback can be, for example, button effects, color changes,
+status indicators, touch/release state changes, or clearing the screen when
+transitioning to next screen.</p>
+<p>With audio feedback, lower clicks and tones are preferred over loud beeps,
+though most people turn audio feedback off anyway.</p>
+<p>Vibration is used as tactile feedback for touch screen interaction or input.
+Tactile feedback gives the user an immediate response that the touch event
+has been registered.</p>
+<p>With the Symbian touch UI, tactile feedback is used in the following situations:</p>
+<ul>
+<li><p><b>Sensors: </b>a tap on the device by hand provides tactile feedback
+to the user in case of a successful interaction.</p></li>
+<li><p><b>Touch interaction (touch screen):</b> to indicate to the user that
+an interaction event has been successful. For example, when the user presses
+a button on the touch screen</p></li>
+</ul>
+<p><note>Tactile feedback is included in those common UI components where
+it has been seen as beneficial. When creating new applications and designing
+custom components, tactile feedback is to be included where found useful.
+For example, in any button type of UI component, the tactile feedback is naturally
+beneficial.</note></p>
+<p>In your application, you can use the following feedback types, defined
+in <codeph>TTouchLogicalFeedback</codeph>:</p>
+<table id="GUID-6FF24F72-C352-4027-AA5D-2D34EBFA00F4">
+<tgroup cols="2"><colspec colname="col1"/><colspec colname="col2"/>
+<tbody>
+<row>
+<entry><p><codeph>ETouchFeedbackNone</codeph></p></entry>
+<entry><p>Used for disabling feedback in some areas of the application window
+while using the area registry.</p></entry>
+</row>
+<row>
+<entry><p><codeph>ETouchFeedbackBasic</codeph></p></entry>
+<entry><p>Used as a default feedback for stylus touch down events. For example,
+when the mobile device user taps a button or tab.</p></entry>
+</row>
+<row>
+<entry><p><codeph>ETouchFeedbackSensitive</codeph></p></entry>
+<entry><p>Provides sensitive feedback in situations when:<ul>
+<li><p>the triggering action is not very important (for example, change of
+focus in a list).</p></li>
+<li><p>there can be a large number of feedback instances within a short time
+(for example, text selection which gives feedback on every new selected character).</p></li>
+</ul> It is also used for scrolling and dragging.</p></entry>
+</row>
+</tbody>
+</tgroup>
+</table>
+<p>To use vibration or audio feedback in your application:</p>
+<ol>
+<li id="GUID-791E80D6-6935-4202-81E0-BA7392A9E1B3"><p>Include <codeph>touchfeedback.lib</codeph> in
+your <codeph>.mmp</codeph> file.</p></li>
+<li id="GUID-A185188F-F37B-440B-8213-214D77CF3B8B"><p>Include <parmname>touchfeedback.h</parmname>.</p></li>
+<li id="GUID-6455F4C1-AEA6-4C30-8E9B-DF9950558E17"><itemgroup><p>To enable
+tactile feedback for your application, add the following code.</p><codeblock xml:space="preserve">MTouchFeedback* feedback = MTouchFeedback::Instance();
+feedback-&gt;SetFeedbackEnabledForThisApp(ETrue); // enabling feedback is optional  </codeblock><p>Do
+not delete the pointer in the controller destructor.</p></itemgroup></li>
+<li id="GUID-FC1B810B-99F4-44E5-82DC-46686D6D4198"><itemgroup><p>To use tactile
+feedback when a mobile device user points at a control, add the following
+code.</p><codeblock xml:space="preserve">void CMyContainerControl::HandlePointerEventL(const TPointerEvent&amp; aPointerEvent)
+    {
+    // Feedback is always played at pointer down event
+    if(aPointerEvent.iType == TPointerEvent::EButton1Down)
+        {
+        MTouchFeedback* feedback = MTouchFeedback::Instance();  
+        if (feedback) 
+             { 
+             feedback-&gt;InstantFeedback(ETouchFeedbackBasic);  
+             }  
+        }
+   
+    // Your other pointer event handling code here
+</codeblock></itemgroup></li>
+<li id="GUID-A26D8717-1839-4132-98C4-5C09086BB361"><itemgroup><p>To enable
+automatic feedback triggering in a specific area of a UI component, add</p><codeblock xml:space="preserve">feedback-&gt;SetFeedbackArea( this, 
+                           1, // area Id
+                           TRect( 0,0,20,20 ), 
+                           ETouchFeedbackBasic, 
+                           ETouchEventStylusDown );
+</codeblock></itemgroup></li>
+</ol>
+<note><ul>
+<li><p>To use tactile feedback in an application, additional platform security
+capabilities are not required.</p></li>
+<li><p>Applications themselves do not need to generate feedback effects, unless
+they are using custom components. The feedback is generated by components
+that the applications use.</p></li>
+</ul></note>
+<p>For more information, see <xref href="GUID-581A8E4B-12BE-41C0-A20E-3087A80FEECF.dita">Tactile
+feedback</xref>.</p>
 </conbody></concept>
\ No newline at end of file