File: qwsevent.html

package info (click to toggle)
qt4-x11 4%3A4.8.2%2Bdfsg-11
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 701,696 kB
  • sloc: cpp: 2,686,179; ansic: 375,485; python: 25,859; sh: 19,349; xml: 17,091; perl: 14,765; yacc: 5,383; asm: 5,038; makefile: 1,259; lex: 555; ruby: 526; objc: 347; cs: 112; pascal: 112; php: 54; sed: 34
file content (111 lines) | stat: -rw-r--r-- 9,051 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qwsevent_qws.cpp -->
  <title>Qt 4.8: QWSEvent Class Reference</title>
  <link rel="stylesheet" type="text/css" href="style/offline.css" />
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="content"> 
    <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
  </div>
  <div class="breadcrumb toolblock">
    <ul>
      <li class="first"><a href="index.html">Home</a></li>
      <!--  Breadcrumbs go here -->
<li><a href="modules.html">Modules</a></li>
<li><a href="qtgui.html">QtGui</a></li>
<li>QWSEvent</li>
    </ul>
  </div>
</div>
<div class="content mainContent">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#public-types">Public Types</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<h1 class="title">QWSEvent Class Reference</h1>
<!-- $$$QWSEvent-brief -->
<p>The QWSEvent class encapsulates an event in Qt for Embedded Linux. <a href="#details">More...</a></p>
<!-- @@@QWSEvent -->
<pre class="cpp"> <span class="preprocessor">#include &lt;QWSEvent&gt;</span></pre><ul>
<li><a href="qwsevent-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-types"></a>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qwsevent.html#Type-enum">Type</a></b> { NoEvent, Connected, Mouse, Focus, ..., ScreenTransformation }</td></tr>
</table>
<a name="details"></a>
<!-- $$$QWSEvent-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QWSEvent class encapsulates an event in Qt for Embedded Linux.</p>
<p>When running a <a href="qt-embedded-linux.html">Qt for Embedded Linux</a> application, it either runs as a server or connects to an existing server. All system generated events are passed to the server application which then propagates the event to the appropriate client.</p>
<p>Whenever the server receives an event, it queries its stack of top-level windows to find the window containing the event's position. Each window can identify the client application that created it, and returns its ID to the server upon request. Finally, the server forwards the event, encapsulated by an instance of the QWSEvent class, to the appropriate client.</p>
<p class="centerAlign"><img src="images/qt-embedded-client.png" alt="" /></p><p>The server communicates with the client applications over the UNIX domain socket. You can retrieve direct access to all the events a client receives from the server, by reimplementing <a href="qapplication.html">QApplication</a>'s <a href="qapplication.html#qwsEventFilter">qwsEventFilter()</a> function.</p>
<p>QWSEvent provides the <a href="qwsevent.html#Type-enum">Type</a> enum specifying the origin of the event. Internally, each type is represented by a QWSEvent subclass, e.g&#x2e;, <tt>QWSKeyEvent</tt>.</p>
</div>
<p><b>See also </b><a href="qwsserver.html">QWSServer</a>, <a href="qwsclient.html">QWSClient</a>, and <a href="qt-embedded-architecture.html">Qt for Embedded Linux Architecture</a>.</p>
<!-- @@@QWSEvent -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$Type$$$NoEvent$$$Connected$$$Mouse$$$Focus$$$Key$$$Region$$$Creation$$$PropertyNotify$$$PropertyReply$$$SelectionClear$$$SelectionRequest$$$SelectionNotify$$$MaxWindowRect$$$QCopMessage$$$WindowOperation$$$IMEvent$$$IMQuery$$$IMInit$$$Embed$$$Font$$$ScreenTransformation$$$NEvent -->
<h3 class="fn"><a name="Type-enum"></a>enum QWSEvent::<span class="name">Type</span></h3>
<p>This enum describes the origin of the event.</p>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>QWSEvent::NoEvent</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">No event has occurred.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Connected</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">An application has connected to the server.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Mouse</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">A mouse button is pressed or released, or the mouse cursor is moved. See also <a href="qt-embedded-pointer.html">Qt for Embedded Linux Pointer Handling</a>.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Focus</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">A window has lost or received focus.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Key</tt></td><td class="topAlign"><tt>4</tt></td><td class="topAlign">A key is pressed or released. See also <a href="qt-embedded-charinput.html">Qt for Embedded Linux Character Input</a>.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Region</tt></td><td class="topAlign"><tt>5</tt></td><td class="topAlign">A region has changed.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Creation</tt></td><td class="topAlign"><tt>6</tt></td><td class="topAlign">The server has created an ID, typically for a window.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::PropertyNotify</tt></td><td class="topAlign"><tt>7</tt></td><td class="topAlign">A property has changed.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::PropertyReply</tt></td><td class="topAlign"><tt>8</tt></td><td class="topAlign">The server is responding to a request for a property's value.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::SelectionClear</tt></td><td class="topAlign"><tt>9</tt></td><td class="topAlign">A selection is deleted.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::SelectionRequest</tt></td><td class="topAlign"><tt>10</tt></td><td class="topAlign">The server has queried for a selection.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::SelectionNotify</tt></td><td class="topAlign"><tt>11</tt></td><td class="topAlign">A new selection has been created.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::MaxWindowRect</tt></td><td class="topAlign"><tt>12</tt></td><td class="topAlign">The server has changed the maximum window for an application.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::QCopMessage</tt></td><td class="topAlign"><tt>13</tt></td><td class="topAlign">A new Qt Cop message has appeared. See also <a href="qcopchannel.html">QCopChannel</a></td></tr>
<tr><td class="topAlign"><tt>QWSEvent::WindowOperation</tt></td><td class="topAlign"><tt>14</tt></td><td class="topAlign">A window operation, e.g&#x2e; resizing, has occurred.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::IMEvent</tt></td><td class="topAlign"><tt>15</tt></td><td class="topAlign">An input method has been used to enter text for languages with non-Latin alphabets. See also <a href="qwsinputmethod.html">QWSInputMethod</a>.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::IMQuery</tt></td><td class="topAlign"><tt>16</tt></td><td class="topAlign">An input method query for a specified property has occurred. See also <a href="qwsinputmethod.html">QWSInputMethod</a>.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::NEvent</tt></td><td class="topAlign"><tt>21</tt></td><td class="topAlign">The number of events has changed.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::Embed</tt></td><td class="topAlign"><tt>18</tt></td><td class="topAlign">An event used internally to implement embedded windows. See also <a href="qwsembedwidget.html">QWSEmbedWidget</a>.</td></tr>
<tr><td class="topAlign"><tt>QWSEvent::ScreenTransformation</tt></td><td class="topAlign"><tt>20</tt></td><td class="topAlign">An event used internally to notify the client processes that the screen has changed for example, rotation, etc.</td></tr>
</table>
<!-- @@@Type -->
</div>
  <div class="ft">
    <span></span>
  </div>
</div> 
<div class="footer">
    <p>
      <acronym title="Copyright">&copy;</acronym> 2012 Nokia Corporation and/or its
      subsidiaries. Documentation contributions included herein are the copyrights of
      their respective owners.</p>
    <br />
    <p>
      The documentation provided herein is licensed under the terms of the
      <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
      License version 1.3</a> as published by the Free Software Foundation.</p>
    <p>
      Documentation sources may be obtained from <a href="http://www.qt-project.org">
      www.qt-project.org</a>.</p>
    <br />
    <p>
      Nokia, Qt and their respective logos are trademarks of Nokia Corporation 
      in Finland and/or other countries worldwide. All other trademarks are property
      of their respective owners. <a title="Privacy Policy"
      href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
</div>
</body>
</html>