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qt4-doc-4.2.1-1.el5_7.1.x86_64.rpm

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  <title>Qt 4.2: QWSServer::KeyboardFilter Class Reference</title>
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<p>The KeyboardFilter class provides a global keyboard event filter. <a href="#details">More...</a></p>
<pre> #include &lt;<a href="qwsserver.html">QWSServer</a>&gt;</pre><ul>
<li><a href="qwsserver-keyboardfilter-members.html">List of all members, including inherited members</a></li>
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<h3>Public Functions</h3>
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<li><div class="fn"/>virtual <b><a href="qwsserver-keyboardfilter.html#dtor.KeyboardFilter">~KeyboardFilter</a></b> ()</li>
<li><div class="fn"/>virtual bool <b><a href="qwsserver-keyboardfilter.html#filter">filter</a></b> ( int <i>unicode</i>, int <i>keycode</i>, int <i>modifiers</i>, bool <i>isPress</i>, bool <i>autoRepeat</i> ) = 0</li>
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<h2>Detailed Description</h2>
<p>The KeyboardFilter class provides a global keyboard event filter.</p>
<p>Note that this class is only available in <a href="qtopiacore.html">Qtopia Core</a>.</p>
<p>KeyboardFilter is used to implement a global, low-level filter on key events in the <a href="qtopiacore.html">Qtopia Core</a> server application; this can be used to implement things like APM (advanced power management) suspended from a button without having to filter for it in all applications.</p>
<p>See also <a href="qwsserver.html">QWSServer</a>, <a href="qwsinputmethod.html">QWSInputMethod</a>, and <a href="qtopiacore-charinput.html">Character Input</a>.</p>
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<h2>Member Function Documentation</h2>
<h3 class="fn"><a name="dtor.KeyboardFilter"></a>KeyboardFilter::~KeyboardFilter ()&nbsp;&nbsp;<tt> [virtual]</tt></h3>
<p>Destroys the keyboard filter.</p>
<h3 class="fn"><a name="filter"></a>bool KeyboardFilter::filter ( int <i>unicode</i>, int <i>keycode</i>, int <i>modifiers</i>, bool <i>isPress</i>, bool <i>autoRepeat</i> )&nbsp;&nbsp;<tt> [pure virtual]</tt></h3>
<p>Returns true if the specified key event should be filtered, stopping the event from being processed any further; otherwise returns false.</p>
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<thead><tr valign="top" class="qt-style"><th>Parameter</th><th>Description</th></tr></thead>
<tr valign="top" class="odd"><td><i>unicode</i></td><td>The unicode value of the key.</td></tr>
<tr valign="top" class="even"><td><i>keycode</i></td><td>The Qt keycode value as defined by the <a href="qt.html#Key-enum">Qt::Key</a> enum.</td></tr>
<tr valign="top" class="odd"><td><i>modifiers</i></td><td>An OR combination of <a href="qt.html#KeyboardModifier-enum">Qt::KeyboardModifier</a> values, indicating whether <b>Shift/Alt/Ctrl</b> keys are pressed.</td></tr>
<tr valign="top" class="even"><td><i>isPress</i></td><td>True if the event is a key press event; otherwise false.</td></tr>
<tr valign="top" class="odd"><td><i>autoRepeat</i></td><td>True if the event is caused by auto repeat (i.e. the user has held the key down and this is the second or subsequent key event being sent); otherwise false.</td></tr>
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