392 lines
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HTML
392 lines
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<h1 class="title">QShortcut Class Reference</h1>
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<!-- $$$QShortcut-brief -->
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<p>The QShortcut class is used to create keyboard shortcuts. <a href="#details">More...</a></p>
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<!-- @@@QShortcut -->
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<pre class="cpp"> <span class="preprocessor">#include <QShortcut></span></pre><p><b>Inherits: </b><a href="qobject.html">QObject</a>.</p>
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<li><a href="qshortcut-members.html">List of all members, including inherited members</a></li>
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<a name="properties"></a>
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<h2>Properties</h2>
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<tr><td class="topAlign"><ul>
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<li class="fn"><b><a href="qshortcut.html#autoRepeat-prop">autoRepeat</a></b> : bool</li>
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<li class="fn"><b><a href="qshortcut.html#context-prop">context</a></b> : Qt::ShortcutContext</li>
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<li class="fn"><b><a href="qshortcut.html#enabled-prop">enabled</a></b> : bool</li>
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</ul></td><td class="topAlign"><ul>
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<li class="fn"><b><a href="qshortcut.html#key-prop">key</a></b> : QKeySequence</li>
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<li class="fn"><b><a href="qshortcut.html#whatsThis-prop">whatsThis</a></b> : QString</li>
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</ul>
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</td></tr>
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<ul>
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<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
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<a name="public-functions"></a>
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<h2>Public Functions</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#QShortcut">QShortcut</a></b> ( QWidget * <i>parent</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#QShortcut-2">QShortcut</a></b> ( const QKeySequence & <i>key</i>, QWidget * <i>parent</i>, const char * <i>member</i> = 0, const char * <i>ambiguousMember</i> = 0, Qt::ShortcutContext <i>context</i> = Qt::WindowShortcut )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#dtor.QShortcut">~QShortcut</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#autoRepeat-prop">autoRepeat</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> Qt::ShortcutContext </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#context-prop">context</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#id">id</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#enabled-prop">isEnabled</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> QKeySequence </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#key-prop">key</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#parentWidget">parentWidget</a></b> () const</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#autoRepeat-prop">setAutoRepeat</a></b> ( bool <i>on</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#context-prop">setContext</a></b> ( Qt::ShortcutContext <i>context</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#enabled-prop">setEnabled</a></b> ( bool <i>enable</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#key-prop">setKey</a></b> ( const QKeySequence & <i>key</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#whatsThis-prop">setWhatsThis</a></b> ( const QString & <i>text</i> )</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#whatsThis-prop">whatsThis</a></b> () const</td></tr>
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</table>
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<ul>
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<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
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</ul>
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<a name="signals"></a>
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<h2>Signals</h2>
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<table class="alignedsummary">
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#activated">activated</a></b> ()</td></tr>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qshortcut.html#activatedAmbiguously">activatedAmbiguously</a></b> ()</td></tr>
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</table>
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<ul>
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<li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
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</ul>
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<h3>Additional Inherited Members</h3>
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<ul>
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<li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
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<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
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<li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
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</ul>
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<a name="details"></a>
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<!-- $$$QShortcut-description -->
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<div class="descr">
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<h2>Detailed Description</h2>
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<p>The QShortcut class is used to create keyboard shortcuts.</p>
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<p>The QShortcut class provides a way of connecting keyboard shortcuts to Qt's <a href="signalsandslots.html#signals-and-slots">signals and slots</a> mechanism, so that objects can be informed when a shortcut is executed. The shortcut can be set up to contain all the key presses necessary to describe a keyboard shortcut, including the states of modifier keys such as <b>Shift</b>, <b>Ctrl</b>, and <b>Alt</b>.</p>
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<a name="mnemonic"></a><p>On certain widgets, using '&' in front of a character will automatically create a mnemonic (a shortcut) for that character, e.g. "E&xit" will create the shortcut <b>Alt+X</b> (use '&&' to display an actual ampersand). The widget might consume and perform an action on a given shortcut. On X11 the ampersand will not be shown and the character will be underlined. On Windows, shortcuts are normally not displayed until the user presses the <b>Alt</b> key, but this is a setting the user can change. On Mac, shortcuts are disabled by default. Call <a href="qtglobal.html#qt_set_sequence_auto_mnemonic">qt_set_sequence_auto_mnemonic</a>() to enable them. However, because mnemonic shortcuts do not fit in with Aqua's guidelines, Qt will not show the shortcut character underlined.</p>
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<p>For applications that use menus, it may be more convenient to use the convenience functions provided in the <a href="qmenu.html">QMenu</a> class to assign keyboard shortcuts to menu items as they are created. Alternatively, shortcuts may be associated with other types of actions in the <a href="qaction.html">QAction</a> class.</p>
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<p>The simplest way to create a shortcut for a particular widget is to construct the shortcut with a key sequence. For example:</p>
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<pre class="cpp"> shortcut <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QShortcut</span>(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span>(tr(<span class="string">"Ctrl+O"</span><span class="operator">,</span> <span class="string">"File|Open"</span>))<span class="operator">,</span>
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parent);</pre>
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<p>When the user types the <a href="qkeysequence.html">key sequence</a> for a given shortcut, the shortcut's <a href="qshortcut.html#activated">activated</a>() signal is emitted. (In the case of ambiguity, the <a href="qshortcut.html#activatedAmbiguously">activatedAmbiguously</a>() signal is emitted.) A shortcut is "listened for" by Qt's event loop when the shortcut's parent widget is receiving events.</p>
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<p>A shortcut's key sequence can be set with <a href="qshortcut.html#key-prop">setKey</a>() and retrieved with <a href="qshortcut.html#key-prop">key</a>(). A shortcut can be enabled or disabled with <a href="qshortcut.html#enabled-prop">setEnabled</a>(), and can have "What's This?" help text set with <a href="qshortcut.html#whatsThis-prop">setWhatsThis</a>().</p>
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</div>
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<p><b>See also </b><a href="qshortcutevent.html">QShortcutEvent</a>, <a href="qkeysequence.html">QKeySequence</a>, and <a href="qaction.html">QAction</a>.</p>
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<!-- @@@QShortcut -->
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<div class="prop">
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<h2>Property Documentation</h2>
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<!-- $$$autoRepeat-prop$$$autoRepeat$$$setAutoRepeatbool -->
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<h3 class="fn"><a name="autoRepeat-prop"></a><span class="name">autoRepeat</span> : <span class="type">bool</span></h3>
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<p>This property holds whether the shortcut can auto repeat.</p>
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<p>If true, the shortcut will auto repeat when the keyboard shortcut combination is held down, provided that keyboard auto repeat is enabled on the system. The default value is true.</p>
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<p>This property was introduced in Qt 4.2.</p>
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<p><b>Access functions:</b></p>
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<table class="alignedsummary">
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<tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><span class="name"><b>autoRepeat</b></span> () const</td></tr>
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<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setAutoRepeat</b></span> ( bool <i>on</i> )</td></tr>
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</table>
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<!-- @@@autoRepeat -->
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<!-- $$$context-prop$$$context$$$setContextQt::ShortcutContext -->
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<h3 class="fn"><a name="context-prop"></a><span class="name">context</span> : <span class="type"><a href="qt.html#ShortcutContext-enum">Qt::ShortcutContext</a></span></h3>
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<p>This property holds the context in which the shortcut is valid.</p>
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<p>A shortcut's context decides in which circumstances a shortcut is allowed to be triggered. The normal context is <a href="qt.html#ShortcutContext-enum">Qt::WindowShortcut</a>, which allows the shortcut to trigger if the parent (the widget containing the shortcut) is a subwidget of the active top-level window.</p>
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<p>By default, this property is set to <a href="qt.html#ShortcutContext-enum">Qt::WindowShortcut</a>.</p>
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<p><b>Access functions:</b></p>
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<table class="alignedsummary">
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<tr><td class="memItemLeft topAlign rightAlign"> Qt::ShortcutContext </td><td class="memItemRight bottomAlign"><span class="name"><b>context</b></span> ()</td></tr>
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<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setContext</b></span> ( Qt::ShortcutContext <i>context</i> )</td></tr>
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</table>
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<!-- @@@context -->
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<!-- $$$enabled-prop$$$isEnabled$$$setEnabledbool -->
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<h3 class="fn"><a name="enabled-prop"></a><span class="name">enabled</span> : <span class="type">bool</span></h3>
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<p>This property holds whether the shortcut is enabled.</p>
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<p>An enabled shortcut emits the <a href="qshortcut.html#activated">activated</a>() or <a href="qshortcut.html#activatedAmbiguously">activatedAmbiguously</a>() signal when a <a href="qshortcutevent.html">QShortcutEvent</a> occurs that matches the shortcut's <a href="qshortcut.html#key-prop">key</a>() sequence.</p>
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<p>If the application is in <tt>WhatsThis</tt> mode the shortcut will not emit the signals, but will show the "What's This?" text instead.</p>
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<p>By default, this property is true.</p>
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<p><b>Access functions:</b></p>
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<table class="alignedsummary">
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<tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><span class="name"><b>isEnabled</b></span> () const</td></tr>
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<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setEnabled</b></span> ( bool <i>enable</i> )</td></tr>
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</table>
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<p><b>See also </b><a href="qshortcut.html#whatsThis-prop">whatsThis</a>.</p>
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<!-- @@@enabled -->
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<!-- $$$key-prop$$$key$$$setKeyconstQKeySequence& -->
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<h3 class="fn"><a name="key-prop"></a><span class="name">key</span> : <span class="type"><a href="qkeysequence.html">QKeySequence</a></span></h3>
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<p>This property holds the shortcut's key sequence.</p>
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<p>This is a key sequence with an optional combination of Shift, Ctrl, and Alt. The key sequence may be supplied in a number of ways:</p>
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<pre class="cpp"> setKey(<span class="number">0</span>); <span class="comment">// no signal emitted</span>
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setKey(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span>()); <span class="comment">// no signal emitted</span>
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setKey(<span class="number">0x3b1</span>); <span class="comment">// Greek letter alpha</span>
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setKey(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_D); <span class="comment">// 'd', e.g. to delete</span>
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setKey(<span class="char">'q'</span>); <span class="comment">// 'q', e.g. to quit</span>
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setKey(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>CTRL <span class="operator">+</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_P); <span class="comment">// Ctrl+P, e.g. to print document</span>
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setKey(<span class="string">"Ctrl+P"</span>); <span class="comment">// Ctrl+P, e.g. to print document</span></pre>
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<p>By default, this property contains an empty key sequence.</p>
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<p><b>Access functions:</b></p>
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<table class="alignedsummary">
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<tr><td class="memItemLeft topAlign rightAlign"> QKeySequence </td><td class="memItemRight bottomAlign"><span class="name"><b>key</b></span> () const</td></tr>
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<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setKey</b></span> ( const QKeySequence & <i>key</i> )</td></tr>
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</table>
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<!-- @@@key -->
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<!-- $$$whatsThis-prop$$$whatsThis$$$setWhatsThisconstQString& -->
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<h3 class="fn"><a name="whatsThis-prop"></a><span class="name">whatsThis</span> : <span class="type"><a href="qstring.html">QString</a></span></h3>
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<p>This property holds the shortcut's "What's This?" help text.</p>
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<p>The text will be shown when the application is in "What's This?" mode and the user types the shortcut <a href="qshortcut.html#key-prop">key</a>() sequence.</p>
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<p>To set "What's This?" help on a menu item (with or without a shortcut key), set the help on the item's action.</p>
|
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<p>By default, this property contains an empty string.</p>
|
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<p><b>Access functions:</b></p>
|
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<table class="alignedsummary">
|
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<tr><td class="memItemLeft topAlign rightAlign"> QString </td><td class="memItemRight bottomAlign"><span class="name"><b>whatsThis</b></span> () const</td></tr>
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<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setWhatsThis</b></span> ( const QString & <i>text</i> )</td></tr>
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</table>
|
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<p><b>See also </b><a href="qwhatsthis.html#inWhatsThisMode">QWhatsThis::inWhatsThisMode</a>() and <a href="qaction.html#whatsThis-prop">QAction::setWhatsThis</a>().</p>
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<!-- @@@whatsThis -->
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</div>
|
|
<div class="func">
|
|
<h2>Member Function Documentation</h2>
|
|
<!-- $$$QShortcut[overload1]$$$QShortcutQWidget* -->
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<h3 class="fn"><a name="QShortcut"></a>QShortcut::<span class="name">QShortcut</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>parent</i> )</h3>
|
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<p>Constructs a <a href="qshortcut.html">QShortcut</a> object for the <i>parent</i> widget. Since no shortcut key sequence is specified, the shortcut will not emit any signals.</p>
|
|
<p><b>See also </b><a href="qshortcut.html#key-prop">setKey</a>().</p>
|
|
<!-- @@@QShortcut -->
|
|
<!-- $$$QShortcut$$$QShortcutconstQKeySequence&QWidget*constchar*constchar*Qt::ShortcutContext -->
|
|
<h3 class="fn"><a name="QShortcut-2"></a>QShortcut::<span class="name">QShortcut</span> ( const <span class="type"><a href="qkeysequence.html">QKeySequence</a></span> & <i>key</i>, <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>parent</i>, const <span class="type">char</span> * <i>member</i> = 0, const <span class="type">char</span> * <i>ambiguousMember</i> = 0, <span class="type"><a href="qt.html#ShortcutContext-enum">Qt::ShortcutContext</a></span> <i>context</i> = Qt::WindowShortcut )</h3>
|
|
<p>Constructs a <a href="qshortcut.html">QShortcut</a> object for the <i>parent</i> widget. The shortcut operates on its parent, listening for <a href="qshortcutevent.html">QShortcutEvent</a>s that match the <i>key</i> sequence. Depending on the ambiguity of the event, the shortcut will call the <i>member</i> function, or the <i>ambiguousMember</i> function, if the key press was in the shortcut's <i>context</i>.</p>
|
|
<!-- @@@QShortcut -->
|
|
<!-- $$$~QShortcut[overload1]$$$~QShortcut -->
|
|
<h3 class="fn"><a name="dtor.QShortcut"></a>QShortcut::<span class="name">~QShortcut</span> ()</h3>
|
|
<p>Destroys the shortcut.</p>
|
|
<!-- @@@~QShortcut -->
|
|
<!-- $$$activated[overload1]$$$activated -->
|
|
<h3 class="fn"><a name="activated"></a><span class="type">void</span> QShortcut::<span class="name">activated</span> ()<tt> [signal]</tt></h3>
|
|
<p>This signal is emitted when the user types the shortcut's key sequence.</p>
|
|
<p><b>See also </b><a href="qshortcut.html#activatedAmbiguously">activatedAmbiguously</a>().</p>
|
|
<!-- @@@activated -->
|
|
<!-- $$$activatedAmbiguously[overload1]$$$activatedAmbiguously -->
|
|
<h3 class="fn"><a name="activatedAmbiguously"></a><span class="type">void</span> QShortcut::<span class="name">activatedAmbiguously</span> ()<tt> [signal]</tt></h3>
|
|
<p>When a key sequence is being typed at the keyboard, it is said to be ambiguous as long as it matches the start of more than one shortcut.</p>
|
|
<p>When a shortcut's key sequence is completed, activatedAmbiguously() is emitted if the key sequence is still ambiguous (i.e., it is the start of one or more other shortcuts). The <a href="qshortcut.html#activated">activated</a>() signal is not emitted in this case.</p>
|
|
<p><b>See also </b><a href="qshortcut.html#activated">activated</a>().</p>
|
|
<!-- @@@activatedAmbiguously -->
|
|
<!-- $$$id[overload1]$$$id -->
|
|
<h3 class="fn"><a name="id"></a><span class="type">int</span> QShortcut::<span class="name">id</span> () const</h3>
|
|
<p>Returns the shortcut's ID.</p>
|
|
<p><b>See also </b><a href="qshortcutevent.html#shortcutId">QShortcutEvent::shortcutId</a>().</p>
|
|
<!-- @@@id -->
|
|
<!-- $$$parentWidget[overload1]$$$parentWidget -->
|
|
<h3 class="fn"><a name="parentWidget"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * QShortcut::<span class="name">parentWidget</span> () const</h3>
|
|
<p>Returns the shortcut's parent widget.</p>
|
|
<!-- @@@parentWidget -->
|
|
</div>
|
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</div>
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</div>
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</div>
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<span></span>
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<p>
|
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<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
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Documentation contributions included herein are the copyrights of
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their respective owners.</p>
|
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<br />
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<p>
|
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The documentation provided herein is licensed under the terms of the
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<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
|
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License version 1.3</a> as published by the Free Software Foundation.</p>
|
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<p>
|
|
Documentation sources may be obtained from <a href="http://www.qt-project.org">
|
|
www.qt-project.org</a>.</p>
|
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<br />
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<p>
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Qt and respective logos are trademarks of The Qt Company Ltd
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in Finland and/or other countries worldwide. All other trademarks are property
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of their respective owners. <a title="Privacy Policy"
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href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
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