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authorTimothy Pearson <[email protected]>2011-11-08 12:31:36 -0600
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+<title>TQActionGroup Class</title>
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+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQActionGroup Class Reference</h1>
+
+<p>The TQActionGroup class groups actions together.
+<a href="#details">More...</a>
+<p><tt>#include &lt;<a href="qaction-h.html">qaction.h</a>&gt;</tt>
+<p>Inherits <a href="qaction.html">TQAction</a>.
+<p><a href="qactiongroup-members.html">List of all member functions.</a>
+<h2>Public Members</h2>
+<ul>
+<li class=fn><a href="#TQActionGroup"><b>TQActionGroup</b></a> ( TQObject&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )</li>
+<li class=fn><a href="#TQActionGroup-2"><b>TQActionGroup</b></a> ( TQObject&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name, bool&nbsp;exclusive )</li>
+<li class=fn><a href="#~TQActionGroup"><b>~TQActionGroup</b></a> ()</li>
+<li class=fn>void <a href="#setExclusive"><b>setExclusive</b></a> ( bool )</li>
+<li class=fn>bool <a href="#isExclusive"><b>isExclusive</b></a> () const</li>
+<li class=fn>void <a href="#add"><b>add</b></a> ( TQAction&nbsp;*&nbsp;action )</li>
+<li class=fn>void <a href="#addSeparator"><b>addSeparator</b></a> ()</li>
+<li class=fn>virtual bool <a href="#addTo"><b>addTo</b></a> ( TQWidget&nbsp;*&nbsp;w )</li>
+<li class=fn>void <a href="#setUsesDropDown"><b>setUsesDropDown</b></a> ( bool&nbsp;enable )</li>
+<li class=fn>bool <a href="#usesDropDown"><b>usesDropDown</b></a> () const</li>
+<li class=fn>void insert ( TQAction&nbsp;*&nbsp;a ) &nbsp;<em>(obsolete)</em></li>
+</ul>
+<h2>Signals</h2>
+<ul>
+<li class=fn>void <a href="#selected"><b>selected</b></a> ( TQAction * )</li>
+</ul>
+<h2>Properties</h2>
+<ul>
+<li class=fn>bool <a href="#exclusive-prop"><b>exclusive</b></a>&nbsp;- whether the action group does exclusive toggling</li>
+<li class=fn>bool <a href="#usesDropDown-prop"><b>usesDropDown</b></a>&nbsp;- whether the group's actions are displayed in a subwidget of the widgets the action group is added to</li>
+</ul>
+<hr><a name="details"></a><h2>Detailed Description</h2>
+
+
+The TQActionGroup class groups actions together.
+<p>
+
+<p> In some situations it is useful to group actions together. For
+example, if you have a left justify action, a right justify action
+and a center action, only one of these actions should be active at
+any one time, and one simple way of achieving this is to group the
+actions together in an action group.
+<p> An action group can also be added to a menu or a toolbar as a
+single unit, with all the actions within the action group
+appearing as separate menu options and toolbar buttons.
+<p> Here's an example from examples/textedit:
+
+
+<pre> TQActionGroup *grp = new TQActionGroup( this );
+ <a name="x2112"></a> <a href="qobject.html#connect">connect</a>( grp, SIGNAL( <a href="#selected">selected</a>( <a href="qaction.html">TQAction</a>* ) ), this, SLOT( textAlign( <a href="qaction.html">TQAction</a>* ) ) );
+</pre>
+<p> Here we create a new action group. Since the action group is exclusive
+by default, only one of the actions in the group is ever active at any
+one time. We then connect the group's <a href="#selected">selected</a>() signal to our
+textAlign() slot.
+<p> <pre> <a name="x2113"></a> actionAlignLeft = new <a href="qaction.html">TQAction</a>( TQPixmap::<a href="qpixmap.html#fromMimeSource">fromMimeSource</a>( "textleft.xpm" ), tr( "&amp;Left" ), CTRL + Key_L, grp, "textLeft" );
+ <a name="x2111"></a> actionAlignLeft-&gt;<a href="qaction.html#setToggleAction">setToggleAction</a>( TRUE );
+</pre>
+<p> We create a left align action, add it to the toolbar and the menu
+and make it a toggle action. We create center and right align
+actions in exactly the same way.
+<p>
+The actions in an action group emit their <a href="qaction.html#activated">activated</a>() (and for
+toggle actions, <a href="qaction.html#toggled">toggled</a>()) signals as usual.
+<p> The <a href="#setExclusive">setExclusive</a>() function is used to ensure that only one action
+is active at any one time: it should be used with actions which
+have their <a href="qaction.html#toggleAction-prop">toggleAction</a> set to TRUE.
+<p> Action group actions appear as individual menu options and toolbar
+buttons. For exclusive action groups use <a href="#setUsesDropDown">setUsesDropDown</a>() to
+display the actions in a subwidget of any widget the action group
+is added to. For example, the actions would appear in a combobox
+in a toolbar or as a submenu in a menu.
+<p> Actions can be added to an action group using <a href="#add">add</a>(), but normally
+they are added by creating the action with the action group as
+parent. Actions can have separators dividing them using
+<a href="#addSeparator">addSeparator</a>(). Action groups are added to widgets with <a href="#addTo">addTo</a>().
+<p>See also <a href="application.html">Main Window and Related Classes</a> and <a href="basic.html">Basic Widgets</a>.
+
+<hr><h2>Member Function Documentation</h2>
+<h3 class=fn><a name="TQActionGroup"></a>TQActionGroup::TQActionGroup ( <a href="qobject.html">TQObject</a>&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )
+</h3>
+Constructs an action group called <em>name</em>, with parent <em>parent</em>.
+<p> The action group is exclusive by default. Call <a href="#setExclusive">setExclusive</a>(FALSE) to make
+the action group non-exclusive.
+
+<h3 class=fn><a name="TQActionGroup-2"></a>TQActionGroup::TQActionGroup ( <a href="qobject.html">TQObject</a>&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name, bool&nbsp;exclusive )
+</h3>
+Constructs an action group called <em>name</em>, with parent <em>parent</em>.
+<p> If <em>exclusive</em> is TRUE only one toggle action in the group will
+ever be active.
+<p> <p>See also <a href="#exclusive-prop">exclusive</a>.
+
+<h3 class=fn><a name="~TQActionGroup"></a>TQActionGroup::~TQActionGroup ()
+</h3>
+Destroys the object and frees allocated resources.
+
+<h3 class=fn>void <a name="add"></a>TQActionGroup::add ( <a href="qaction.html">TQAction</a>&nbsp;*&nbsp;action )
+</h3>
+Adds action <em>action</em> to this group.
+<p> Normally an action is added to a group by creating it with the
+group as parent, so this function is not usually used.
+<p> <p>See also <a href="#addTo">addTo</a>().
+
+<h3 class=fn>void <a name="addSeparator"></a>TQActionGroup::addSeparator ()
+</h3>
+Adds a separator to the group.
+
+<h3 class=fn>bool <a name="addTo"></a>TQActionGroup::addTo ( <a href="qwidget.html">TQWidget</a>&nbsp;*&nbsp;w )<tt> [virtual]</tt>
+</h3>
+Adds this action group to the widget <em>w</em>.
+<p> If <a href="#isExclusive">isExclusive</a>() is FALSE or <a href="#usesDropDown">usesDropDown</a>() is FALSE, the actions within
+the group are added to the widget individually. For example, if the widget
+is a menu, the actions will appear as individual menu options, and
+if the widget is a toolbar, the actions will appear as toolbar buttons.
+<p> If both isExclusive() and usesDropDown() are TRUE, the actions
+are presented either in a combobox (if <em>w</em> is a toolbar) or in a
+submenu (if <em>w</em> is a menu).
+<p> All actions should be added to the action group <em>before</em> the
+action group is added to the widget. If actions are added to the
+action group <em>after</em> the action group has been added to the
+widget these later actions will <em>not</em> appear.
+<p> <p>See also <a href="#exclusive-prop">exclusive</a>, <a href="#usesDropDown-prop">usesDropDown</a>, and <a href="qaction.html#removeFrom">removeFrom</a>().
+
+<p>Example: <a href="themes-example.html#x318">themes/themes.cpp</a>.
+<p>Reimplemented from <a href="qaction.html#addTo">TQAction</a>.
+<h3 class=fn>void <a name="insert"></a>TQActionGroup::insert ( <a href="qaction.html">TQAction</a>&nbsp;*&nbsp;a )
+</h3>
+<p> <b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
+<p> Use <a href="#add">add</a>() instead, or better still create the action with the action
+group as its parent.
+
+<h3 class=fn>bool <a name="isExclusive"></a>TQActionGroup::isExclusive () const
+</h3><p>Returns TRUE if the action group does exclusive toggling; otherwise returns FALSE.
+See the <a href="qactiongroup.html#exclusive-prop">"exclusive"</a> property for details.
+<h3 class=fn>void <a name="selected"></a>TQActionGroup::selected ( <a href="qaction.html">TQAction</a>&nbsp;* )<tt> [signal]</tt>
+</h3>
+
+<p> This signal is emitted from exclusive groups when toggle actions
+change state.
+<p> The argument is the action whose state changed to "on".
+<p> <p>See also <a href="#exclusive-prop">exclusive</a>, <a href="qaction.html#on-prop">on</a>, and <a href="qaction.html#toggled">TQAction::toggled</a>().
+
+<p>Examples: <a href="canvas-chart-example.html#x2873">chart/chartform.cpp</a> and <a href="qactiongroup.html#x2112">textedit/textedit.cpp</a>.
+<h3 class=fn>void <a name="setExclusive"></a>TQActionGroup::setExclusive ( bool )
+</h3><p>Sets whether the action group does exclusive toggling.
+See the <a href="qactiongroup.html#exclusive-prop">"exclusive"</a> property for details.
+<h3 class=fn>void <a name="setUsesDropDown"></a>TQActionGroup::setUsesDropDown ( bool&nbsp;enable )
+</h3><p>Sets whether the group's actions are displayed in a subwidget of the widgets the action group is added to to <em>enable</em>.
+See the <a href="qactiongroup.html#usesDropDown-prop">"usesDropDown"</a> property for details.
+<h3 class=fn>bool <a name="usesDropDown"></a>TQActionGroup::usesDropDown () const
+</h3><p>Returns TRUE if the group's actions are displayed in a subwidget of the widgets the action group is added to; otherwise returns FALSE.
+See the <a href="qactiongroup.html#usesDropDown-prop">"usesDropDown"</a> property for details.
+<hr><h2>Property Documentation</h2>
+<h3 class=fn>bool <a name="exclusive-prop"></a>exclusive</h3>
+<p>This property holds whether the action group does exclusive toggling.
+<p>If exclusive is TRUE only one toggle action in the action group
+can ever be active at any one time. If the user chooses another
+toggle action in the group the one they chose becomes active and
+the one that was active becomes inactive.
+<p> <p>See also <a href="qaction.html#toggleAction-prop">TQAction::toggleAction</a>.
+
+<p>Set this property's value with <a href="#setExclusive">setExclusive</a>() and get this property's value with <a href="#isExclusive">isExclusive</a>().
+<h3 class=fn>bool <a name="usesDropDown-prop"></a>usesDropDown</h3>
+<p>This property holds whether the group's actions are displayed in a subwidget of the widgets the action group is added to.
+<p>Exclusive action groups added to a toolbar display their actions
+in a combobox with the action's <a href="qaction.html#text-prop">TQAction::text</a> and <a href="qaction.html#iconSet-prop">TQAction::iconSet</a> properties shown. Non-exclusive groups are
+represented by a tool button showing their <a href="qaction.html#iconSet-prop">TQAction::iconSet</a> and
+-- depending on <a href="qmainwindow.html#usesTextLabel">TQMainWindow::usesTextLabel</a>() -- <a href="qaction.html#text">text</a>()
+property.
+<p> In a popup menu the member actions are displayed in a submenu.
+<p> Changing usesDropDown only affects <em>subsequent</em> calls to <a href="#addTo">addTo</a>().
+<p> Note that setting this property for actions in a combobox causes
+calls to their <a href="qaction.html#setVisible">TQAction::setVisible</a>(),
+<a href="qaction.html#setEnabled">TQAction::setEnabled</a>(), and
+<a href="qaction.html#setDisabled">TQAction::setDisabled</a>() functions to have no effect.
+<p> This property's default is FALSE.
+<p>
+<p>Set this property's value with <a href="#setUsesDropDown">setUsesDropDown</a>() and get this property's value with <a href="#usesDropDown">usesDropDown</a>().
+<!-- eof -->
+<hr><p>
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+<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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+<td align=right><div align=right>TQt 3.3.8</div>
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