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265 lines
16 KiB
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<title>TQButtonGroup 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>TQButtonGroup Class Reference</h1>
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<p>The TQButtonGroup widget organizes TQButton widgets in a group.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qbuttongroup-h.html">ntqbuttongroup.h</a>></tt>
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<p>Inherits <a href="ntqgroupbox.html">TQGroupBox</a>.
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<p>Inherited by <a href="ntqhbuttongroup.html">TQHButtonGroup</a> and <a href="ntqvbuttongroup.html">TQVButtonGroup</a>.
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<p><a href="qbuttongroup-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#TQButtonGroup"><b>TQButtonGroup</b></a> ( TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn><a href="#TQButtonGroup-2"><b>TQButtonGroup</b></a> ( const TQString & title, TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn><a href="#TQButtonGroup-3"><b>TQButtonGroup</b></a> ( int strips, Orientation orientation, TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn><a href="#TQButtonGroup-4"><b>TQButtonGroup</b></a> ( int strips, Orientation orientation, const TQString & title, TQWidget * parent = 0, const char * name = 0 )</li>
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<li class=fn>bool <a href="#isExclusive"><b>isExclusive</b></a> () const</li>
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<li class=fn>bool <a href="#isRadioButtonExclusive"><b>isRadioButtonExclusive</b></a> () const</li>
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<li class=fn>virtual void <a href="#setExclusive"><b>setExclusive</b></a> ( bool )</li>
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<li class=fn>virtual void <a href="#setRadioButtonExclusive"><b>setRadioButtonExclusive</b></a> ( bool )</li>
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<li class=fn>int <a href="#insert"><b>insert</b></a> ( TQButton * button, int id = -1 )</li>
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<li class=fn>void <a href="#remove"><b>remove</b></a> ( TQButton * button )</li>
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<li class=fn>TQButton * <a href="#find"><b>find</b></a> ( int id ) const</li>
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<li class=fn>int <a href="#id"><b>id</b></a> ( TQButton * button ) const</li>
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<li class=fn>int <a href="#count"><b>count</b></a> () const</li>
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<li class=fn>virtual void <a href="#setButton"><b>setButton</b></a> ( int id )</li>
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<li class=fn>virtual void <a href="#moveFocus"><b>moveFocus</b></a> ( int key )</li>
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<li class=fn>TQButton * <a href="#selected"><b>selected</b></a> () const</li>
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<li class=fn>int <a href="#selectedId"><b>selectedId</b></a> () const</li>
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</ul>
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<h2>Signals</h2>
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<ul>
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<li class=fn>void <a href="#pressed"><b>pressed</b></a> ( int id )</li>
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<li class=fn>void <a href="#released"><b>released</b></a> ( int id )</li>
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<li class=fn>void <a href="#clicked"><b>clicked</b></a> ( int id )</li>
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</ul>
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<h2>Properties</h2>
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<ul>
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<li class=fn>bool <a href="#exclusive-prop"><b>exclusive</b></a> - whether the button group is exclusive</li>
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<li class=fn>bool <a href="#radioButtonExclusive-prop"><b>radioButtonExclusive</b></a> - whether the radio buttons in the group are exclusive</li>
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<li class=fn>int <a href="#selectedId-prop"><b>selectedId</b></a> - the selected toggle button</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQButtonGroup widget organizes <a href="ntqbutton.html">TQButton</a> widgets in a group.
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<p>
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<p> A button group widget makes it easier to deal with groups of
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buttons. Each button in a button group has a unique identifier.
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The button group emits a <a href="#clicked">clicked</a>() signal with this identifier
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when a button in the group is clicked. This makes a button group
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particularly useful when you have several similar buttons and want
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to connect all their clicked() signals to a single slot.
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<p> An <a href="#setExclusive">exclusive</a> button group switches
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off all toggle buttons except the one that was clicked. A button
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group is, by default, non-exclusive. Note that all radio buttons
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that are inserted into a button group are mutually exclusive even
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if the button group is non-exclusive. (See
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<a href="#setRadioButtonExclusive">setRadioButtonExclusive</a>().)
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<p> There are two ways of using a button group:
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<ul>
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<li> The button group is the parent widget of a number of buttons,
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i.e. the button group is the parent argument in the button
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constructor. The buttons are assigned identifiers 0, 1, 2, etc.,
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in the order they are created. A TQButtonGroup can display a frame
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and a title because it inherits <a href="ntqgroupbox.html">TQGroupBox</a>.
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<li> The button group is an invisible widget and the contained
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buttons have some other parent widget. In this usage, each button
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must be manually inserted, using <a href="#insert">insert</a>(), into the button group
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and given an identifier.
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</ul>
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<p> A button can be removed from the group with <a href="#remove">remove</a>(). A pointer to
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a button with a given id can be obtained using <a href="#find">find</a>(). The id of a
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button is available using <a href="#id">id</a>(). A button can be set <em>on</em> with
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<a href="#setButton">setButton</a>(). The number of buttons in the group is returned by
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<a href="#count">count</a>().
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<p> <img src=qbttngrp-m.png> <img src=qbttngrp-w.png>
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<p> <p>See also <a href="ntqpushbutton.html">TQPushButton</a>, <a href="ntqcheckbox.html">TQCheckBox</a>, <a href="ntqradiobutton.html">TQRadioButton</a>, <a href="appearance.html">Widget Appearance and Style</a>, <a href="geomanagement.html">Layout Management</a>, and <a href="organizers.html">Organizers</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQButtonGroup"></a>TQButtonGroup::TQButtonGroup ( <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
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</h3>
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Constructs a button group with no title.
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<p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="ntqwidget.html">TQWidget</a>
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constructor.
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<h3 class=fn><a name="TQButtonGroup-2"></a>TQButtonGroup::TQButtonGroup ( const <a href="ntqstring.html">TQString</a> & title, <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
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</h3>
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Constructs a button group with the title <em>title</em>.
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<p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="ntqwidget.html">TQWidget</a>
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constructor.
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<h3 class=fn><a name="TQButtonGroup-3"></a>TQButtonGroup::TQButtonGroup ( int strips, <a href="ntqt.html#Orientation-enum">Orientation</a> orientation, <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
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</h3>
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Constructs a button group with no title. Child widgets will be
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arranged in <em>strips</em> rows or columns (depending on <em>orientation</em>).
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<p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="ntqwidget.html">TQWidget</a>
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constructor.
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<h3 class=fn><a name="TQButtonGroup-4"></a>TQButtonGroup::TQButtonGroup ( int strips, <a href="ntqt.html#Orientation-enum">Orientation</a> orientation, const <a href="ntqstring.html">TQString</a> & title, <a href="ntqwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
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</h3>
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Constructs a button group with title <em>title</em>. Child widgets will
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be arranged in <em>strips</em> rows or columns (depending on <em>orientation</em>).
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<p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="ntqwidget.html">TQWidget</a>
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constructor.
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<h3 class=fn>void <a name="clicked"></a>TQButtonGroup::clicked ( int id )<tt> [signal]</tt>
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</h3>
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<p> This signal is emitted when a button in the group is <a href="ntqbutton.html#clicked">clicked</a>. The <em>id</em> argument is the
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button's identifier.
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<p> <p>See also <a href="#insert">insert</a>().
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<p>Examples: <a href="drawdemo-example.html#x1062">drawdemo/drawdemo.cpp</a> and <a href="xform-example.html#x1221">xform/xform.cpp</a>.
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<h3 class=fn>int <a name="count"></a>TQButtonGroup::count () const
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</h3>
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Returns the number of buttons in the group.
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<h3 class=fn><a href="ntqbutton.html">TQButton</a> * <a name="find"></a>TQButtonGroup::find ( int id ) const
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</h3>
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Returns the button with the specified identifier <em>id</em>, or 0 if
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the button was not found.
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<h3 class=fn>int <a name="id"></a>TQButtonGroup::id ( <a href="ntqbutton.html">TQButton</a> * button ) const
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</h3>
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Returns the id of <em>button</em>, or -1 if <em>button</em> is not a member of
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this group.
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<p> <p>See also <a href="#selectedId-prop">selectedId</a>.
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<h3 class=fn>int <a name="insert"></a>TQButtonGroup::insert ( <a href="ntqbutton.html">TQButton</a> * button, int id = -1 )
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</h3>
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Inserts the <em>button</em> with the identifier <em>id</em> into the button
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group. Returns the button identifier.
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<p> Buttons are normally inserted into a button group automatically by
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passing the button group as the parent when the button is
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constructed. So it is not necessary to manually insert buttons
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that have this button group as their parent widget. An exception
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is when you want custom identifiers instead of the default 0, 1,
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2, etc., or if you want the buttons to have some other parent.
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<p> The button is assigned the identifier <em>id</em> or an automatically
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generated identifier. It works as follows: If <em>id</em> >= 0, this
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identifier is assigned. If <em>id</em> == -1 (default), the identifier
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is equal to the number of buttons in the group. If <em>id</em> is any
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other negative integer, for instance -2, a unique identifier
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(negative integer <= -2) is generated. No button has an id of -1.
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<p> <p>See also <a href="#find">find</a>(), <a href="#remove">remove</a>(), and <a href="#exclusive-prop">exclusive</a>.
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<p>Examples: <a href="listbox-example.html#x1428">listbox/listbox.cpp</a> and <a href="xform-example.html#x1222">xform/xform.cpp</a>.
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<h3 class=fn>bool <a name="isExclusive"></a>TQButtonGroup::isExclusive () const
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</h3><p>Returns TRUE if the button group is exclusive; otherwise returns FALSE.
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See the <a href="ntqbuttongroup.html#exclusive-prop">"exclusive"</a> property for details.
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<h3 class=fn>bool <a name="isRadioButtonExclusive"></a>TQButtonGroup::isRadioButtonExclusive () const
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</h3><p>Returns TRUE if the radio buttons in the group are exclusive; otherwise returns FALSE.
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See the <a href="ntqbuttongroup.html#radioButtonExclusive-prop">"radioButtonExclusive"</a> property for details.
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<h3 class=fn>void <a name="moveFocus"></a>TQButtonGroup::moveFocus ( int key )<tt> [virtual]</tt>
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</h3>
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Moves the <a href="focus.html#keyboard-focus">keyboard focus</a> according to <em>key</em>, and if appropriate
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checks the new focus item.
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<p> This function does nothing unless the keyboard focus points to one
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of the button group members and <em>key</em> is one of <a href="ntqt.html#Key-enum">Key_Up</a>, <a href="ntqt.html#Key-enum">Key_Down</a>, <a href="ntqt.html#Key-enum">Key_Left</a> and <a href="ntqt.html#Key-enum">Key_Right</a>.
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<h3 class=fn>void <a name="pressed"></a>TQButtonGroup::pressed ( int id )<tt> [signal]</tt>
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</h3>
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<p> This signal is emitted when a button in the group is <a href="ntqbutton.html#pressed">pressed</a>. The <em>id</em> argument is the
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button's identifier.
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<p> <p>See also <a href="#insert">insert</a>().
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<h3 class=fn>void <a name="released"></a>TQButtonGroup::released ( int id )<tt> [signal]</tt>
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</h3>
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<p> This signal is emitted when a button in the group is <a href="ntqbutton.html#released">released</a>. The <em>id</em> argument is the
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button's identifier.
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<p> <p>See also <a href="#insert">insert</a>().
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<h3 class=fn>void <a name="remove"></a>TQButtonGroup::remove ( <a href="ntqbutton.html">TQButton</a> * button )
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</h3>
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Removes the <em>button</em> from the button group.
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<p> <p>See also <a href="#insert">insert</a>().
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<h3 class=fn><a href="ntqbutton.html">TQButton</a> * <a name="selected"></a>TQButtonGroup::selected () const
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</h3>
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Returns the selected toggle button if exactly one is selected;
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otherwise returns 0.
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<p> <p>See also <a href="#selectedId-prop">selectedId</a>.
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<h3 class=fn>int <a name="selectedId"></a>TQButtonGroup::selectedId () const
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</h3><p>Returns the selected toggle button.
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See the <a href="ntqbuttongroup.html#selectedId-prop">"selectedId"</a> property for details.
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<h3 class=fn>void <a name="setButton"></a>TQButtonGroup::setButton ( int id )<tt> [virtual]</tt>
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</h3><p>Sets the selected toggle button to <em>id</em>.
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See the <a href="ntqbuttongroup.html#selectedId-prop">"selectedId"</a> property for details.
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<h3 class=fn>void <a name="setExclusive"></a>TQButtonGroup::setExclusive ( bool )<tt> [virtual]</tt>
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</h3><p>Sets whether the button group is exclusive.
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See the <a href="ntqbuttongroup.html#exclusive-prop">"exclusive"</a> property for details.
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<h3 class=fn>void <a name="setRadioButtonExclusive"></a>TQButtonGroup::setRadioButtonExclusive ( bool )<tt> [virtual]</tt>
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</h3><p>Sets whether the radio buttons in the group are exclusive.
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See the <a href="ntqbuttongroup.html#radioButtonExclusive-prop">"radioButtonExclusive"</a> property for details.
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<hr><h2>Property Documentation</h2>
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<h3 class=fn>bool <a name="exclusive-prop"></a>exclusive</h3>
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<p>This property holds whether the button group is exclusive.
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<p>If this property is TRUE, then the buttons in the group are
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toggled, and to untoggle a button you must click on another button
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in the group. The default value is FALSE.
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<p>Set this property's value with <a href="#setExclusive">setExclusive</a>() and get this property's value with <a href="#isExclusive">isExclusive</a>().
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<h3 class=fn>bool <a name="radioButtonExclusive-prop"></a>radioButtonExclusive</h3>
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<p>This property holds whether the radio buttons in the group are exclusive.
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<p>If this property is TRUE (the default), the <a href="ntqradiobutton.html">radiobuttons</a> in the group are treated exclusively.
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<p>Set this property's value with <a href="#setRadioButtonExclusive">setRadioButtonExclusive</a>() and get this property's value with <a href="#isRadioButtonExclusive">isRadioButtonExclusive</a>().
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<h3 class=fn>int <a name="selectedId-prop"></a>selectedId</h3>
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<p>This property holds the selected toggle button.
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<p>The toggle button is specified as an ID.
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<p> If no toggle button is selected, this property holds -1.
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<p> If <a href="#setButton">setButton</a>() is called on an exclusive group, the button with
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the given id will be set to on and all the others will be set to
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off.
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<p> <p>See also <a href="#selected">selected</a>().
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<p>Set this property's value with <a href="#setButton">setButton</a>() and get this property's value with <a href="#selectedId">selectedId</a>().
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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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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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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