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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QButtonGroup Class Reference</h1>
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| 33 |
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| 34 | <p>The QButtonGroup widget organizes QButton widgets in a group.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>></tt>
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| 37 | <p>Inherits <a href="qgroupbox.html">QGroupBox</a>.
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| 38 | <p>Inherited by <a href="qhbuttongroup.html">QHButtonGroup</a> and <a href="qvbuttongroup.html">QVButtonGroup</a>.
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| 39 | <p><a href="qbuttongroup-members.html">List of all member functions.</a>
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| 40 | <h2>Public Members</h2>
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| 41 | <ul>
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| 42 | <li class=fn><a href="#QButtonGroup"><b>QButtonGroup</b></a> ( QWidget * parent = 0, const char * name = 0 )</li>
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| 43 | <li class=fn><a href="#QButtonGroup-2"><b>QButtonGroup</b></a> ( const QString & title, QWidget * parent = 0, const char * name = 0 )</li>
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| 44 | <li class=fn><a href="#QButtonGroup-3"><b>QButtonGroup</b></a> ( int strips, Orientation orientation, QWidget * parent = 0, const char * name = 0 )</li>
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| 45 | <li class=fn><a href="#QButtonGroup-4"><b>QButtonGroup</b></a> ( int strips, Orientation orientation, const QString & title, QWidget * parent = 0, const char * name = 0 )</li>
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| 46 | <li class=fn>bool <a href="#isExclusive"><b>isExclusive</b></a> () const</li>
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| 47 | <li class=fn>bool <a href="#isRadioButtonExclusive"><b>isRadioButtonExclusive</b></a> () const</li>
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| 48 | <li class=fn>virtual void <a href="#setExclusive"><b>setExclusive</b></a> ( bool )</li>
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| 49 | <li class=fn>virtual void <a href="#setRadioButtonExclusive"><b>setRadioButtonExclusive</b></a> ( bool )</li>
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| 50 | <li class=fn>int <a href="#insert"><b>insert</b></a> ( QButton * button, int id = -1 )</li>
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| 51 | <li class=fn>void <a href="#remove"><b>remove</b></a> ( QButton * button )</li>
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| 52 | <li class=fn>QButton * <a href="#find"><b>find</b></a> ( int id ) const</li>
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| 53 | <li class=fn>int <a href="#id"><b>id</b></a> ( QButton * button ) const</li>
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| 54 | <li class=fn>int <a href="#count"><b>count</b></a> () const</li>
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| 55 | <li class=fn>virtual void <a href="#setButton"><b>setButton</b></a> ( int id )</li>
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| 56 | <li class=fn>virtual void <a href="#moveFocus"><b>moveFocus</b></a> ( int key )</li>
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| 57 | <li class=fn>QButton * <a href="#selected"><b>selected</b></a> () const</li>
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| 58 | <li class=fn>int <a href="#selectedId"><b>selectedId</b></a> () const</li>
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| 59 | </ul>
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| 60 | <h2>Signals</h2>
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| 61 | <ul>
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| 62 | <li class=fn>void <a href="#pressed"><b>pressed</b></a> ( int id )</li>
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| 63 | <li class=fn>void <a href="#released"><b>released</b></a> ( int id )</li>
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| 64 | <li class=fn>void <a href="#clicked"><b>clicked</b></a> ( int id )</li>
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| 65 | </ul>
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| 66 | <h2>Properties</h2>
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| 67 | <ul>
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| 68 | <li class=fn>bool <a href="#exclusive-prop"><b>exclusive</b></a> - whether the button group is exclusive</li>
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| 69 | <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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| 70 | <li class=fn>int <a href="#selectedId-prop"><b>selectedId</b></a> - the selected toggle button</li>
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| 71 | </ul>
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| 72 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 73 |
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| 74 |
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| 75 | The QButtonGroup widget organizes <a href="qbutton.html">QButton</a> widgets in a group.
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| 76 | <p>
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| 77 |
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| 78 |
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| 79 |
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| 80 | <p> A button group widget makes it easier to deal with groups of
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| 81 | buttons. Each button in a button group has a unique identifier.
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| 82 | The button group emits a <a href="#clicked">clicked</a>() signal with this identifier
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| 83 | when a button in the group is clicked. This makes a button group
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| 84 | particularly useful when you have several similar buttons and want
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| 85 | to connect all their clicked() signals to a single slot.
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| 86 | <p> An <a href="#setExclusive">exclusive</a> button group switches
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| 87 | off all toggle buttons except the one that was clicked. A button
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| 88 | group is, by default, non-exclusive. Note that all radio buttons
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| 89 | that are inserted into a button group are mutually exclusive even
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| 90 | if the button group is non-exclusive. (See
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| 91 | <a href="#setRadioButtonExclusive">setRadioButtonExclusive</a>().)
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| 92 | <p> There are two ways of using a button group:
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| 93 | <ul>
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| 94 | <li> The button group is the parent widget of a number of buttons,
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| 95 | i.e. the button group is the parent argument in the button
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| 96 | constructor. The buttons are assigned identifiers 0, 1, 2, etc.,
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| 97 | in the order they are created. A QButtonGroup can display a frame
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| 98 | and a title because it inherits <a href="qgroupbox.html">QGroupBox</a>.
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| 99 | <li> The button group is an invisible widget and the contained
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| 100 | buttons have some other parent widget. In this usage, each button
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| 101 | must be manually inserted, using <a href="#insert">insert</a>(), into the button group
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| 102 | and given an identifier.
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| 103 | </ul>
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| 104 | <p> A button can be removed from the group with <a href="#remove">remove</a>(). A pointer to
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| 105 | a button with a given id can be obtained using <a href="#find">find</a>(). The id of a
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| 106 | button is available using <a href="#id">id</a>(). A button can be set <em>on</em> with
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| 107 | <a href="#setButton">setButton</a>(). The number of buttons in the group is returned by
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| 108 | <a href="#count">count</a>().
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| 109 | <p> <img src=qbttngrp-m.png> <img src=qbttngrp-w.png>
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| 110 | <p> <p>See also <a href="qpushbutton.html">QPushButton</a>, <a href="qcheckbox.html">QCheckBox</a>, <a href="qradiobutton.html">QRadioButton</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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| 111 |
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| 112 | <hr><h2>Member Function Documentation</h2>
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| 113 | <h3 class=fn><a name="QButtonGroup"></a>QButtonGroup::QButtonGroup ( <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0 )
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| 114 | </h3>
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| 115 | Constructs a button group with no title.
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| 116 | <p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qwidget.html">QWidget</a>
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| 117 | constructor.
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| 118 |
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| 119 | <h3 class=fn><a name="QButtonGroup-2"></a>QButtonGroup::QButtonGroup ( const <a href="qstring.html">QString</a> & title, <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0 )
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| 120 | </h3>
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| 121 | Constructs a button group with the title <em>title</em>.
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| 122 | <p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qwidget.html">QWidget</a>
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| 123 | constructor.
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| 124 |
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| 125 | <h3 class=fn><a name="QButtonGroup-3"></a>QButtonGroup::QButtonGroup ( int strips, <a href="qt.html#Orientation-enum">Orientation</a> orientation, <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0 )
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| 126 | </h3>
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| 127 | Constructs a button group with no title. Child widgets will be
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| 128 | arranged in <em>strips</em> rows or columns (depending on <em>orientation</em>).
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| 129 | <p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qwidget.html">QWidget</a>
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| 130 | constructor.
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| 131 |
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| 132 | <h3 class=fn><a name="QButtonGroup-4"></a>QButtonGroup::QButtonGroup ( int strips, <a href="qt.html#Orientation-enum">Orientation</a> orientation, const <a href="qstring.html">QString</a> & title, <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0 )
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| 133 | </h3>
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| 134 | Constructs a button group with title <em>title</em>. Child widgets will
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| 135 | be arranged in <em>strips</em> rows or columns (depending on <em>orientation</em>).
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| 136 | <p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qwidget.html">QWidget</a>
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| 137 | constructor.
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| 138 |
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| 139 | <h3 class=fn>void <a name="clicked"></a>QButtonGroup::clicked ( int id )<tt> [signal]</tt>
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| 140 | </h3>
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| 141 |
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| 142 | <p> This signal is emitted when a button in the group is <a href="qbutton.html#clicked">clicked</a>. The <em>id</em> argument is the
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| 143 | button's identifier.
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| 144 | <p> <p>See also <a href="#insert">insert</a>().
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| 145 |
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| 146 | <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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| 147 | <h3 class=fn>int <a name="count"></a>QButtonGroup::count () const
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| 148 | </h3>
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| 149 | Returns the number of buttons in the group.
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| 150 |
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| 151 | <h3 class=fn><a href="qbutton.html">QButton</a> * <a name="find"></a>QButtonGroup::find ( int id ) const
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| 152 | </h3>
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| 153 | Returns the button with the specified identifier <em>id</em>, or 0 if
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| 154 | the button was not found.
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| 155 |
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| 156 | <h3 class=fn>int <a name="id"></a>QButtonGroup::id ( <a href="qbutton.html">QButton</a> * button ) const
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| 157 | </h3>
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| 158 | Returns the id of <em>button</em>, or -1 if <em>button</em> is not a member of
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| 159 | this group.
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| 160 | <p> <p>See also <a href="#selectedId-prop">selectedId</a>.
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| 161 |
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| 162 | <h3 class=fn>int <a name="insert"></a>QButtonGroup::insert ( <a href="qbutton.html">QButton</a> * button, int id = -1 )
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| 163 | </h3>
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| 164 | Inserts the <em>button</em> with the identifier <em>id</em> into the button
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| 165 | group. Returns the button identifier.
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| 166 | <p> Buttons are normally inserted into a button group automatically by
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| 167 | passing the button group as the parent when the button is
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| 168 | constructed. So it is not necessary to manually insert buttons
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| 169 | that have this button group as their parent widget. An exception
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| 170 | is when you want custom identifiers instead of the default 0, 1,
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| 171 | 2, etc., or if you want the buttons to have some other parent.
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| 172 | <p> The button is assigned the identifier <em>id</em> or an automatically
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| 173 | generated identifier. It works as follows: If <em>id</em> >= 0, this
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| 174 | identifier is assigned. If <em>id</em> == -1 (default), the identifier
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| 175 | is equal to the number of buttons in the group. If <em>id</em> is any
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| 176 | other negative integer, for instance -2, a unique identifier
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| 177 | (negative integer <= -2) is generated. No button has an id of -1.
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| 178 | <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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| 179 |
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| 180 | <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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| 181 | <h3 class=fn>bool <a name="isExclusive"></a>QButtonGroup::isExclusive () const
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| 182 | </h3><p>Returns TRUE if the button group is exclusive; otherwise returns FALSE.
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| 183 | See the <a href="qbuttongroup.html#exclusive-prop">"exclusive"</a> property for details.
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| 184 | <h3 class=fn>bool <a name="isRadioButtonExclusive"></a>QButtonGroup::isRadioButtonExclusive () const
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| 185 | </h3><p>Returns TRUE if the radio buttons in the group are exclusive; otherwise returns FALSE.
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| 186 | See the <a href="qbuttongroup.html#radioButtonExclusive-prop">"radioButtonExclusive"</a> property for details.
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| 187 | <h3 class=fn>void <a name="moveFocus"></a>QButtonGroup::moveFocus ( int key )<tt> [virtual]</tt>
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| 188 | </h3>
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| 189 | Moves the <a href="focus.html#keyboard-focus">keyboard focus</a> according to <em>key</em>, and if appropriate
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| 190 | checks the new focus item.
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| 191 | <p> This function does nothing unless the keyboard focus points to one
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| 192 | of the button group members and <em>key</em> is one of <a href="qt.html#Key-enum">Key_Up</a>, <a href="qt.html#Key-enum">Key_Down</a>, <a href="qt.html#Key-enum">Key_Left</a> and <a href="qt.html#Key-enum">Key_Right</a>.
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| 193 |
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| 194 | <h3 class=fn>void <a name="pressed"></a>QButtonGroup::pressed ( int id )<tt> [signal]</tt>
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| 195 | </h3>
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| 196 |
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| 197 | <p> This signal is emitted when a button in the group is <a href="qbutton.html#pressed">pressed</a>. The <em>id</em> argument is the
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| 198 | button's identifier.
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| 199 | <p> <p>See also <a href="#insert">insert</a>().
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| 200 |
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| 201 | <h3 class=fn>void <a name="released"></a>QButtonGroup::released ( int id )<tt> [signal]</tt>
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| 202 | </h3>
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| 203 |
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| 204 | <p> This signal is emitted when a button in the group is <a href="qbutton.html#released">released</a>. The <em>id</em> argument is the
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| 205 | button's identifier.
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| 206 | <p> <p>See also <a href="#insert">insert</a>().
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| 207 |
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| 208 | <h3 class=fn>void <a name="remove"></a>QButtonGroup::remove ( <a href="qbutton.html">QButton</a> * button )
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| 209 | </h3>
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| 210 | Removes the <em>button</em> from the button group.
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| 211 | <p> <p>See also <a href="#insert">insert</a>().
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| 212 |
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| 213 | <h3 class=fn><a href="qbutton.html">QButton</a> * <a name="selected"></a>QButtonGroup::selected () const
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| 214 | </h3>
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| 215 | Returns the selected toggle button if exactly one is selected;
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| 216 | otherwise returns 0.
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| 217 | <p> <p>See also <a href="#selectedId-prop">selectedId</a>.
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| 218 |
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| 219 | <h3 class=fn>int <a name="selectedId"></a>QButtonGroup::selectedId () const
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| 220 | </h3><p>Returns the selected toggle button.
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| 221 | See the <a href="qbuttongroup.html#selectedId-prop">"selectedId"</a> property for details.
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| 222 | <h3 class=fn>void <a name="setButton"></a>QButtonGroup::setButton ( int id )<tt> [virtual]</tt>
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| 223 | </h3><p>Sets the selected toggle button to <em>id</em>.
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| 224 | See the <a href="qbuttongroup.html#selectedId-prop">"selectedId"</a> property for details.
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| 225 | <h3 class=fn>void <a name="setExclusive"></a>QButtonGroup::setExclusive ( bool )<tt> [virtual]</tt>
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| 226 | </h3><p>Sets whether the button group is exclusive.
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| 227 | See the <a href="qbuttongroup.html#exclusive-prop">"exclusive"</a> property for details.
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| 228 | <h3 class=fn>void <a name="setRadioButtonExclusive"></a>QButtonGroup::setRadioButtonExclusive ( bool )<tt> [virtual]</tt>
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| 229 | </h3><p>Sets whether the radio buttons in the group are exclusive.
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| 230 | See the <a href="qbuttongroup.html#radioButtonExclusive-prop">"radioButtonExclusive"</a> property for details.
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| 231 | <hr><h2>Property Documentation</h2>
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| 232 | <h3 class=fn>bool <a name="exclusive-prop"></a>exclusive</h3>
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| 233 | <p>This property holds whether the button group is exclusive.
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| 234 | <p>If this property is TRUE, then the buttons in the group are
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| 235 | toggled, and to untoggle a button you must click on another button
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| 236 | in the group. The default value is FALSE.
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| 237 |
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| 238 | <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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| 239 | <h3 class=fn>bool <a name="radioButtonExclusive-prop"></a>radioButtonExclusive</h3>
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| 240 | <p>This property holds whether the radio buttons in the group are exclusive.
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| 241 | <p>If this property is TRUE (the default), the <a href="qradiobutton.html">radiobuttons</a> in the group are treated exclusively.
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| 242 |
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| 243 | <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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| 244 | <h3 class=fn>int <a name="selectedId-prop"></a>selectedId</h3>
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| 245 | <p>This property holds the selected toggle button.
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| 246 | <p>The toggle button is specified as an ID.
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| 247 | <p> If no toggle button is selected, this property holds -1.
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| 248 | <p> If <a href="#setButton">setButton</a>() is called on an exclusive group, the button with
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| 249 | the given id will be set to on and all the others will be set to
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| 250 | off.
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| 251 | <p> <p>See also <a href="#selected">selected</a>().
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| 252 |
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| 253 | <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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| 254 | <!-- eof -->
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| 255 | <hr><p>
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| 256 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 257 | Copyright © 1995-2007
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| 258 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 259 | <table width=100% cellspacing=0 border=0><tr>
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| 260 | <td>Copyright © 2007
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| 261 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 262 | <td align=right><div align=right>Qt 3.3.8</div>
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| 263 | </table></div></address></body>
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| 264 | </html>
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