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<?xml version="1.0" encoding="iso-8859-1"?>
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<html><head><title>QButtonGroup Class Reference</title><style>h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm }
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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QButtonGroup Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QButtonGroup class provides a container to organize groups
of button widgets. <a href="#details">More...</a></p>
<p>Inherits <a href="qobject.html">QObject</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qbuttongroup.html#QButtonGroup">__init__</a></b> (<i>self</i>, QObject <i>parent</i> = None)</li><li><div class="fn" /><b><a href="qbuttongroup.html#addButton">addButton</a></b> (<i>self</i>, QAbstractButton)</li><li><div class="fn" /><b><a href="qbuttongroup.html#addButton-2">addButton</a></b> (<i>self</i>, QAbstractButton, int <i>id</i>)</li><li><div class="fn" />QAbstractButton <b><a href="qbuttongroup.html#button">button</a></b> (<i>self</i>, int <i>id</i>)</li><li><div class="fn" />unknown-type <b><a href="qbuttongroup.html#buttons">buttons</a></b> (<i>self</i>)</li><li><div class="fn" />QAbstractButton <b><a href="qbuttongroup.html#checkedButton">checkedButton</a></b> (<i>self</i>)</li><li><div class="fn" />int <b><a href="qbuttongroup.html#checkedId">checkedId</a></b> (<i>self</i>)</li><li><div class="fn" />bool <b><a href="qbuttongroup.html#exclusive">exclusive</a></b> (<i>self</i>)</li><li><div class="fn" />int <b><a href="qbuttongroup.html#id">id</a></b> (<i>self</i>, QAbstractButton <i>button</i>)</li><li><div class="fn" /><b><a href="qbuttongroup.html#removeButton">removeButton</a></b> (<i>self</i>, QAbstractButton)</li><li><div class="fn" /><b><a href="qbuttongroup.html#setExclusive">setExclusive</a></b> (<i>self</i>, bool)</li><li><div class="fn" /><b><a href="qbuttongroup.html#setId">setId</a></b> (<i>self</i>, QAbstractButton <i>button</i>, int <i>id</i>)</li></ul><h3>Qt Signals</h3><ul><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonClicked">buttonClicked</a></b> ( ::QAbstractButton*)</li><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonClicked-2">buttonClicked</a></b> (int)</li><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonPressed">buttonPressed</a></b> ( ::QAbstractButton*)</li><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonPressed-2">buttonPressed</a></b> (int)</li><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonReleased">buttonReleased</a></b> ( ::QAbstractButton*)</li><li><div class="fn" />void <b><a href="qbuttongroup.html#buttonReleased-2">buttonReleased</a></b> (int)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QButtonGroup class provides a container to organize groups
of button widgets.</p>
<p>QButtonGroup provides an abstract container into which button
widgets can be placed. It does not provide a visual representation
of this container (see <a href="qgroupbox.html">QGroupBox</a> for a
container widget), but instead manages the states of each of the
buttons in the group.</p>
<p>An <a href="qbuttongroup.html#exclusive-prop">exclusive</a>
button group switches off all checkable (toggle) buttons except the
one that was clicked. By default, a button group is exclusive. The
buttons in a button group are usually checkable <a href="qpushbutton.html">QPushButton</a>'s, <a href="qcheckbox.html">QCheckBox</a>es (normally for non-exclusive button
groups), or <a href="qradiobutton.html">QRadioButton</a>s. If you
create an exclusive button group, you should ensure that one of the
buttons in the group is initially checked; otherwise, the group
will initially be in a state where no buttons are checked.</p>
<p>A button is added to the group with <a href="qbuttongroup.html#addButton">addButton</a>(). It can be removed
from the group with <a href="qbuttongroup.html#removeButton">removeButton</a>(). If the group
is exclusive, the currently checked button is available as <a href="qbuttongroup.html#checkedButton">checkedButton</a>(). If a button
is clicked the <a href="qbuttongroup.html#buttonClicked">buttonClicked</a>() signal is
emitted. For a checkable button in an exclusive group this means
that the button was checked. The list of buttons in the group is
returned by <a href="qbuttongroup.html#buttons">buttons</a>().</p>
<p>In addition, QButtonGroup can map between integers and buttons.
You can assign an integer id to a button with <a href="qbuttongroup.html#setId">setId</a>(), and retrieve it with
<a href="qbuttongroup.html#id">id</a>(). The id of the currently
checked button is available with <a href="qbuttongroup.html#checkedId">checkedId</a>(), and there is an
overloaded signal <a href="qbuttongroup.html#buttonClicked">buttonClicked</a>() which emits
the id of the button. The id <tt>-1</tt> is reserved by
QButtonGroup to mean "no such button". The purpose of the mapping
mechanism is to simplify the representation of enum values in a
user interface.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QButtonGroup" />QButtonGroup.__init__ (<i>self</i>, <a href="qobject.html">QObject</a> <i>parent</i> = None)</h3><p>The <i>parent</i> argument, if not None, causes <i>self</i> to be owned by Qt instead of PyQt.</p><p>Constructs a new, empty button group with the given
<i>parent</i>.</p>
<p><b>See also</b> <a href="qbuttongroup.html#addButton">addButton</a>() and <a href="qbuttongroup.html#exclusive-prop">setExclusive</a>().</p>
<h3 class="fn"><a name="addButton" />QButtonGroup.addButton (<i>self</i>, <a href="qabstractbutton.html">QAbstractButton</a>)</h3><p>Adds the given <i>button</i> to the end of the group's internal
list of buttons. An id will be assigned to the button by this
<a href="qbuttongroup.html">QButtonGroup</a>. Automatically
assigned ids are guaranteed to be negative, starting with -2. If
you are also assigning your own ids, use positive values to avoid
conflicts.</p>
<p><b>See also</b> <a href="qbuttongroup.html#removeButton">removeButton</a>() and <a href="qbuttongroup.html#buttons">buttons</a>().</p>
<h3 class="fn"><a name="addButton-2" />QButtonGroup.addButton (<i>self</i>, <a href="qabstractbutton.html">QAbstractButton</a>, int <i>id</i>)</h3><p>Adds the given <i>button</i> to the button group, with the given
<i>id</i>. It is recommended to assign only positive ids.</p>
<p><b>See also</b> <a href="qbuttongroup.html#removeButton">removeButton</a>() and <a href="qbuttongroup.html#buttons">buttons</a>().</p>
<h3 class="fn"><a name="button" /><a href="qabstractbutton.html">QAbstractButton</a> QButtonGroup.button (<i>self</i>, int <i>id</i>)</h3><p>Returns the button with the specified <i>id</i>, or 0 if no such
button exists.</p>
<p>This function was introduced in Qt 4.1.</p>
<h3 class="fn"><a name="buttons" />unknown-type QButtonGroup.buttons (<i>self</i>)</h3><p>Returns the list of this groups's buttons. This may be
empty.</p>
<p><b>See also</b> <a href="qbuttongroup.html#addButton">addButton</a>() and <a href="qbuttongroup.html#removeButton">removeButton</a>().</p>
<h3 class="fn"><a name="checkedButton" /><a href="qabstractbutton.html">QAbstractButton</a> QButtonGroup.checkedButton (<i>self</i>)</h3><p>Returns the button group's checked button, or 0 if no buttons
are checked.</p>
<p><b>See also</b> <a href="qbuttongroup.html#buttonClicked">buttonClicked</a>().</p>
<h3 class="fn"><a name="checkedId" />int QButtonGroup.checkedId (<i>self</i>)</h3><p>Returns the id of the <a href="qbuttongroup.html#checkedButton">checkedButton</a>(), or -1 if no
button is checked.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also</b> <a href="qbuttongroup.html#setId">setId</a>().</p>
<h3 class="fn"><a name="exclusive" />bool QButtonGroup.exclusive (<i>self</i>)</h3><h3 class="fn"><a name="id" />int QButtonGroup.id (<i>self</i>, <a href="qabstractbutton.html">QAbstractButton</a> <i>button</i>)</h3><p>Returns the id for the specified <i>button</i>, or -1 if no such
button exists.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also</b> <a href="qbuttongroup.html#setId">setId</a>().</p>
<h3 class="fn"><a name="removeButton" />QButtonGroup.removeButton (<i>self</i>, <a href="qabstractbutton.html">QAbstractButton</a>)</h3><p>Removes the given <i>button</i> from the button group.</p>
<p><b>See also</b> <a href="qbuttongroup.html#addButton">addButton</a>() and <a href="qbuttongroup.html#buttons">buttons</a>().</p>
<h3 class="fn"><a name="setExclusive" />QButtonGroup.setExclusive (<i>self</i>, bool)</h3><h3 class="fn"><a name="setId" />QButtonGroup.setId (<i>self</i>, <a href="qabstractbutton.html">QAbstractButton</a> <i>button</i>, int <i>id</i>)</h3><p>Sets the <i>id</i> for the specified <i>button</i>. Note that
<i>id</i> can not be -1.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also</b> <a href="qbuttongroup.html#id">id</a>().</p>
<hr /><h2>Qt Signal Documentation</h2><h3 class="fn"><a name="buttonClicked" />void buttonClicked ( ::QAbstractButton*)</h3><p>This is the default overload of this signal.</p><p>This signal is emitted when the given <i>button</i> is clicked.
A button is clicked when it is first pressed and then released,
when its shortcut key is typed, or programmatically when <a href="qabstractbutton.html#click">QAbstractButton.click</a>() or
<a href="qabstractbutton.html#animateClick">QAbstractButton.animateClick</a>()
is called.</p>
<p><b>See also</b> <a href="qbuttongroup.html#checkedButton">checkedButton</a>() and <a href="qabstractbutton.html#clicked">QAbstractButton.clicked</a>().</p>
<h3 class="fn"><a name="buttonClicked-2" />void buttonClicked (int)</h3><p>This signal is emitted when a button with the given <i>id</i> is
clicked.</p>
<p><b>See also</b> <a href="qbuttongroup.html#checkedButton">checkedButton</a>() and <a href="qabstractbutton.html#clicked">QAbstractButton.clicked</a>().</p>
<h3 class="fn"><a name="buttonPressed" />void buttonPressed ( ::QAbstractButton*)</h3><p>This is the default overload of this signal.</p><p>This signal is emitted when the given <i>button</i> is pressed
down.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also</b> <a href="qabstractbutton.html#pressed">QAbstractButton.pressed</a>().</p>
<h3 class="fn"><a name="buttonPressed-2" />void buttonPressed (int)</h3><p>This signal is emitted when a button with the given <i>id</i> is
pressed down.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also</b> <a href="qabstractbutton.html#pressed">QAbstractButton.pressed</a>().</p>
<h3 class="fn"><a name="buttonReleased" />void buttonReleased ( ::QAbstractButton*)</h3><p>This is the default overload of this signal.</p><p>This signal is emitted when the given <i>button</i> is
released.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also</b> <a href="qabstractbutton.html#released">QAbstractButton.released</a>().</p>
<h3 class="fn"><a name="buttonReleased-2" />void buttonReleased (int)</h3><p>This signal is emitted when a button with the given <i>id</i> is
released.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also</b> <a href="qabstractbutton.html#released">QAbstractButton.released</a>().</p>
<address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td align="left" width="25%">PyQt 4.12.1 for X11</td><td align="center" width="50%">Copyright © <a href="http://www.riverbankcomputing.com">Riverbank Computing Ltd</a> and <a href="http://www.qt.io">The Qt Company</a> 2015</td><td align="right" width="25%">Qt 4.8.7</td></tr></table></div></address></body></html>
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