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<?xml version="1.0" encoding="ISO-8859-1"?>
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><head><title>glutSpaceballButtonFunc</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GLUT.xml" title="GLUT"/><link rel="previous" href="glutSolidTorus.3GLUT.xml" title="glutSolidTorus"/><link rel="next" href="glutSpaceballMotionFunc.3GLUT.xml" title="glutSpaceballMotionFunc"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glutSpaceballButtonFunc</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glutSolidTorus.3GLUT.xml">Prev</a></td><th width="60%" align="center">GLUT</th><td width="20%" align="right"><a accesskey="n" href="glutSpaceballMotionFunc.3GLUT.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glutSpaceballButtonFunc.3GLUT"/><div class="titlepage"/><div class="refnamediv"><a name="glutSpaceballButtonFunc.3GLUT-name"/><h2>Name</h2><p>glutSpaceballButtonFunc — sets the Spaceball button callback for the current window.</p></div><div class="refsynopsisdiv"><a name="glutSpaceballButtonFunc.3GLUT-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void<tt>glutSpaceballButtonFunc</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>void(*<i><tt>func</tt></i>)(intbutton,intstate));</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glutSpaceballButtonFunc.3GLUT-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glutSpaceballButtonFunc</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>func</tt></i>) →<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glutSpaceballButtonFunc.3GLUT-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>func</tt></i></span></dt><dd>
The new spaceball button callback function.
</dd></dl></div></div><div class="refsect1" lang="en"><a name="glutSpaceballButtonFunc.3GLUT-description"/><h2>Description</h2><p>
<tt>glutSpaceballButtonFunc</tt> sets the Spaceball button callback for the current window. The Spaceball
button callback for a window is called when the window has Spaceball input focus (normally, when the mouse is in the
window) and the user generates Spaceball button presses. The <i><tt>button</tt></i> parameter will be the button
number (starting at one). The number of available Spaceball buttons can be determined with <tt>glutDeviceGet(GLUT_NUM_SPACEBALL_BUTTONS)</tt>. The state is either
<tt>GLUT_UP</tt> or <tt>GLUT_DOWN</tt> indicating whether the callback was due to a release or
press respectively.
</p><p>
Registering a Spaceball button callback when a Spaceball device is not available is ineffectual and not an error. In
this case, no Spaceball button callbacks will be generated.
</p><p>
Passing <tt>NULL</tt> to <tt>glutSpaceballButtonFunc</tt> disables the generation of Spaceball
button callbacks. When a new window is created, no Spaceball button callback is initially registered.
</p></div><div class="refsect1" lang="en"><a name="glutSpaceballButtonFunc.3GLUT-see_also"/><h2>See Also</h2><p>
<span class="simplelist"><a href="glutSpaceballMotionFunc.3GLUT.xml">glutSpaceballMotionFunc</a>, <a href="glutSpaceballRotateFunc.3GLUT.xml">glutSpaceballRotateFunc</a>, <a href="glutMouseFunc.3GLUT.xml">glutMouseFunc</a>, <a href="glutButtonBoxFunc.3GLUT.xml">glutButtonBoxFunc</a>, <a href="glutTabletButtonFunc.3GLUT.xml">glutTabletButtonFunc</a>, <a href="glutJoystickFunc.3GLUT.xml">glutJoystickFunc</a>, <a href="glutDeviceGet.3GLUT.xml">glutDeviceGet</a></span>
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glutSolidTorus.3GLUT.xml">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="reference-GLUT.xml">Up</a></td><td width="40%" align="right"><a accesskey="n" href="glutSpaceballMotionFunc.3GLUT.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glutSolidTorus</td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top">glutSpaceballMotionFunc</td></tr></table></div></body></html>
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