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><head><title>glutMouseFunc</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="glutMotionFunc.3GLUT.xml" title="glutMotionFunc"/><link rel="next" href="glutOverlayDisplayFunc.3GLUT.xml" title="glutOverlayDisplayFunc"/></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">glutMouseFunc</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glutMotionFunc.3GLUT.xml">Prev</a> </td><th width="60%" align="center">GLUT</th><td width="20%" align="right"> <a accesskey="n" href="glutOverlayDisplayFunc.3GLUT.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glutMouseFunc.3GLUT"/><div class="titlepage"/><div class="refnamediv"><a name="glutMouseFunc.3GLUT-name"/><h2>Name</h2><p>glutMouseFunc &#8212; sets the mouse callback for the current window.</p></div><div class="refsynopsisdiv"><a name="glutMouseFunc.3GLUT-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void <tt>glutMouseFunc</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>void (*<i><tt>func</tt></i>)(int button, int state, int x, int y));</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glutMouseFunc.3GLUT-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glutMouseFunc</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>func</tt></i>) &#8594; <tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glutMouseFunc.3GLUT-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>func</tt></i></span></dt><dd>
						The new mouse callback function.
					</dd></dl></div></div><div class="refsect1" lang="en"><a name="glutMouseFunc.3GLUT-description"/><h2>Description</h2><p>
			<tt>glutMouseFunc</tt> sets the mouse callback for the current window. When a user presses and releases
			mouse buttons in the window, each press and each release generates a mouse callback. The button parameter is one of
			<tt>GLUT_LEFT_BUTTON</tt>, <tt>GLUT_MIDDLE_BUTTON</tt>, or
			<tt>GLUT_RIGHT_BUTTON</tt>. For systems with only two mouse buttons, it may not be possible to generate
			<tt>GLUT_MIDDLE_BUTTON</tt> callback. For systems with a single mouse button, it may be possible to
			generate only a <tt>GLUT_LEFT_BUTTON</tt> callback. The state parameter is either
			<tt>GLUT_UP</tt> or <tt>GLUT_DOWN</tt> indicating whether the callback was due to a release or
			press respectively. The x and y callback parameters indicate the window relative coordinates when the mouse button
			state changed. If a <tt>GLUT_DOWN</tt> callback for a specific button is triggered, the program can assume
			a <tt>GLUT_UP</tt> callback for the same button will be generated (assuming the window still has a mouse
			callback registered) when the mouse button is released even if the mouse has moved outside the window.
		</p><p>
			If a menu is attached to a button for a window, mouse callbacks will not be generated for that button.
		</p><p>
			During a mouse callback, <a href="glutGetModifiers.3GLUT.xml"><tt>glutGetModifiers</tt></a> may be called to determine the state
			of modifier keys when the mouse event generating the callback occurred.
		</p><p>
			Passing <tt>NULL</tt> to <tt>glutMouseFunc</tt> disables the generation of mouse callbacks.
		</p></div><div class="refsect1" lang="en"><a name="glutMouseFunc.3GLUT-see_also"/><h2>See Also</h2><p>
			<span class="simplelist"><a href="glutKeyboardFunc.3GLUT.xml">glutKeyboardFunc</a>, <a href="glutMotionFunc.3GLUT.xml">glutMotionFunc</a>, <a href="glutSpaceballButtonFunc.3GLUT.xml">glutSpaceballButtonFunc</a>, <a href="glutButtonBoxFunc.3GLUT.xml">glutButtonBoxFunc</a>, <a href="glutTabletButtonFunc.3GLUT.xml">glutTabletButtonFunc</a>, <a href="glutGetModifiers.3GLUT.xml">glutGetModifiers</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="glutMotionFunc.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="glutOverlayDisplayFunc.3GLUT.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glutMotionFunc </td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top"> glutOverlayDisplayFunc</td></tr></table></div></body></html>
