
<refentry id="glIsList">
    <refmeta>
        <refmetainfo>
            <copyright>
                <year>1991-2006</year>
                <holder>Silicon Graphics, Inc.</holder>
            </copyright>
        </refmetainfo>
        <refentrytitle>glIsList</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glIsList</refname>
        <refpurpose>determine if a name corresponds to a display list</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>GLboolean <function>glIsList</function></funcdef>
                <paramdef>GLuint <parameter>list</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 id="parameters"><title>Parameters</title>
        <variablelist>
        <varlistentry>
            <term><parameter>list</parameter></term>
            <listitem>
                <para>
                    Specifies a potential display list name.
                </para>
            </listitem>
        </varlistentry>
        </variablelist>
    </refsect1>
    <refsect1 id="description"><title>Description</title>
        <para>
            <function>glIsList</function> returns <constant>GL_TRUE</constant> if <parameter>list</parameter> is the name
            of a display list and returns <constant>GL_FALSE</constant> if it is not, or if an error occurs.
        </para>
        <para>
            A name returned by <citerefentry><refentrytitle>glGenLists</refentrytitle></citerefentry>, but not yet associated with a display list
            by calling <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>, is not the name of a display list.
        </para>
    </refsect1>
    <refsect1 id="errors"><title>Errors</title>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <function>glIsList</function>
            is executed between the execution of
            <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
            and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
        </para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glDeleteLists</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glGenLists</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>
        </para>
    </refsect1>
    <refsect1 id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"></trademark> 1991-2006
            Silicon Graphics, Inc. This document is licensed under the SGI
            Free Software B License. For details, see
            <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
        </para>
    </refsect1>
</refentry>
