gclosure.sgml

GLib是GTK+和GNOME工程的基础底层核心程序库

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<title><anchor id="g-closure-invalidate">g_closure_invalidate ()</title>
<programlisting>void        g_closure_invalidate            (<link linkend="GClosure">GClosure</link> *closure);</programlisting>
<para>
This function sets a flag on the closure to indicate that it's
calling environment has become invalid, and thus causes any future
invocations of <link linkend="g-closure-invoke">g_closure_invoke</link>() on this <parameter>closure</parameter> to be ignored.
Also, invalidation notifiers installed on the closure will be called
at this point, and since invalidation notifiers may unreference
the closure, <parameter>closure</parameter> should be considered an invalidated pointer
atfer this function, unles <link linkend="g-closure-ref">g_closure_ref</link>() was called beforehand.
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>GClosure to invalidate


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<refsect2>
<title><anchor id="g-closure-add-finalize-notifier">g_closure_add_finalize_notifier ()</title>
<programlisting>void        g_closure_add_finalize_notifier (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> notify_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> notify_func);</programlisting>
<para>

</para><informaltable pgwide="1" frame="none" role="params">
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_func</parameter>&nbsp;:</entry>
<entry>


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<refsect2>
<title><anchor id="g-closure-add-invalidate-notifier">g_closure_add_invalidate_notifier ()</title>
<programlisting>void        g_closure_add_invalidate_notifier
                                            (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> notify_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> notify_func);</programlisting>
<para>

</para><informaltable pgwide="1" frame="none" role="params">
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<colspec colwidth="2*">
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_func</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<refsect2>
<title><anchor id="g-closure-remove-finalize-notifier">g_closure_remove_finalize_notifier ()</title>
<programlisting>void        g_closure_remove_finalize_notifier
                                            (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> notify_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> notify_func);</programlisting>
<para>

</para><informaltable pgwide="1" frame="none" role="params">
<tgroup cols="2">
<colspec colwidth="2*">
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_func</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<refsect2>
<title><anchor id="g-closure-remove-invalidate-notifier">g_closure_remove_invalidate_notifier ()</title>
<programlisting>void        g_closure_remove_invalidate_notifier
                                            (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> notify_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> notify_func);</programlisting>
<para>

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<colspec colwidth="2*">
<colspec colwidth="8*">
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>notify_func</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<refsect2>
<title><anchor id="g-closure-new-simple">g_closure_new_simple ()</title>
<programlisting><link linkend="GClosure">GClosure</link>*   g_closure_new_simple            (<link linkend="guint">guint</link> sizeof_closure,
                                             <link linkend="gpointer">gpointer</link> data);</programlisting>
<para>

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<row><entry align="right"><parameter>sizeof_closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><emphasis>Returns</emphasis> :</entry><entry>


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<refsect2>
<title><anchor id="g-closure-set-marshal">g_closure_set_marshal ()</title>
<programlisting>void        g_closure_set_marshal           (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="GClosureMarshal">GClosureMarshal</link> marshal);</programlisting>
<para>

</para><informaltable pgwide="1" frame="none" role="params">
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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>marshal</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<refsect2>
<title><anchor id="g-closure-add-marshal-guards">g_closure_add_marshal_guards ()</title>
<programlisting>void        g_closure_add_marshal_guards    (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> pre_marshal_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> pre_marshal_notify,
                                             <link linkend="gpointer">gpointer</link> post_marshal_data,
                                             <link linkend="GClosureNotify">GClosureNotify</link> post_marshal_notify);</programlisting>
<para>

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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>pre_marshal_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>pre_marshal_notify</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>post_marshal_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>post_marshal_notify</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<title><anchor id="g-closure-set-meta-marshal">g_closure_set_meta_marshal ()</title>
<programlisting>void        g_closure_set_meta_marshal      (<link linkend="GClosure">GClosure</link> *closure,
                                             <link linkend="gpointer">gpointer</link> marshal_data,
                                             <link linkend="GClosureMarshal">GClosureMarshal</link> meta_marshal);</programlisting>
<para>

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<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>marshal_data</parameter>&nbsp;:</entry>
<entry>
</entry></row>
<row><entry align="right"><parameter>meta_marshal</parameter>&nbsp;:</entry>
<entry>


</entry></row>
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<refsect2>
<title><anchor id="g-source-set-closure">g_source_set_closure ()</title>
<programlisting>void        g_source_set_closure            (<link linkend="GSource">GSource</link> *source,
                                             <link linkend="GClosure">GClosure</link> *closure);</programlisting>
<para>
Set the callback for a source as a <link linkend="GClosure">GClosure</link>.
</para>
<para>
If the source is not one of the standard GLib types, the <parameter>closure_callback</parameter>
and <parameter>closure_marshal</parameter> fields of the GSourceFuncs structure must have been
filled in with pointers to appropriate functions.</para>
<para>

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<row><entry align="right"><parameter>source</parameter>&nbsp;:</entry>
<entry> the source
</entry></row>
<row><entry align="right"><parameter>closure</parameter>&nbsp;:</entry>
<entry> a <link linkend="GClosure">GClosure</link>
</entry></row>
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<refsect2>
<title><anchor id="G-TYPE-IO-CHANNEL-CAPS">G_TYPE_IO_CHANNEL</title>
<programlisting>#define G_TYPE_IO_CHANNEL (g_io_channel_get_type ())
</programlisting>
<para>

</para></refsect2>
<refsect2>
<title><anchor id="G-TYPE-IO-CONDITION-CAPS">G_TYPE_IO_CONDITION</title>
<programlisting>#define G_TYPE_IO_CONDITION (g_io_condition_get_type ())
</programlisting>
<para>

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