437 lines
22 KiB
HTML
437 lines
22 KiB
HTML
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<a href="#libgimp-gimpchannel.synopsis" class="shortcut">Top</a>
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<a href="#libgimp-gimpchannel.description" class="shortcut">Description</a>
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</table>
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<div class="refentry">
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<a name="libgimp-gimpchannel"></a><div class="titlepage"></div>
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<div class="refnamediv"><table width="100%"><tr>
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<td valign="top">
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<h2><span class="refentrytitle"><a name="libgimp-gimpchannel.top_of_page"></a>gimpchannel</span></h2>
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<p>gimpchannel — Functions for manipulating channels.</p>
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</td>
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<td valign="top" align="right"></td>
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</tr></table></div>
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<div class="refsynopsisdiv">
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<a name="libgimp-gimpchannel.synopsis"></a><h2>Synopsis</h2>
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<pre class="synopsis"><span class="returnvalue">gint32</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-new" title="gimp_channel_new ()">gimp_channel_new</a> (<em class="parameter"><code><span class="type">gint32</span> image_ID</code></em>,
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<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
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<em class="parameter"><code><span class="type">guint</span> width</code></em>,
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<em class="parameter"><code><span class="type">guint</span> height</code></em>,
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<em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>,
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<em class="parameter"><code>const <a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);
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<span class="returnvalue">gint32</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-new-from-component" title="gimp_channel_new_from_component ()">gimp_channel_new_from_component</a> (<em class="parameter"><code><span class="type">gint32</span> image_ID</code></em>,
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<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpbase/libgimpbase-gimpbaseenums.html#GimpChannelType"><span class="type">GimpChannelType</span></a> component</code></em>,
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<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);
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<span class="returnvalue">gint32</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-copy" title="gimp_channel_copy ()">gimp_channel_copy</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-get-show-masked" title="gimp_channel_get_show_masked ()">gimp_channel_get_show_masked</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-set-show-masked" title="gimp_channel_set_show_masked ()">gimp_channel_set_show_masked</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><span class="type">gboolean</span> show_masked</code></em>);
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<span class="returnvalue">gdouble</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-get-opacity" title="gimp_channel_get_opacity ()">gimp_channel_get_opacity</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-set-opacity" title="gimp_channel_set_opacity ()">gimp_channel_set_opacity</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-get-color" title="gimp_channel_get_color ()">gimp_channel_get_color</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-set-color" title="gimp_channel_set_color ()">gimp_channel_set_color</a> (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code>const <a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);
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<span class="returnvalue">gboolean</span> <a class="link" href="libgimp-gimpchannel.html#gimp-channel-combine-masks" title="gimp_channel_combine_masks ()">gimp_channel_combine_masks</a> (<em class="parameter"><code><span class="type">gint32</span> channel1_ID</code></em>,
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<em class="parameter"><code><span class="type">gint32</span> channel2_ID</code></em>,
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<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpbase/libgimpbase-gimpbaseenums.html#GimpChannelOps"><span class="type">GimpChannelOps</span></a> operation</code></em>,
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<em class="parameter"><code><span class="type">gint</span> offx</code></em>,
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<em class="parameter"><code><span class="type">gint</span> offy</code></em>);
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</pre>
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</div>
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<div class="refsect1">
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<a name="libgimp-gimpchannel.description"></a><h2>Description</h2>
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<p>
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Functions for manipulating channels.
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</p>
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</div>
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<div class="refsect1">
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<a name="libgimp-gimpchannel.details"></a><h2>Details</h2>
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<div class="refsect2">
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<a name="gimp-channel-new"></a><h3>gimp_channel_new ()</h3>
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<pre class="programlisting"><span class="returnvalue">gint32</span> gimp_channel_new (<em class="parameter"><code><span class="type">gint32</span> image_ID</code></em>,
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<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
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<em class="parameter"><code><span class="type">guint</span> width</code></em>,
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<em class="parameter"><code><span class="type">guint</span> height</code></em>,
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<em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>,
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<em class="parameter"><code>const <a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);</pre>
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<p>
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Create a new channel.
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</p>
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<p>
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This procedure creates a new channel with the specified width and
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height. Name, opacity, and color are also supplied parameters. The
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new channel still needs to be added to the image, as this is not
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automatic. Add the new channel with the <a class="link" href="libgimp-gimpimage.html#gimp-image-insert-channel" title="gimp_image_insert_channel ()"><code class="function">gimp_image_insert_channel()</code></a>
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command. Other attributes such as channel show masked, should be
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set with explicit procedure calls. The channel's contents are
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undefined initially.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>image_ID</code></em> :</span></p></td>
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<td>The image to which to add the channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
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<td>The channel name.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
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<td>The channel width.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
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<td>The channel height.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>opacity</code></em> :</span></p></td>
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<td>The channel opacity.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
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<td>The channel compositing color.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>The newly created channel.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-new-from-component"></a><h3>gimp_channel_new_from_component ()</h3>
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<pre class="programlisting"><span class="returnvalue">gint32</span> gimp_channel_new_from_component (<em class="parameter"><code><span class="type">gint32</span> image_ID</code></em>,
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<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpbase/libgimpbase-gimpbaseenums.html#GimpChannelType"><span class="type">GimpChannelType</span></a> component</code></em>,
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<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
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<p>
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Create a new channel from a color component
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</p>
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<p>
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This procedure creates a new channel from a color component.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>image_ID</code></em> :</span></p></td>
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<td>The image to which to add the channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>component</code></em> :</span></p></td>
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<td>The image component.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
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<td>The channel name.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>The newly created channel.</td>
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</tr>
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</tbody>
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</table></div>
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<p class="since">Since GIMP 2.4</p>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-copy"></a><h3>gimp_channel_copy ()</h3>
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<pre class="programlisting"><span class="returnvalue">gint32</span> gimp_channel_copy (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);</pre>
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<p>
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Copy a channel.
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</p>
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<p>
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This procedure copies the specified channel and returns the copy.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel to copy.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>The newly copied channel.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-get-show-masked"></a><h3>gimp_channel_get_show_masked ()</h3>
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<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_get_show_masked (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);</pre>
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<p>
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Get the composite method of the specified channel.
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</p>
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<p>
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This procedure returns the specified channel's composite method. If
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it is TRUE, then the channel is composited with the image so that
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masked regions are shown. Otherwise, selected regions are shown.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>The channel composite method.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-set-show-masked"></a><h3>gimp_channel_set_show_masked ()</h3>
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<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_set_show_masked (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><span class="type">gboolean</span> show_masked</code></em>);</pre>
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<p>
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Set the composite method of the specified channel.
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</p>
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<p>
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This procedure sets the specified channel's composite method. If it
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is TRUE, then the channel is composited with the image so that
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masked regions are shown. Otherwise, selected regions are shown.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>show_masked</code></em> :</span></p></td>
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<td>The new channel composite method.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>TRUE on success.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-get-opacity"></a><h3>gimp_channel_get_opacity ()</h3>
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<pre class="programlisting"><span class="returnvalue">gdouble</span> gimp_channel_get_opacity (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>);</pre>
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<p>
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Get the opacity of the specified channel.
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</p>
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<p>
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This procedure returns the specified channel's opacity.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>The channel opacity.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-set-opacity"></a><h3>gimp_channel_set_opacity ()</h3>
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<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_set_opacity (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>);</pre>
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<p>
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Set the opacity of the specified channel.
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</p>
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<p>
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This procedure sets the specified channel's opacity.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel.</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>opacity</code></em> :</span></p></td>
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<td>The new channel opacity.</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>TRUE on success.</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="gimp-channel-get-color"></a><h3>gimp_channel_get_color ()</h3>
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<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_get_color (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
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<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);</pre>
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<p>
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Get the compositing color of the specified channel.
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</p>
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<p>
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This procedure returns the specified channel's compositing color.
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</p>
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<div class="variablelist"><table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top">
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<col>
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</colgroup>
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
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<td>The channel.</td>
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</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
|
||
<td>The channel compositing color.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
|
||
<td>TRUE on success.</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-channel-set-color"></a><h3>gimp_channel_set_color ()</h3>
|
||
<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_set_color (<em class="parameter"><code><span class="type">gint32</span> channel_ID</code></em>,
|
||
<em class="parameter"><code>const <a href="/local/head/share/gtk-doc/html/libgimpcolor/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);</pre>
|
||
<p>
|
||
Set the compositing color of the specified channel.
|
||
</p>
|
||
<p>
|
||
This procedure sets the specified channel's compositing color.
|
||
</p>
|
||
<div class="variablelist"><table border="0" class="variablelist">
|
||
<colgroup>
|
||
<col align="left" valign="top">
|
||
<col>
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>channel_ID</code></em> :</span></p></td>
|
||
<td>The channel.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
|
||
<td>The new channel compositing color.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
|
||
<td>TRUE on success.</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
<hr>
|
||
<div class="refsect2">
|
||
<a name="gimp-channel-combine-masks"></a><h3>gimp_channel_combine_masks ()</h3>
|
||
<pre class="programlisting"><span class="returnvalue">gboolean</span> gimp_channel_combine_masks (<em class="parameter"><code><span class="type">gint32</span> channel1_ID</code></em>,
|
||
<em class="parameter"><code><span class="type">gint32</span> channel2_ID</code></em>,
|
||
<em class="parameter"><code><a href="/local/head/share/gtk-doc/html/libgimpbase/libgimpbase-gimpbaseenums.html#GimpChannelOps"><span class="type">GimpChannelOps</span></a> operation</code></em>,
|
||
<em class="parameter"><code><span class="type">gint</span> offx</code></em>,
|
||
<em class="parameter"><code><span class="type">gint</span> offy</code></em>);</pre>
|
||
<p>
|
||
Combine two channel masks.
|
||
</p>
|
||
<p>
|
||
This procedure combines two channel masks. The result is stored in
|
||
the first channel.
|
||
</p>
|
||
<div class="variablelist"><table border="0" class="variablelist">
|
||
<colgroup>
|
||
<col align="left" valign="top">
|
||
<col>
|
||
</colgroup>
|
||
<tbody>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>channel1_ID</code></em> :</span></p></td>
|
||
<td>The channel1.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>channel2_ID</code></em> :</span></p></td>
|
||
<td>The channel2.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
|
||
<td>The selection operation.</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>offx</code></em> :</span></p></td>
|
||
<td>x offset between upper left corner of channels: (second - first).</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>offy</code></em> :</span></p></td>
|
||
<td>y offset between upper left corner of channels: (second - first).</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
|
||
<td>TRUE on success.</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="footer">
|
||
<hr>
|
||
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|
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