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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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<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>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>);