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<div class="refsect2">
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<a name="GdkPixbufAlphaMode"></a><h3>enum GdkPixbufAlphaMode</h3>
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<p>These values can be passed to
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<a href="../gdk2/gdk2-Pixbufs.html#gdk-pixbuf-render-to-drawable-alpha"><code class="function">gdk_pixbuf_render_to_drawable_alpha()</code></a> to control how the alpha
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<a href="http://library.gnome.org/devel/gdk3/gdk2-Pixbufs.html#gdk-pixbuf-render-to-drawable-alpha"><code class="function">gdk_pixbuf_render_to_drawable_alpha()</code></a> to control how the alpha
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channel of an image should be handled. This function can create a
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bilevel clipping mask (black and white) and use it while painting
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the image. In the future, when the X Window System gets an alpha