Regions have an internal representation that is accessible as a
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list of rectangles. To turn the
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<em class="structfield"><code>GdkEventExpose.region</code></em> field into such
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a list, use <a href="http://library.gnome.org/devel/gdk3/gdk-Points-Rectangles-and-Regions.html#gdk-region-get-rectangles"><code class="function">gdk_region_get_rectangles()</code></a>:
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a list, use <a href="../gdk/gdk-Points-Rectangles-and-Regions.html#gdk-region-get-rectangles"><code class="function">gdk_region_get_rectangles()</code></a>: