</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>rectangles</code></em>&#160;:</span></p></td><td> return location for an array of rectangles</td></tr><tr><td><p><span class="term"><em class="parameter"><code>n_rectangles</code></em>&#160;:</span></p></td><td> length of returned array</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081166"></a><h3><a name="gdk-region-empty"></a>gdk_region_empty ()</h3><a class="indexterm" name="id3081178"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a>            gdk_region_empty                    (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region);</pre><p>Finds out if the <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a> is empty.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td><td> <ahref="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>region</code></em> is empty.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081270"></a><h3><a name="gdk-region-equal"></a>gdk_region_equal ()</h3><a class="indexterm" name="id3081283"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a>            gdk_region_equal                    (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region1,                                                         <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region2);</pre><p>Finds out if the two regions are the same.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region1</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>region2</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td><td> <ahref="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>region1</code></em> and <em class="parameter"><code>region2</code></em> are equal.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081403"></a><h3><a name="gdk-region-point-in"></a>gdk_region_point_in ()</h3><a class="indexterm" name="id3081416"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a>            gdk_region_point_in                 (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region,                                                         int x,                                                         int y);</pre><p>Finds out if a point is in a region.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>x</code></em>&#160;:</span></p></td><td> the x coordinate of a point</td></tr><tr><td><p><span class="term"><em class="parameter"><code>y</code></em>&#160;:</span></p></td><td> the y coordinate of a point</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td><td> <ahref="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the point is in <em class="parameter"><code>region</code></em>.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081542"></a><h3><a name="gdk-region-rect-in"></a>gdk_region_rect_in ()</h3><a class="indexterm" name="id3081555"></a><pre class="programlisting"><a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkOverlapType">GdkOverlapType</a>      gdk_region_rect_in                  (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region,                                                         <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRectangle">GdkRectangle</a> *rectangle);</pre><p>Tests whether a rectangle is within a region.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a>.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>rectangle</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRectangle"><span class="type">GdkRectangle</span></a>.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td><td> <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GDK-OVERLAP-RECTANGLE-IN:CAPS"><code class="literal">GDK_OVERLAP_RECTANGLE_IN</code></a>, <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GDK-OVERLAP-RECTANGLE-OUT:CAPS"><code class="literal">GDK_OVERLAP_RECTANGLE_OUT</code></a>, or  <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GDK-OVERLAP-RECTANGLE-PART:CAPS"><code class="literal">GDK_OVERLAP_RECTANGLE_PART</code></a>, depending on whether the rectangle is inside,  outside, or partly inside the <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a>, respectively.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081701"></a><h3><a name="GdkOverlapType"></a>enum GdkOverlapType</h3><a class="indexterm" name="id3081714"></a><pre class="programlisting">typedef enum{  GDK_OVERLAP_RECTANGLE_IN,  GDK_OVERLAP_RECTANGLE_OUT,  GDK_OVERLAP_RECTANGLE_PART} GdkOverlapType;</pre><p>Specifies the possible values returned by <a class="link" href="gdk-Points-Rectangles-and-Regions.html#gdk-region-rect-in"><code class="function">gdk_region_rect_in()</code></a>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><a name="GDK-OVERLAP-RECTANGLE-IN:CAPS"></a><code class="literal">GDK_OVERLAP_RECTANGLE_IN</code></span></p></td><td>if the rectangle is inside the <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a>.</td></tr><tr><td><p><span class="term"><a name="GDK-OVERLAP-RECTANGLE-OUT:CAPS"></a><code class="literal">GDK_OVERLAP_RECTANGLE_OUT</code></span></p></td><td>if the rectangle is outside the <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a>.</td></tr><tr><td><p><span class="term"><a name="GDK-OVERLAP-RECTANGLE-PART:CAPS"></a><code class="literal">GDK_OVERLAP_RECTANGLE_PART</code></span></p></td><td>if the rectangle is partly inside the <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a>.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081838"></a><h3><a name="gdk-region-offset"></a>gdk_region_offset ()</h3><a class="indexterm" name="id3081851"></a><pre class="programlisting">void                gdk_region_offset                   (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region,                                                         <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> dx,                                                         <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> dy);</pre><p>Moves a region the specified distance.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>dx</code></em>&#160;:</span></p></td><td> the distance to move the region horizontally</td></tr><tr><td><p><span class="term"><em class="parameter"><code>dy</code></em>&#160;:</span></p></td><td> the distance to move the region vertically</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3081953"></a><h3><a name="gdk-region-shrink"></a>gdk_region_shrink ()</h3><a class="indexterm" name="id3081967"></a><pre class="programlisting">void                gdk_region_shrink                   (<a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion">GdkRegion</a> *region,                                                         <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> dx,                                                         <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> dy);</pre><p>Resizes a region by the specified amount.Positive values shrink the region. Negative values expand it.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>region</code></em>&#160;:</span></p></td><td> a <a class="link" href="gdk-Points-Rectangles-and-Regions.html#GdkRegion"><span class="type">GdkRegion</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>dx</code></em>&#160;:</span></p></td><td> the number of pixels to shrink the region horizontally</td></tr><tr><td><p><span class="term"><em class="parameter"><code>dy</code></em>&#160;:</span></p></td><td> the number of pixels to shrink the region vertically</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3082070"></a><h3>