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  • Committer: Bazaar Package Importer
  • Author(s): Sebastian Dröge
  • Date: 2010-06-11 12:19:30 UTC
  • mfrom: (1.11.6 upstream)
  • mto: This revision was merged to the branch mainline in revision 175.
  • Revision ID: james.westby@ubuntu.com-20100611121930-n4pklvkoqdsg12vm
Tags: 2.21.2-1
* New upstream development release:
  + debian/rules,
    debian/libgtk2.0-0.symbols:
    - Update for new API symbols.
  + debian/patches/070_mandatory-relibtoolize.patch:
    - Regenerated for the new version.
  + debian/control.in:
    - Update GLib (build-) dependency to >= 2.25.8.

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docs/reference/gtk/html/chap-drawing-model.html
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<div class="refsect2" title="Window and no-window widgets">
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<a name="window-no-window-widgets"></a><h3>Window and no-window widgets</h3>
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<p>
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        A <a href="/usr/share/gtk-doc/html/gdk/gdk-Windows.html#GdkWindow"><code class="classname">GdkWindow</code></a>
 
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        A <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Windows.html#GdkWindow"><code class="classname">GdkWindow</code></a>
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        represents a window from the underlying windowing system on which GTK+
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        is running.  For example, on X11 it corresponds to a
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        <span class="type">Window</span>; on Win32, it corresponds to a <span class="type">HANDLE</span>.
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        The windowing system generates events for these windows.  The GDK
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        interface to the windowing system translates such native events into
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        <a href="/usr/share/gtk-doc/html/gdk/gdk-Event-Structures.html#GdkEvent"><span class="structname">GdkEvent</span></a>
 
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        <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Event-Structures.html#GdkEvent"><span class="structname">GdkEvent</span></a>
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        structures and sends them on to the GTK layer.  In turn, the GTK layer
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        finds the widget that corresponds to a particular
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        <code class="classname">GdkWindow</code> and emits the corresponding event
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<div class="refsect2" title="Notes on drawing no-window widgets">
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<a name="notes-on-drawing-no-window-widgets"></a><h3>Notes on drawing no-window widgets</h3>
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<p>
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        Remember that the coordinates in a <a href="/usr/share/gtk-doc/html/gdk/gdk-Event-Structures.html#GdkEventExpose">GdkEventExpose</a> are relative to
 
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        Remember that the coordinates in a <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Event-Structures.html#GdkEventExpose">GdkEventExpose</a> are relative to
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        the <code class="classname">GdkWindow</code> that received the event,
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        <span class="emphasis"><em>not</em></span> to the widget whose expose-event
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        handler is being called.  If your widget owns the window, then
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        drawing gets clipped by any child windows that it may
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        intersect.  Sometimes you need to draw over your child windows
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        as well; for example, when drawing a drag-handle to resize
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        something.  In this case, turn on the <a href="/usr/share/gtk-doc/html/gdk/gdk-Graphics-Contexts.html#GDK-INCLUDE-INFERIORS:CAPS">GDK_INCLUDE_INFERIORS</a>
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        subwindow mode for the <a href="/usr/share/gtk-doc/html/gdk/gdk-Graphics-Contexts.html">GdkGC</a> which you use for
 
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        something.  In this case, turn on the <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Graphics-Contexts.html#GDK-INCLUDE-INFERIORS:CAPS">GDK_INCLUDE_INFERIORS</a>
 
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        subwindow mode for the <a href="http://library.gnome.org/devel/gdk/unstable/gdk-Graphics-Contexts.html">GdkGC</a> which you use for
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        drawing.
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      </p>
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</div>
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9</pre></td>
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        <td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
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<span class="function">my_widget_init</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">MyWidget </span><span class="symbol">*</span><span class="normal">widget</span><span class="symbol">)</span>
 
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<span class="function">my_widget_init</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">MyWidget</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">widget</span><span class="symbol">)</span>
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<span class="cbracket">{</span>
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<span class="normal">  </span><span class="symbol">...</span>
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<span class="normal">  </span><span class="function"><a href="GtkWidget.html#gtk-widget-set-double-buffered">gtk_widget_set_double_buffered</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">,</span><span class="normal"> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS">FALSE</a></span><span class="symbol">);</span>
 
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<span class="normal">  </span><span class="function"><a href="GtkWidget.html#gtk-widget-set-double-buffered">gtk_widget_set_double_buffered</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">,</span><span class="normal"> <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS">FALSE</a></span><span class="symbol">);</span>
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<span class="normal">  </span><span class="symbol">...</span>
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<span class="cbracket">}</span></pre></td>