gdkscreen.html

最新gtk中文资料集

href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"
>GValue</a> *value);</pre>
<p>
Retrieves a desktop-wide setting such as double-click time
for the <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a> <em class="parameter"><code>screen</code></em>. 
</p>
<p>
FIXME needs a list of valid settings here, or a link to 
more information.</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>screen</code></em>&#160;:</span></p></td>
<td> the <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a> where the setting is located
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em>&#160;:</span></p></td>
<td> the name of the setting
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em>&#160;:</span></p></td>
<td> location to store the value of the setting
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if the setting existed and a value was stored
  in <em class="parameter"><code>value</code></em>, <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"
><code class="literal">FALSE</code></a> otherwise.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070243"></a><h3>
<a name="gdk-screen-get-font-options"></a>gdk_screen_get_font_options ()</h3>
<a class="indexterm" name="id3070259"></a><pre class="programlisting">const <a
href="/usr/share/gtk-doc/html/cairo/cairo-Font-Options.html#cairo-font-options-t"
>cairo_font_options_t</a>* gdk_screen_get_font_options (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets any options previously set with <a class="link" href="GdkScreen.html#gdk-screen-set-font-options"><code class="function">gdk_screen_set_font_options()</code></a>.</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>screen</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> the current font options, or <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a> if no default
 font options have been set.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070359"></a><h3>
<a name="gdk-screen-set-font-options"></a>gdk_screen_set_font_options ()</h3>
<a class="indexterm" name="id3070374"></a><pre class="programlisting">void                gdk_screen_set_font_options         (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen,
                                                         const <a
href="/usr/share/gtk-doc/html/cairo/cairo-Font-Options.html#cairo-font-options-t"
>cairo_font_options_t</a> *options);</pre>
<p>
Sets the default font options for the screen. These
options will be set on any <a
href="/usr/share/gtk-doc/html/pango/pango-Text-Processing.html#PangoContext"
><span class="type">PangoContext</span></a>'s newly created
with <a class="link" href="gdk-Pango-Interaction.html#gdk-pango-context-get-for-screen"><code class="function">gdk_pango_context_get_for_screen()</code></a>. Changing the
default set of font options does not affect contexts that
have already been created.</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>screen</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>options</code></em>&#160;:</span></p></td>
<td> a <a
href="/usr/share/gtk-doc/html/cairo/cairo-Font-Options.html#cairo-font-options-t"
><span class="type">cairo_font_options_t</span></a>, or <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a> to unset any
  previously set default font options.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070505"></a><h3>
<a name="gdk-screen-get-resolution"></a>gdk_screen_get_resolution ()</h3>
<a class="indexterm" name="id3070520"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
>gdouble</a>             gdk_screen_get_resolution           (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the resolution for font handling on the screen; see
<a class="link" href="GdkScreen.html#gdk-screen-set-resolution"><code class="function">gdk_screen_set_resolution()</code></a> for full details.</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>screen</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> the current resolution, or -1 if no resolution
has been set.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070608"></a><h3>
<a name="gdk-screen-set-resolution"></a>gdk_screen_set_resolution ()</h3>
<a class="indexterm" name="id3070623"></a><pre class="programlisting">void                gdk_screen_set_resolution           (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"
>gdouble</a> dpi);</pre>
<p>
Sets the resolution for font handling on the screen. This is a
scale factor between points specified in a <a
href="/usr/share/gtk-doc/html/pango/pango-Fonts.html#PangoFontDescription"
><span class="type">PangoFontDescription</span></a>
and cairo units. The default value is 96, meaning that a 10 point
font will be 13 units high. (10 * 96. / 72. = 13.3).</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>screen</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>dpi</code></em>&#160;:</span></p></td>
<td> the resolution in "dots per inch". (Physical inches aren't actually
  involved; the terminology is conventional.)
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070724"></a><h3>
<a name="gdk-screen-get-active-window"></a>gdk_screen_get_active_window ()</h3>
<a class="indexterm" name="id3070739"></a><pre class="programlisting"><a class="link" href="gdk-Windows.html#GdkWindow">GdkWindow</a>*          gdk_screen_get_active_window        (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Returns the screen's currently active window.
</p>
<p>
On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
on the root window, as described in the <a class="ulink" href="http://www.freedesktop.org/Standards/wm-spec" target="_top">Extended Window
Manager Hints</a>. If there is no currently currently active
window, or the window manager does not support the
_NET_ACTIVE_WINDOW hint, this function returns <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a>.
</p>
<p>
On other platforms, this function may return <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a>, depending on whether
it is implementable on that platform.
</p>
<p>
The returned window should be unrefed using <a
href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"
><code class="function">g_object_unref()</code></a> when
no longer needed.</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>screen</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GdkScreen.html" title="GdkScreen"><span class="type">GdkScreen</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> the currently active window, or <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a>.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3070882"></a><h3>
<a name="gdk-screen-get-window-stack"></a>gdk_screen_get_window_stack ()</h3>
<a class="indexterm" name="id3070898"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"
>GList</a>*              gdk_screen_get_window_stack         (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Returns a <a
href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"
><span class="type">GList</span></a> of <a class="link" href="gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>s representing the current
window stack.
</p>
<p>
On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
property on the root window, as described in the <a class="ulink" href="http://www.freedesktop.org/Standards/wm-spec" target="_top">Extended Window
Manager Hints</a>. If the window manager does not support the
_NET_CLIENT_LIST_STACKING hint, this function returns <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a>.
</p>
<p>
On other platforms, this function may return <a
href="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"
><code class="literal">NULL</code></a>, depending on whether
it is implementable on that platform.
</p>
<p>
The returned list is newly allocated and owns references to the
windows it contains, so it should be freed using <a
href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"
><code class="function">g_list_free()</code></a> and
its windows unrefed using <a
href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"
><code class="function">g_object_unref()</code></a> when no longer needed.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr