gdkscreen.html

最新gtk中文资料集

<div class="refsect2" lang="en">
<a name="id3068146"></a><h3>
<a name="gdk-screen-is-composited"></a>gdk_screen_is_composited ()</h3>
<a class="indexterm" name="id3068162"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            gdk_screen_is_composited            (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Returns whether windows with an RGBA visual can reasonably
be expected to have their alpha channel drawn correctly on
the screen.
</p>
<p>
On X11 this function returns whether a compositing manager is
compositing <em class="parameter"><code>screen</code></em>.</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> Whether windows with RGBA visuals can reasonably be
expected to have their alpha channels drawn correctly on the screen.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068251"></a><h3>
<a name="gdk-screen-get-root-window"></a>gdk_screen_get_root_window ()</h3>
<a class="indexterm" name="id3068267"></a><pre class="programlisting"><a class="link" href="gdk-Windows.html#GdkWindow">GdkWindow</a>*          gdk_screen_get_root_window          (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the root window of <em class="parameter"><code>screen</code></em>.</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 root window

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068347"></a><h3>
<a name="gdk-screen-get-display"></a>gdk_screen_get_display ()</h3>
<a class="indexterm" name="id3068362"></a><pre class="programlisting"><a class="link" href="GdkDisplay.html" title="GdkDisplay">GdkDisplay</a>*         gdk_screen_get_display              (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the display to which the <em class="parameter"><code>screen</code></em> belongs.</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 display to which <em class="parameter"><code>screen</code></em> belongs

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068449"></a><h3>
<a name="gdk-screen-get-number"></a>gdk_screen_get_number ()</h3>
<a class="indexterm" name="id3068465"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a>                gdk_screen_get_number               (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the index of <em class="parameter"><code>screen</code></em> among the screens in the display
to which it belongs. (See <a class="link" href="GdkScreen.html#gdk-screen-get-display"><code class="function">gdk_screen_get_display()</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 index

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068557"></a><h3>
<a name="gdk-screen-get-width"></a>gdk_screen_get_width ()</h3>
<a class="indexterm" name="id3068572"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a>                gdk_screen_get_width                (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the width of <em class="parameter"><code>screen</code></em> in pixels</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 width of <em class="parameter"><code>screen</code></em> in pixels.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068659"></a><h3>
<a name="gdk-screen-get-height"></a>gdk_screen_get_height ()</h3>
<a class="indexterm" name="id3068675"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a>                gdk_screen_get_height               (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the height of <em class="parameter"><code>screen</code></em> in pixels</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 height of <em class="parameter"><code>screen</code></em> in pixels.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068762"></a><h3>
<a name="gdk-screen-get-width-mm"></a>gdk_screen_get_width_mm ()</h3>
<a class="indexterm" name="id3068777"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a>                gdk_screen_get_width_mm             (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Gets the width of <em class="parameter"><code>screen</code></em> in millimeters. 
Note that on some X servers this value will not be correct.</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 width of <em class="parameter"><code>screen</code></em> in millimeters.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068865"></a><h3>
<a name="gdk-screen-get-height-mm"></a>gdk_screen_get_height_mm ()</h3>
<a class="indexterm" name="id3068880"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a>                gdk_screen_get_height_mm            (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Returns the height of <em class="parameter"><code>screen</code></em> in millimeters. 
Note that on some X servers this value will not be correct.</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 heigth of <em class="parameter"><code>screen</code></em> in millimeters.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3068969"></a><h3>
<a name="gdk-screen-list-visuals"></a>gdk_screen_list_visuals ()</h3>
<a class="indexterm" name="id3068984"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"
>GList</a>*              gdk_screen_list_visuals             (<a class="link" href="GdkScreen.html" title="GdkScreen">GdkScreen</a> *screen);</pre>
<p>
Lists the available visuals for the specified <em class="parameter"><code>screen</code></em>.
A visual describes a hardware image data format.
For example, a visual might support 24-bit color, or 8-bit color,
and might expect pixels to be in a certain format.
</p>
<p>
Call <a
href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"
><code class="function">g_list_free()</code></a> on the return value when you're finished with 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>screen</code></em>&#160;:</span></p></td>
<td> the relevant <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> a list of visuals; the list must be freed, but not its 
contents

</td>
</tr>
</tbody>
</table></div>