pango-win32-fonts-and-rendering.html

GTK+-2.0源码之pango-1.15.6.tar.gz

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<p>Since  1.2
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<a name="id2873244"></a><h3>
<a name="pango-win32-get-dc"></a>pango_win32_get_dc ()</h3>
<a class="indexterm" name="id2873257"></a><pre class="programlisting">HDC         pango_win32_get_dc              (void);</pre>
<p>
Obtains a handle to the Windows device context that is used by Pango.</p>
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> A handle to the Windows device context that is used by Pango.
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<a name="id2873298"></a><h3>
<a name="PangoWin32FontCache"></a>PangoWin32FontCache</h3>
<a class="indexterm" name="id2873311"></a><pre class="programlisting">typedef struct _PangoWin32FontCache PangoWin32FontCache;</pre>
<p>
A <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a> caches
HFONTs by their LOGFONT descriptions. 
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<a name="id2873336"></a><h3>
<a name="pango-win32-font-cache-new"></a>pango_win32_font_cache_new ()</h3>
<a class="indexterm" name="id2873350"></a><pre class="programlisting"><a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache">PangoWin32FontCache</a>* pango_win32_font_cache_new
                                            (void);</pre>
<p>
Creates a font cache.</p>
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> The new font cache. This must be freed with
<a href="pango-Win32-Fonts-and-Rendering.html#pango-win32-font-cache-free"><code class="function">pango_win32_font_cache_free()</code></a>.
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<a name="id2873402"></a><h3>
<a name="pango-win32-font-cache-free"></a>pango_win32_font_cache_free ()</h3>
<a class="indexterm" name="id2873415"></a><pre class="programlisting">void        pango_win32_font_cache_free     (<a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache">PangoWin32FontCache</a> *cache);</pre>
<p>
Frees a <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a> and all associated memory. All fonts loaded
through this font cache will be freed along with the cache.</p>
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<span class="term"><em class="parameter"><code>cache</code></em>&#160;:</span></td>
<td> a <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a>
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<a name="id2873483"></a><h3>
<a name="pango-win32-font-cache-load"></a>pango_win32_font_cache_load ()</h3>
<a class="indexterm" name="id2873497"></a><pre class="programlisting">HFONT       pango_win32_font_cache_load     (<a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache">PangoWin32FontCache</a> *cache,
                                             const LOGFONT *logfont);</pre>
<p>
Creates a HFONT from a LOGFONT. The
result may be newly loaded, or it may have been previously
stored</p>
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<span class="term"><em class="parameter"><code>cache</code></em>&#160;:</span></td>
<td> a <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a>
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<span class="term"><em class="parameter"><code>logfont</code></em>&#160;:</span></td>
<td> a pointer to a LOGFONT structure describing the font to load.
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> The font structure, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a> if the font could
not be loaded. In order to free this structure, you must call
<a href="pango-Win32-Fonts-and-Rendering.html#pango-win32-font-cache-unload"><code class="function">pango_win32_font_cache_unload()</code></a>.
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<a name="id2873612"></a><h3>
<a name="pango-win32-font-cache-unload"></a>pango_win32_font_cache_unload ()</h3>
<a class="indexterm" name="id2873625"></a><pre class="programlisting">void        pango_win32_font_cache_unload   (<a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache">PangoWin32FontCache</a> *cache,
                                             HFONT hfont);</pre>
<p>
Frees a font structure previously loaded with <a href="pango-Win32-Fonts-and-Rendering.html#pango-win32-font-cache-load"><code class="function">pango_win32_font_cache_load()</code></a>.</p>
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<span class="term"><em class="parameter"><code>cache</code></em>&#160;:</span></td>
<td> a <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a>
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<span class="term"><em class="parameter"><code>hfont</code></em>&#160;:</span></td>
<td> the HFONT to unload
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<a name="id2873717"></a><h3>
<a name="pango-win32-font-map-for-display"></a>pango_win32_font_map_for_display ()</h3>
<a class="indexterm" name="id2873730"></a><pre class="programlisting"><a href="pango-Fonts.html#PangoFontMap">PangoFontMap</a>* pango_win32_font_map_for_display
                                            (void);</pre>
<p>
Returns a <span class="type">PangoWin32FontMap</span>. Font maps are cached and should
not be freed. If the font map is no longer needed, it can
be released with <a href="pango-Win32-Fonts-and-Rendering.html#pango-win32-shutdown-display"><code class="function">pango_win32_shutdown_display()</code></a>.</p>
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a <a href="pango-Fonts.html#PangoFontMap"><span class="type">PangoFontMap</span></a>.
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<a name="id2873802"></a><h3>
<a name="pango-win32-shutdown-display"></a>pango_win32_shutdown_display ()</h3>
<a class="indexterm" name="id2873816"></a><pre class="programlisting">void        pango_win32_shutdown_display    (void);</pre>
<p>
Free cached resources.</p>
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<a name="id2873841"></a><h3>
<a name="pango-win32-font-map-get-font-cache"></a>pango_win32_font_map_get_font_cache ()</h3>
<a class="indexterm" name="id2873855"></a><pre class="programlisting"><a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache">PangoWin32FontCache</a>* pango_win32_font_map_get_font_cache
                                            (<a href="pango-Fonts.html#PangoFontMap">PangoFontMap</a> *font_map);</pre>
<p>
Obtains the font cache associated with the given font map.</p>
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<span class="term"><em class="parameter"><code>font_map</code></em>&#160;:</span></td>
<td> a <span class="type">PangoWin32FontMap</span>.
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the <a href="pango-Win32-Fonts-and-Rendering.html#PangoWin32FontCache"><span class="type">PangoWin32FontCache</span></a> of <em class="parameter"><code>font_map</code></em>.
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<div class="refsect2" lang="en">
<a name="id2873939"></a><h3>
<a name="pango-win32-font-logfont"></a>pango_win32_font_logfont ()</h3>
<a class="indexterm" name="id2873953"></a><pre class="programlisting">LOGFONT*    pango_win32_font_logfont        (<a href="pango-Fonts.html#PangoFont">PangoFont</a> *font);</pre>
<p>
Determine the LOGFONT struct for the specified font.</p>
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<span class="term"><em class="parameter"><code>font</code></em>&#160;:</span></td>
<td> a <a href="pango-Fonts.html#PangoFont"><span class="type">PangoFont</span></a> which must be from the Win32 backend
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> A newly allocated LOGFONT struct. It must be
freed with <a
href="../glib/glib-Memory-Allocation.html#g-free"
><code class="function">g_free()</code></a>.
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<a name="id2874033"></a><h3>
<a name="pango-win32-font-description-from-logfont"></a>pango_win32_font_description_from_logfont ()</h3>
<a class="indexterm" name="id2874050"></a><pre class="programlisting"><a href="pango-Fonts.html#PangoFontDescription">PangoFontDescription</a>* pango_win32_font_description_from_logfont
                                            (const LOGFONT *lfp);</pre>
<p>
Creates a <a href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> that matches the specified LOGFONT.
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<p>
The face name, italicness and weight fields in the LOGFONT are used
to set up the resulting <a href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a>. If the face name in
the LOGFONT contains non-ASCII characters the font is temporarily
loaded (using <code class="function">CreateFontIndirect()</code>) and an ASCII (usually English)
name for it is looked up from the font name tables in the font
data. If that doesn't work, the face name is converted from the
system codepage to UTF-8 and that is used.</p>
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<span class="term"><em class="parameter"><code>lfp</code></em>&#160;:</span></td>
<td> a LOGFONT
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<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the newly allocated <a href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a>, which
 should be freed using <a href="pango-Fonts.html#pango-font-description-free"><code class="function">pango_font_description_free()</code></a>

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<p>Since  1.12
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