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support dc_buffer when small size is used; add freetype  
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>FreeType-2.3.12 API Reference</title>
<style type="text/css">
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<table align=center><tr><td><font size=-1>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
<center><h1>FreeType-2.3.12 API Reference</h1></center>

<center><h1>
Bitmap Handling
</h1></center>
<h2>Synopsis</h2>
<table align=center cellspacing=5 cellpadding=0 border=0>
<tr><td></td><td><a href="#FT_Bitmap_New">FT_Bitmap_New</a></td><td></td><td><a href="#FT_Bitmap_Embolden">FT_Bitmap_Embolden</a></td><td></td><td><a href="#FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</a></td></tr>
<tr><td></td><td><a href="#FT_Bitmap_Copy">FT_Bitmap_Copy</a></td><td></td><td><a href="#FT_Bitmap_Convert">FT_Bitmap_Convert</a></td><td></td><td><a href="#FT_Bitmap_Done">FT_Bitmap_Done</a></td></tr>
</table><br><br>

<table align=center width="87%"><tr><td>
<p>This section contains functions for converting FT_Bitmap objects.</p>
</td></tr></table><br>
<table align=center width="75%"><tr><td>
<h4><a name="FT_Bitmap_New">FT_Bitmap_New</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <span class="keyword">void</span> )
  <b>FT_Bitmap_New</b>( <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>  *abitmap );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Initialize a pointer to an <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> structure.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>abitmap</b></td><td>
<p>A pointer to the bitmap structure.</p>
</td></tr>
</table>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

<table align=center width="75%"><tr><td>
<h4><a name="FT_Bitmap_Copy">FT_Bitmap_Copy</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_Bitmap_Copy</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a>        library,
                  <span class="keyword">const</span> <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>  *source,
                  <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>        *target);

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Copy a bitmap into another one.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>library</b></td><td>
<p>A handle to a library object.</p>
</td></tr>
<tr valign=top><td><b>source</b></td><td>
<p>A handle to the source bitmap.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>target</b></td><td>
<p>A handle to the target bitmap.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0&nbsp;means success.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

<table align=center width="75%"><tr><td>
<h4><a name="FT_Bitmap_Embolden">FT_Bitmap_Embolden</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_Bitmap_Embolden</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a>  library,
                      <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>*  bitmap,
                      <a href="ft2-basic_types.html#FT_Pos">FT_Pos</a>      xStrength,
                      <a href="ft2-basic_types.html#FT_Pos">FT_Pos</a>      yStrength );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Embolden a bitmap. The new bitmap will be about &lsquo;xStrength&rsquo; pixels wider and &lsquo;yStrength&rsquo; pixels higher. The left and bottom borders are kept unchanged.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>library</b></td><td>
<p>A handle to a library object.</p>
</td></tr>
<tr valign=top><td><b>xStrength</b></td><td>
<p>How strong the glyph is emboldened horizontally. Expressed in 26.6 pixel format.</p>
</td></tr>
<tr valign=top><td><b>yStrength</b></td><td>
<p>How strong the glyph is emboldened vertically. Expressed in 26.6 pixel format.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>bitmap</b></td><td>
<p>A handle to the target bitmap.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0&nbsp;means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>The current implementation restricts &lsquo;xStrength&rsquo; to be less than or equal to&nbsp;8 if bitmap is of pixel_mode <a href="ft2-basic_types.html#FT_Pixel_Mode">FT_PIXEL_MODE_MONO</a>.</p>
<p>If you want to embolden the bitmap owned by a <a href="ft2-base_interface.html#FT_GlyphSlotRec">FT_GlyphSlotRec</a>, you should call <a href="ft2-bitmap_handling.html#FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</a> on the slot first.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

<table align=center width="75%"><tr><td>
<h4><a name="FT_Bitmap_Convert">FT_Bitmap_Convert</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_Bitmap_Convert</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a>        library,
                     <span class="keyword">const</span> <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>  *source,
                     <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>        *target,
                     <a href="ft2-basic_types.html#FT_Int">FT_Int</a>            alignment );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Convert a bitmap object with depth 1bpp, 2bpp, 4bpp, or 8bpp to a bitmap object with depth 8bpp, making the number of used bytes per line (a.k.a. the &lsquo;pitch&rsquo;) a multiple of &lsquo;alignment&rsquo;.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>library</b></td><td>
<p>A handle to a library object.</p>
</td></tr>
<tr valign=top><td><b>source</b></td><td>
<p>The source bitmap.</p>
</td></tr>
<tr valign=top><td><b>alignment</b></td><td>
<p>The pitch of the bitmap is a multiple of this parameter. Common values are 1, 2, or 4.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>target</b></td><td>
<p>The target bitmap.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0&nbsp;means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>It is possible to call <a href="ft2-bitmap_handling.html#FT_Bitmap_Convert">FT_Bitmap_Convert</a> multiple times without calling <a href="ft2-bitmap_handling.html#FT_Bitmap_Done">FT_Bitmap_Done</a> (the memory is simply reallocated).</p>
<p>Use <a href="ft2-bitmap_handling.html#FT_Bitmap_Done">FT_Bitmap_Done</a> to finally remove the bitmap object.</p>
<p>The &lsquo;library&rsquo; argument is taken to have access to FreeType's memory handling functions.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

<table align=center width="75%"><tr><td>
<h4><a name="FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_GlyphSlot_Own_Bitmap</b>( <a href="ft2-base_interface.html#FT_GlyphSlot">FT_GlyphSlot</a>  slot );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Make sure that a glyph slot owns &lsquo;slot-&gt;bitmap&rsquo;.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>slot</b></td><td>
<p>The glyph slot.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0&nbsp;means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This function is to be used in combination with <a href="ft2-bitmap_handling.html#FT_Bitmap_Embolden">FT_Bitmap_Embolden</a>.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

<table align=center width="75%"><tr><td>
<h4><a name="FT_Bitmap_Done">FT_Bitmap_Done</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_BITMAP_H (freetype/ftbitmap.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>

  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_Bitmap_Done</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a>  library,
                  <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>  *bitmap );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Destroy a bitmap object created with <a href="ft2-bitmap_handling.html#FT_Bitmap_New">FT_Bitmap_New</a>.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>library</b></td><td>
<p>A handle to a library object.</p>
</td></tr>
<tr valign=top><td><b>bitmap</b></td><td>
<p>The bitmap object to be freed.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0&nbsp;means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>The &lsquo;library&rsquo; argument is taken to have access to FreeType's memory handling functions.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>

</body>
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