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<div class="appendix" title="Appendix A. Porting applications from Imlib to gdk-pixbuf">
<div class="titlepage"><div><div><h2 class="title">
<a name="id543484"></a>Appendix A. Porting applications from <span class="application">Imlib</span> to <span class="application">gdk-pixbuf</span>
</h2></div></div></div>
<p>
This appendix contains the basic steps needed to port an
application that uses the <span class="application">Imlib</span> library to use <span class="application">gdk-pixbuf</span>
instead.
</p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
This appendix refers to version 1 of the <span class="application">Imlib</span> library; this
discussion is not relevant to Imlib 2. Also, we discuss the
gdk_imlib API instead of the Xlib-based API.
</p>
</div>
<div class="sect1" title="Introduction">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id542807"></a>Introduction</h2></div></div></div>
<p>
Prior to the GNOME 1.2 platform, the <span class="application">Imlib</span> library was the
preferred way of loading and rendering images in GNOME
applications. Unfortunately, <span class="application">Imlib</span> has important design
limitations that make it hard to write efficient and highly
modular applications.
</p>
<p>
The <span class="application">gdk-pixbuf</span> library was designed as a solution to
<span class="application">Imlib</span>'s shortcomings. It provides a simple, orthogonal API
and convenience functions for the most common operations. In
addition, it supports full transparency information for
images, or alpha channel. More importantly, it has
well-defined semantics for memory management through the use
of reference counting; <span class="application">Imlib</span> has an intractably complex
memory management mechanism and cache that will make your head
spin.
</p>
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