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<TITLE>GDI - CMetaFile class</TITLE>
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<FONT COLOR="#AOAO99">CMetaFile class</FONT></H3></CENTER>
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<p>This article was contributed by <a href="mailto:rec@kerridge.com">Robert Caldecott</a></p>
<p>The CMetaFile class is derived from CMetaFileDC and allows you to
easily load metafiles from disk and display them. A metafile can also
be displayed with various alignment options, in order to preserve
aspect ratio, etc. The class include serialization, allowing you to
embed a metafile into a CDocument, for example.</p>
<p>To use the class, simply include "meta.h" and create an instance:</p>
<p>CMetaFile m_meta;</p>
<p>To load a metafile from disk use one of the CMetaFile::Read functions.
One takes a pointer to a filename string, the other a pointer to a
pre-opened CFile object. The Read function will return FALSE if an
error occurred loading the metafile.</p>
<p>If you want to check if a file is a valid metafile, there is a static
CMetaFile::IsMetaFile function you can call. Pass a CFile pointer and
the function returns true if it's a valid metafile image.</p>
<p>That's about it. The example project shows how to embed a metafile in
a document and display it from a view. Examples of all the alignment
options are included.</p>
<p>Download <a href="metafile_source.zip" tppabs="http://www.codeguru.com/gdi/metafile_source.zip">Source.</a> and an <a href="metafile_example.zip" tppabs="http://www.codeguru.com/gdi/metafile_example.zip">Example</a></p>
<P>Posted on: April 11, 98.
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