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<META NAME="CLASSIFICATION" CONTENT="Description of ImageMagickObject as delivered with GraphicsMagick ">
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<B><FONT FACE="Helvetica, Arial"><FONT COLOR="#ffffff">ImageMagickObject
Overview</FONT></FONT></B></P>
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<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>The
ImageMagickObject is a COM+ compatible component that may be invoked
from any language capable of using COM objects. The intended use is
for Windows Scripting Host VBS scripts and Visual Basic, but it can
also be used from C++, ASP, and other languages like Delphi, Perl and
PHP.</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri">The strategy
with the ImageMagickObject COM+ component is not to the same as with
PerlMagick interface provided with ImageMagick. PerlMagick is a low
level API based system that defines a whole new way of scripting IM
operations. The IM COM+ component simply provides access to the
<A HREF="convert.html">convert</A>, <A HREF="composite.html">composite</A>,
<A HREF="mogrify.html">mogrify</A>, <A HREF="identify.html">identify</A>,
and <A HREF="montage.html">montage</A> tools, efficiently executing
them as part of your process, rather than as external programs. The
way you use it is exactly the same. You pass it a list of strings
including filenames and various options and it does the job. In fact,
you can take any existing batch scripts that use the command line
tools and translate them into the equivalent calls to the COM+ object
in a matter of minutes. Beyond that, there is also a way to pass in
and retrieve images in memory in the form of standard smart arrays
(byte arrays). Samples are provided, to show both the simple and more
elaborate forms of access.</FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri">GraphicsMagick
provides a statically-built ImageMagick object as part of its "utils"
<A HREF="INSTALL-windows.html">Windows installation package</A>. When this
package is installed, ImageMagickObject and its sample programs are
installed to</FONT></P>
<PRE STYLE="margin-bottom: 0.2in"> c:\Program Files\GraphicsMagick-1.0-Q16\ImageMagickObject</PRE><P>
<FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>by
default (path shown is for the Q:16 build). ImageMagickObject is
registered if the checkbox for "Register ImageMagickObject"
is checked at install time.</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>You
may execute the sample program from the Windows Command Shell like:</FONT></FONT></P>
<PRE STYLE="margin-bottom: 0.2in"> cscript SimpleTest.vbs</PRE><P>
<FONT FACE="Verdana, Arial, Helvetica, sans-seri">Since the
ImageMagick utility command line parsers are incorporated within
ImageMagickObject, please refer to the <A HREF="utilities.html">command
line utility documentation</A> to learn how to use it. The sample VBS
scripts show how the object should be called and used and have lots
of comments.</FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>For
C++ programmers - have a look at the MagickCMD.cpp command line
utility for an example of how to call the object from C++. This is a
bit complex because the object requires a variable size list of
BSTR's to emulate the command line argc, argv style calling
conventions of the COM component which is more complex in C++ then in
VBS or VB.</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>Other
goodies...</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>MagickCMD
is a C++ sample, but it can also server as a replacement for all the
other command line utilities in most applications. Instead of using
"convert xxxx yyyy" you can use "MagickCMD convert
xxxx yyyy" instead. MagickCMD calls the COM object to get the
job done. This small tight combination replaces the entire usual
binary distribution in just a few megabytes.</FONT></FONT></P>
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<B><FONT FACE="Helvetica, Arial"><FONT COLOR="#ffffff">Building
ImageMagickObject From Source</FONT></FONT></B></P>
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<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri">The source code
for ImageMagickObject is available from <A HREF="cvs.html">GraphicsMagick
CVS</A>, or as part of the <A HREF="download.html">GraphicsMagick
Windows source package</A>. Once the source code has been retrieved
and extracted, the source for ImageMagickObject may be found hidden
in the directory
"GraphicsMagick\contrib\win32\ATL7ImageMagickObject",
however, GraphicsMagick itself must be built using the
"static-multithread" (VisualStaticMT) build configuration.
Building ImageMagickObject requires Microsoft Visual C++ 7.0 as
delivered with Microsoft's Visual Studio .net package. See the
<A HREF="INSTALL-windows.html">Windows compilation instructions</A>
in order to get GraphicsMagick itself built before building
ImageMagickObject.</FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>Once
the VisualStaticMT project has been built, ImageMagickObject may be
built by following the procedure:</FONT></FONT></P>
<PRE> cd GraphicsMagick\contrib\win32\ATL7ImageMagickObject
BuildImageMagickObject release</PRE><P>
<FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>This
procedure assumes that the VisualStaticMT project has been built
using the "release" setting for an optimized build. If the
"debug" setting was used for a debug build, then specify
the argument "debug" instead.</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>To
register the DLL as a COM+ server use</FONT></FONT></P>
<PRE STYLE="margin-bottom: 0.2in"> regsvr32 /c /s ImageMagickObject.dll</PRE><P>
<FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>To
unregister the DLL use</FONT></FONT></P>
<PRE STYLE="margin-bottom: 0.2in"> regsvr32 /u /s ImageMagickObject.dll</PRE><P>
<FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>The
MagickCMD sample program operates similarly to the gm.exe program,
and is a great way to exercise ImageMagickObject to verify that it is
working.</FONT></FONT></P>
<P><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><FONT SIZE=3>Sometime
in the future, it is expected that MagickCMD will assume the place of
gm.exe in the "utils" distribution in order to decrease the
overall package size.</FONT></FONT></P>
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<P ALIGN=CENTER><FONT FACE="Verdana, Arial, Helvetica, sans-seri"><A HREF="Copyright.html">Copyright</A>
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GraphicsMagick Group 2002, 2003, 2004</FONT></P>
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