readme.msvc

Datamatrix二维码库和测试程序,运行于linux,仔细研究可以很容易转化成VC程序,有这就没必要化钱买个控件了,本人libdmtx-0.3版本转化过,的确可行,现在把找到该版本的libdmtx

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            libdmtx - Open Source Data Matrix Software
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               libdmtx README file (MS Visual C++)

This README.msvc file contains information on building libdmtx in
MS Visual C++ for use on Windows. The general README file, also
found in this directory, contains a high level summary of libdmtx
and its components.


1. Introduction
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The following instructions will create static builds of dmtxread
and dmtxwrite for Windows using MS Visual C++.


2. Create a New Project
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  a. Download newest versions of libdmtx, libpng, and zlib
     packages from their official sites.

  b. Unpack into a directory as siblings (same folder level).

  c. Create project
     * Open Visual C++ 2008 Express Edition and select "File >
       New > Project From Existing Code..."
     * Click Next to indicate you want to create a "Visual C++"
       project.
     * Specify Project file location to indicate where the
       Visual C++ project files should be saved.
     * Set Project name to "libdmtx_utils" (or whatever).
     * Important: Uncheck the Add files to the project from
       these folders checkbox.
     * Click Next.

  d. Select Use Visual Studio and change Project Type to
     "Console application project".
     Click Next.

  e. Keep clicking Next and then click Finish.


3. Add Necessary Project Files
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Next we need to tell Visual C++ which files we want to include as
part of our project. For this example we're going to include
"dmtxread" but you alternatively could choose "dmtxwrite" if that
is your goal. Files can be included by right-clicking entire
folders or individual files in the Solution Explorer window, then
selecting Include In Project from the resulting pop-up. Doing
this, go through the list and include the following items:

   * libdmtx-0.6.0/dmtx.c
   * libdmtx-0.6.0/dmtx.h
   * libdmtx-0.6.0/util/dmtxread (whole folder)
   * libdmtx-0.6.0/util/common (whole folder)
   * All *.c and *.h files in the main libpng folder (not
     including subdirectories) except for example.c and pngtest.c
   * All *.c and *.h files in the main zlib folder (not including
     subdirectories) except for example.c and minigzip.c


4. Add Necessary Include Paths
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Almost done. We still need to tell Visual C++ where to look for
header files. This step can be done only after adding the project
files above, since the C/C++ options won't appear otherwise. To
add the include paths, right-click on the project name
("libdmtx_utils" in this example) in the Solution Explorer and
select Properties. This brings up a dialog that offers several
configurations. Expand Configuration Properties > C/C++ > General
and you should see a field on the right called Additional Include
Directories. Click on the "..." within this field and add the
following directories by clicking on the "new folder" icon.

   * Path to the main libdmtx directory
   * Path to libdmtx/util/common directory
   * Path to libdmtx/util/dmtxread or libdmtx/util/dmtxwrite
     (depending on which utility want)
   * Path to the main libpng directory
   * Path to the main zlib directory

That's it. You should now be able to "Build Solution" (F7) and
after a bunch of warnings it will say "1 succeeded". It is left
as an exercise for the reader to find where Visual C++ placed the
resulting executable.


5. This Document
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This document is derived from the wiki page located at:

  http://libdmtx.wiki.sourceforge.net/libdmtx+on+Windows+(MSVC)

If you find an error or have additional helpful information,
please edit the wiki directly with your updates.