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POC++/CLI managed wrapper around C static library
 

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    <p>Help!</p> <p>I'm totally exhausted/frustrated with what seems to be a reasonably easy task. I’m not sure what I'm doing wrong; let alone if I'm doing it correct. I'm "required" to use an existing library (a C static library – over 100,000 lines of straight C code) in developing a WPF application (VS 2010, C# 4.0). Oh, and I can't touch the existing C code - use it as is!</p> <p>I've read so many postings (advanced topics, how-to, etc), yet I'm so new to C++/CLI that it's just not making sense. From what I've read the best approach is to wrap the C static library as follows:</p> <blockquote> <p>Unmanaged C static library &lt;---> C++/CLI managed wrapper DLL &lt;---> managed WPF application</p> </blockquote> <p>This is the stripped down C header file:</p> <pre><code>/* Call this function to execute a command. */ int issue_command(int command, long param1, long param2); /* Completion call back function; you must supply a definition. */ extern int command_completed(int command, long param1, long param2); struct struct_command_str { char command_str[10]; char param1_st[2]; char param2_st[2]; char success; }; /* You must supply definitions to the following extern items. */ extern int command_status; extern struct struct_command_str command_str; </code></pre> <p><strong>The problem(s):</strong></p> <p>What I can’t seem to do correctly is provide a C++/CLI implementation for the call back functions, and the two extern items (<code>command_status</code> and struct <code>command_str</code>).</p> <p>Can someone provide a sample C++/CLI implementation for the above missing call back functions and externs?</p> <p>Thanks in advance for your assistance.</p>
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