Try something like this:<div><br><div><span class="Apple-style-span" style="white-space: pre; ">        [System.Runtime.InteropServices.DllImport (&quot;/usr/lib/libSystem.dylib&quot;)]</span></div><div><div><span class="Apple-style-span" style="white-space: pre;">        public static extern IntPtr dlopen (string path, int mode);
        [System.Runtime.InteropServices.DllImport(&quot;/usr/lib/libSystem.dylib&quot;)]
        public static extern string dlerror();

        static void Main (string[] args)
        {
                dlopen(&quot;/System/Library/Frameworks/CoreWLAN.framework/CoreWLAN&quot;, 0);
                Console.WriteLine(&quot;load error = {0}&quot;, dlerror());

                NSApplication.Init ();</span></div><div><span class="Apple-style-span" style="white-space: pre;"></span><span class="Apple-style-span" style="border-collapse: collapse; color: rgb(102, 102, 102); font-family: helvetica, arial, freesans, clean, sans-serif; font-size: 13px; line-height: 19px; ">                var interfaces = CWInterface.SupportedInterfaces();</span></div>
<div><div><span class="Apple-tab-span" style="white-space:pre">                </span>NSApplication.Main (args);</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>}</div><div><br></div></div><div>Duane</div><div><br>
</div><div><br></div><br><div class="gmail_quote">On Sun, Jan 16, 2011 at 11:26 PM, Ashok Gelal <span dir="ltr">&lt;<a href="mailto:ashokgelal@gmail.com">ashokgelal@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hello All,<div>Right now I&#39;m working on rewriting a popular open source software inSSIDEr from MetaGeek <span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:20px"><a href="http://goo.gl/ompgJ" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;line-height:1.4em;color:rgb(65, 131, 196);text-decoration:none;outline-style:none;outline-width:initial;outline-color:initial" target="_blank">http://goo.gl/ompgJ</a> makeing it cross platform using Mono and Gtk#. I&#39;ve managed to make the newly written application run in Windows and Linux, and just a few days ago we released an alpha version of it (<a href="https://github.com/metageek-llc/inSSIDer-2-Cross-Platform" target="_blank">https://github.com/metageek-llc/inSSIDer-2-Cross-Platform</a> - just the binaries for now) and so far the responses have been awesome! I&#39;ve met a guy or two talking against it for using Mono but, to be honest, I give a sh** about them.</span></div>


<div><span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:20px"><br></span></div><div><span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:20px">Now to the main point - to support the application so that it runs on Mac, I need CoreWlan framework. I&#39;ve successfully ran the program (without any Network Scan support) on Mac and it looks super awesome! I wrote the CoreWlan binding which is about 90% complete (see the attached corewlan.cs file), and it compiled fine without any error. I&#39;m pretty much sure only 90% coverage should allow me to at least write a simple &#39;hello, corewlan&#39; program but I&#39;m running out of luck. As soon as I call </span><span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:19px"><i>NSApplication.Init ()</i> and call my static method (<i>CWInterface.SupportedInterfaces()</i>, I get a segfault error right away. If I call the static method without calling <i>NSApplication.Init()</i>, I don&#39;t get any segfault but I always get a null value instead of an array of string.</span></div>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;line-height:1.5em !important;font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px">


I&#39;ve noticed that when trying to invoke the static method (or any other methods/ properties), the value of class_ptr is always 0x0.</p><p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;line-height:1.5em !important;font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px">


Here is the simple example that I&#39;m using:</p><p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px">


</p><p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>using System;</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><i><font color="#666666"><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:19px"></span></font><span style="font-family:helvetica, arial, freesans, clean, sans-serif;line-height:19px">using MonoMac.CoreWlan;</span></font></i></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>namespace MacInssider</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>{</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i><span style="white-space:pre-wrap">        </span>class MainClass</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i><span style="white-space:pre-wrap">        </span>{</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><i><font color="#666666"><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:19px"></span></font><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:19px"><span style="white-space:pre-wrap">                </span></span></font><span style="font-family:helvetica, arial, freesans, clean, sans-serif;line-height:19px">static void Main ()</span></font></i></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i><span style="white-space:pre-wrap">        </span>       {</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>                    // NSApplication.Init(); // if I uncomment this out, I get a segfault error right away</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i><span style="white-space:pre-wrap">                </span>      var interfaces = CWInterface.SupportedInterfaces();</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>                     // interfaces is always null at this point.</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><span style="font-family:helvetica, arial, freesans, clean, sans-serif;line-height:19px"><i><font color="#666666"><span style="white-space:pre-wrap"></span>               }</font></i></span></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i><span style="white-space:pre-wrap">        </span>}</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif" color="#666666"><span style="line-height:19px"><i>}</i></span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:19px">My ultimate target is to get this example working using Mono </span></font><span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:20px">(<a href="http://goo.gl/YzEQy" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;line-height:1.4em;color:rgb(65, 131, 196);text-decoration:underline;outline-style:none;outline-width:initial;outline-color:initial" target="_blank">http://goo.gl/YzEQy</a>). Can anyone help me where I&#39;m doing wrong? Or can help me port CoreWlan framework?</span></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><span style="font-family:helvetica, arial, freesans, clean, sans-serif;font-size:13px;line-height:20px">I&#39;ve attached the corewlan.cs file and also all the generated .g.cs files (I don&#39;t think attaching these .g files are required but just-in-case)</span></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:20px">Thanks,</span></font></p>


<p style="margin-top:1em !important;margin-right:0px !important;margin-bottom:1em !important;margin-left:0px !important;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><font face="helvetica, arial, freesans, clean, sans-serif"><span style="line-height:20px">Ashok Gelal</span></font></p>


<p></p>
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<br></blockquote></div><br></div></div>