[Mono-osx] CoreWlan Framework binding problem

[Duane Wandless]

The MonoMac library does not know that you need the CoreWLAN dynamic library
to be loaded so it is not.  MM has code for loading the standard dynamic
libraries.  In order for the bindings for CoreWLAN to work this library must
be loaded prior to MM's initialization.

Duane

On Tue, Jan 18, 2011 at 3:15 PM, Ashok Gelal <ashokgelal at gmail.com> wrote:

> Awesome! That's seems to work. But can you please explain why I need to
> call the following:
>
> dlopen("/System/Library/Frameworks/CoreWLAN.framework/CoreWLAN", 0);
>
> Thanks again. When I get some free time, I will rewrite the CoreWlan sample
> and will ask someone on git to pull it.
>
> ashok
>
> On Mon, Jan 17, 2011 at 8:28 AM, Duane Wandless <duane at wandless.net>wrote:
>
>> Try something like this:
>>
>> [System.Runtime.InteropServices.DllImport ("/usr/lib/libSystem.dylib")]
>> public static extern IntPtr dlopen (string path, int mode);
>> [System.Runtime.InteropServices.DllImport("/usr/lib/libSystem.dylib")]
>> public static extern string dlerror(); static void Main (string[] args) {
>> dlopen("/System/Library/Frameworks/CoreWLAN.framework/CoreWLAN", 0);
>> Console.WriteLine("load error = {0}", dlerror()); NSApplication.Init ();
>>                 var interfaces = CWInterface.SupportedInterfaces();
>>  NSApplication.Main (args);
>> }
>>
>> Duane
>>
>>
>>
>> On Sun, Jan 16, 2011 at 11:26 PM, Ashok Gelal <ashokgelal at gmail.com>wrote:
>>
>>> Hello All,
>>> Right now I'm working on rewriting a popular open source software
>>> inSSIDEr from MetaGeek http://goo.gl/ompgJ makeing it cross platform
>>> using Mono and Gtk#. I'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 (https://github.com/metageek-llc/inSSIDer-2-Cross-Platform - just
>>> the binaries for now) and so far the responses have been awesome! I've met a
>>> guy or two talking against it for using Mono but, to be honest, I give a
>>> sh** about them.
>>>
>>> Now to the main point - to support the application so that it runs on
>>> Mac, I need CoreWlan framework. I'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'm pretty much sure only 90%
>>> coverage should allow me to at least write a simple 'hello, corewlan'
>>> program but I'm running out of luck. As soon as I call *NSApplication.Init
>>> ()* and call my static method (*CWInterface.SupportedInterfaces()*, I
>>> get a segfault error right away. If I call the static method without calling
>>> *NSApplication.Init()*, I don't get any segfault but I always get a null
>>> value instead of an array of string.
>>>
>>> I've noticed that when trying to invoke the static method (or any other
>>> methods/ properties), the value of class_ptr is always 0x0.
>>>
>>> Here is the simple example that I'm using:
>>>
>>> *using System;*
>>>
>>> *using MonoMac.CoreWlan;*
>>>
>>> *namespace MacInssider*
>>>
>>> *{*
>>>
>>> * class MainClass*
>>>
>>> * {*
>>>
>>> * static void Main ()*
>>>
>>> *        {*
>>>
>>> *                    // NSApplication.Init(); // if I uncomment this
>>> out, I get a segfault error right away*
>>>
>>> *       var interfaces = CWInterface.SupportedInterfaces();*
>>>
>>> *                     // interfaces is always null at this point.*
>>>
>>> *               }*
>>>
>>> * }*
>>>
>>> *}*
>>>
>>> My ultimate target is to get this example working using Mono (
>>> http://goo.gl/YzEQy). Can anyone help me where I'm doing wrong? Or can
>>> help me port CoreWlan framework?
>>>
>>> I've attached the corewlan.cs file and also all the generated .g.cs files
>>> (I don't think attaching these .g files are required but just-in-case)
>>>
>>> Thanks,
>>>
>>> Ashok Gelal
>>>
>>>
>>> _______________________________________________
>>> Mono-osx mailing list
>>> Mono-osx at lists.ximian.com
>>> http://lists.ximian.com/mailman/listinfo/mono-osx
>>>
>>>
>>
>
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