[Mono-bugs] [Bug 520437] [PATCH] using == operator when comparing too difference refs to the same native COM object returns false .NET difference

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http://bugzilla.novell.com/show_bug.cgi?id=520437

User robertj at gmx.net added comment
http://bugzilla.novell.com/show_bug.cgi?id=520437#c8





--- Comment #8 from Robert Jordan <robertj at gmx.net>  2009-07-11 14:41:48 MDT ---
Related to the first issue, the following sample is failing on MS.NET with:

Unhandled Exception: System.InvalidCastException: Unable to cast object of type
'LgWritingSystemFactory' to type 'LgWritingSystemFactory2'.
   at Test.Main()

So it seems that we cannot alias 2 ComImport classes:


using System;
using System.Runtime.InteropServices;

[ComImport]
[ClassInterface(ClassInterfaceType.None)]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[Guid("D96B7867-EDE6-4c0d-80C6-B929300985A6")] // <-- same GUID
internal class LgWritingSystemFactory
{
}

[ComImport]
[ClassInterface(ClassInterfaceType.None)]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[Guid("D96B7867-EDE6-4c0d-80C6-B929300985A6")] // <-- same GUID
internal class LgWritingSystemFactory2
{
}

class Test
{
    static void Main()
    {
        new LgWritingSystemFactory();
        new LgWritingSystemFactory2();
    }
}

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