How to debug a unmanaged automation mfc library launched via a 64 bit WinForm c# application.

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C#

.NET

Visual-Studio

WinForms

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Hello Everyone,

I have a very stranged issue I would like to share you.
I have the following application layer:

Layer Picture

The functionality and the issue:

Issue Picture

I cannot set a breakpoint in the mpAutomationMFC.dll OLE automation even if I have set the following options:

Options Picture

Does somebody have already encountered this issue and how would it be possible to fix it ?

Just to inform you about one point the mpAutomationMFC ole automation library has never been built in release mode. This would have been too easy to fix it. Please try it on your side and you will see the effect. I am running on Win7 64bit Pro and Visual Studio 2010.

Build mode Picture

I have attached the sample program code generated on VS 2010 in c#.
Sample application code

Thank you very much in advance
Happy end season to all of you.