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Debugging in managed / unmanaged dlls doesn't work in VS 2005. Why?

I want to debug a piece of code written in C ++. The problem is the dlls are mixed - it contains both C ++ and CLI (managed C ++). Environment - VS 2005.

My entry point is a very simple executable project written in C ++ that only runs code in a mixed dll.

The problem is that:

  • if I allow "Debug Type" as "Auto" for both projects my breakpoints are not hit. (edit later: this is ok as Auto is based on the contents of the executable project).

  • if I set it to "mixed" the breakpoints are removed but the unmanaged clock is empty. For example, I can't see the value of std :: string. However, I can see basic types like int and bool.

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6 answers


I can debug in Mixed Mode in VS2005 by setting the Debugger Type to Mix in the project properties (under the Debug tab). Sometimes things like this go away after a good reboot and clean recovery.

If that doesn't work, try connecting to the app after it starts (Debug | Attach to Process). You can select a debug mode by clicking the "Select" button in the middle next to the "Attach to:" section.



Do you have all the updates from Microsoft? There might be one that solves your problem.

Overall, mixed mode debugging seems to work much better in VS2008. I recommend updating if possible. There is a free version, but I think it is limited in some way.

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Also try setting your debugger to Mixed. This will allow you to debug both managed and unmanaged code.



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Are you sure you have enabled all the debugging options? I saw this when I "forgot" some when trying to navigate the maze of C ++ options.

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I don't have my 2005/2008 environment in front of me, but I seem to remember that there is an option that needs to be enabled in the project settings (debug tab, I believe) in order to perform unmanaged debugging. Once this is enabled, you shouldn't have any problems.

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You need to tell Visual Studio to debug more than just your managed code. Go to the Tools | Options, select Debug | General. Uncheck the box next to Include My Code Only (Managed Only).

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LanceSc's recommendations really help.
Go to the Tools | Options, select Debug | General Provisions.
Uncheck "Include only my code (managed only)"
This resolves the issue in VS2008.

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