Using .NET in native C++ DLL of PTC Pro/TOOLKIT

Hello!

I have to write a synchrone application for PTC Pro/ENGINEER Wildfire 4.0 using Visual Studio 2005.
Pro/TOOLKIT is an API in native C/C++.
The DLL is loaded as plugin into Pro/ENGINEER.

It is not possible to compile that Project in CLR (I think, an tried)

Now I tried a Win32 DLL, use the CLR Switch and linked the DLL static to my dll.

Linking works but on a call to a managed function, Pro/ENGINEER crashes.

Is there a solution for such a problem?

Thanks for help!

Lars

The Managed Test Class

namespace WpfProject
{
    public class StartClass
    {
        public static void Start()
        {
            String test = "This is a test";
            MessageBox.Show(test);
        }
    }
}

The DLL

#ifdef MANAGEDBRIDGEDLL_EXPORTS
#define MANAGEDBRIDGEDLL_API __declspec(dllexport)
#else
#define MANAGEDBRIDGEDLL_API __declspec(dllimport)
#endif

// Diese Klasse wird aus ManagedBridgeDll.dll exportiert.
class MANAGEDBRIDGEDLL_API CManagedBridgeDll
{
	
public:
	CManagedBridgeDll(void);
	~CManagedBridgeDll();

	void StartDlg(void);
};


CManagedBridgeDll::CManagedBridgeDll()
{
}

CManagedBridgeDll::~CManagedBridgeDll()
{
}

void CManagedBridgeDll::StartDlg(void)
{
	WpfProject::StartClass::Start();
}

The call from the plugin

#include <ManagedBridgeDll.h>
int MtkCmdTestFunction(uiCmdCmdId command, uiCmdValue *p_value, void *p_push_command_data)
	{
		try
		{
			CManagedBridgeDll *umc = new CManagedBridgeDll();
			umc->StartDlg();
			delete umc;
		}
		catch (std::exception& e)
		{
			WRITE_EXCEPTION_TO_PROE(e);
		}
		return 0;
	}