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1.21Gigawatts · #1 (**permalink**) 04-08-2005

Has anyone been able to successfully use North America and Europe in the same application?

I can create an instance of the MapPoint NA Application object with this:

Code:

MapPoint.ApplicationClass theApp = new MapPoint.ApplicationClass();

This works fine. I also want to create an instance of the MapPoint Europe Application object, which I assumed had the same interface.

Code:

Type mpType = Type.GetTypeFromProgID("MapPoint.Application.EU", false);
object mpEu = Activator.CreateInstance(mpType);
MapPoint.Application mpEuApp;
if(mpEu is MapPoint.Application)
{
   // MapPoint._Application also works
   // MapPoint.ApplicationClass does not work.

   mpEuApp = (MapPoint.Application)mpEu;
}

This also, works but MapPoint.Application and MapPoint._Application have different interfaces than MapPoint.ApplicationClass so I can't use them interchangeably nor do they even support all of the methods. I'm stuck!

**Winwaed** · #2 (**permalink**) 04-08-2005

In C++, I use

Code:

	_ApplicationPtr myAppPtr;

	if ( myAppPtr.CreateInstance(appObjName) != 0)
	{
		// error
	}

and set appObjName to "MapPoint.Application.NA" or "MapPoint.Application.EU"

I have an application that successfully queries the registry to find which versions are available, and then gives the user the choice.
(unfortunately it doesn't work for selecting 2002 vs 2004)
But it does work for selecting Europe vs. North America.

Richard

1.21Gigawatts · #3 (**permalink**) 04-08-2005

The problem I am having is not with creating instances (either NA or EU) of these applications. I can do that just fine. The problem I am having is that the instances don't have the same interface. So I can't decide which one I want to load and then assign it to some generic reference (which is what I'd like to do).

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Use MapPoint NA and MapPoint EU in the same application?

Use MapPoint NA and MapPoint EU in the same application?

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