Generic Database Class Using ADO to Execute Stored Procedures

// DBTier.idl : IDL source for DBTier.dll
//

// This file will be processed by the MIDL tool to
// produce the type library (DBTier.tlb) and marshalling code.

import "oaidl.idl";
import "ocidl.idl";
	[
		object,
		uuid(468FBD1F-07EE-11D5-A7AC-000021254ABB),
		dual,
		helpstring("ISample Interface"),
		pointer_default(unique)
	]
	interface ISample : IDispatch
	{
		[id(1), helpstring("method SampleCall")] HRESULT SampleCall([in]BSTR bstrCourseName, [out,retval]long *lCourseID);
	};

[
	uuid(468FBD13-07EE-11D5-A7AC-000021254ABB),
	version(1.0),
	helpstring("DBTier 1.0 Type Library")
]
library DBTIERLib
{
	importlib("stdole32.tlb");
	importlib("stdole2.tlb");

	[
		uuid(468FBD20-07EE-11D5-A7AC-000021254ABB),
		helpstring("Sample Class")
	]
	coclass Sample
	{
		[default] interface ISample;
	};
};