Using the Windows 2000/XP Object Selection Dialog

#pragma once

#include "resource.h"       // main symbols
#include "ADObjectInfo.h"

[
	object,
	uuid("B7FA5AB6-104F-4B75-BDA2-AD53513FF760"),
	dual,	helpstring("IADObjectColl Interface"),
	pointer_default(unique)
]
__interface IADObjectColl : IDispatch
{
	[propget, id(1), helpstring("property Count")] HRESULT Count([out, retval] ULONG* pVal);
	[id(DISPID_VALUE), helpstring("method Item")] HRESULT Item([in] long index, [out, retval] IADObjectInfo** pVal);
	[propget, id(DISPID_NEWENUM), helpstring("property _NewEnum")] HRESULT _NewEnum([out, retval] LPUNKNOWN *pVal);
	[id(2), helpstring("method Add")] HRESULT Add([out,retval] IADObjectInfo** ppObjInfo);
	[id(3), helpstring("method RemoveAll")] HRESULT RemoveAll(void);
};

[
	coclass,
	threading("apartment"),
	vi_progid("ObjectPickerHelper.ADObjectColl"),
	progid("ObjectPickerHelper.ADObjectColl.1"),
	version(1.0),
	uuid("CFB801A3-660A-4B85-9FA5-DE0C0333C216"),
	helpstring("ADObjectColl Class"),
	default(IADObjectColl)
]
class ATL_NO_VTABLE CADObjectColl : 
	public IADObjectColl
{
public:
	CADObjectColl()
	{
	}

	DECLARE_PROTECT_FINAL_CONSTRUCT()

	HRESULT FinalConstruct()
	{
		return S_OK;
	}
	
	void FinalRelease() 
	{
		Zap();
	}
	void Zap()
	{
		// cleanup of the dispatch pointers we are storing
		IADObjectInfo* p;

		std::vector<IADObjectInfo*>::iterator i;
		std::vector<IADObjectInfo*>::iterator begin = m_coll.begin();
		std::vector<IADObjectInfo*>::iterator end = m_coll.end();
		for (i = begin; i !=end; ++i)
		{
			p = *i;
			p->Release();
		}
		
		m_coll.resize(0);
	}

public:

	STDMETHOD(get_Count)(ULONG* pVal);
	STDMETHOD(get__NewEnum)(/*[out, retval]*/ LPUNKNOWN *pVal);
	STDMETHOD(Item)(/*[in]*/ long index, /*[out, retval]*/ IADObjectInfo**  pVal);
	STDMETHOD(Add)(IADObjectInfo** ppObjInfo);

protected:
	typedef std::vector<IADObjectInfo*> ADObjectInfoVector;
	ADObjectInfoVector	m_coll;

public:
	STDMETHOD(RemoveAll)(void);
};