windows-xp/Source/XPSP1/NT/admin/activec/samples/dsplex/displex.h

//+-------------------------------------------------------------------------
//
//  Microsoft Windows
//
//  Copyright (C) Microsoft Corporation, 1999 - 1999
//
//  File:       DisplEx.h
//
//--------------------------------------------------------------------------

// DisplEx.h : Declaration of the CDisplEx

#ifndef __DISPLEX_H_
#define __DISPLEX_H_

#include "resource.h"       // main symbols
#include <asptlb.h>         // Active Server Pages Definitions

/////////////////////////////////////////////////////////////////////////////
// CDisplEx
class ATL_NO_VTABLE CDisplEx : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CDisplEx, &CLSID_DisplEx>,

   public IExtendTaskPad
{
public:
   CDisplEx();
  ~CDisplEx();

public:

DECLARE_REGISTRY_RESOURCEID(IDR_DISPLEX)
DECLARE_NOT_AGGREGATABLE(CDisplEx)

BEGIN_COM_MAP(CDisplEx)
   COM_INTERFACE_ENTRY(IExtendTaskPad)
END_COM_MAP()

// IExtendTaskPad interface members
   STDMETHOD(TaskNotify        )(IDataObject * pdo, VARIANT * pvarg, VARIANT * pvparam);
   STDMETHOD(GetTitle          )(LPOLESTR szGroup, LPOLESTR * szTitle);
   STDMETHOD(GetDescriptiveText)(LPOLESTR szGroup, LPOLESTR * szText);
   STDMETHOD(GetBackground     )(LPOLESTR szGroup, MMC_TASK_DISPLAY_OBJECT * pTDO);
   STDMETHOD(EnumTasks         )(IDataObject * pdo, BSTR szTaskGroup, IEnumTASK** ppEnumTASK);
   STDMETHOD(GetListPadInfo    )(LPOLESTR szGroup, MMC_LISTPAD_INFO * pListPadInfo);
};

class CEnumTasks : public IEnumTASK
{
public:
   CEnumTasks();
  ~CEnumTasks();

public:
// IUnknown implementation
   STDMETHOD(QueryInterface) (REFIID riid, LPVOID FAR* ppvObj);
   STDMETHOD_(ULONG, AddRef) ();
   STDMETHOD_(ULONG, Release) ();
private:
   ULONG m_refs;

public:
// IEnumTASKS implementation
   STDMETHOD(Next) (ULONG celt, MMC_TASK *rgelt, ULONG *pceltFetched);
   STDMETHOD(Skip) (ULONG celt);
   STDMETHOD(Reset)();
   STDMETHOD(Clone)(IEnumTASK **ppenum);
private:
   ULONG m_index;

public:
   HRESULT Init (IDataObject * pdo, LPOLESTR szTaskGroup);
private:
   int m_type; // task grouping mechanism
};

#endif //__DISPLEX_H_