zoomout.h

在vc环境下

#pragma once

#include "resource.h"       // main symbols

#include "ArcCommands.h"
#include "MapToolBase.h"

class ATL_NO_VTABLE CZoomout:
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CZoomout, &CLSID_Zoomout>,
	public CMapToolBase
{
public:
	CZoomout():
	  CMapToolBase( IDB_ZOOMOUT, IDS_CAPTION_ZOOMOUT, IDS_CATEGORY_COMMANDS, 0, 0, 0, 0, IDC_ZOOMOUT, IDC_ZOOMOUTMOVE)
	{
	}

	DECLARE_REGISTRY_RESOURCEID(IDR_ZOOMOUT)


	BEGIN_COM_MAP(CZoomout)
		COM_INTERFACE_ENTRY(ICommand)
		COM_INTERFACE_ENTRY(ITool)
	END_COM_MAP()


	DECLARE_PROTECT_FINAL_CONSTRUCT()

	HRESULT FinalConstruct()
	{
		return S_OK;
	}

	void FinalRelease() 
	{
	}

public:

	STDMETHOD(OnMouseDown)(LONG Button, LONG Shift, LONG X, LONG Y);
	STDMETHOD(OnMouseMove)(LONG Button, LONG Shift, LONG X, LONG Y);
	STDMETHOD(OnMouseUp)(LONG Button, LONG Shift, LONG X, LONG Y);
	STDMETHOD(OnKeyDown)(LONG keyCode, LONG Shift);
	STDMETHOD(Refresh)(OLE_HANDLE hDC);

private:
	void Reset();

private:
	IPointPtr               m_cpStartPoint;
	INewEnvelopeFeedbackPtr m_cpEnvelopeFeedback;
	IActiveViewPtr          m_cpActiveView;


};

OBJECT_ENTRY_AUTO(__uuidof(Zoomout), CZoomout)