polyctl.h

VisualC++实践与提高-ActiveX篇源码

// PolyCtl.h : Declaration of the CPolyCtl

#ifndef __POLYCTL_H_
#define __POLYCTL_H_

#include <math.h>
#include "resource.h"       // main symbols
#include <atlctl.h>
#include "AxAtlCtlCP.h"

/////////////////////////////////////////////////////////////////////////////
// CPolyCtl
class ATL_NO_VTABLE CPolyCtl : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CStockPropImpl<CPolyCtl, IPolyCtl, &IID_IPolyCtl, &LIBID_AXATLCTLLib>,
	public CComControl<CPolyCtl>,
	public IPersistStreamInitImpl<CPolyCtl>,
	public IOleControlImpl<CPolyCtl>,
	public IOleObjectImpl<CPolyCtl>,
	public IOleInPlaceActiveObjectImpl<CPolyCtl>,
	public IViewObjectExImpl<CPolyCtl>,
	public IOleInPlaceObjectWindowlessImpl<CPolyCtl>,
	public ISupportErrorInfo,
	public IConnectionPointContainerImpl<CPolyCtl>,
	public IPersistStorageImpl<CPolyCtl>,
	public ISpecifyPropertyPagesImpl<CPolyCtl>,
	public IQuickActivateImpl<CPolyCtl>,
	public IDataObjectImpl<CPolyCtl>,
	public IProvideClassInfo2Impl<&CLSID_PolyCtl, &DIID__IPolyCtlEvents, &LIBID_AXATLCTLLib>,
	public IPropertyNotifySinkCP<CPolyCtl>,
	public CComCoClass<CPolyCtl, &CLSID_PolyCtl>,
	public CProxy_IPolyCtlEvents< CPolyCtl >
{
public:
	CPolyCtl()
	{
		m_nSides = 3;
		m_clrFillColor = RGB(255, 0, 0);
	}

DECLARE_REGISTRY_RESOURCEID(IDR_POLYCTL)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CPolyCtl)
	COM_INTERFACE_ENTRY(IPolyCtl)
	COM_INTERFACE_ENTRY(IDispatch)
	COM_INTERFACE_ENTRY(IViewObjectEx)
	COM_INTERFACE_ENTRY(IViewObject2)
	COM_INTERFACE_ENTRY(IViewObject)
	COM_INTERFACE_ENTRY(IOleInPlaceObjectWindowless)
	COM_INTERFACE_ENTRY(IOleInPlaceObject)
	COM_INTERFACE_ENTRY2(IOleWindow, IOleInPlaceObjectWindowless)
	COM_INTERFACE_ENTRY(IOleInPlaceActiveObject)
	COM_INTERFACE_ENTRY(IOleControl)
	COM_INTERFACE_ENTRY(IOleObject)
	COM_INTERFACE_ENTRY(IPersistStreamInit)
	COM_INTERFACE_ENTRY2(IPersist, IPersistStreamInit)
	COM_INTERFACE_ENTRY(ISupportErrorInfo)
	COM_INTERFACE_ENTRY(IConnectionPointContainer)
	COM_INTERFACE_ENTRY(ISpecifyPropertyPages)
	COM_INTERFACE_ENTRY(IQuickActivate)
	COM_INTERFACE_ENTRY(IPersistStorage)
	COM_INTERFACE_ENTRY(IDataObject)
	COM_INTERFACE_ENTRY(IProvideClassInfo)
	COM_INTERFACE_ENTRY(IProvideClassInfo2)
	COM_INTERFACE_ENTRY_IMPL(IConnectionPointContainer)
END_COM_MAP()

BEGIN_PROP_MAP(CPolyCtl)
	PROP_DATA_ENTRY("_cx", m_sizeExtent.cx, VT_UI4)
	PROP_DATA_ENTRY("_cy", m_sizeExtent.cy, VT_UI4)
	PROP_ENTRY("BackColor", DISPID_BACKCOLOR, CLSID_StockColorPage)
	PROP_ENTRY("FillColor", DISPID_FILLCOLOR, CLSID_StockColorPage)
	PROP_ENTRY("Sides", 1, CLSID_PolyProp)	// Example entries
	// PROP_ENTRY("Property Description", dispid, clsid)
	// PROP_PAGE(CLSID_StockColorPage)
END_PROP_MAP()

BEGIN_CONNECTION_POINT_MAP(CPolyCtl)
	CONNECTION_POINT_ENTRY(IID_IPropertyNotifySink)
	CONNECTION_POINT_ENTRY(DIID__IPolyCtlEvents)
END_CONNECTION_POINT_MAP()

BEGIN_MSG_MAP(CPolyCtl)
	CHAIN_MSG_MAP(CComControl<CPolyCtl>)
	DEFAULT_REFLECTION_HANDLER()
	MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
END_MSG_MAP()
// Handler prototypes:
//  LRESULT MessageHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
//  LRESULT CommandHandler(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled);
//  LRESULT NotifyHandler(int idCtrl, LPNMHDR pnmh, BOOL& bHandled);



// ISupportsErrorInfo
	STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid)
	{
		static const IID* arr[] = 
		{
			&IID_IPolyCtl,
		};
		for (int i=0; i<sizeof(arr)/sizeof(arr[0]); i++)
		{
			if (InlineIsEqualGUID(*arr[i], riid))
				return S_OK;
		}
		return S_FALSE;
	}

// IViewObjectEx
	DECLARE_VIEW_STATUS(VIEWSTATUS_SOLIDBKGND | VIEWSTATUS_OPAQUE)

// IPolyCtl
public:
	STDMETHOD(get_Slides)(/*[out, retval]*/ short *pVal);
	STDMETHOD(put_Slides)(/*[in]*/ short newVal);
	void CalcPoints(const RECT& rc);

/*
	HRESULT OnDraw(ATL_DRAWINFO& di)
	{
		RECT& rc = *(RECT*)di.prcBounds;
		Rectangle(di.hdcDraw, rc.left, rc.top, rc.right, rc.bottom);

		SetTextAlign(di.hdcDraw, TA_CENTER|TA_BASELINE);
		LPCTSTR pszText = _T("ATL 3.0 : PolyCtl");
		TextOut(di.hdcDraw, 
			(rc.left + rc.right) / 2, 
			(rc.top + rc.bottom) / 2, 
			pszText, 
			lstrlen(pszText));

		return S_OK;
	}
*/
	HRESULT CPolyCtl::OnDraw(ATL_DRAWINFO& di)
	{
		RECT& rc = *(RECT*)di.prcBounds;
		HDC hdc  = di.hdcDraw;

		COLORREF    colFore;
		HBRUSH      hOldBrush, hBrush;
		HPEN        hOldPen, hPen;

		// Translate m_colFore into a COLORREF type
		OleTranslateColor(m_clrFillColor, NULL, &colFore);

		// Create and select the colors to draw the circle
		hPen = (HPEN)GetStockObject(BLACK_PEN);
		hOldPen = (HPEN)SelectObject(hdc, hPen);
		hBrush = (HBRUSH)GetStockObject(WHITE_BRUSH);
		hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);

		Ellipse(hdc, rc.left, rc.top, rc.right, rc.bottom);

		// Create and select the brush that will be used to fill the polygon
		hBrush    = CreateSolidBrush(colFore);
		SelectObject(hdc, hBrush);

		CalcPoints(rc);
		Polygon(hdc, &m_arrPoint[0], m_nSides);

		// Select back the old pen and brush and delete the brush we created
		SelectObject(hdc, hOldPen);
		SelectObject(hdc, hOldBrush);
		DeleteObject(hBrush);

		return S_OK;
	}

	OLE_COLOR m_clrBackColor;
	OLE_COLOR m_clrFillColor;
	short m_nSides; 
	POINT m_arrPoint[100];

	LRESULT CPolyCtl::OnLButtonDown(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
	{
		HRGN hRgn;
		WORD xPos = LOWORD(lParam);  // horizontal position of cursor
		WORD yPos = HIWORD(lParam);  // vertical position of cursor

		CalcPoints(m_rcPos);

		// Create a region from our list of points
		hRgn = CreatePolygonRgn(&m_arrPoint[0], m_nSides, WINDING);

		// If the clicked point is in our polygon then fire the ClickIn
		//  event otherwise we fire the ClickOut event
		if (PtInRegion(hRgn, xPos, yPos))
		  Fire_ClickIn(xPos, yPos);
		else
		  Fire_ClickOut(xPos, yPos);

		// Delete the region that we created
		DeleteObject(hRgn);
		return 0;
	}

};

#endif //__POLYCTL_H_