pcdmpicture.h

《Windows CE 权威指南》（作者：(美)CHRIS MUENCH

// PCDMPicture.h : Declaration of the CPCDMPicture

#ifndef __PCDMPICTURE_H_
#define __PCDMPICTURE_H_

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

// <BOOK_ADDON STEP6 Chapter 10.1.4> *****************************************
void DrawBitmapFromFile(HDC hdc,LPCTSTR FileName,DWORD Offset,
					    int x,int y, int dx, int dy,BOOL stretch);
#define WIDTHBYTES(bits)      ((((bits) + 31)>>5)<<2)
// </BOOK_ADDON STEP6 Chapter 10.1.4> *****************************************
/////////////////////////////////////////////////////////////////////////////
// CPCDMPicture
class ATL_NO_VTABLE CPCDMPicture : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public IDispatchImpl<IPCDMPicture, &IID_IPCDMPicture, &LIBID_PCDMUILib>,
	public CComControl<CPCDMPicture>,
	public IPersistStreamInitImpl<CPCDMPicture>,
	public IOleControlImpl<CPCDMPicture>,
	public IOleObjectImpl<CPCDMPicture>,
	public IOleInPlaceActiveObjectImpl<CPCDMPicture>,
	public IViewObjectExImpl<CPCDMPicture>,
	public IOleInPlaceObjectWindowlessImpl<CPCDMPicture>,
	public IPersistStorageImpl<CPCDMPicture>,
	public ISpecifyPropertyPagesImpl<CPCDMPicture>,
	public IQuickActivateImpl<CPCDMPicture>,
	public IDataObjectImpl<CPCDMPicture>,
	public IProvideClassInfo2Impl<&CLSID_PCDMPicture, NULL, &LIBID_PCDMUILib>,
	public CComCoClass<CPCDMPicture, &CLSID_PCDMPicture>
{
public:
	CPCDMPicture()
	{
// <BOOK_ADDON STEP6 Chapter 10.1.4> ***********************************
		m_hBitmap=NULL;
		m_lpSrcDIB=NULL;
	}
	~CPCDMPicture()
	{
		if (!m_hBitmap)
			DeleteObject(m_hBitmap);
		if (!m_lpSrcDIB)
			free(m_lpSrcDIB);
	}
// </BOOK_ADDON STEP6 Chapter 10.1.4> ***********************************

DECLARE_REGISTRY_RESOURCEID(IDR_PCDMPICTURE)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CPCDMPicture)
	COM_INTERFACE_ENTRY(IPCDMPicture)
	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(ISpecifyPropertyPages)
	COM_INTERFACE_ENTRY(IQuickActivate)
	COM_INTERFACE_ENTRY(IPersistStorage)
	COM_INTERFACE_ENTRY(IDataObject)
	COM_INTERFACE_ENTRY(IProvideClassInfo)
	COM_INTERFACE_ENTRY(IProvideClassInfo2)
END_COM_MAP()

BEGIN_PROP_MAP(CPCDMPicture)
	PROP_DATA_ENTRY("_cx", m_sizeExtent.cx, VT_UI4)
	PROP_DATA_ENTRY("_cy", m_sizeExtent.cy, VT_UI4)
	// Example entries
	// PROP_ENTRY("Property Description", dispid, clsid)
	// PROP_PAGE(CLSID_StockColorPage)
END_PROP_MAP()

BEGIN_MSG_MAP(CPCDMPicture)
	CHAIN_MSG_MAP(CComControl<CPCDMPicture>)
	DEFAULT_REFLECTION_HANDLER()
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);



// IViewObjectEx
	DECLARE_VIEW_STATUS(VIEWSTATUS_SOLIDBKGND | VIEWSTATUS_OPAQUE)

// IPCDMPicture
public:
	STDMETHOD(Load)(BSTR Path,LONG ResourceID);

	HRESULT OnDraw(ATL_DRAWINFO& di)
	{
		RECT& rc = *(RECT*)di.prcBounds;
		HBRUSH hBrush, hOldBrush;
		hBrush = (HBRUSH)GetStockObject(WHITE_BRUSH);
		hOldBrush = (HBRUSH)SelectObject(di.hdcDraw, hBrush);
		Rectangle(di.hdcDraw, rc.left, rc.top, rc.right, rc.bottom);
		SelectObject(di.hdcDraw, hOldBrush);

		LPCTSTR pszText = _T("ATL 3.0 : PCDMPicture");
		DrawText(di.hdcDraw, pszText, -1, &rc, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

		return S_OK;
	}
// <BOOK_ADDON STEP6 Chapter 10.1.4> ***********************************
private:
	BOOL BlitDIB( HDC JChdc,LPBITMAPINFO lpSrcDIB, int x,int y,int dx, int dy,BOOL bStretch );
	LPSTR FindDIBBits( LPSTR lpbi );
	WORD DIBNumColors( LPSTR lpbi );
	WORD PaletteSize( LPSTR lpbi );
	DWORD BytesPerLine( LPBITMAPINFOHEADER lpBMIH );	
	LPBYTE ReadBMPFile(LPCTSTR szFileName,DWORD Offset);
	HBITMAP			m_hBitmap;
	LPBYTE			m_lpSrcDIB;
// </BOOK_ADDON STEP6 Chapter 10.1.4> ***********************************
};

#endif //__PCDMPICTURE_H_