请教一个使用windows mediaplayer 控件的问题

#pragma once



// 计算机生成了由 Microsoft Visual C++ 创建的 IDispatch 包装类



// 注意: 不要修改此文件的内容。如果此类由

//  Microsoft Visual C++ 重新生成，您的修改将被改写。



/////////////////////////////////////////////////////////////////////////////

// COcx1 包装类



class COcx1 : public CWnd

{

protected:

	DECLARE_DYNCREATE(COcx1)

public:

	CLSID const& GetClsid()

	{

		static CLSID const clsid

			= { 0x6BF52A52, 0x394A, 0x11D3, { 0xB1, 0x53, 0x0, 0xC0, 0x4F, 0x79, 0xFA, 0xA6 } };

		return clsid;

	}

	virtual BOOL Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle,

						const RECT& rect, CWnd* pParentWnd, UINT nID, 

						CCreateContext* pContext = NULL)

	{ 

		return CreateControl(GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID); 

	}



    BOOL Create(LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, 

				UINT nID, CFile* pPersist = NULL, BOOL bStorage = FALSE,

				BSTR bstrLicKey = NULL)

	{ 

		return CreateControl(GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID,

		pPersist, bStorage, bstrLicKey); 

	}



// 属性

public:

enum

{

    amvUninitialized = 0,

    amvLoading = 1,

    amvInteractive = 3,

    amvComplete = 4

}ReadyStateConstants;

enum

{

    mpStopped = 0,

    mpPaused = 1,

    mpPlaying = 2,

    mpWaiting = 3,

    mpScanForward = 4,

    mpScanReverse = 5,

    mpClosed = 6

}MPPlayStateConstants;

enum

{

    mpDefaultSize = 0,

    mpHalfSize = 1,

    mpDoubleSize = 2,

    mpFullScreen = 3,

    mpFitToSize = 4,

    mpOneSixteenthScreen = 5,

    mpOneFourthScreen = 6,

    mpOneHalfScreen = 7

}MPDisplaySizeConstants;

enum

{

    mpReadyStateUninitialized = 0,

    mpReadyStateLoading = 1,

    mpReadyStateInteractive = 3,

    mpReadyStateComplete = 4

}MPReadyStateConstants;

enum

{

    mpTime = 0,

    mpFrames = 1

}MPDisplayModeConstants;

enum

{

    mpShowURL = 0,

    mpClipURL = 1,

    mpBannerURL = 2

}MPMoreInfoType;

enum

{

    mpShowFilename = 0,

    mpShowTitle = 1,

    mpShowAuthor = 2,

    mpShowCopyright = 3,

    mpShowRating = 4,

    mpShowDescription = 5,

    mpShowLogoIcon = 6,

    mpClipFilename = 7,

    mpClipTitle = 8,

    mpClipAuthor = 9,

    mpClipCopyright = 10,

    mpClipRating = 11,

    mpClipDescription = 12,

    mpClipLogoIcon = 13,

    mpBannerImage = 14,

    mpBannerMoreInfo = 15,

    mpWatermark = 16

}MPMediaInfoType;

enum

{

    dvdMenu_Title = 2,

    dvdMenu_Root = 3,

    dvdMenu_Subpicture = 4,

    dvdMenu_Audio = 5,

    dvdMenu_Angle = 6,

    dvdMenu_Chapter = 7

}DVDMenuIDConstants;

enum

{

    mpShowDialogHelp = 0,

    mpShowDialogStatistics = 1,

    mpShowDialogOptions = 2,

    mpShowDialogContextMenu = 3

}MPShowDialogConstants;





// 操作

public:







};