CHtmlEditView类的拖拽消息问题！

class CMsgEdit : public CHtmlEditView,

	public CMessageFilter

{

public:

	CMsgEdit(void);

	virtual ~CMsgEdit(void);



	BEGIN_MSG_MAP(CMsgEdit)

		MESSAGE_HANDLER(WM_CREATE, OnCreate)

		MESSAGE_HANDLER(WM_DESTROY, OnDestroy)

		MESSAGE_HANDLER(WM_MOUSEACTIVATE, OnMouseActivate)



		CHAIN_MSG_MAP(CHtmlEditView)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_UNDO, OnUndo)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_REDO, OnRedo)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_CUT, OnCut)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_COPY, OnCopy)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_COPY_ALL, OnCopyAll)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_PASTE, OnPaste)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_DELETE, OnDelete)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_SELECTALL, OnSelectAll)

		COMMAND_ID_HANDLER(MC_IDM_HTMLMENU_FONT, OnFont)

	END_MSG_MAP()



protected:

	CString		m_chatDefaultHtml;

	CString		m_scrollBarColor;

	static UINT	CF_HTML;



	LOGFONT		m_defaultFontInfo;

	COLORREF	m_defaultFontColor;

	BOOL		m_bFocus;



	void buildDefaultHtml();



public:

	LRESULT OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

	LRESULT OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

	LRESULT OnMouseActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

	BOOL OnBeforeNavigate2(IDispatch* pDisp, const String& szURL, DWORD dwFlags, const String& szTargetFrameName, CSimpleArray& pPostedData, const String& szHeaders);

	virtual BOOL OnShowContextMenu(DWORD dwID, POINT FAR* ppt, IUnknown FAR* pcmdTarget, IDispatch FAR* pdispReserved);

	LRESULT OnUndo(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnRedo(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnCut(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnCopy(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnCopyAll(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnPaste(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnDelete(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnSelectAll(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);

	LRESULT OnFont(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);



	void setScrollBarColor(LPCTSTR scrollBarColor);

	void emptyChatInput();

	void customPaste();



protected:

	DECLARE_DHTMLEDITING_CMDMAP(CMsgEdit)



public:

	BOOL PreTranslateMessage(LPMSG pMsg);

};