A Float Tree Control like the Parameter List Control in Visual Studio

#if !defined(AFX_XMLTREECTRL_H__9C37AE6A_3FF2_4105_8938_A3984DE1AE9E__INCLUDED_)
#define AFX_XMLTREECTRL_H__9C37AE6A_3FF2_4105_8938_A3984DE1AE9E__INCLUDED_
//***********************************************
/* Author : Johnson Zhou(ZhouQiang)
/* Purpose: header file for a floating tree control like
/*			list parameter infomation list .
/*I borrowed code of XML tree from Frank Le from www.codeproject.com
/*Copyright by Johnson Zhou(ZhouQiang) (c) 2002
//***********************************************/
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// XMLTreeCtrl.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CXMLTreeCtrl window
// Image indexes.
const int ILI_ROOT = 0;
const int ILI_ELEMENT = 1;
const int ILI_TEXT = 2;
const int ILI_OTHER = 3;
const int ILI_ATTRIBUTE = 4;
const int ILI_COMMENT = 5;
#import "msxml.dll" named_guids

#define WM_FLOAT_CTRL WM_USER+2002

class CXMLTreeCtrl : public CTreeCtrl
{
// Construction
public:
	CXMLTreeCtrl();

// Attributes
public:

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CXMLTreeCtrl)
	public:
	protected:
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	//}}AFX_VIRTUAL

// Implementation
public:
	BOOL CreateTree(CRect rect,CWnd *parent,UINT image=0);
	void ShowMe(CPoint &pt,int show=SW_SHOW);
	void SetImages(UINT resource);
	virtual ~CXMLTreeCtrl();
	BOOL loadXML(const CString &strPathName, const BOOL bOptimizeMemory /*= FALSE*/);
protected:
    BOOL populateNode(MSXML::IXMLDOMElement* node, const HTREEITEM& hItem);
	BOOL populateAttributes(MSXML::IXMLDOMElement *node, const HTREEITEM &hParent);
    HTREEITEM insertItem(MSXML::IXMLDOMElement* node, 
        const CString &nodeName, int nImage, int nSelectedImage, 
        HTREEITEM hParent = TVI_ROOT, HTREEITEM hInsertAfter = TVI_LAST);
    void deleteFirstChild(const HTREEITEM& hItem);
	void deleteAllChildren(const HTREEITEM& hItem);
	int getIconIndex(MSXML::IXMLDOMElement* node);
	CImageList m_theImageList;
	BOOL m_bOptimizeMemory;
	// Generated message map functions
protected:
	//{{AFX_MSG(CXMLTreeCtrl)
	afx_msg void OnItemexpanding(NMHDR* pNMHDR, LRESULT* pResult);
	afx_msg void OnDblclk(NMHDR* pNMHDR, LRESULT* pResult);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	//}}AFX_MSG

	DECLARE_MESSAGE_MAP()
};

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

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_XMLTREECTRL_H__9C37AE6A_3FF2_4105_8938_A3984DE1AE9E__INCLUDED_)