childview.h

it s code MFC. i hope it will be usefull

// ChildView.h : interface of the CChildView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_CHILDVIEW_H__11D635A2_9543_43D9_B990_951BCB66F4C8__INCLUDED_)
#define AFX_CHILDVIEW_H__11D635A2_9543_43D9_B990_951BCB66F4C8__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

/////////////////////////////////////////////////////////////////////////////
// CChildView window

#include "Line.h"
#define MAX_LINES 100
#define MAX_PENS 3

class CChildView : public CWnd
{
// Construction
public:
	CChildView();

// Attributes
public:

// Operations
public:

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

// Implementation
public:
	virtual ~CChildView();

	// Generated message map functions
protected:
	//{{AFX_MSG(CChildView)
	afx_msg void OnPaint();
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnMButtonDblClk(UINT nFlags, CPoint point);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
private:
	CLine* m_apLines[MAX_LINES];
	CPen m_aPens[MAX_PENS];
	CLine* apLines[MAX_LINES];
	int m_nLines;
	int m_nPenIndex;

};

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

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

#endif // !defined(AFX_CHILDVIEW_H__11D635A2_9543_43D9_B990_951BCB66F4C8__INCLUDED_)