bmpdlg.h

the code for file get.it is a good example for the beginner.

// bmpDlg.h : header file
//

#if !defined(AFX_BMPDLG_H__A8994BD6_5E7E_452B_A568_8B0FE92BB877__INCLUDED_)
#define AFX_BMPDLG_H__A8994BD6_5E7E_452B_A568_8B0FE92BB877__INCLUDED_

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

/////////////////////////////////////////////////////////////////////////////
// CBmpDlg dialog

class CBmpDlg : public CDialog
{
// Construction
public:
	BOOL		LoadBitmapFile(CString strFileName,CBitmap& bmp);
	void		DrawBmp(CBitmap& bmp);

	BOOL		SaveBitmapFile(CString strFileName,CBitmap& bmp);
public:
	CBitmap*	m_pBmp;
public:
	CBmpDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	//{{AFX_DATA(CBmpDlg)
	enum { IDD = IDD_BMP_DIALOG };
		// NOTE: the ClassWizard will add data members here
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CBmpDlg)
	public:
	virtual BOOL DestroyWindow();
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(CBmpDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnButtonBitmap();
	afx_msg void OnButtonSave();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

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

#endif // !defined(AFX_BMPDLG_H__A8994BD6_5E7E_452B_A568_8B0FE92BB877__INCLUDED_)