bmptofiledlg.h

一个关于加密的例子

// BmptoFileDlg.h : header file
//

#if !defined(AFX_BMPTOFILEDLG_H__653E99A4_879F_4518_A05B_7513EDF52572__INCLUDED_)
#define AFX_BMPTOFILEDLG_H__653E99A4_879F_4518_A05B_7513EDF52572__INCLUDED_

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

/* Handle to a DIB */
DECLARE_HANDLE(HDIB);

/* DIB constants */
#define PALVERSION   0x300

/* DIB Macros*/

#define IS_WIN30_DIB(lpbi)  ((*(LPDWORD)(lpbi)) == sizeof(BITMAPINFOHEADER))
#define RECTWIDTH(lpRect)     ((lpRect)->right - (lpRect)->left)
#define RECTHEIGHT(lpRect)    ((lpRect)->bottom - (lpRect)->top)

// WIDTHBYTES performs DWORD-aligning of DIB scanlines.  The "bits"
// parameter is the bit count for the scanline (biWidth * biBitCount),
// and this macro returns the number of DWORD-aligned bytes needed
// to hold those bits.

#define WIDTHBYTES(bits)    (((bits) + 31) / 32 * 4)
#define DIB_HEADER_MARKER   ((WORD) ('M' << 8) | 'B')

/////////////////////////////////////////////////////////////////////////////
// CBmptoFileDlg dialog

class CBmptoFileDlg : public CDialog
{
// Construction
public:
	WORD DIBNumColors(LPSTR lpbi);
	CBmptoFileDlg(CWnd* pParent = NULL);	// standard constructor

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

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

// Implementation
protected:
	DWORD PaletteSize(LPSTR lpBI);
	BOOL SaveDIB(HANDLE hDib, CFile& file);
	HANDLE DDBToDIB(CBitmap &bitmap, DWORD dwCompression, CPalette* pPal);
	HICON m_hIcon;

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

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

#endif // !defined(AFX_BMPTOFILEDLG_H__653E99A4_879F_4518_A05B_7513EDF52572__INCLUDED_)