picturedlg.h

VC中实现对SQL存储图片的操作,并在MFC中进行显示

// pictureDlg.h : header file
//

#if !defined(AFX_PICTUREDLG_H__BBB55BAE_BE57_48A2_960C_A43B9F91DCF4__INCLUDED_)
#define AFX_PICTUREDLG_H__BBB55BAE_BE57_48A2_960C_A43B9F91DCF4__INCLUDED_

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

/////////////////////////////////////////////////////////////////////////////
// CPictureDlg dialog

class CPictureDlg : public CDialog
{
// Construction
public:
	CPictureDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	//{{AFX_DATA(CPictureDlg)
	enum { IDD = IDD_PICTURE_DIALOG };
	CString	m_Sql;
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CPictureDlg)
	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(CPictureDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnUploadPicture();
	afx_msg void OnChoosePicture();
	afx_msg void OnDownloadPrePicture();
	afx_msg void OnDownloadNextPicture();
	afx_msg void OnShowPicture();
	afx_msg void OnRADIOStretch();
	afx_msg void OnRADIOCopy();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
private:
	_ConnectionPtr pado;
	_RecordsetPtr  m_pSet;
	CString strPicturePath;
	char    *m_pBMPBuffer;
	DWORD	m_nFileLen;
	HBITMAP	m_hPictureBitmap;
	BOOL    bFlag;
	BOOL    bStretchToFit;
public:
	void Open();
	void DrawPicture(int x,int y,CDC* pDC);
	void ReadData();
	void DestroyPicture();
	void ResetControls();
	BOOL LastRecord();
	BOOL FirstRecord();
	HBITMAP	BufferToHBITMAP();
};

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

#endif // !defined(AFX_PICTUREDLG_H__BBB55BAE_BE57_48A2_960C_A43B9F91DCF4__INCLUDED_)