webgrab.h

从internet上下载文件(http协议)的程序

#if !defined(AFX_WEBGRAB_H__D31F39A4_1C63_11D3_AA11_AC48B5000000__INCLUDED_)
#define AFX_WEBGRAB_H__D31F39A4_1C63_11D3_AA11_AC48B5000000__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// WebGrab.h : header file
//

#include <afxinet.h>

/////////////////////////////////////////////////////////////////////////////
// CWebGrabSession 

class CWebGrabSession : public CInternetSession
{
// Construction
public:
	CWebGrabSession(LPCTSTR szAgentName);
	CWebGrabSession(LPCTSTR szAgentName, CWnd* pStatusWnd);
	virtual ~CWebGrabSession();
    CommonConstruct();

// Operations
public:
    void SetStatus(LPCTSTR fmt, ...);
    void SetStatusWnd(CWnd* pWnd)     { m_pStatusWnd = pWnd; }

// Overrides
public:
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CWebGrabSession)
	//}}AFX_VIRTUAL
    virtual void OnStatusCallback(DWORD dwContext, DWORD dwInternetStatus, 
                                  LPVOID lpvStatusInformation, 
                                  DWORD dwStatusInformationLength);

	// Generated message map functions
	//{{AFX_MSG(CWebGrabSession)
	//}}AFX_MSG

// Attributes
protected:
    CWnd* m_pStatusWnd;
};


/////////////////////////////////////////////////////////////////////////////
// CWebGrab 

class CWebGrab : public CObject
{
public:
	CWebGrab();
	virtual ~CWebGrab();

// Operations
public:
    BOOL Initialise(LPCTSTR szAgentName = NULL, CWnd* pWnd = NULL);
    void Close();

    BOOL GetFile(LPCTSTR szURL, CString& strBuffer, 
                 LPCTSTR szAgentName = NULL, CWnd* pWnd = NULL);

// Overrides
public:
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CWebGrab)
	//}}AFX_VIRTUAL

	// Generated message map functions
	//{{AFX_MSG(CWebGrab))
	//}}AFX_MSG

protected:
    CWebGrabSession* m_pSession;
};

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

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

#endif // !defined(AFX_WEBGRAB_H__D31F39A4_1C63_11D3_AA11_AC48B5000000__INCLUDED_)