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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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afxinet.h
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1998-06-16
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// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.
#ifndef __AFXINET_H_
#define __AFXINET_H_
#ifndef __AFX_H__
#include <afx.h>
#endif
#ifndef _WININET_
#include <wininet.h>
#endif
#ifndef _AFXDLL
#pragma comment(lib, "wininet.lib")
#endif
/////////////////////////////////////////////////////////////////////////////
// classes that are declared in this file
class CInternetSession; // from CObject
class CGopherLocator; // from CObject
class CInternetFile; // from CStdioFile (FILETXT.CPP)
class CHttpFile;
class CGopherFile;
class CInternetConnection;
class CFtpConnection;
class CGopherConnection;
class CHttpConnection;
class CFtpFileFind; // from CFileFind (FILEFIND.CPP)
class CGopherFileFind;
class CInternetException;
/////////////////////////////////////////////////////////////////////////////
#undef AFX_DATA
#define AFX_DATA AFX_CORE_DATA
/////////////////////////////////////////////////////////////////////////////
// Global Functions
BOOL AFXAPI AfxParseURL(LPCTSTR pstrURL, DWORD& dwServiceType,
CString& strServer, CString& strObject, INTERNET_PORT& nPort);
BOOL AFXAPI AfxParseURLEx(LPCTSTR pstrURL, DWORD& dwServiceType,
CString& strServer, CString& strObject, INTERNET_PORT& nPort,
CString& strUsername, CString& strPassword, DWORD dwFlags = 0);
DWORD AFXAPI AfxGetInternetHandleType(HINTERNET hQuery);
// see CInternetException at the bottom of this file
void AFXAPI AfxThrowInternetException(DWORD dwContext, DWORD dwError = 0);
// these are defined by WININET.H
#define AFX_INET_SERVICE_FTP INTERNET_SERVICE_FTP
#define AFX_INET_SERVICE_HTTP INTERNET_SERVICE_HTTP
#define AFX_INET_SERVICE_GOPHER INTERNET_SERVICE_GOPHER
// these are types that MFC parsing functions understand
#define AFX_INET_SERVICE_UNK 0x1000
#define AFX_INET_SERVICE_FILE (AFX_INET_SERVICE_UNK+1)
#define AFX_INET_SERVICE_MAILTO (AFX_INET_SERVICE_UNK+2)
#define AFX_INET_SERVICE_MID (AFX_INET_SERVICE_UNK+3)
#define AFX_INET_SERVICE_CID (AFX_INET_SERVICE_UNK+4)
#define AFX_INET_SERVICE_NEWS (AFX_INET_SERVICE_UNK+5)
#define AFX_INET_SERVICE_NNTP (AFX_INET_SERVICE_UNK+6)
#define AFX_INET_SERVICE_PROSPERO (AFX_INET_SERVICE_UNK+7)
#define AFX_INET_SERVICE_TELNET (AFX_INET_SERVICE_UNK+8)
#define AFX_INET_SERVICE_WAIS (AFX_INET_SERVICE_UNK+9)
#define AFX_INET_SERVICE_AFS (AFX_INET_SERVICE_UNK+10)
#define AFX_INET_SERVICE_HTTPS (AFX_INET_SERVICE_UNK+11)
/////////////////////////////////////////////////////////////////////////////
// classes that are declared in this file
class CInternetSession : public CObject
{
public:
CInternetSession(LPCTSTR pstrAgent = NULL,
DWORD dwContext = 1,
DWORD dwAccessType = PRE_CONFIG_INTERNET_ACCESS,
LPCTSTR pstrProxyName = NULL,
LPCTSTR pstrProxyBypass = NULL,
DWORD dwFlags = 0);
BOOL QueryOption(DWORD dwOption, LPVOID lpBuffer, LPDWORD lpdwBufLen) const;
BOOL QueryOption(DWORD dwOption, DWORD& dwValue) const;
BOOL QueryOption(DWORD dwOption, CString& refString) const;
BOOL SetOption(DWORD dwOption, LPVOID lpBuffer, DWORD dwBufferLength,
DWORD dwFlags = 0);
BOOL SetOption(DWORD dwOption, DWORD dwValue, DWORD dwFlags = 0);
CStdioFile* OpenURL(LPCTSTR pstrURL,
DWORD dwContext = 1, DWORD dwFlags = INTERNET_FLAG_TRANSFER_ASCII,
LPCTSTR pstrHeaders = NULL, DWORD dwHeadersLength = 0);
CFtpConnection* GetFtpConnection(LPCTSTR pstrServer,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
BOOL bPassive = FALSE);
CHttpConnection* GetHttpConnection(LPCTSTR pstrServer,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL);
CHttpConnection* GetHttpConnection(LPCTSTR pstrServer, DWORD dwFlags,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL);
CGopherConnection* GetGopherConnection(LPCTSTR pstrServer,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER);
BOOL EnableStatusCallback(BOOL bEnable = TRUE);
DWORD ServiceTypeFromHandle(HINTERNET hQuery);
// operations
DWORD GetContext() const;
operator HINTERNET() const;
virtual void Close();
// cookies
static BOOL SetCookie(LPCSTR pstrUrl, LPCTSTR pstrCookieName, LPCTSTR pstrCookieData);
static BOOL GetCookie(LPCSTR pstrUrl, LPCTSTR pstrCookieName, LPTSTR pstrCookieData, DWORD dwBufLen);
static DWORD GetCookieLength(LPCSTR pstrUrl, LPCTSTR pstrCookieName);
static BOOL GetCookie(LPCSTR pstrUrl, LPCTSTR pstrCookieName, CString& strCookieData);
// overridables
virtual void OnStatusCallback(DWORD dwContext, DWORD dwInternetStatus,
LPVOID lpvStatusInformation, DWORD dwStatusInformationLength);
// implementation
DECLARE_DYNAMIC(CInternetSession)
~CInternetSession();
protected:
DWORD m_dwContext;
HINTERNET m_hSession;
INTERNET_STATUS_CALLBACK m_pOldCallback;
BOOL m_bCallbackEnabled;
public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
#endif
};
////////////////////////////////////////////////////////////////////////////
// Internet File Access Wrapper
class CInternetFile : public CStdioFile
{
// Constructors
protected:
CInternetFile(HINTERNET hFile, LPCTSTR pstrFileName,
CInternetConnection* pConnection, BOOL bReadMode);
CInternetFile(HINTERNET hFile, HINTERNET hSession,
LPCTSTR pstrFileName, LPCTSTR pstrServer, DWORD dwContext,
BOOL bReadMode);
// Attributes
protected:
HINTERNET m_hFile;
public:
operator HINTERNET() const;
DWORD GetContext() const;
// Operations
BOOL SetWriteBufferSize(UINT nWriteSize);
BOOL SetReadBufferSize(UINT nReadSize);
BOOL QueryOption(DWORD dwOption, LPVOID lpBuffer, LPDWORD lpdwBufLen) const;
BOOL QueryOption(DWORD dwOption, DWORD& dwValue) const;
BOOL QueryOption(DWORD dwOption, CString& refString) const;
BOOL SetOption(DWORD dwOption, LPVOID lpBuffer, DWORD dwBufferLength,
DWORD dwFlags = 0);
BOOL SetOption(DWORD dwOption, DWORD dwValue, DWORD dwFlags = 0);
// Overridables
virtual LONG Seek(LONG lOffset, UINT nFrom);
virtual UINT Read(void* lpBuf, UINT nCount);
virtual void Write(const void* lpBuf, UINT nCount);
virtual void Abort();
virtual void Flush();
virtual void Close();
virtual DWORD GetLength() const;
virtual BOOL ReadString(CString& rString);
virtual LPTSTR ReadString(LPTSTR pstr, UINT nMax);
virtual void WriteString(LPCTSTR pstr);
// Not supported by CInternetFile
void LockRange(DWORD dwPos, DWORD dwCount);
void UnlockRange(DWORD dwPos, DWORD dwCount);
CFile* Duplicate() const;
virtual void SetLength(DWORD dwNewLen);
// Implementation
public:
virtual ~CInternetFile();
protected:
BOOL m_bReadMode;
DWORD m_dwContext;
HINTERNET m_hConnection;
CString m_strServerName;
UINT m_nWriteBufferSize;
UINT m_nWriteBufferPos;
LPBYTE m_pbWriteBuffer;
UINT m_nReadBufferSize;
UINT m_nReadBufferPos;
LPBYTE m_pbReadBuffer;
UINT m_nReadBufferBytes;
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif
friend class CInternetSession;
friend class CFtpConnection;
friend class CHttpConnection;
friend class CGopherConnection;
DECLARE_DYNAMIC(CInternetFile)
};
class CHttpFile : public CInternetFile
{
// Constructors
protected:
CHttpFile(HINTERNET hFile, HINTERNET hSession, LPCTSTR pstrObject,
LPCTSTR pstrServer, LPCTSTR pstrVerb, DWORD dwContext);
CHttpFile(HINTERNET hFile, LPCTSTR pstrVerb, LPCTSTR pstrObject,
CHttpConnection* pConnection);
// Operations
public:
BOOL AddRequestHeaders(LPCTSTR pstrHeaders,
DWORD dwFlags = HTTP_ADDREQ_FLAG_ADD_IF_NEW, int dwHeadersLen = -1);
BOOL AddRequestHeaders(CString& str,
DWORD dwFlags = HTTP_ADDREQ_FLAG_ADD_IF_NEW);
BOOL SendRequest(LPCTSTR pstrHeaders = NULL, DWORD dwHeadersLen = 0,
LPVOID lpOptional = NULL, DWORD dwOptionalLen = 0);
BOOL SendRequest(CString& strHeaders,
LPVOID lpOptional = NULL, DWORD dwOptionalLen = 0);
BOOL SendRequestEx(DWORD dwTotalLen,
DWORD dwFlags = HSR_INITIATE, DWORD dwContext = 1);
BOOL SendRequestEx(LPINTERNET_BUFFERS lpBuffIn,
LPINTERNET_BUFFERS lpBuffOut, DWORD dwFlags = HSR_INITIATE,
DWORD dwContext = 1);
BOOL EndRequest(DWORD dwFlags = 0,
LPINTERNET_BUFFERS lpBuffIn = NULL, DWORD dwContext = 1);
BOOL QueryInfo(DWORD dwInfoLevel, LPVOID lpvBuffer,
LPDWORD lpdwBufferLength, LPDWORD lpdwIndex = NULL) const;
BOOL QueryInfo(DWORD dwInfoLevel, CString& str,
LPDWORD dwIndex = NULL) const;
BOOL QueryInfo(DWORD dwInfoLevel, SYSTEMTIME* pSysTime,
LPDWORD dwIndex = NULL) const;
BOOL QueryInfo(DWORD dwInfoLevel, DWORD& dwResult,
LPDWORD dwIndex = NULL) const;
BOOL QueryInfoStatusCode(DWORD& dwStatusCode) const;
DWORD ErrorDlg(CWnd* pParent = NULL,
DWORD dwError = ERROR_INTERNET_INCORRECT_PASSWORD,
DWORD dwFlags = FLAGS_ERROR_UI_FLAGS_GENERATE_DATA | FLAGS_ERROR_UI_FLAGS_CHANGE_OPTIONS,
LPVOID* lppvData = NULL);
// Attributes
public:
CString GetVerb() const;
CString GetObject() const;
virtual CString GetFileURL() const;
virtual void Close();
// Implementation
public:
virtual ~CHttpFile();
protected:
CString m_strObject;
CString m_strVerb;
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif
friend class CHttpConnection;
friend class CInternetSession;
DECLARE_DYNAMIC(CHttpFile)
};
// class CGopherFile is declared after CGopherLocator, below
////////////////////////////////////////////////////////////////////////////
// Connection types
class CInternetConnection : public CObject
{
public:
CInternetConnection(CInternetSession* pSession, LPCTSTR pstrServer,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
DWORD dwContext = 1);
// Operations
operator HINTERNET() const;
DWORD GetContext() const;
CInternetSession* GetSession() const;
CString GetServerName() const;
BOOL QueryOption(DWORD dwOption, LPVOID lpBuffer, LPDWORD lpdwBufLen) const;
BOOL QueryOption(DWORD dwOption, DWORD& dwValue) const;
BOOL QueryOption(DWORD dwOption, CString& refString) const;
BOOL SetOption(DWORD dwOption, LPVOID lpBuffer, DWORD dwBufferLength,
DWORD dwFlags = 0);
BOOL SetOption(DWORD dwOption, DWORD dwValue, DWORD dwFlags = 0);
// Implementation
protected:
HINTERNET m_hConnection;
DWORD m_dwContext;
CInternetSession* m_pSession;
virtual void Close();
CString m_strServerName;
INTERNET_PORT m_nPort;
public:
~CInternetConnection();
DECLARE_DYNAMIC(CInternetConnection)
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
void AssertValid() const;
#endif
};
class CFtpConnection : public CInternetConnection
{
public:
CFtpConnection(CInternetSession* pSession, HINTERNET hConnected,
LPCTSTR pstrServer, DWORD dwContext);
CFtpConnection(CInternetSession* pSession, LPCTSTR pstrServer,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
DWORD dwContext = 0,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
BOOL bPassive = FALSE);
BOOL SetCurrentDirectory(LPCTSTR pstrDirName);
BOOL GetCurrentDirectory(CString& strDirName) const;
BOOL GetCurrentDirectory(LPTSTR pstrDirName, LPDWORD lpdwLen) const;
BOOL GetCurrentDirectoryAsURL(LPTSTR pstrName, LPDWORD lpdwLen) const;
BOOL GetCurrentDirectoryAsURL(CString& strDirName) const;
BOOL RemoveDirectory(LPCTSTR pstrDirName);
BOOL CreateDirectory(LPCTSTR pstrDirName);
BOOL Rename(LPCTSTR pstrExisting, LPCTSTR pstrNew);
BOOL Remove(LPCTSTR pstrFileName);
BOOL PutFile(LPCTSTR pstrLocalFile, LPCTSTR pstrRemoteFile,
DWORD dwFlags = FTP_TRANSFER_TYPE_BINARY, DWORD dwContext = 1);
BOOL GetFile(LPCTSTR pstrRemoteFile, LPCTSTR pstrLocalFile,
BOOL bFailIfExists = TRUE,
DWORD dwAttributes = FILE_ATTRIBUTE_NORMAL,
DWORD dwFlags = FTP_TRANSFER_TYPE_BINARY, DWORD dwContext = 1);
CInternetFile* OpenFile(LPCTSTR pstrFileName,
DWORD dwAccess = GENERIC_READ,
DWORD dwFlags = FTP_TRANSFER_TYPE_BINARY, DWORD dwContext = 1);
virtual void Close();
// implementation
~CFtpConnection();
protected:
CString m_strServerName;
public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endif
DECLARE_DYNAMIC(CFtpConnection)
};
class CHttpConnection : public CInternetConnection
{
public:
enum {
_HTTP_VERB_MIN = 0,
HTTP_VERB_POST = 0,
HTTP_VERB_GET = 1,
HTTP_VERB_HEAD = 2,
HTTP_VERB_PUT = 3,
HTTP_VERB_LINK = 4,
HTTP_VERB_DELETE = 5,
HTTP_VERB_UNLINK = 6,
_HTTP_VERB_MAX = 6,
};
public:
CHttpConnection(CInternetSession* pSession, HINTERNET hConnected,
LPCTSTR pstrServer, DWORD dwContext);
CHttpConnection(CInternetSession* pSession, LPCTSTR pstrServer,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
DWORD dwContext = 1);
CHttpConnection(CInternetSession* pSession, LPCTSTR pstrServer,
DWORD dwFlags, INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
DWORD dwContext = 1);
CHttpFile* OpenRequest(LPCTSTR pstrVerb, LPCTSTR pstrObjectName,
LPCTSTR pstrReferer = NULL,DWORD dwContext = 1,
LPCTSTR* ppstrAcceptTypes = NULL, LPCTSTR pstrVersion = NULL,
DWORD dwFlags = INTERNET_FLAG_EXISTING_CONNECT);
CHttpFile* OpenRequest(int nVerb, LPCTSTR pstrObjectName,
LPCTSTR pstrReferer = NULL, DWORD dwContext = 1,
LPCTSTR* ppstrAcceptTypes = NULL, LPCTSTR pstrVersion = NULL,
DWORD dwFlags = INTERNET_FLAG_EXISTING_CONNECT);
// implementation
~CHttpConnection();
virtual void Close();
protected:
CString m_strServerName;
static const LPCTSTR szHtmlVerbs[];
public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endif
friend class CInternetSession; // just to access szHtmlVerbs
DECLARE_DYNAMIC(CHttpConnection)
};
class CGopherConnection : public CInternetConnection
{
public:
CGopherConnection(CInternetSession* pSession,
HINTERNET hConnected, LPCTSTR pstrServer, DWORD dwContext);
CGopherConnection(CInternetSession* pSession, LPCTSTR pstrServer,
LPCTSTR pstrUserName = NULL, LPCTSTR pstrPassword = NULL,
DWORD dwContext = 0,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER);
CGopherFile* OpenFile(CGopherLocator& refLocator, DWORD dwFlags = 0,
LPCTSTR pstrView = NULL, DWORD dwContext = 1);
CGopherLocator CreateLocator(LPCTSTR pstrDisplayString,
LPCTSTR pstrSelectorString, DWORD dwGopherType);
BOOL CGopherConnection::GetAttribute(CGopherLocator& refLocator,
CString strRequestedAttributes, CString& strResult);
static CGopherLocator CreateLocator(LPCTSTR pstrLocator);
static CGopherLocator CreateLocator(LPCTSTR pstrServerName,
LPCTSTR pstrDisplayString,
LPCTSTR pstrSelectorString, DWORD dwGopherType,
INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER);
// implementation
~CGopherConnection();
virtual void Close();
public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endif
DECLARE_DYNAMIC(CGopherConnection)
};
/////////////////////////////////////////////////////////////////////////////
// CFtpFileFind
class CFtpFileFind : public CFileFind
{
public:
CFtpFileFind(CFtpConnection* pConnection, DWORD dwContext = 1);
virtual ~CFtpFileFind();
virtual BOOL FindFile(LPCTSTR pstrName = NULL,
DWORD dwFlags = INTERNET_FLAG_RELOAD);
virtual BOOL FindNextFile();
CString GetFileURL() const;
// implementation
protected:
virtual void CloseContext();
CFtpConnection* m_pConnection;
DWORD m_dwContext;
public:
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endif
DECLARE_DYNAMIC(CFtpFileFind)
};
/////////////////////////////////////////////////////////////////////////////
// CGopherLocator
class CGopherLocator : public CObject
{
public:
~CGopherLocator();
operator LPCTSTR() const;
CGopherLocator(const CGopherLocator& ref);
BOOL GetLocatorType(DWORD& dwRef) const;
private:
// this only created by CGopherConnection::CreateLocator or by serialization
CGopherLocator(LPCTSTR pstrLocator, DWORD dwLocLen);
CString m_Locator; // _not_ a zero-terminated string!
DWORD m_dwBufferLength;
friend class CGopherConnection;
friend class CGopherFile;
};
/////////////////////////////////////////////////////////////////////////////
// CGopherFile
class CGopherFile : public CInternetFile
{
// Constructors
protected:
CGopherFile(HINTERNET hFile, CGopherLocator& refLocator,
CGopherConnection* pConnection);
CGopherFile(HINTERNET hFile, HINTERNET hSession,
LPCTSTR pstrLocator, DWORD dwLocLen, DWORD dwContext);
// Operations
public:
virtual void Close();
virtual void Write(const void* lpBuf, UINT nCount);
void WriteString(LPCTSTR pstr);
// Implementation
protected:
CGopherLocator m_Locator;
public:
virtual ~CGopherFile();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif
friend class CInternetSession;
friend class CGopherConnection;
DECLARE_DYNAMIC(CGopherFile)
};
/////////////////////////////////////////////////////////////////////////////
// CGopherFileFind
class CGopherFileFind : public CFileFind
{
public:
CGopherFileFind(CGopherConnection* pConnection, DWORD dwContext = 1);
virtual ~CGopherFileFind();
virtual BOOL FindFile(CGopherLocator& refLocator, LPCTSTR pstrString,
DWORD dwFlags = INTERNET_FLAG_RELOAD);
virtual BOOL FindFile(LPCTSTR pstrString,
DWORD dwFlags = INTERNET_FLAG_RELOAD);
virtual BOOL FindNextFile();
virtual BOOL IsDots() const;
virtual BOOL GetLastWriteTime(FILETIME* pTimeStamp) const;
virtual BOOL GetLastAccessTime(FILETIME* pTimeStamp) const;
virtual BOOL GetCreationTime(FILETIME* pTimeStamp) const;
virtual BOOL GetLastWriteTime(CTime& refTime) const;
virtual BOOL GetLastAccessTime(CTime& refTime) const;
virtual BOOL GetCreationTime(CTime& refTime) const;
CGopherLocator GetLocator() const;
CString GetScreenName() const;
virtual DWORD GetLength() const;
#if defined(_X86_) || defined(_ALPHA_)
virtual __int64 GetLength64() const;
#endif
protected:
virtual void CloseContext();
CGopherConnection* m_pConnection;
DWORD m_dwContext;
// implementation
public:
// Unsupported APIs
CString GetFileName() const;
CString GetFilePath() const;
CString GetFileTitle() const;
CString GetFileURL() const;
CString GetRoot() const;
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endif
DECLARE_DYNAMIC(CGopherFileFind)
};
///////////////////////////////////////////////////////////////////////
// CInternetException
class CInternetException : public CException
{
public:
// Constructor
CInternetException(DWORD dwError);
// Attributes
DWORD m_dwError;
DWORD m_dwContext;
// Implementation
public:
~CInternetException();
#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
#endif
virtual BOOL GetErrorMessage(LPTSTR lpstrError, UINT nMaxError,
PUINT pnHelpContext = NULL);
DECLARE_DYNAMIC(CInternetException)
};
/////////////////////////////////////////////////////////////////////////////
// Inline function declarations
#ifdef _AFX_ENABLE_INLINES
#define _AFXINET_INLINE AFX_INLINE
#include <afxinet.inl>
#endif
#undef AFX_DATA
#define AFX_DATA
#ifdef _AFX_MINREBUILD
#pragma component(minrebuild, on)
#endif
#ifndef _AFX_FULLTYPEINFO
#pragma component(mintypeinfo, off)
#endif
#endif // __AFXINET_H__