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InternetReadFileEx function

Reads data from a handle opened by the InternetOpenUrl or HttpOpenRequest function.

Syntax


BOOL InternetReadFileEx(
  _In_   HINTERNET hFile,
  _Out_  LPINTERNET_BUFFERS lpBuffersOut,
  _In_   DWORD dwFlags,
  _In_   DWORD_PTR dwContext
);

Parameters

hFile [in]

Handle returned by the InternetOpenUrl or HttpOpenRequest function.

lpBuffersOut [out]

Pointer to an INTERNET_BUFFERS structure that receives the data downloaded.

dwFlags [in]

This parameter can be one of the following values.

ValueMeaning
IRF_ASYNC

Identical to WININET_API_FLAG_ASYNC.

IRF_SYNC

Identical to WININET_API_FLAG_SYNC.

IRF_USE_CONTEXT

Identical to WININET_API_FLAG_USE_CONTEXT.

IRF_NO_WAIT

Do not wait for data. If there is data available, the function returns either the amount of data requested or the amount of data available (whichever is smaller).

 

dwContext [in]

A caller supplied context value used for asynchronous operations.

Return value

Returns TRUE if successful, or FALSE otherwise. To get extended error information, call GetLastError. An application can also use InternetGetLastResponseInfo when necessary.

Remarks

Note  WinINet does not support server implementations. In addition, it should not be used from a service. For server implementations or services use Microsoft Windows HTTP Services (WinHTTP).

Requirements

Minimum supported client

Windows 2000 Professional

Minimum supported server

Windows 2000 Server

Header

Wininet.h

Library

Wininet.lib

DLL

Wininet.dll

Unicode and ANSI names

InternetReadFileExW (Unicode) and InternetReadFileExA (ANSI)

See also

Common Functions
WinINet Functions

 

 

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