InternetSetOption function

Sets an Internet option.

Syntax


BOOL InternetSetOption(
  _In_ HINTERNET hInternet,
  _In_ DWORD     dwOption,
  _In_ LPVOID    lpBuffer,
  _In_ DWORD     dwBufferLength
);

Parameters

hInternet [in]: Handle on which to set information.
dwOption [in]: Internet option to be set. This can be one of the Option Flags values.
lpBuffer [in]: Pointer to a buffer that contains the option setting.
dwBufferLength [in]: Size of the lpBuffer buffer. If lpBuffer contains a string, the size is in TCHARs. If lpBuffer contains anything other than a string, the size is in bytes.

Return value

Returns TRUE if successful, or FALSE otherwise. To get a specific error message, call GetLastError.

Remarks

GetLastError will return the error ERROR_INVALID_PARAMETER if an option flag that cannot be set is specified.

For more information, see Setting and Retrieving Internet Options.

Like all other aspects of the WinINet API, this function cannot be safely called from within DllMain or the constructors and destructors of global objects.

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 [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Wininet.h
Library	Wininet.lib
DLL	Wininet.dll
Unicode and ANSI names	InternetSetOptionW (Unicode) and InternetSetOptionA (ANSI)