InternetSetOptionA function (wininet.h)
Sets an Internet option.
Syntax
BOOL InternetSetOptionA(
[in] HINTERNET hInternet,
[in] DWORD dwOption,
[in] LPVOID lpBuffer,
[in] DWORD dwBufferLength
);
Parameters
[in] hInternet
Handle on which to set information.
[in] dwOption
Internet option to be set. This can be one of the Option Flags values.
[in] lpBuffer
Pointer to a buffer that contains the option setting.
[in] dwBufferLength
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
The wininet.h header defines InternetSetOption as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wininet.h |
| Library | Wininet.lib |
| DLL | Wininet.dll |