IWinInetCacheHints2::SetCacheExtension2 method

Article
2016-07-13

Changes the file name extension on the Microsoft Win32 Internet (WinInet) cache file to the specified extension.

Syntax

HRESULT SetCacheExtension2(
  [in]      LPCWSTR pwzExt,
  [out]     WCHAR   *pwzCacheFile,
  [in, out] DWORD   *pcchCacheFile,
  [out]     DWORD   *pdwWinInetError,
  [out]     DWORD   *pdwReserved
);

Parameters

pwzExt [in]
Specifies the new file name extension. The extension must begin with a period.
pwzCacheFile [out]
Pointer to a WCHAR buffer that receives the new cache file name.
pcchCacheFile [in, out]
Address of a variable of type DWORD that specifies the size in bytes of the buffer for pwzCacheFile.
pdwWinInetError [out]
Address of a variable of type DWORD that receives additional error information from WinInet, or NULL. If no error occurs, the value is set to zero.
pdwReserved [out]
Reserved. Set to NULL.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The SetCacheExtension2 method was introduced in Windows Internet Explorer 7. It uses InternetQueryOptionW to return a WCHAR version of the cache file name.

Requirements

Minimum supported client	Windows XP with SP2
Minimum supported server	Windows Server 2003
Product	Internet Explorer 7
Header	Urlmon.h
IDL	Urlmon.idl
DLL	Urlmon.dll

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