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Changes the file name extension on the Microsoft Win32 Internet (WinInet) cache file to the specified extension.
Syntax
HRESULT SetCacheExtension(
[in] LPCWSTR pwzExt,
[in, out] LPVOID pszCacheFile,
[in, out] DWORD *pcbCacheFile,
[in, out] DWORD *pdwWinInetError,
[in, out] DWORD *pdwReserved
);
Parameters
pwzExt [in]
The new file name extension. The extension must begin with a period.pszCacheFile [in, out]
A long pointer to a buffer that contains that new cache file name.pcbCacheFile [in, out]
A pointer to a DWORD that contains the size in bytes of the buffer for pszCacheFile.pdwWinInetError [in, out]
A pointer to a DWORD that contains more error information from WinInet. If no error has occurred, then this parameter is set to zero.pdwReserved [in, out]
A pointer to a DWORD that is reserved. Must be set to zero.
Return value
Returns one of the following values.
| Return code | Description |
|---|---|
| S_OK | Indicates success. |
| E_FAIL | Indicates that an unknown error has occurred. |
| E_INVALIDARG | Indicates that pwzExt, pszCacheFile, or pcbCacheFile is invalid. |
| E_OUTOFMEMORY | Indicates that an attempt to allocate memory failed. |
Remarks
The IWinInetCacheHints::SetCacheExtension method was introduced in Microsoft Internet Explorer 6 for Windows XP Service Pack 2 (SP2).
Requirements
Minimum supported client |
Windows XP with SP2 |
Minimum supported server |
Windows Server 2003 |
Product |
Internet Explorer 6.0 |
Header |
Urlmon.h |
IDL |
Urlmon.idl |
DLL |
Urlmon.dll |