>Ed,
>Am I correct in thinking that WinInet.DLL has greater ubiquity than SHLWAPI.DLL?
>
>If this is true, then there are a bunch of URL manipulating functions. Specifically:
>
>BOOL InternetCanonicalizeUrl(
> LPCTSTR lpszUrl,
> LPTSTR lpszBuffer,
> LPDWORD lpdwBufferLength,
> DWORD dwFlags
>);
>

Yes, WININET.DLL is less shell version sensitive than SHLWAPI, but this function simply converts a URL intyo its canonical form, not what I think you're looking for. Rick Strahl's wwIPStuff has several wrappers for the Inet functgionality; I'd suggest using that.

>which if used with dwFlags = BitOR( ICU_DECODE , ICU_NO_ENCODE ) should give Andrus what he is looking for.
>
>The following code sample is off the top of my head, so no one should expect it to run as-is!:

Declare Integer InternetCanonicalizeUrl In WinInet.DLL ;
>   String @ cUrlToDecode ;
> , String @ cResultsBuffer ;
> , Integer @ iBufferLength ;
> , Integer iFlags
>
>Declare Integer GetLastError In Win32Api
>
>*- flags for InternetCanonicalizeUrl() and InternetCombineUrl() from WinInet.H
>
>#define ICU_NO_ENCODE   0x20000000  && Don't convert unsafe characters to escape sequence.
>#define ICU_DECODE      0x10000000  && Convert %XX escape sequences to characters.
>#define ICU_NO_META     0x08000000  && Don't convert .. etc. meta path sequences.
>#define ICU_ENCODE_SPACES_ONLY 0x04000000  && Encode spaces only.
>#define ICU_BROWSER_MODE 0x02000000 && Special encode/decode rules for browser.
>
>cUrlToDecode = "This%20is%20a%20test"
>
>iBufferLength = Len( cUrlToDecode )
>cResultsBuffer = Space( iBufferLength ) + Chr(0)
>cUrlToDecode = cUrlToDecode + Chr(0)
>iBufferLength = iBufferLength + 1
>
>iResult = InternetCanonicalizeUrl( ;
>            @cUrlToDecode ;
>          , @cResultsBuffer ;
>          , @iBufferLength ;
>          , BitOR( ICU_DECODE , ICU_NO_ENCODE ))
>
>TRUE = -1  && 0 for FALSE.
>If iResult == TRUE
>   Return Left( cResultsBuffer, iBufferLength )
>Endif
>Return "ERROR: " + Transform( GetLastError())