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POGetting Vista Folder Paths
 

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  1. POGetting Vista Folder Paths
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    <p>Why will this not compile in Delphi 2009?</p> <pre><code>unit VistaFolders; interface uses Windows, ShellAPI, ShlObj; type KNOWNFOLDERID = TGuid; const FOLDERID_ProgramData: KNOWNFOLDERID = '{374DE290-123F-4565-9164-39C4925E467B}'; // downloads folder var SHGetKnownFolderPathFunc: function( const rfid: KNOWNFOLDERID; dwFlags: DWORD; hToken: THandle; var ppszPath: PWideChar ): HResult; stdcall; SHGetKnownFolderIDListFunc: function( const rfid: KNOWNFOLDERID; dwFlags: DWORD; hToken: THandle; var ppidl: PItemIDList ): HResult; stdcall; function GetDownloadsFolderPath: string; implementation uses ActiveX; function PathFromIDList( Pidl: ShlObj.PItemIdList ): string; var Path: array[ 0..MAX_PATH ] of Char; begin if SHGetPathFromIDList( Pidl, Path ) then Result := Path else Result := ''; end; function GetDownloadsFolderPath: string; var Path: PWideChar; Pidl: PItemIdList; begin Result := ''; if @SHGetKnownFolderPathFunc &lt;&gt; nil then begin if Succeeded( SHGetKnownFolderPathFunc( FOLDERID_ProgramData, 0, 0, Path ) ) then begin try Result := Path; finally; CoTaskMemFree( Path ); end; Exit; end; end else if @SHGetKnownFolderIDListFunc &lt;&gt; nil then begin if Succeeded( SHGetKnownFolderIDListFunc( FOLDERID_ProgramData, 0, 0, Pidl ) ) then begin try Result := PathFromIDList( Pidl ); finally; CoTaskMemFree( Pidl ); end; Exit; end; end; if Succeeded( SHGetFolderLocation( 0, CSIDL_PROFILE, 0, 0, Pidl ) ) then try Result := PathFromIDList( Pidl ) + '\Downloads'; finally; CoTaskMemFree( Pidl ); end; end; procedure InitVistaFunctions; var hShell32: THandle; begin hShell32 := GetModuleHandle( 'SHELL32' ); @SHGetKnownFolderPathFunc := Windows.GetProcAddress( Shell32, 'SHGetKnownFolderPath' ); @SHGetKnownFolderIDListFunc := Windows.GetProcAddress( Shell32, 'SHGetKnownFolderIDList' ); end; initialization InitVistaFunctions; end. </code></pre>
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    1. COThank-you... it works perfectly now.
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      1. USBill Miller
    2. COThe compiler usually TELLS you why something won't compile. Don't make everyone else guess. Include the compiler's error message and location when you ask what the problem is.
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      1. USRob Kennedy
    3. CO@Bill Miller: if mghie's answer was helpful, it would be courteous for you to "Accept" it by ticking the check-mark next to his answer.
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      1. USArgalatyr
 

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