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POGetting Vista Folder Paths
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  1. POGetting Vista Folder Paths
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    copied!<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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