SHGetKnownFolderPath

[Grincheux]

Where can I find an include file for this function : SHGetKnownFolderPath ? It should be placed into shell32.

Idem for the KNOWNFOLDERID constants.

Thanks

[Slugsnack]

i did a quick search for it and it's currently not defined. so you might have to declare it yourself

[Grincheux]

I made a call to LoadLibrary and GetProcAddress.
When The function returns it initializes EAX with 80070002h which seems to say "File not found" rather than INVALID_ARG !
I call the function like this

push OFFSET szResult
push -1
push 0
push OFFSET szGuId
call lpSHGetKnownFolderPath

I know that all the folders are not present onto my PC (I am running w7), but "My Documents" exists! So I don't understand; Can someone help me?

The GUID and corresponding CLSID can be found at http://phrio.biz/wiki/index.php?title=CLSID_%26_GUID

[dedndave]

you may have the parameters out of order
also, i think  FOLDERID_Documents is an equate - not a pointer to a string - i don't know what the value is

Code Select Expand


        INVOKE  SHGetKnownFolderPath,FOLDERID_Documents,<flags>,NULL,offset szPathString

insert the desired flags dword at <flags>
in INVOKE's, the last parm listed is the first parm pushed

Code Select Expand


        push    offset szPathString
        push    0
        push    <flags>
        push    FOLDERID_Documents
        call    SHGetKnownFolderPath

[joemc]

I don't have Windows Vista. i am on Windows XP.  i can show an example of SHGetFolderPath though :) or probably guess the code but cannot test it.

[MichaelW]

You could check the SHELL32.DLL exports with DumpPE, but according to this the function started with Vista, and I see no indication that it was exported by ordinal for the earlier versions.

[Grincheux]

The first parameter is not an equate. It is defined as a GUID (see the attached file).

[Ghandi]

http://msdn.microsoft.com/en-us/library/bb762188(VS.85).aspx

Code Select Expand


Retrieves the full path of a known folder identified by the folder's KNOWNFOLDERID.

Syntax
CopyHRESULT SHGetKnownFolderPath(
  __in   REFKNOWNFOLDERID rfid,
  __in   DWORD dwFlags,
  __in   HANDLE hToken,
  __out  PWSTR *ppszPath
);

Parameters
rfid [in]
REFKNOWNFOLDERID
A reference to the KNOWNFOLDERID that identifies the folder.

dwFlags [in]
DWORD
Flags that specify special retrieval options. This value can be 0; otherwise, one or more of the KNOWN_FOLDER_FLAG values.

hToken [in]
HANDLE
An access token that represents a particular user. If this parameter is NULL, which is the most common usage, the function requests the known folder for the current user.

Request a specific user's folder by passing the hToken of that user. This is typically done in the context of a service that has sufficient privileges to retrieve the token of a given user. That token must be opened with TOKEN_QUERY and TOKEN_IMPERSONATE rights. In addition to passing the user's hToken, the registry hive of that specific user must be mounted. See Access Control for further discussion of access control issues.

Assigning the hToken parameter a value of -1 indicates the Default User. This allows clients of SHGetKnownFolderPath to find folder locations (such as the Desktop folder) for the Default User. The Default User user profile is duplicated when any new user account is created, and includes special folders such as Documents and Desktop. Any items added to the Default User folder also appear in any new user account. Note that access to the Default User folders requires administrator privileges.

ppszPath [out]
PWSTR
When this method returns, contains the address of a pointer to a null-terminated Unicode string that specifies the path of the known folder. The calling process is responsible for freeing this resource once it is no longer needed by calling CoTaskMemFree.

Return Value
HRESULT

Returns S_OK if successful, or an error value otherwise, including the following:

Return code Description
E_FAIL Among other things, this value can indicate that the rfid parameter references a KNOWNFOLDERID which does not have a path (such as a folder marked as KF_CATEGORY_VIRTUAL).

E_INVALIDARG Among other things, this value can indicate that the rfid parameter references a KNOWNFOLDERID that is not present on the system. Not all KNOWNFOLDERID values are present on all systems. Use IKnownFolderManager::GetFolderIds to retrieve the set of KNOWNFOLDERID values for the current system.




Remarks
This function replaces SHGetFolderPath. That older function is now simply a wrapper for SHGetKnownFolderPath.

Requirements
Minimum supported client
Windows Vista
Minimum supported server
Windows Server 2008
Header
Shlobj.h
DLL
Shell32.dll (version 6.0.6000 or later)


Have you verified that the CLSID's you got from that webpage are the same ones defined in the MS headers?

Code Select Expand


http://www.abluestar.com/blog/get-special-folders-with-shgetknownfolderpath/

#include <shlobj.h>
void GetSpecialFolder( REFKNOWNFOLDERID rfid ) {
LPWSTR wszPath = NULL;
HRESULT hr = SHGetKnownFolderPath ( rfid, KF_FLAG_CREATE, NULL, &wszPath );
if ( SUCCEEDED(hr) )
{
wprintf( _T("Path: %s\n"), wszPath );
}
}

int _tmain(int argc, _TCHAR* argv[])
{
GetSpecialFolder( FOLDERID_ProgramData ); // Shared program data directory for all users
GetSpecialFolder( FOLDERID_RoamingAppData ); // Per-user program data directory (roaming)
GetSpecialFolder( FOLDERID_LocalAppData ); // Per-user program data directory (non-roaming)

GetSpecialFolder( FOLDERID_ProgramFiles ); // App install directory
GetSpecialFolder( FOLDERID_Documents ); // Logs, reports, output
return 0;
}




Here is the MSDN page with the constant names, you would need to get the header file which defines the constants and convert it to MASM
http://msdn.microsoft.com/en-us/library/dd378457(v=VS.85).aspx

The function was introduced in Vista (according to MSDN) and either Vista or Server 2008 are the minimum OS requirement, as the supercedes SHGetFolderPath.

HR,
Ghandi

[donkey]

You can use the KnownFolders.h file from my header project and translate it to whichever assembler you use...

[Grincheux]

My Result :

;   =========================================================================
                  .Data
                  ALIGN   4
;   =========================================================================

KNOWNFOLDERID   STRUCT
   DWord_1         DWord   ?
   Word_1         Word   ?
   Word_2         Word   ?
   Byte_1         Byte   ?
   Byte_2         Byte   ?
   Byte_3         Byte   ?
   Byte_4         Byte   ?
   Byte_5         Byte   ?
   Byte_6         Byte   ?
   Byte_7         Byte   ?
   Byte_8         Byte   ?
KNOWNFOLDERID ends

szSHGetKnownFolderPath   Byte   "SHGetKnownFolderPath",0
szShell32            Byte   "Shell32.dll",0

;FOLDERID_ComputerFolder   KNOWNFOLDERID   <0AC0837Ch,0BBF8h,452Ah,85h,0Dh,79h,0D0h,8Eh,66h,7Ch,0A7h>

FOLDERID_NetworkFolder                  KNOWNFOLDERID   <0D20BEEC4h,05CA8h,04905h,0AEh,03Bh,0BFh,025h,01Eh,0A0h,09Bh,053h>
FOLDERID_ComputerFolder                  KNOWNFOLDERID   <00AC0837Ch,0BBF8h,0452Ah,085h,00Dh,079h,0D0h,08Eh,066h,07Ch,0A7h>
FOLDERID_InternetFolder                  KNOWNFOLDERID   <04D9F7874h,04E0Ch,04904h,096h,07Bh,040h,0B0h,0D2h,00Ch,03Eh,04Bh>
FOLDERID_ControlPanelFolder               KNOWNFOLDERID   <082A74AEBh,0AEB4h,0465Ch,0A0h,014h,0D0h,097h,0EEh,034h,06Dh,063h>
FOLDERID_PrintersFolder                  KNOWNFOLDERID   <076FC4E2Dh,0D6ADh,04519h,0A6h,063h,037h,0BDh,056h,006h,081h,085h>
FOLDERID_SyncManagerFolder               KNOWNFOLDERID   <043668BF8h,0C14Eh,049B2h,097h,0C9h,074h,077h,084h,0D7h,084h,0B7h>
FOLDERID_SyncSetupFolder               KNOWNFOLDERID   <0f214138h,0b1d3h,04a90h,0bbh,0a9h,027h,0cbh,0c0h,0c5h,038h,09ah>   ;{0F214138-B1D3-4a90-BBA9-27CBC0C5389A}
FOLDERID_ConflictFolder                  KNOWNFOLDERID   <04bfefb45h,0347dh,04006h,0a5h,0beh,0ach,00ch,0b0h,056h,071h,092h>
FOLDERID_SyncResultsFolder               KNOWNFOLDERID   <0289a9a43h,0be44h,04057h,0a4h,01bh,058h,07ah,076h,0d7h,0e7h,0f9h>
FOLDERID_RecycleBinFolder               KNOWNFOLDERID   <0B7534046h,03ECBh,04C18h,0BEh,04Eh,064h,0CDh,04Ch,0B7h,0D6h,0ACh>
FOLDERID_ConnectionsFolder               KNOWNFOLDERID   <06F0CD92Bh,02E97h,045D1h,088h,0FFh,0B0h,0D1h,086h,0B8h,0DEh,0DDh>
FOLDERID_Fonts                        KNOWNFOLDERID   <0FD228CB7h,0AE11h,04AE3h,086h,04Ch,016h,0F3h,091h,00Ah,0B8h,0FEh>
FOLDERID_Desktop                     KNOWNFOLDERID   <0B4BFCC3Ah,0DB2Ch,0424Ch,0B0h,029h,07Fh,0E9h,09Ah,087h,0C6h,041h>
FOLDERID_Startup                     KNOWNFOLDERID   <0B97D20BBh,0F46Ah,04C97h,0BAh,010h,05Eh,036h,008h,043h,008h,054h>
FOLDERID_Programs                     KNOWNFOLDERID   <0A77F5D77h,02E2Bh,044C3h,0A6h,0A2h,0ABh,0A6h,001h,005h,04Ah,051h>
FOLDERID_StartMenu                     KNOWNFOLDERID   <0625B53C3h,0AB48h,04EC1h,0BAh,01Fh,0A1h,0EFh,041h,046h,0FCh,019h>
FOLDERID_Recent                        KNOWNFOLDERID   <0AE50C081h,0EBD2h,0438Ah,086h,055h,08Ah,009h,02Eh,034h,098h,07Ah>
FOLDERID_SendTo                        KNOWNFOLDERID   <08983036Ch,027C0h,0404Bh,08Fh,008h,010h,02Dh,010h,0DCh,0FDh,074h>
FOLDERID_Documents                     KNOWNFOLDERID   <0FDD39AD0h,0238Fh,046AFh,0ADh,0B4h,06Ch,085h,048h,003h,069h,0C7h>
FOLDERID_Favorites                     KNOWNFOLDERID   <01777F761h,068ADh,04D8Ah,087h,0BDh,030h,0B7h,059h,0FAh,033h,0DDh>
FOLDERID_NetHood                     KNOWNFOLDERID   <0C5ABBF53h,0E17Fh,04121h,089h,000h,086h,062h,06Fh,0C2h,0C9h,073h>
FOLDERID_PrintHood                     KNOWNFOLDERID   <09274BD8Dh,0CFD1h,041C3h,0B3h,05Eh,0B1h,03Fh,055h,0A7h,058h,0F4h>
FOLDERID_Templates                     KNOWNFOLDERID   <0A63293E8h,0664Eh,048DBh,0A0h,079h,0DFh,075h,09Eh,005h,009h,0F7h>
FOLDERID_CommonStartup                  KNOWNFOLDERID   <082A5EA35h,0D9CDh,047C5h,096h,029h,0E1h,05Dh,02Fh,071h,04Eh,06Eh>
FOLDERID_CommonPrograms                  KNOWNFOLDERID   <00139D44Eh,06AFEh,049F2h,086h,090h,03Dh,0AFh,0CAh,0E6h,0FFh,0B8h>
FOLDERID_CommonStartMenu               KNOWNFOLDERID   <0A4115719h,0D62Eh,0491Dh,0AAh,07Ch,0E7h,04Bh,08Bh,0E3h,0B0h,067h>
FOLDERID_PublicDesktop                  KNOWNFOLDERID   <0C4AA340Dh,0F20Fh,04863h,0AFh,0EFh,0F8h,07Eh,0F2h,0E6h,0BAh,025h>
FOLDERID_ProgramData                  KNOWNFOLDERID   <062AB5D82h,0FDC1h,04DC3h,0A9h,0DDh,007h,00Dh,01Dh,049h,05Dh,097h>
FOLDERID_CommonTemplates               KNOWNFOLDERID   <0B94237E7h,057ACh,04347h,091h,051h,0B0h,08Ch,06Ch,032h,0D1h,0F7h>
FOLDERID_PublicDocuments               KNOWNFOLDERID   <0ED4824AFh,0DCE4h,045A8h,081h,0E2h,0FCh,079h,065h,008h,036h,034h>
FOLDERID_RoamingAppData                  KNOWNFOLDERID   <03EB685DBh,065F9h,04CF6h,0A0h,03Ah,0E3h,0EFh,065h,072h,09Fh,03Dh>
FOLDERID_LocalAppData                  KNOWNFOLDERID   <0F1B32785h,06FBAh,04FCFh,09Dh,055h,07Bh,08Eh,07Fh,015h,070h,091h>
FOLDERID_LocalAppDataLow               KNOWNFOLDERID   <0A520A1A4h,01780h,04FF6h,0BDh,018h,016h,073h,043h,0C5h,0AFh,016h>
FOLDERID_InternetCache                  KNOWNFOLDERID   <0352481E8h,033BEh,04251h,0BAh,085h,060h,007h,0CAh,0EDh,0CFh,09Dh>
FOLDERID_Cookies                     KNOWNFOLDERID   <02B0F765Dh,0C0E9h,04171h,090h,08Eh,008h,0A6h,011h,0B8h,04Fh,0F6h>
FOLDERID_History                     KNOWNFOLDERID   <0D9DC8A3Bh,0B784h,0432Eh,0A7h,081h,05Ah,011h,030h,0A7h,059h,063h>
FOLDERID_System                        KNOWNFOLDERID   <01AC14E77h,002E7h,04E5Dh,0B7h,044h,02Eh,0B1h,0AEh,051h,098h,0B7h>
FOLDERID_SystemX86                     KNOWNFOLDERID   <0D65231B0h,0B2F1h,04857h,0A4h,0CEh,0A8h,0E7h,0C6h,0EAh,07Dh,027h>
FOLDERID_Windows                     KNOWNFOLDERID   <0F38BF404h,01D43h,042F2h,093h,005h,067h,0DEh,00Bh,028h,0FCh,023h>
FOLDERID_Profile                     KNOWNFOLDERID   <05E6C858Fh,00E22h,04760h,09Ah,0FEh,0EAh,033h,017h,0B6h,071h,073h>
FOLDERID_Pictures                     KNOWNFOLDERID   <033E28130h,04E1Eh,04676h,083h,05Ah,098h,039h,05Ch,03Bh,0C3h,0BBh>
FOLDERID_ProgramFilesX86               KNOWNFOLDERID   <07C5A40EFh,0A0FBh,04BFCh,087h,04Ah,0C0h,0F2h,0E0h,0B9h,0FAh,08Eh>
FOLDERID_ProgramFilesCommonX86            KNOWNFOLDERID   <0DE974D24h,0D9C6h,04D3Eh,0BFh,091h,0F4h,045h,051h,020h,0B9h,017h>
FOLDERID_ProgramFilesX64               KNOWNFOLDERID   <06d809377h,06af0h,0444bh,089h,057h,0a3h,077h,03fh,002h,020h,00eh>
FOLDERID_ProgramFilesCommonX64            KNOWNFOLDERID   <06365d5a7h,0f0dh,045e5h,087h,0f6h,0dh,0a5h,06bh,06ah,04fh,07dh>
FOLDERID_ProgramFiles                  KNOWNFOLDERID   <0905e63b6h,0c1bfh,0494eh,0b2h,09ch,065h,0b7h,032h,0d3h,0d2h,01ah>
FOLDERID_ProgramFilesCommon               KNOWNFOLDERID   <0F7F1ED05h,09F6Dh,047A2h,0AAh,0AEh,029h,0D3h,017h,0C6h,0F0h,066h>
FOLDERID_AdminTools                     KNOWNFOLDERID   <0724EF170h,0A42Dh,04FEFh,09Fh,026h,0B6h,00Eh,084h,06Fh,0BAh,04Fh>
FOLDERID_CommonAdminTools               KNOWNFOLDERID   <0D0384E7Dh,0BAC3h,04797h,08Fh,014h,0CBh,0A2h,029h,0B3h,092h,0B5h>
FOLDERID_Music                        KNOWNFOLDERID   <04BD8D571h,06D19h,048D3h,0BEh,097h,042h,022h,020h,008h,00Eh,043h>
FOLDERID_Videos                        KNOWNFOLDERID   <018989B1Dh,099B5h,0455Bh,084h,01Ch,0ABh,07Ch,074h,0E4h,0DDh,0FCh>
FOLDERID_PublicPictures                  KNOWNFOLDERID   <0B6EBFB86h,06907h,0413Ch,09Ah,0F7h,04Fh,0C2h,0ABh,0F0h,07Ch,0C5h>
FOLDERID_PublicMusic                  KNOWNFOLDERID   <03214FAB5h,09757h,04298h,0BBh,061h,092h,0A9h,0DEh,0AAh,044h,0FFh>
FOLDERID_PublicVideos                  KNOWNFOLDERID   <02400183Ah,06185h,049FBh,0A2h,0D8h,04Ah,039h,02Ah,060h,02Bh,0A3h>
FOLDERID_ResourceDir                  KNOWNFOLDERID   <08AD10C31h,02ADBh,04296h,0A8h,0F7h,0E4h,070h,012h,032h,0C9h,072h>
FOLDERID_LocalizedResourcesDir            KNOWNFOLDERID   <02A00375Eh,0224Ch,049DEh,0B8h,0D1h,044h,00Dh,0F7h,0EFh,03Dh,0DCh>
FOLDERID_CommonOEMLinks                  KNOWNFOLDERID   <0C1BAE2D0h,010DFh,04334h,0BEh,0DDh,07Ah,0A2h,00Bh,022h,07Ah,09Dh>
FOLDERID_CDBurning                     KNOWNFOLDERID   <09E52AB10h,0F80Dh,049DFh,0ACh,0B8h,043h,030h,0F5h,068h,078h,055h>
FOLDERID_UserProfiles                  KNOWNFOLDERID   <00762D272h,0C50Ah,04BB0h,0A3h,082h,069h,07Dh,0CDh,072h,09Bh,080h>
FOLDERID_Playlists                     KNOWNFOLDERID   <0DE92C1C7h,0837Fh,04F69h,0A3h,0BBh,086h,0E6h,031h,020h,04Ah,023h>
FOLDERID_SamplePlaylists               KNOWNFOLDERID   <015CA69B3h,030EEh,049C1h,0ACh,0E1h,06Bh,05Eh,0C3h,072h,0AFh,0B5h>
FOLDERID_SampleMusic                  KNOWNFOLDERID   <0B250C668h,0F57Dh,04EE1h,0A6h,03Ch,029h,00Eh,0E7h,0D1h,0AAh,01Fh>
FOLDERID_SamplePictures                  KNOWNFOLDERID   <0C4900540h,02379h,04C75h,084h,04Bh,064h,0E6h,0FAh,0F8h,071h,06Bh>
FOLDERID_SampleVideos                  KNOWNFOLDERID   <0859EAD94h,02E85h,048ADh,0A7h,01Ah,009h,069h,0CBh,056h,0A6h,0CDh>
FOLDERID_PhotoAlbums                  KNOWNFOLDERID   <069D2CF90h,0FC33h,04FB7h,09Ah,00Ch,0EBh,0B0h,0F0h,0FCh,0B4h,03Ch>
FOLDERID_Public                        KNOWNFOLDERID   <0DFDF76A2h,0C82Ah,04D63h,090h,06Ah,056h,044h,0ACh,045h,073h,085h>
FOLDERID_ChangeRemovePrograms            KNOWNFOLDERID   <0df7266ach,09274h,04867h,08dh,055h,03bh,0d6h,061h,0deh,087h,02dh>
FOLDERID_AppUpdates                     KNOWNFOLDERID   <0a305ce99h,0f527h,0492bh,08bh,01ah,07eh,076h,0fah,098h,0d6h,0e4h>
FOLDERID_AddNewPrograms                  KNOWNFOLDERID   <0de61d971h,05ebch,04f02h,0a3h,0a9h,06ch,082h,089h,05eh,05ch,004h>
FOLDERID_Downloads                     KNOWNFOLDERID   <0374de290h,0123fh,04565h,091h,064h,039h,0c4h,092h,05eh,046h,07bh>
FOLDERID_PublicDownloads               KNOWNFOLDERID   <03d644c9bh,01fb8h,04f30h,09bh,045h,0f6h,070h,023h,05fh,079h,0c0h>
FOLDERID_SavedSearches                  KNOWNFOLDERID   <07d1d3a04h,0debbh,04115h,095h,0cfh,02fh,029h,0dah,029h,020h,0dah>
FOLDERID_QuickLaunch                  KNOWNFOLDERID   <052a4f021h,07b75h,048a9h,09fh,06bh,04bh,087h,0a2h,010h,0bch,08fh>
FOLDERID_Contacts                     KNOWNFOLDERID   <056784854h,0c6cbh,0462bh,081h,069h,088h,0e3h,050h,0ach,0b8h,082h>
FOLDERID_SidebarParts                  KNOWNFOLDERID   <0a75d362eh,050fch,04fb7h,0ach,02ch,0a8h,0beh,0aah,031h,044h,093h>
FOLDERID_SidebarDefaultParts            KNOWNFOLDERID   <07b396e54h,09ec5h,04300h,0beh,0ah,024h,082h,0ebh,0aeh,01ah,026h>
FOLDERID_TreeProperties                  KNOWNFOLDERID   <05b3749adh,0b49fh,049c1h,083h,0ebh,015h,037h,00fh,0bdh,048h,082h>
FOLDERID_PublicGameTasks               KNOWNFOLDERID   <0debf2536h,0e1a8h,04c59h,0b6h,0a2h,041h,045h,086h,047h,06ah,0eah>
FOLDERID_GameTasks                     KNOWNFOLDERID   <054fae61h,04dd8h,04787h,080h,0b6h,09h,02h,020h,0c4h,0b7h,00h>
FOLDERID_SavedGames                     KNOWNFOLDERID   <04c5c32ffh,0bb9dh,043b0h,0b5h,0b4h,02dh,072h,0e5h,04eh,0aah,0a4h>
FOLDERID_Games                        KNOWNFOLDERID   <0cac52c1ah,0b53dh,04edch,092h,0d7h,06bh,02eh,08ah,0c1h,094h,034h>
FOLDERID_RecordedTV                     KNOWNFOLDERID   <0bd85e001h,0112eh,0431eh,098h,03bh,07bh,015h,0ach,009h,0ffh,0f1h>
FOLDERID_SEARCH_MAPI                  KNOWNFOLDERID   <098ec0e18h,02098h,04d44h,086h,044h,066h,097h,093h,015h,0a2h,081h>
FOLDERID_SEARCH_CSC                     KNOWNFOLDERID   <0ee32e446h,031cah,04abah,081h,04fh,0a5h,0ebh,0d2h,0fdh,06dh,05eh>
FOLDERID_Links                        KNOWNFOLDERID   <0bfb9d5e0h,0c6a9h,0404ch,0b2h,0b2h,0aeh,06dh,0b6h,0afh,049h,068h>
FOLDERID_UsersFiles                     KNOWNFOLDERID   <0f3ce0f7ch,04901h,04acch,086h,048h,0d5h,0d4h,04bh,004h,0efh,08fh>
FOLDERID_SearchHome                     KNOWNFOLDERID   <0190337d1h,0b8cah,04121h,0a6h,039h,06dh,047h,02dh,016h,097h,02ah>
FOLDERID_OriginalImages                  KNOWNFOLDERID   <02C36C0AAh,05812h,04b87h,0bfh,0d0h,04ch,0d0h,0dfh,0b1h,09bh,039h>

;   =========================================================================
                  .Code
                  ALIGN   16
;   =========================================================================

;HRESULT SHGetKnownFolderPath(
;  __in   REFKNOWNFOLDERID rfid,
;  __in   DWORD dwFlags,
;  __in   HANDLE hToken,
;  __out  PWSTR *ppszPath
;);

SHGetKnownFolderPath   PROC   __rfid:DWord,__dwFlags:DWord,__hToken:HANDLE,__lpszPath:LPBYTE
                  LOCAL   _dwResult:DWord
                  LOCAL   _szTmp[1024]:Byte
                  LOCAL   _lpszResult:LPWSTR

                  INVOKE   LoadLibrary,ADDR szShell32
                  push   eax
                  INVOKE   GetProcAddress,eax,ADDR szSHGetKnownFolderPath

                  lea      edx,_szTmp
                  mov      DWord Ptr [edx],SIZEOF _szTmp

                  push   edx
                  push   __hToken
                  push   __dwFlags
                  push   __rfid
                  call   eax

                  push   edi
                  push   esi

                  mov      esi,DWord Ptr _szTmp
                  mov      edi,__lpszPath
                  xor      eax,eax

                  test   esi,esi
                  jz      @EndLoop

@Loop :

                  mov      al,Byte Ptr [esi]

                  test   al,al
                  jz      @EndLoop

                  mov      Byte Ptr [edi],al

                  add      esi,2
                  add      edi,1
                  jmp      @Loop

@EndLoop :

                  mov      Byte Ptr [edi],0

                  pop      esi
                  pop      edi

                  call   FreeLibrary

                  mov      eax,__lpszPath
                  ret
SHGetKnownFolderPath   ENDP

;   =========================================================================

It can be downloaded at : http://www.phrio.biz/Assembleur/SHGetKnownFolderPath.asm