SHGetSpecialFolderLocation
uses shlobj;
function GetDesktopFolder():string;
var
pItem: PItemIDList;
temp: array[0..MAX_PATH] of Char;
begin
SHGetSpecialFolderLocation(0, CSIDL_DESKTOP, pItem); //CSIDL_DESKTOP：桌面；
FillChar(temp, MAX_PATH, #0);
SHGetPathFromIDList(pItem, PChar(@temp));
Result :=PChar(@temp);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Caption:=getDesktopFOlder;
end;