Здравствуйте, simply_ask, Вы писали:

_>Я дико извиняюсь, но может быть кто-нибудь поделится значением Attributes, при котором shellfolder будет открываться по левому клику в explorer tree view ? Спасибо

см. описание IShellFolder::GetAttributesOf и содержимое файла shlobj.h

То что тебя интересует определяется наличием флага SFGAO_HASSUBFOLDER

// IShellFolder::GetAttributesOf flags
// DESCRIPTION:
//      SFGAO_CANLINK: If this bit is set on an item in the shell folder, a
//            "Create Shortcut" menu item will be added to the File
//            menu and context menus for the item.  If the user selects
//            that command, your IContextMenu::InvokeCommand() will be called
//            with 'link'.
//                 That flag will also be used to determine if "Create Shortcut"
//            should be added when the item in your folder is dragged to another
//            folder.
#define SFGAO_CANCOPY           DROPEFFECT_COPY // Objects can be copied    (0x1)
#define SFGAO_CANMOVE           DROPEFFECT_MOVE // Objects can be moved     (0x2)
#define SFGAO_CANLINK           DROPEFFECT_LINK // Objects can be linked    (0x4)
#define SFGAO_CANRENAME         0x00000010L     // Objects can be renamed
#define SFGAO_CANDELETE         0x00000020L     // Objects can be deleted
#define SFGAO_HASPROPSHEET      0x00000040L     // Objects have property sheets
#define SFGAO_DROPTARGET        0x00000100L     // Objects are drop target
#define SFGAO_CAPABILITYMASK    0x00000177L
#define SFGAO_LINK              0x00010000L     // Shortcut (link)
#define SFGAO_SHARE             0x00020000L     // shared
#define SFGAO_READONLY          0x00040000L     // read-only
#define SFGAO_GHOSTED           0x00080000L     // ghosted icon
#define SFGAO_HIDDEN            0x00080000L     // hidden object
#define SFGAO_DISPLAYATTRMASK   0x000F0000L
#define SFGAO_FILESYSANCESTOR   0x10000000L     // It contains file system folder
#define SFGAO_FOLDER            0x20000000L     // It's a folder.
#define SFGAO_FILESYSTEM        0x40000000L     // is a file system thing (file/folder/root)
#define SFGAO_HASSUBFOLDER      0x80000000L     // Expandable in the map pane
#define SFGAO_CONTENTSMASK      0x80000000L
#define SFGAO_VALIDATE          0x01000000L     // invalidate cached information
#define SFGAO_REMOVABLE         0x02000000L     // is this removeable media?
#define SFGAO_COMPRESSED        0x04000000L     // Object is compressed (use alt color)
#define SFGAO_BROWSABLE         0x08000000L     // is in-place browsable
#define SFGAO_NONENUMERATED     0x00100000L     // is a non-enumerated object
#define SFGAO_NEWCONTENT        0x00200000L     // should show bold in explorer tree
#define SFGAO_CANMONIKER        0x00400000L     // can create monikers for its objects