The attributes of each file object and folder determine, among other things, what actions can be carried out on the item. For instance, in the code that filled the tree view control, you needed to get object attributes to determine whether the item had subfolders or was a folder itself. To determine the attributes of a file object or a folder, an application uses the IShellFolder::GetAttributesOf member function. Table 14-1 lists some of the possible attributes of an object. (These attributes are defined in SHLOBJ.H.)
| Attribute Flag | Description |
| SFGAO_CANCOPY | The object can be copied. |
| SFGAO_CANMOVE | The object can be moved. |
| SFGAO_CANLINK | The object can be linked. |
| SFGAO_CANRENAME | The object can be renamed. |
| SFGAO_CANDELETE | The object can be deleted. |
| SFGAO_HASPROPSHEET | The object has a property sheet. |
| SFGAO_DROPTARGET | The object is a drop target. |
| SFGAO_LINK | The object is a shortcut. |
| SFGAO_SHARE | The object is shared. |
| SFGAO_READONLY | The object is read-only. |
| SFGAO_GHOSTED | The object is displayed with a ghosted icon. |
| SFGAO_FILESYSANCESTOR | The object contains a file system folder. |
| SFGAO_FOLDER | The object is a folder. |
Table 14-1. Examples of object attributes. (continued)
| Attribute Flag | Description |
| SFGAO_FILESYSTEM | The object is a file system object (file/folder/root). |
| SFGAO_HASSUBFOLDER | The object has a subfolder. |
| SFGAO_REMOVABLE | Determines whether the object is removable media. |