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IEnumIDList
The IEnumIDList interface enumerates item identifiers associated with shell folder objects.
First, use IShellFolder::EnumObjects to create an item enumeration object and then use IEnumIDList to iterate through the item IDs in the enumeration object.
IEnumIDList has the same methods as all enumerator interfaces: Next, Skip, Reset, and Clone. Next iterates through the item IDs one or more at a time, Skip passes over the next item ID in the list, Reset returns to the beginning of the item ID list, and Clone returns a duplicate item enumeration object.
When to Implement
You can implement this interface when you want a caller to be able to
enumerate the item IDs contained in a folder object. You get a pointer to IEnumIDList through IShellFolder::EnumObjects.
When to Use
You don't use this interface directly. IShellFolder::EnumObjects creates an enumeration object of this kind. In this case, the enumeration is
a set of item identifiers. The shell calls then IEnumIDList methods to enumerate the items contained in a enumeration object.
Methods in Vtable Order
IUnknown Methods
| Description
| QueryInterface
| Returns pointers to supported interfaces.
| AddRef
| Increments reference count.
| Release
| Decrements reference count.
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IEnumIDList Methods
| Description
| Next
| Retrieves the specified number of item identifiers.
| Skip
| Skip over the specified number of items.
| Reset
| Return to the beginning of the enumeration.
| Clone
| Creates a new item enumeration object identical to the current one.
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