If your application supports a multiple-document interface (MDI), you should provide a Documents collection object. Use the name Documents for this collection, unless the name is inappropriate for the application.
The Documents collection object should have all of the following properties.
| Property name | Return type | Description |
|---|---|---|
| Application | VT_DISPATCH | Returns the Application object; read only. Required. |
| Count | VT_I4 | Returns the number of items in the collection; read only. Required. |
| _NewEnum | VT_DISPATCH | A special property that returns an enumerator object that implements IEnumVARIANT. Required. |
| Parent | VT_DISPATCH | Returns the parent of the Documents collection object; read only. Required. |
The Documents collection object should have all of the following methods.
| Method name | Return type | Description |
|---|---|---|
| Add | VT_DISPATCH | Creates a new document and adds it to the collection. Returns the document that was created. Required. |
| Close | VT_EMPTY | Closes all documents in the collection. Required. |
| Item | VT_DISPATCH or VT_EMPTY | Returns a Document object from the collection or returns VT_EMPTY if the document does not exist. Takes an optional argument, index, which may be a string (VT_BSTR) indicating the document name, a number (VT_I4) indicating the ordered position within the collection, or either (VT_VARIANT). If index is omitted, returns the Document collection. The Item method is the default member (DISPID_VALUE). Required. |
| Open | VT_DISPATCH or VT_EMPTY |
Opens an existing document and adds it to the collection. Returns the document that was opened, or VT_EMPTY if the object could not be opened. Takes one required argument, filename, and one optional argument, password. Both arguments have the type VT_BSTR. Required. |