Returns true if the data and action can be handled by the model; otherwise
returns false.
- Although the specified \a row, \a column and \a parent indicate the
- location of an item in the model where the operation ended, it is the
- responsibility of the view to provide a suitable location for where the
- data should be inserted.
+ The specified \a row, \a column and \a parent indicate the location of an
+ item in the model where the operation ended. It is the responsibility of
+ the model to complete the action at the correct location.
For instance, a drop action on an item in a QTreeView can result in new
items either being inserted as children of the item specified by \a row,
\a column, and \a parent, or as siblings of the item.
- When row and column are -1 it means that it is up to the model to decide
- where to place the data. This can occur in a tree when data is dropped on
- a parent. Models will usually append the data to the parent in this case.
+ When \a row and \a column are -1 it means that the dropped data should be
+ considered as dropped directly on \a parent. Usually this will mean
+ appending the data as child items of \a parent. If \a row and column are
+ greater than or equal zero, it means that the drop occurred just before the
+ specified \a row and \a column in the specified \a parent.
\sa supportedDropActions(), {Using drag and drop with item views}
*/