ui.DragDrop.getLocationParent
Get the index of the parent node where the object was dropped.
Syntax
getLocationParent()
RETURNS INTEGERUsage
When using a tree view, a node can be dropped as
a sibling or as a child node to another node. In order to distinguish between the
cases, you must use the getLocationParent() method, which returns the index of
the parent node of the drop target node returned by
getLocationRow().
If both methods return the same row index, you must append the dropped row as a child of the
target node. Otherwise, getLocationParent() identifies the parent node where
the dropped row has to be added as a child, and getLocationRow() is the index
of a sibling node. In the last case the dropped node must be inserted before the node identified
by getLocationRow().
These methods are typically used in the ON DROP block, but can also be used in
ON DRAG_OVER to deny the drop depending on the indexes returned; for example, the
program might only allow the drop of objects as new children for a given parent node.