Function returns the tree items which define a position
where a drop operation has been performed.
A result for the new item is defined as follows:
hNode1
hNode2
invalid
invalid
Dropping out of tree items.
invalid
valid
Dropping above hNode2.
valid
invalid
Dropping under hNode1.
valid
invalid
If hNode1 = hNode2, the new item is dropped directly onto the existing item.
If hNode1 ≠ hNode2, the new item is dropped between the items hNode1 and hNode2,
whereby hNode1 and hNode2 are placed always on the same level of the tree.
Return value
BOOL – if it is @TRUE, the function got the position for Drag&Drop,
otherwise the values of "out" parameters are undefined.
Example
These files contain an example of using Drag
and Drop in the graphic object of Tree view type.
After importing these files into the system, the picture DnD_example
is added. It enables the drag and drop operations of text and files over the
graphic object of Tree view type. S.DnD_example.xml SD.FileList.xml
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