Hi,
TDropBoxItem descends from TCloudItem so you can cast the folder object.
This is demonstrated in the CloudStorageDemo (included with the product download).
Example:
var
dif: TDropBoxItem;
ci: TCloudItem;
begin
dif := nil;
if Assigned(TreeView1.Selected) then
begin
ci := TCloudItem(TreeView1.Selected.Data);
if ci.ItemType = ciFolder then
begin
dif := ci as TDropBoxItem;
end;
end;