🚀 go-pugleaf

EA. wrote:

> I'm trying to create a DropGridControl class which
> extends GridControl class with added drop capabilities..
> i.e. you can drag from a JTree and drop into my
> DropGridControl.
> 
> Problem: You can ONLY drop when the tip of the
> mouse cursor is positioned on top of the border
> of my DropGridControl!! If the mouse cursor is INSIDE
> my DropGridCotrol, I can see from the events debug
> messages that the mouse cursor has "Entered" and "Exited"
> the drop zone! i.e. it's saying that the mouse cursor has
> passed the drop target, which is not true.

I haven't played with this, but from having worked a lot
with the GridControl, the debug messages potentially make 
sense.

The Gridcontrol is extended, via GridView, from JScrollPane.
JScrollPane is a composite component in the sense that
it contains a JViewport.  The actual "grid", called GridCore,
is contained by the viewport.  So, what you seem to be getting
is a message that indeed, your drop target, the JScrollPane,
consists only of that thin border around the "grid", and that
the innards are not qualified as the drop target.

My guess is that you need to make the GridCore the drop target.
How you would do that is something others may be able to 
help you with (I haven't done anything with D&D in Java, yet).


Paul Furbacher  (TeamB)