The function
drop-object-pane-x
returns the x coordinate within the pane that the object is being dropped over. This information is only meaningful when the pane is an instance of output-pane or one of its subclasses.
Note:
drop-object-pane-x
should only be called within a
drop-callback
. It is not supported on X11/Motif. See simple-pane for information about drop callbacks.