Emitted on the drop site when the user drops the data onto the widget.
The signal handler must determine whether the pointer position is in
a drop zone or not. If it is not in a drop zone, it returns %FALSE
and no further processing is necessary.
Otherwise, the handler returns %TRUE. In this case, this handler will
accept the drop. The handler is responsible for rading the given @value
and performing the drop operation.
Emitted on the drop site when the user drops the data onto the widget.
The signal handler must determine whether the pointer position is in a drop zone or not. If it is not in a drop zone, it returns %FALSE and no further processing is necessary.
Otherwise, the handler returns %TRUE. In this case, this handler will accept the drop. The handler is responsible for rading the given @value and performing the drop operation.