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void fm_dnd_set_dest_auto_scroll (GtkWidget *drag_dest_widget
,GtkAdjustment *hadj
,GtkAdjustment *vadj
);
This function installs a "drag-motion" handler to the dest widget to support auto-scroll when the dragged item is near the margin of the destination widget. For example, when a user drags an item over the bottom of a GtkTreeView, the desired behavior should be to scroll up the content of the tree view and to expose the items below currently visible region. So the user can drop on them.
void
fm_dnd_unset_dest_auto_scroll (GtkWidget *drag_dest_widget
);
Unsets what has been done by fm_dnd_set_dest_auto_scroll()