gtk:icon-view-enable-model-drag-source (view mask targets actions)

view -- a gtk:icon-view widget
mask -- a gdk:modifier-type flags of allowed buttons to start drag
targets -- a list of target entries that the drag will support
actions -- a gdk:drag-action bitmask of possible actions for a drag from this widget

Turns the icon view into a drag source for automatic DND. Calling this method sets the reorderable property to the false value.