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Chapter 18. Drag and Drop | 
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Chapter 18. Drag and Drop |
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When a drop destination has accepted a dragged item, certain signals will be
emitted, depending on what action has been selected. For instance, the user
might have held down the Shift key to specify a
move rather than a copy. Remember that
the user can only select the actions which you have specified in your calls to
drag_dest_set() and
drag_source_set().
The source widget will emit these signals, in this order:
drag_begin: Provides DragContext.
drag_data_get: Provides info about the dragged data format, and a Gtk::SelectionData structure, in which you should put the requested data.
drag_end: Provides DragContext.
The destination widget will emit these signals, in this order:
drag_motion: Provides DragContext and coordinates.
You can call the drag_status() method of the DragContext
to indicate which action will be accepted.
drag_drop: Provides DragContext and coordinates.
You can call drag_get_data(), which triggers the
drag_data_get signal in the source widget, and then the
drag_data_received signal in the destination widget.
drag_data_received: Provides info
about the dragged data format, and a
Gtk::SelectionData structure which contains the
dropped data. You should call the drag_finish()
method of the DragContext to indicate whether the
operation was successful.
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| Methods |  |
DragContext |