Widget.dragSourceSet
void dragSourceSet(gdk.types.ModifierType startButtonMask, gtk.target_entry.TargetEntry[] targets, gdk.types.DragAction actions)Sets up a widget so that GTK+ will start a drag operation when the user clicks and drags on the widget. The widget must have a window.
Parameters
startButtonMask | the bitmask of buttons that can start the drag |
targets | the table of targets that the drag will support, may be null |
actions | the bitmask of possible actions for a drag from this widget |