I figured it out and it *was* my mistake.
The QListView widget does not manage it's space
directly - it does it through a QWidget it owns
(actually QScrollView owns) which is held in the
variable viewport (part of a structure) and
accessed through self.viewport ().
To get the Drag/Drop events to operate, you need
to create a subclass of QDropSite (as mentioned
earlier), but its parent needs to be
self.viewport () (where self is the QListView).
In the subclassed QDropSite, you need to
override each of the Drag/Drop events, for
example:
class myDropSite (QDropSite):
def __init__(self, parent):
QDropSite.__init__(self, parent)
self.parent = parent
def dragMoveEvent (self, e):
return self.parent.parent().dragMoveEvent (e)
...
class myListView (QListView):
...
self.dropSite = myDropSite(self.viewport())
def dragMoveEvent (self, e):
...
since you can't directly add/override event
handlers in self.viewport. The viewport
part is documented on the QScrollView page
in the Qt docs.
Apparently viewport, not QListView gets the mouse
events through event(), too, so the QDragObject
(or QTextObject, etc) should probably be parented
on viewport, since it installs event filters
which are activted from event () (I'm dragging
from a QListView to another QListView). I haven't
tried this yet, but expect it will work.
Jim
