A very simple version of the drag and drop was shown to me in this thread (so hopefully you can adapt it for your needs):
The key python part (from the demo above also) is
if mousePressedIn(draggedImage):
draggedImage.pos = mouse.get Pos()
A very simple version of the drag and drop was shown to me in this thread (so hopefully you can adapt it for your needs):
The key python part (from the demo above also) is
if mousePressedIn(draggedImage):
draggedImage.pos = mouse.get Pos()