New release: Drag and Drop, absolute positioning and clickable container
We have just released Flet 0.1.41 with drag-and-drop support and other neat features such as absolute positioning of controls inside stack and clickable container!
Drag and Drop
Making drag-and-drop in Flet is a real joy - thanks to a smart drag-and-drop implementation in Flutter! You just have "draggable" control which could be dragged to a "drag target" which calls on_accept
event handler when draggable is dropped.

Take a look at Drag-and-Drop example.
Explore Draggable
and DragTarget
controls, their properties and events.