gdk:drag-context-drag-window (context)

context -- a gdk:drag-context object

The gdk:window drag window, or nil.

Returns the window on which the drag icon should be rendered during the drag operation. Note that the window may not be available until the drag operation has begun. GDK will move the window in accordance with the ongoing drag operation. The window is owned by context and will be destroyed when the drag operation is over.