[wxPython] Drag-and-drop in wxGrid

I see no objects in the series EVT_GRID_CELL_LEFT_CLICK,
EVT_GRID_CELL_RIGHT_CLICK, ... (in grid.py) that seem to
associate themselves with drag-and-drop, and this source file is
generated automatically by SWIG.

Would I be correct in thinking that wxGrid does not support drag-
and-drop, and, furthermore, that it is not possible to implement
drag-and-drop for this control from within Python?

Thanks for your help.