get focus when dragging and dropping file

[cbucher]

When dragging and dropping a file to insert the filename in console input, console should get the focus.

[cbucher]

It can be done only with OLE-based drag-and-drop.
With WM_DROPFILES, the application which have the focus before drag-and-drop retakes the focus after ...
Drag-and-drop in elevated console can only be done with WM_DROPFILES !
So I keep the current behavior.
I just fixed the behavior with splitted views: the view where files are dropped becomes the active view.