[PATCH] winex11: The correct way to search the target window for drag&drop operations.

[Zebediah Figura]

Hello John, thanks for the patch! Note that all patches require a 
Signed-off-by header, as a way of taking responsibility for the patch 
and acknowledging that you believe it's acceptable for Wine.

On 4/17/19 4:20 PM, John Found wrote:
 > +/* the recursive worker for window_from_point_dnd */
 > +HWND do_window_from_point_dnd(HWND hwnd, POINT* point)
 > +{
 > +    HWND w;
 > +    w = ChildWindowFromPointEx(hwnd, *point, CWP_SKIPDISABLED | 
CWP_SKIPINVISIBLE);
 > +    if (w && (w != hwnd))
 > +    {
 > +        MapWindowPoints(hwnd, w, point, 1);
 > +        w = do_window_from_point_dnd(w, point);
 > +    }
 > +    return w;
 > +}
 > +
 > +
 > +/* Recursively search for the window on given coordinates in a 
drag&drop specific manner. */
 > +HWND window_from_point_dnd(HWND hwnd, POINT point)
 > +{
 > +    POINT p;
 > +    p.x = point.x;
 > +    p.y = point.y;
 > +    ScreenToClient(hwnd, &p);
 > +    return do_window_from_point_dnd(hwnd, &p);
 > +}
 > +

Maybe I'm missing something here, but don't these two functions 
effectively do the equivalent of WindowFromPoint(point)? Is there any 
reason we can't just use that instead?