/// <summary>
/// ドラッグ中処理
/// </summary>
/// <param name="owner"></param>
public void QueryContinueDrag(FrameworkElement owner)
{
if (Ghost != null) {
var p = CursorInfo.GetNowPosition(owner);
var loc = owner.PointFromScreen(owner.PointToScreen(new Point(0, 0)));
Point renderedLocation = owner.TranslatePoint(new Point(0, 0), Window.GetWindow(owner));
Ghost.LeftOffset = p.X - loc.X - renderedLocation.X;
Ghost.TopOffset = p.Y - loc.Y - renderedLocation.Y;
}
}
