using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Media; namespace Tango.DragAndDrop { public class DragThumb : Grid { public DragThumb() { IsHitTestVisible = true; } protected override void OnMouseDown(MouseButtonEventArgs e) { base.OnMouseDown(e); e.Handled = true; } protected override void OnPreviewMouseDown(MouseButtonEventArgs e) { base.OnPreviewMouseDown(e); e.Handled = true; } } }