protected override void OnMouseMove(MouseEventArgs e)
{
var loc = e.GetPosition(this);
// See if dragging should start/continue
if (!m_dragging && m_mouse_down_at != null && Point.Subtract(loc, m_mouse_down_at.Value).Length > 5)
{
// Begin dragging the content associated with the tab
m_dragging = true;
if (DockControl != null)
{
DockContainer.DragBegin(DockControl, PointToScreen(loc));
}
return;
}
base.OnMouseMove(e);
}
