protected override void OnMouseDown(MouseEventArgs e)
{
SuspendLayout();
if (Focused == false)
{
Focus();
}
LeftButton = (e.Button & MouseButtons.Left) == MouseButtons.Left;
RightButton = (e.Button & MouseButtons.Right) == MouseButtons.Right;
LastMouseDownLocation = e.Location;
_layoutManager.MouseDown(e);
ResumeLayout();
base.OnMouseDown(e);
}
