private void LockAllButtons_Click(object sender, EventArgs e)
        {
            if (sender is ToolStripMenuItem)
            {
                ToolStripMenuItem          tsi   = (ToolStripMenuItem)sender;
                ScanButtonContextMenuStrip pbcms = (ScanButtonContextMenuStrip)tsi.GetCurrentParent();
                IntPtr    pointer = pbcms.tableHandle;
                TableData td      = TableHandler.tableSessions[pointer];

                // Lock Seats in TableData
                td.lockAllSeats();

                // Update Buttons => Show lock!
                string tablename        = td.tablename;
                PlayerButtonHandler pbh = TableHandler.buttonInventory[tablename];
                pbh.lockAllButtons();
            }
        }