public static frmToolBox GetInstance()
        {
            if (ftb == null || ftb.IsDisposed)
            {
                ftb = new frmToolBox();
                ftb.TopLevel = false;
                ftb.Parent = ActiveForm;
            }

            return ftb;
        }
        public static frmToolBox GetInstance()
        {
            if (ftb == null || ftb.IsDisposed)
            {
                ftb          = new frmToolBox();
                ftb.TopLevel = false;
                ftb.Parent   = ActiveForm;
            }

            return(ftb);
        }