public void TwoStringVoid(string s1, string s2)
        {
            ListBoxPrint p = new ListBoxPrint(LbxOutput);

            p.Print("~~~~");
            p.Print(s1.RJ(10));
            p.Print(s2.RJ(10));
        }
        private void BtnClick_Click(object sender, EventArgs e)
        {
            ListBoxPrint p             = new ListBoxPrint(LbxOutput);
            DelSSs       testStringDel = new DelSSs(ConCatFunc);
            DelSSs       anotherStrDel = new DelSSs(TwoString);
            DelSSv       voidStrDel    = new DelSSv(TwoStringVoid);

            p.Print(testStringDel("abc", "def"));
            p.Print(testStringDel("ABC", "DEF"));
            p.Print(StringDelPassed(5, testStringDel));
            p.Print(StringDelPassed(5, anotherStrDel));
            voidStrDel("123", "ABC");
        }