... button 5, 40, 10, "", "", "Please enter your username and password.","",14, 40, 35, 290, 100, "", "", // Group box 5, 50 , 53 , "", ... Text6, 150 , 50 , "", "", "", "MyName", // Text edit box 5, 50 , 73, "", "", "Password", "", // Text6, 150 , 70, "", ... assigning a type.For example, the following declarations are all valid:xloper op_pi = {3.14 159 2 653 58979, xltypeNum};xloper op_nil = {0.0, xltypeNil};xloper op_false = {0.0, xltypeBool};xloper...