As I do for a control that incapacitates the options of the menu, as the user has access or not, make this in time of execution, without the developer (programmer) it gets seedling this. For instance: if I place a function inside of the code of the control called OPEN_DATABASE that opens the bank and sees which options of the menu this user has access, which I don't want it is that the programmer places any code after calling this function that enables the menu again, example mnufrmcustomer.enabled = true, and this form was incapacitated before

I would like of knows where I can find some good helps and examples about creation of controls, classes etc