Using inheritance has a number of advantages:
When you change the ancestor window, the changes are reflected in all descendants of the window. You do not have to make manual changes in the descendants, as you would in a copy. This saves you coding time and makes the application easier to maintain.
Each descendant inherits the ancestor's scripts, so you do not have to re-enter the code to add to the script.
You get consistency in the code and in the application windows.
When you use inheritance to build an object, everything in the ancestor object is inherited in all its descendants. In the descendant, you can:
Change the properties of the window
Add controls to the window and modify existing controls
Size and position the window and the controls in the window
Build new scripts for events in the window or its controls
Reference the ancestor's functions and events
Reference the ancestor’s structures if the ancestor contains a public or protected instance variable of the structure datatype
Access ancestor properties, such as instance variables, if the scope of the property is public or protected
Extend or override inherited scripts
Declare functions, structures, and variables for the window
Declare user events for the window and its controls
The only thing you cannot do is delete inherited controls. If you do not need an inherited control, you can make it invisible in the descendent window.
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