When you build a user object that inherits its definition (properties, events, functions, structures, variables, controls, and scripts) from an existing user object, you save coding time. All you must do is modify the inherited definition to meet the requirements of the current application.
For example, suppose your application has a user object u_file_view that has three CommandButtons:
List—displays a list of files in a list
Open—opens the selected file and displays the file in a MultiLineEdit control
Close—displays a message box and then closes the window
If you want to build another user object that is exactly like the existing u_file_view except that it has a fourth CommandButton, you can use inheritance to build the new user object, and then all you need to do is add the fourth CommandButton.
To use inheritance to build a descendent user
object:
Click the Inherit button in the PowerBar, or select File>Inherit from the menu bar.
In the Inherit From Object dialog box, select User Objects from the Objects of Type drop-down list.
Select the target as well as the library or libraries you want to look in.
Select the user object you want to use to create the descendant, and click OK.
The selected object displays in the User Object painter and the title bar indicates that the object is a descendant.
Make any changes you want to the user object.
Save the user object with a new name.
