The ancestor form #EOEXAM01 contains a method routine which displays a message box when the Open option is selected in the File menu:
Use Message_Box_Show (ok Ok Info #Com_Owner.Name 'Ancestor HandleFileOpen method invoked') (#Std_Obj)
In the inheriting form exactly the same message is displayed when the Open option of the File menu is selected:
Sometimes you may want to modify the ancestor's methods in the inheriting form. You do this by using a method routine with *REDEFINE option.
To see how this works add a method routine to the inheriting form #EOEXAM02 which overrides the HandleFileOpen method of the ancestor form by changing the message text to "Descendant HandleFileOpen method invoked":
MTHROUTINE NAME(HandleFileOpen) OPTIONS(*REDEFINE)
Use Message_Box_Show (ok Ok Info #Com_Self.Name 'Descendant HandleFileOpen method invoked') (#Std_Obj)
Compile the form and execute it. Select the Open option from the File menu. The redefined message text is displayed: