To see how reusable parts can inherit from a component such as a button, create a reusable part (in this example it is called it EOEXAM20) of type panel, and make the ancestor of this part a button (#PRIM_PHBN):
To see inheritance information, make sure that the Show Advanced Features option is selected in the Editor Settings.
Set PRIM_PHBN as the Ancestor.
Next resize the component to make it look like a button:
Set Button Properties
Display the Details tab to see all the properties of the reusable part. Notice that it has now all the properties of a button (because its Ancestor is a button). Change the Caption to "Button A" and select Buttons as the Group property.
The button reusable part now has a caption:
Create an Event Routine
Lastly create an event routine for the Click event of the button to show a message box when it is clicked. The message box will show the name of the reusable part:
EVTROUTINE HANDLING(#COM_OWNER.Click)
Use Message_Box_Show (ok Ok Info 'The Button Is:' #Com_Owner.Name) (#Std_Obj)
ENDROUTINE
Compile the reusable part.
Source for the Button Reusable Part
This is the source code for the button reusable part:
FUNCTION OPTIONS(*DIRECT)
BEGIN_COM ROLE(*EXTENDS #PRIM_PHBN) CAPTION('Button A') DISPLAYPOSITION(1) HEIGHT(28) LEFT(0) TABPOSITION(1) TOP(0) WIDTH(128)
EVTROUTINE HANDLING(#COM_OWNER.Click)
Use Message_Box_Show (ok Ok Info 'The Button Is:' #Com_Owner.Name) (#Std_Obj)
ENDROUTINE
END_COM
