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Pattern — Extend a Bundled Program

The fastest extension path when you only need visual or minor behavior changes: duplicate a bundled program, customize its widget, and swap it in your Programs Collection.

flowchart TB
  Parent["BP_Prog_Notepad<br/><i>duplicate from plugin</i>"]
  Child["BP_Prog_MyNotepad<br/><i>Blueprint child</i>"]
  Widget["WBP_MyNotepad<br/><i>duplicate WBP_Notepad</i>"]
  Parent --> Child
  Child -->|"Override Widget Class"| Widget
  Child --> Collection["Replace in Programs Collection"]

Works with any bundled BP_Prog_*

Program	Widget to duplicate	Path
`BP_Prog_Notepad`	`WBP_Notepad`	`Shared/Blueprints/Programs/Notepad/`
`BP_Prog_Calculator`	`WBP_Calculator`	`Shared/Blueprints/Programs/Calculator/`
`BP_Prog_WebBrowser`	`WBP_WebBrowser`	`Shared/Blueprints/Programs/WebBrowser/`
`BP_Prog_Store`	`WBP_Store`	`Shared/Blueprints/Programs/Store/`

Screenshot callouts

Steps

Duplicate BP_Prog_Notepad and WBP_Notepad into your project.
Customize the widget Designer layout.
Create a Blueprint child or edit the duplicate’s Widget Class.
Replace the entry in your OS Must Have Programs collection.
Boot and verify the reskinned app launches from desktop and Start menu.