Easy example of How to create menus in the editor
Customizing the editor’s toolbar buttons menu via custom plugin

UE4 - Easy example of How to create menus in the editor
http://www.danielmayor.com/ue4-simple-menus

UE4 Level Editor
https://books.google.com.sg/books?id=zZ7cDgAAQBAJ&pg=PA272&lpg=PA272&dq=UE4+leveleditor+C%2B%2B&source=bl&ots=ZsX7ZCR6bV&sig=6_J7xzxTDosX5dOuLwpiaKrOSHU&hl=zh-CN&sa=X&ved=2ahUKEwji8aiT8orfAhWFTn0KHU0JB7wQ6AEwBXoECAUQAQ#v=onepage&q=UE4%20leveleditor%20C%2B%2B&f=false

Creating an Editor Module
https://wiki.unrealengine.com/Creating_an_Editor_Module

Customizing the editor’s toolbar buttons menu via custom plugin
https://answers.unrealengine.com/questions/25609/customizing-the-editors-toolbar-buttons-menu-via-c.html

UE4 Editor Toolbar Extention
https://blog.csdn.net/hui211314ddhui/article/details/79375548


因为太爱一个人,所以不敢做真实的自己,反而越容易分手。