When the user clicks the right mouse button over an object, depending on that object, a default pop-up menu is displayed. Using this option you can create a pop-up menu using the TPopupMenu object and attach it to this object. Then, when the user right clicks over the object, your pop-up menu will be displayed rather than the default version.
The property uses an object drop down box. This means that when you click the drop down arrow the names of any TPopupMenu objects will be displayed in the list and you will be able to choose one.
You cannot update this property during runtime.