Using a combobox as an example, it has the List property.
Does anyone know how to implement that same property interface but for a custom control?

Thanks in advance.

You just provide a Public Property Let and a Public Property Get for the property in your control. Have you looked at the add-in "ActiveX Control Interface Wizard"? It can do this for you.

Creating the property isnt a problem.
Im after the functionality of the dropdown list within the properties window of IDE.

I have tried to use the wizard, matching properties to an existing combobox but dont get the same result.

It looks like you can not create a property for a user control that works in the same way as the Combo Boxes List property, however you could emulate it by creating a Property Page for your control. I know it is not a solution to your problem, however it is a workaround.

Regards
Owain Williams