How to bind to a UserWidget in c++ class?

Hi, i am created a custom button User Widget to which i attached an even dispatcher: OnClicked. I use this custom button in my other User Interface widgets/menus, but i am having tough time to figure out how can i get a reference to these Widget buttons in my c++ class?

My widget custom button blueprint (CustomButton):

Its a combination of Button and text. I use this in my MainMenu widget which is a c++ sub class of “UserWidget”. I wanna know how can i Bind this widget in my c++ class? Mainly i want to use “OnClicked” event for each button in my class.