It inherits from 3. NavigationWidget_Base，Therefore, it has all the overridable functions of UISystemWidgetBase.

This is a common button customized by the system. For its implementation, please refer to WBP_CustomButton_CPP, WBP_CustomSettingSelector and WBP_CustomSettingSlider. It has the parameter ButtonInfo (a structure inside the system).

But it depends on a Button and ButtonTextBlock in the interface.

It does not add any new functions, but implements some initialization and click/hover sound effects based on ButtonInfo. You can compare WBP_CustomButton_CPP and WBP_CustomButton_BP.