Scrolling ComboBox (ctxCombo from DBITech) with mouse wheel

I maintain on old aplication that uses ctxCombo from DBITech. It's a very good component but it's not capable to scroll down the items in the DropDown list using the mouse wheel only scrollbar and down/up arrows Keys.
Attachment 191502

I try to subclass modify code from here:
https://www.vbforums.com/showthread....=1#post3412440

...but not work. Can someone try to subclass this component?

Could this help at all https://visualstudiomagazine.com/art...ousewheel.aspx

Thank you. I try